Author: "Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM)" / Publication Year Range: Last 50 years - Searchworks@Jio Institute Digital Library Search Results

Your search keyword '"Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM)"' showing total 103 results

Start Over Author "Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM)" Publication Year Range Last 50 years

103 results on '"Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM)"'

1. Phenotypic characterization of seven individuals with <scp>Marbach–Schaaf</scp> neurodevelopmental syndrome

Author: Felix Marbach, Beata S. Lipska‐Ziętkiewicz, Agata Knurowska, Vincent Michaud, Henri Margot, James Lespinasse, Frédéric Tran Mau Them, Christine Coubes, Joohyun Park, Sarah Grosch, Cristiana Roggia, Ute Grasshoff, Louisa Kalsner, Anne‐Sophie Denommé‐Pichon, Alexandra Afenjar, Bénédicte Héron, Boris Keren, Pilar Caro, Christian P. Schaaf, Heidelberg University, University of Gdańsk (UG), Medical University of Gdańsk, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], Centre Hospitalier Métropole Savoie [Chambéry], Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Unité fonctionnelle d' Innovation en Diagnostic Génomique des Maladies Rares (CHU Dijon) (UF6254), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), University of Tübingen, School of Medicine [University of Connecticut], University of Connecticut (UCONN), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Baylor College of Medicine (BCM), Baylor University, and Admin, Oskar
Subjects: Adult, Pain insensitivity, Autism Spectrum Disorder, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, Global developmental delay, [SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, [SDV.BDD.EO] Life Sciences [q-bio]/Development Biology/Embryology and Organogenesis, Syndrome, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Cohort Studies, [SDV.BDD.EO]Life Sciences [q-bio]/Development Biology/Embryology and Organogenesis, Phenotype, Neurodevelopmental disorder, PRKAR1B, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Neurodevelopmental Disorders, Genetics, Protein kinase a complex, Animals, Humans, Genetics (clinical)
Abstract: International audience; We present the phenotypes of seven previously unreported patients with Marbach-Schaaf neurodevelopmental syndrome, all carrying the same recurrent heterozygous missense variant c.1003C>T (p.Arg335Trp) in PRKAR1B. Clinical features of this cohort include global developmental delay and reduced sensitivity to pain, as well as behavioral anomalies. Only one of the seven patients reported here was formally diagnosed with autism spectrum disorder (ASD), while ASD-like features were described in others, overall indicating a lower prevalence of ASD in Marbach-Schaaf neurodevelopmental syndrome than previously assumed. The clinical spectrum of the current cohort is similar to that reported in the initial publication, delineating a complex developmental disorder with behavioral and neurologic features. PRKAR1B encodes the regulatory subunit R1beta of the protein kinase A complex (PKA), and is expressed in the adult and embryonal central nervous system in humans. PKA is crucial to a plethora of cellular signaling pathways, and its composition of different regulatory and catalytic subunits is cell-type specific. We discuss potential molecular disease mechanisms underlying the patients' phenotypes with respect to the different known functions of PKA in neurons, and the phenotypes of existing R1beta-deficient animal models.
Published: 2022
Full Text: View/download PDF

2. Antenatal ultrasound features of isolated recurrent copy number variation in 7q11.23 (Williams syndrome and 7q11.23 duplication syndrome)

Author: Cécile Courdier, John Boudjarane, Valérie Malan, Christine Muti, Brian Sperelakis‐Beedham, Sylvie Odent, Sylvie Jaillard, Chloé Quelin, Cédric Le Caignec, Olivier Patat, Charlotte Dubucs, Sophie Julia, Caroline Schluth‐Bolard, Carole Goumy, Sylvia Redon, Jean‐Baptiste Gaillard, Minh Tuan Huynh, Céline Dupont, Anne‐Claude Tabet, Guillaume Cogan, François Vialard, Rodolphe Dard, Guillaume Jedraszak, Florence Jobic, Mathilde Lefebvre, Geneviève Quenum, Saori Inai, Mélanie Rama, Fanny Sauvestre, Frédéric Coatleven, Julie Thomas, Caroline Rooryck, Hôpital Pellegrin, CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Hôpital de la Timone [CHU - APHM] (TIMONE), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier de Versailles André Mignot (CHV), Service de génétique clinique [Rennes], Université de Rennes (UR)-CHU Pontchaillou [Rennes]-hôpital Sud, Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Service de Cytogénétique et de Biologie Cellulaire, Université de Rennes (UR)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Service Génétique Médicale [CHU Toulouse], Institut Fédératif de Biologie (IFB), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Centre Hospitalier Universitaire de Toulouse (CHU Toulouse)-Pôle Biologie [CHU Toulouse], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Unité différenciation épidermique et auto-immunité rhumatoïde (UDEAR), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire de Cytogénétique Constitutionnelle [Hospices civils de Lyon], Hospices Civils de Lyon (HCL), Laboratoire de Diagnostic Génétique [CHU Strasbourg], Université de Strasbourg (UNISTRA)-CHU Strasbourg, Service de Cytogénétique Médicale [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Génétique, génomique fonctionnelle et biotechnologies (UMR 1078) (GGB), EFS-Université de Brest (UBO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO), Unité de Génétique Chromosomique [Montpellier], Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée [Montpellier], Hôpital Arnaud de Villeneuve [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Centre hospitalier universitaire de Nantes (CHU Nantes), AP-HP Hôpital universitaire Robert-Debré [Paris], CHI Poissy-Saint-Germain, Biologie de la Reproduction, Environnement, Epigénétique & Développement (BREED), École nationale vétérinaire - Alfort (ENVA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Université Paris-Saclay-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), CHU Amiens-Picardie, HEMATIM - Hématopoïèse et immunologie - UR UPJV 4666 (HEMATIM), Université de Picardie Jules Verne (UPJV)-CHU Amiens-Picardie-Institut National de la Santé et de la Recherche Médicale (INSERM), Unité de génétique médicale et oncogénétique [CHU Amiens Picardie], CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre Hospitalier Libourne, Service de Génétique Médicale [Lille], Institut de génétique médicale-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de pathologie [Bordeaux], Université Bordeaux Segalen - Bordeaux 2-CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Centre Hospitalier Universitaire de Bordeaux (CHU de Bordeaux), Hôpital Haut-Lévêque [CHU Bordeaux], CHU Bordeaux [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), and None
Subjects: [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Obstetrics and Gynecology, Genetics (clinical), [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; Objective: We aimed to gather fetal cases carrying a 7q11.23 copy number variation (CNV) and collect precise clinical data to broaden knowledge of antenatal features in these syndromes.Methods: We retrospectively recruited unrelated cases with 7q11.23 deletion, known as Williams-Beuren syndrome (WBS), or 7q11.23 duplication who had prenatal ultrasound findings. We collected laboratory and clinical data, fetal ultrasound, cardiac ultrasound and fetal autopsy reports from 18 prenatal diagnostic centers throughout France.Results: 40 fetuses with WBS were collected and the most common features were intra-uterine growth retardation (IUGR) (70.0%, 28/40), cardiovascular defects (30.0%, 12/40), polyhydramnios (17.5%, 7/40) and protruding tongue (15.0%, 6/40). Fetal autopsy reports were available for 11 cases and were compared with ultrasound prenatal features. Four cases of fetuses with 7q11.23 microduplication were collected and prenatal ultrasound signs were variable and often isolated.Conclusion: This work strengthens the fact that 7q11.23 CNVs are associated with a broad spectrum of antenatal presentations. IUGR and cardiovascular defects were the most frequent ultrasound signs. By reporting the biggest series of antenatal WBS, we aim to better delineate distinctive signs in fetuses with 7q11.23 CNVs.
Published: 2023
Full Text: View/download PDF

3. Rewiring Lipid Metabolism by Targeting PCSK9 and HMGCR to Treat Liver Cancer

Author: Malak Alannan, Véronique Trézéguet, Nivea Dias Amoêdo, Rodrigue Rossignol, Walid Mahfouf, Hamid Reza Rezvani, Franziska Dittrich-Domergue, Patrick Moreau, Sabrina Lacomme, Etienne Gontier, Christophe F. Grosset, Bassam Badran, Hussein Fayyad-Kazan, Aksam J. Merched, Merched, Aksam, BoRdeaux Institute in onCology (Inserm U1312 - BRIC), Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Cellomet [CHU Pellegrin, Bordeaux], CHU de Bordeaux Pellegrin [Bordeaux], Laboratoire de biogenèse membranaire (LBM), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Bordeaux Imaging Center (BIC), Université de Bordeaux (UB)-Institut François Magendie-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Lebanese University [Beirut] (LU), Association Cassandra contre les Leucémies et Cancers Pédiatriques (OPE-2018-0144), and Association les Récoltes de l’Espoir (RE-2021-1AD-F
Subjects: Cancer Research, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, [SDV]Life Sciences [q-bio], [SDV.MHEP.HEG]Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, [SDV.CAN]Life Sciences [q-bio]/Cancer, hepatocellular carcinoma, hepatoblastoma, lipotoxicity, [SDV.MHEP.HEG] Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, [SDV] Life Sciences [q-bio], Oncology, peridroplet mitochondria, [SDV.CAN] Life Sciences [q-bio]/Cancer, [SDV.BBM] Life Sciences [q-bio]/Biochemistry, Molecular Biology, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; Alterations in lipid handling are an important hallmark in cancer. Our aim here is to target key metabolic enzymes to reshape the oncogenic lipid metabolism triggering irreversible cell breakdown. We targeted the key metabolic player proprotein convertase subtilisin/kexin type 9 (PCSK9) using a pharmacological inhibitor (R-IMPP) alone or in combination with 3-hydroxy 3-methylglutaryl-Coenzyme A reductase (HMGCR) inhibitor, simvastatin. We assessed the effect of these treatments using 3 hepatoma cell lines, Huh6, Huh7 and HepG2 and a tumor xenograft in chicken choriorallantoic membrane (CAM) model. PCSK9 deficiency led to dose-dependent inhibition of cell proliferation in all cell lines and a decrease in cell migration. Co-treatment with simvastatin presented synergetic anti-proliferative effects. At the metabolic level, mitochondrial respiration assays as well as the assessment of glucose and glutamine consumption showed higher metabolic adaptability and surge in the absence of PCSK9. Enhanced lipid uptake and biogenesis led to excessive accumulation of intracellular lipid droplets as revealed by electron microscopy and metabolic tracing. Using xenograft experiments in CAM model, we further demonstrated the effect of anti-PCSK9 treatment in reducing tumor aggressiveness. Targeting PCSK9 alone or in combination with statins deserves to be considered as a new therapeutic option in liver cancer clinical applications.
Published: 2022
Full Text: View/download PDF

4. CRISPR-Cas9 globin editing can induce megabase-scale copy-neutral losses of heterozygosity in hematopoietic cells

Author: Jean-Marc Blouin, F. Prat, J. Rosier, Jean-Philippe Merlio, J. Bouron, Emmanuel Richard, Cécile Ged, Julian Boutin, Isabelle Lamrissi-Garcia, Aurélie Bedel, Sandrine Dabernat, François Moreau-Gaudry, G. Cullot, J. Toutain, Caroline Rooryck, Perrine Pennamen, Véronique Guyonnet-Dupérat, D. Cappellen, Samuel Amintas, Biothérapies des maladies génétiques et cancers, Université Bordeaux Segalen - Bordeaux 2-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Bordeaux Research In Translational Oncology [Bordeaux] (BaRITOn), Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Institut National de la Santé et de la Recherche Médicale (INSERM), Association Française contre les Myopathies, ANR-21-CE18-0002,CRISPR-genotox,Génotoxicité induite par CRISPR-CAS9(2021), Admin, Oskar, and Génotoxicité induite par CRISPR-CAS9 - - CRISPR-genotox2021 - ANR-21-CE18-0002 - AAPG2021 - VALID
Subjects: CRISPR-Cas9 genome editing, Genetic enhancement, Science, General Physics and Astronomy, Gene Expression, Loss of Heterozygosity, Biology, Polymorphism, Single Nucleotide, General Biochemistry, Genetics and Molecular Biology, Article, Loss of heterozygosity, 03 medical and health sciences, 0302 clinical medicine, Genome editing, Insulin-Like Growth Factor II, medicine, CRISPR, Humans, Globin, Cells, Cultured, 030304 developmental biology, Sequence Deletion, Genetics, Gene Editing, 0303 health sciences, Multidisciplinary, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, Chromosomes, Human, Pair 11, Chromosome, General Chemistry, DNA Methylation, medicine.disease, Hematopoietic Stem Cells, Uniparental disomy, 3. Good health, Telomere, Globins, Targeted gene repair, HEK293 Cells, 030220 oncology & carcinogenesis, RNA, Long Noncoding, CRISPR-Cas Systems, Chromosome Deletion, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: CRISPR-Cas9 is a promising technology for gene therapy. However, the ON-target genotoxicity of CRISPR-Cas9 nuclease due to DNA double-strand breaks has received little attention and is probably underestimated. Here we report that genome editing targeting globin genes induces megabase-scale losses of heterozygosity (LOH) from the globin CRISPR-Cas9 cut-site to the telomere (5.2 Mb). In established lines, CRISPR-Cas9 nuclease induces frequent terminal chromosome 11p truncations and rare copy-neutral LOH. In primary hematopoietic progenitor/stem cells, we detect 1.1% of clones (7/648) with acquired megabase LOH induced by CRISPR-Cas9. In-depth analysis by SNP-array reveals the presence of copy-neutral LOH. This leads to 11p15.5 partial uniparental disomy, comprising two Chr11p15.5 imprinting centers (H19/IGF2:IG-DMR/IC1 and KCNQ1OT1:TSS-DMR/IC2) and impacting H19 and IGF2 expression. While this genotoxicity is a safety concern for CRISPR clinical trials, it is also an opportunity to model copy-neutral-LOH for genetic diseases and cancers., CRISPR-Cas9 generates double-strand breaks, which pose a threat to genome integrity. Here the authors show loss of heterozygosity in edited hematopoietic progenitor cells.
Published: 2021
Full Text: View/download PDF

5. A MT-TL1 variant identified by whole exome sequencing in an individual with intellectual disability, epilepsy, and spastic tetraparesis

Author: de Boer, Elke, Ockeloen, Charlotte W., Matalonga, Leslie, Horvath, Rita, Cohen, Enzo, Cuesta, Isabel, Danis, Daniel, Denommé-Pichon, Anne-Sophie, Duffourd, Yannis, Gilissen, Christian, Johari, Mridul, Laurie, Steven, Li, Shuang, Nelson, Isabelle, Peters, Sophia, Paramonov, Ida, Prasanth, Sivakumar, Robinson, Peter, Sablauskas, Karolis, Savarese, Marco, Steyaert, Wouter, Töpf, Ana, van der Velde, Joeri K., Vitobello, Antonio, Rodenburg, Richard J., Coenen, Marieke J. H., Janssen, Mirian, Henssen, Dylan, Banka, Siddharth, Benetti, Elisa, Casari, Giorgio, Ciolfi, Andrea, Clayton-Smith, Jill, Dallapiccola, Bruno, Ellwanger, Kornelia, Faivre, Laurence, Graessner, Holm, Haack, Tobias B., Hammarsjö, Anna, Havlovicova, Marketa, Hoischen, Alexander, Hugon, Anne, Jackson, Adam, Kleefstra, Tjitske, Lindstrand, Anna, López-Martín, Estrella, Macek, Milan, Morleo, Manuela, Nigro, Vicenzo, Nordgren, Ann, Pettersson, Maria, Pinelli, Michele, Pizzi, Simone, Posada, Manuel, Radio, Francesca Clementina, Renieri, Alessandra, Rooryck, Caroline, Ryba, Lukas, Schwarz, Martin, Tartaglia, Marco, Thauvin, Christel, Torella, Annalaura, Verloes, Alain, Vissers, Lisenka, Votypka, Pavel, Vyshka, Klea, Zurek, Birte, Trimouille, Aurélien, Vissers, Lisenka E. L. M., Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Département de génétique [Robert Debré], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), European Research Council, Evelyn Trust, Newton Fund, European Project: 825619,AI4EU, Dutch Research Council (Holanda), Medical Research Council (Reino Unido), Lily Foundation, Unión Europea. Comisión Europea. H2020, Ockeloen, Charlotte W [0000-0003-0329-1520], Horvath, Rita [0000-0002-9841-170X], Rodenburg, Richard J [0000-0001-5227-3527], Gilissen, Christian [0000-0003-1693-9699], Steyaert, Wouter [0000-0001-8393-0788], Trimouille, Aurélien [0000-0002-3457-5684], Verloes, Alain [0000-0003-4819-0264], Vissers, Lisenka ELM [0000-0001-6470-5497], Apollo - University of Cambridge Repository, de Boer, E., Ockeloen, C. W., Matalonga, L., Horvath, R., Rodenburg, R. J., Coenen, M. J. H., Janssen, M., Henssen, D., Gilissen, C., Steyaert, W., Paramonov, I., Trimouille, A., Kleefstra, T., Verloes, A., Vissers, L. E. L. M., Nigro, V., Torella, A., and Banfi, S.
Subjects: Male, Proband, Mitochondrial DNA, RNA, Transfer, Leu, Brief Communication, Quadriplegia, Whole Exome Sequencing, Healthcare improvement science Radboud Institute for Health Sciences [Radboudumc 18], Young Adult, 03 medical and health sciences, Epilepsy, 0302 clinical medicine, Intellectual Disability, Exome Sequencing, Genetics research, Intellectual disability, Genetics, medicine, Humans, Genetics (clinical), Exome sequencing, 0303 health sciences, Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7], business.industry, Neurodevelopmental disorders, 030305 genetics & heredity, Correction, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], Translational research, medicine.disease, Heteroplasmy, 3. Good health, MT-TL1, Mutation, Inflammatory diseases Radboud Institute for Health Sciences [Radboudumc 5], Spastic tetraparesis, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Neurological disorders, 030217 neurology & neurosurgery
Abstract: Correction: A MT-TL1 variant identified by whole exome sequencing in an individual with intellectual disability, epilepsy, and spastic tetraparesis. Eur J Hum Genet. 2021 Sep;29(9):1470-1471. doi: 10.1038/s41431-021-00937-3. The genetic etiology of intellectual disability remains elusive in almost half of all affected individuals. Within the Solve-RD consortium, systematic re-analysis of whole exome sequencing (WES) data from unresolved cases with (syndromic) intellectual disability (n = 1,472 probands) was performed. This re-analysis included variant calling of mitochondrial DNA (mtDNA) variants, although mtDNA is not specifically targeted in WES. We identified a functionally relevant mtDNA variant in MT-TL1 (NC_012920.1:m.3291T > C; NC_012920.1:n.62T > C), at a heteroplasmy level of 22% in whole blood, in a 23-year-old male with severe intellectual disability, epilepsy, episodic headaches with emesis, spastic tetraparesis, brain abnormalities, and feeding difficulties. Targeted validation in blood and urine supported pathogenicity, with heteroplasmy levels of 23% and 58% in index, and 4% and 17% in mother, respectively. Interestingly, not all phenotypic features observed in the index have been previously linked to this MT-TL1 variant, suggesting either broadening of the m.3291T > C-associated phenotype, or presence of a co-occurring disorder. Hence, our case highlights the importance of underappreciated mtDNA variants identifiable from WES data, especially for cases with atypical mitochondrial phenotypes and their relatives in the maternal line. This work was financially supported by Aspasia grants of the Dutch Research Council (015.014.036 to TK and 015.014.066 to LELMV), the European Research Council (ERC to RH), the Well come Investigator Award (109915/Z/15/Z to RH), the Medical Research Council UK (MR/N025431/1 to RH), the Newton Fund (MR/N027302/1 to RH), the Lily Foundation (RH), and the Evelyn Trust (RH). The Solve-RD project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No. 779257. Sí
Published: 2021
Full Text: View/download PDF

6. Combinatorial pathway disruption is a powerful approach to delineate metabolic impacts of endocrine disruptors

Author: Kévin Bernal, Charbel Touma, Chedi Erradhouani, Talía Boronat‐Belda, Lucas Gaillard, Sara Al Kassir, Hélène Le Mentec, Corinne Martin‐Chouly, Normand Podechard, Dominique Lagadic‐Gossmann, Sophie Langouet, François Brion, Anja Knoll‐Gellida, Patrick J. Babin, Iva Sovadinova, Pavel Babica, Karine Andreau, Robert Barouki, Jan Vondracek, Paloma Alonso‐Magdalena, Etienne Blanc, Min Ji Kim, Xavier Coumoul, Toxicité environnementale, cibles thérapeutiques, signalisation cellulaire (T3S - UMR_S 1124), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Institut de recherche en santé, environnement et travail (Irset), Université d'Angers (UA)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut National de l'Environnement Industriel et des Risques - INERIS (FRANCE), Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III [Madrid] (ISC), Institut d'Investigació Biomèdica de Bellvitge [Barcelone] (IDIBELL), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Univ Rennes, Inserm, EHESP, Irset, UMR S1085, Masaryk University [Brno] (MUNI), Institute of Biophysics of the Czech Academy of Sciences (IBP / CAS), Czech Academy of Sciences [Prague] (CAS), Université d'Angers (UA)-Université de Rennes (UR)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), Institut National de l'Environnement Industriel et des Risques (INERIS), The authors would like to thank the OBERON project (https://oberon-4eu.com/), funded by the European Union's Horizon 2020 research and innovation programme under grant agreement no. 825712, INSERM, Université Paris Cité and INERIS. IS and PB thank the RECETOX Research Infrastructure (no. LM2018121) and the CETOCOEN EXCELLENCE project (no. CZ.02.1.01/0.0/0.0/17_043/0009632) financed by the Ministry of Education, Youth and Sports for supportive background. This work was supported from the European Union's Horizon 2020 research and innovation programme under grant agreement no. 857560., European Project: 825712,H2020-EU.3.1.1. - Understanding health, wellbeing and disease,H2020-SC1-2018-Single-Stage-RTD,OBERON(2019), Jonchère, Laurent, and An integrative strategy of testing systems for identification of EDs related to metabolic disorders - OBERON - - H2020-EU.3.1.1. - Understanding health, wellbeing and disease2019-01-01 - 2019-12-31 - 825712 - VALID
Subjects: phthalate, perfluorinated compounds, [SDV]Life Sciences [q-bio], Biophysics, Cell Biology, dioxin, Biochemistry, appetite, bisphenol, inflammation, insulin resistance, microbiota, TBT, [SDV] Life Sciences [q-bio], Structural Biology, [SDV.TOX]Life Sciences [q-bio]/Toxicology, Genetics, Molecular Biology
Abstract: International audience; The prevalence of metabolic diseases, such as obesity, diabetes, metabolic syndrome and chronic liver diseases among others, has been rising for several years. Epidemiology and mechanistic (in vivo, in vitro and in silico) toxicology have recently provided compelling evidence implicating the chemical environment in the pathogenesis of these diseases. In this review, we will describe the biological processes that contribute to the development of metabolic diseases targeted by metabolic disruptors, and will propose an integrated pathophysiological vision of their effects on several organs. With regard to these pathomechanisms, we will discuss the needs, and the stakes of evolving the testing and assessment of endocrine disruptors to improve the prevention and management of metabolic diseases that have become a global epidemic since the end of last century.
Published: 2022
Full Text: View/download PDF

7. Effects of OP2113 on Myocardial Infarct Size and No Reflow in a Rat Myocardial Ischemia/Reperfusion Model

Author: David Brown, Lifu Zhao, Justin B. Perry, Rodrigue Rossignol, Nivea Dias Amoedo, Wangde Dai, Bruno Le Grand, Juan Carreno, Robert A. Kloner, Aurelie Boucard, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, medicine.medical_specialty, Ischemia, Hemodynamics, Infarction, Ischemia/reperfusion injury, Cardio-protection, 030204 cardiovascular system & hematology, Infarct size, 03 medical and health sciences, 0302 clinical medicine, In vivo, Internal medicine, medicine, Myocyte, Pharmacology (medical), Myocardial infarction, Pharmacology, Coronary artery occlusion, business.industry, No-reflow phenomenon, Skeletal muscle, General Medicine, medicine.disease, Mitochondrial ROS generation, ST elevation myocardial infarction, 030104 developmental biology, medicine.anatomical_structure, No reflow phenomenon, Cardiology, Cardiology and Cardiovascular Medicine, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Purpose : The present study was to determine whether OP2113 could limit myocardial infarction size and the no-reflow phenomenon in a rat myocardial ischemia/reperfusion model. Methods : Rat heart–isolated mitochondria (RHM) were used to investigate mitochondrial respiration and mitochondrial reactive oxygen species (mtROS) generation both in normal conditions and in ischemia/reperfusion-mimicking conditions (using high concentrations of succinate). Human skeletal muscle myoblasts (HSMM) in culture were used to investigate the cellular intermittent deprivation in energy substrates and oxygen as reported in ischemia/reperfusion conditions. In vivo, rats were anesthetized and subjected to 30 min of left coronary artery occlusion followed by 3 h of reperfusion. Rats were randomized to receive OP2113 as an intravenous infusion starting either 5 min prior to coronary artery occlusion (preventive), or 5 min prior to reperfusion (curative), or to receive vehicle starting 5 min prior to coronary artery occlusion. Infusions continued until the end of the study (3 h of reperfusion). Results : RHM treated with OP2113 showed a concentration-dependent reduction of succinate-induced mtROS generation. In HSMM cells, OP2113 treatment (5–10 μM) during 48H prevented the reduction in the steady-state level of ATP measured just after reperfusion injuries and decreased the mitochondrial affinity to oxygen. In vivo, myocardial infarct size, expressed as the percentage of the ischemic risk zone, was significantly lower in the OP2113-treated preventive group (44.5 ± 2.9%) versus that in the vehicle group (57.0 ± 3.6%; p
Published: 2021
Full Text: View/download PDF

8. Effects of capnometry monitoring during recovery in the post-anaesthesia care unit: a randomized controlled trial in adults (CAPNOSSPI)

Author: Stéphanie Roullet, Matthieu Biais, Isabelle Etchebarne, Karine Nouette-Gaulain, Laurent Soubiron, Julien Potvin, Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Adult, medicine.medical_specialty, Health Informatics, Anesthesia, General, Critical Care and Intensive Care Medicine, Hypoxemia, law.invention, Pacu, 03 medical and health sciences, 0302 clinical medicine, Randomized controlled trial, Laryngeal mask airway, Capnography, 030202 anesthesiology, law, Anesthesiology, medicine, Humans, General anaesthesia, Prospective Studies, Hypoxia, medicine.diagnostic_test, biology, business.industry, Respiration, 030208 emergency & critical care medicine, Perioperative, Carbon Dioxide, biology.organism_classification, Post-anaesthesia care unit, 3. Good health, Anesthesiology and Pain Medicine, Anesthesia, medicine.symptom, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Purpose: Continuous capnography should be used on patients admitted to post-anaesthesia care units (PACUs) with endotracheal tubes, but this monitoring is not always performed. Optimized ventilation in the PACU could be part of the global standards of practice to maintain the benefits of perioperative ventilation. The main objective was to study the rate of patients with alveolar hypoventilation before tracheal extubation or Laryngeal Mask Airway (LMA) removal upon the measurement of continuous capnography. Methods: In this prospective, parallel-group, randomized controlled study, we enrolled adult patients admitted to the PACU after general anaesthesia with an endotracheal tube or LMA in place. Patients were randomly assigned to two groups: in the Capno + group, nurses managed the patients with access to the capnometer and end-tidal carbon dioxide pressure (PETCO2) measurements; in the Capno- group, nurses monitored the patients without seeing PETCO2 measurements. The primary outcome was the percentage of patients with PETCO2 measurements above 45 mm Hg during the minute before extubation. Secondary endpoints included the delay in recovering spontaneous breathing, rate of hypoxemia, delay before extubation, and length of stay in the PACU. Results: Forty-eight patients were randomized into the two groups. The percentage of patients with PETCO2 > 45 mm Hg the minute before extubation was significantly decreased in the Capno + group (83.3% versus 54,1% in the Capno- and Capno + groups respectively, p = 0.029). There were no significant differences concerning secondary endpoints. Conclusions: The use of PETCO2 monitoring improves patient safety by decreasing the incidence of CO2 retention during recovery from general anaesthesia. This study suggests that this monitoring should be integrated in the PACU. The risk of hypoxemia can also be prevented through the early recognition of apnoea. Clinical Trial registry: clinicaltrial.gov. identifier: NCT03370081
Published: 2021
Full Text: View/download PDF

9. Clinical and neuroimaging findings in 33 patients with <scp>MCAP</scp> syndrome: A survey to evaluate relevant endpoints for future clinical trials

Author: Florence Petit, Fabienne Giuliano, Juliette Mazereeuw-Hautier, Marjolaine Willems, Christel Thauvin-Robinet, Patricia Blanchet, Laurence Faivre, Elodie Gautier, Anne-Claire Bursztejn, Renaud Touraine, Annick Toutain, Frederico Di Rocco, Maxime Luu, Patrick Edery, Arthur Sorlin, Jean-Luc Alessandri, Nicolas Chassaing, Alice Goldenberg, Christine Chiaverini, Fanny Morice-Picard, Aurore Garde, Stéphanie Arpin, Massimiliano Rossi, Marc Bardou, Claire Nicolas, Gilles Morin, Jenny Cornaton, Cyril Mignot, Christophe Philippe, V. Carmignac, Rodolphe Dard, Joelle Roume, Michèle Mathieu-Dramard, Philippe Khau Van Kien, Pierre Vabres, Didier Lacombe, Diane Doummar, Lucile Pinson, Christine Coubes, Laurent Guibaud, Olivia Boccara, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Adult, Male, 0301 basic medicine, Pediatrics, medicine.medical_specialty, Cutis marmorata, Adolescent, Class I Phosphatidylinositol 3-Kinases, Neuroimaging, Context (language use), Skin Diseases, Vascular, 030105 genetics & heredity, Cohort Studies, Young Adult, 03 medical and health sciences, Genetics, Polymicrogyria, medicine, Humans, PROS, Abnormalities, Multiple, Telangiectasis, Megalencephaly, Child, MCAP syndrome, Genetics (clinical), Chiari malformation, Clinical Trials as Topic, business.industry, Macrocephaly, PIK3CA, medicine.disease, Magnetic Resonance Imaging, 3. Good health, Clinical trial, 030104 developmental biology, Child, Preschool, Postnatal macrocephaly, Female, medicine.symptom, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Forecasting, Ventriculomegaly
Abstract: Megalencephaly-CApillary malformation-Polymicrogyria (MCAP) syndrome results from somatic mosaic gain-of-function variants in PIK3CA. Main features are macrocephaly, somatic overgrowth, cutaneous vascular malformations, connective tissue dysplasia, neurodevelopmental delay, and brain anomalies. The objectives of this study were to describe the clinical and radiological features of MCAP, to suggest relevant clinical endpoints applicable in future trials of targeted drug therapy. Based on a French collaboration, we collected clinical features of 33 patients (21 females, 12 males, median age of 9.9 years) with MCAP carrying mosaic PIK3CA pathogenic variants. MRI images were reviewed for 21 patients. The main clinical features reported were macrocephaly at birth (20/31), postnatal macrocephaly (31/32), body/facial asymmetry (21/33), cutaneous capillary malformations (naevus flammeus 28/33, cutis marmorata 17/33). Intellectual disability was present in 15 patients. Among the MRI images reviewed, the neuroimaging findings were megalencephaly (20/21), thickening of corpus callosum (16/21), Chiari malformation (12/21), ventriculomegaly/hydrocephaly (10/21), cerebral asymmetry (6/21) and polymicrogyria (2/21). This study confirms the main known clinical features that defines MCAP syndrome. Taking into account the phenotypic heterogeneity in MCAP patients, in the context of emerging clinical trials, we suggest that patients should be evaluated based on the main neurocognitive expression on each patient.
Published: 2021
Full Text: View/download PDF

10. Clinical and molecular characterization of adult patients with late-onset MTHFR deficiency

Author: Christian Lavigne, Christoph Kessler, Matthias R. Baumgartner, Patricie Burda, François Feillet, Martina Huemer, Viktor Kožich, Mirian C. H. Janssen, Fanny Mochel, Rebecca Schüle, Pavel Ješina, Karolina M. Stepien, Adeline Regnier, Isabelle Redonnet-Vernhet, Jean-François Benoist, Cecilia Marelli, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Male, Delayed Diagnosis, Methylenetetrahydrofolate reductase deficiency, diagnosis [Muscle Spasticity], Gastroenterology, pathology [Epilepsy], Epilepsy, 0302 clinical medicine, late-onset, Medicine, Age of Onset, Cognitive decline, Child, Genetics (clinical), 0303 health sciences, biology, MTHFR deficiency, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], Middle Aged, 3. Good health, Neurology, Muscle Spasticity, diagnosis [Psychotic Disorders], Homocystinuria, Female, medicine.symptom, pathology [Homocystinuria], Polyneuropathy, pathology [Muscle Spasticity], Adult, diagnosis [Seizures], medicine.medical_specialty, Adolescent, Late onset, Late-onset, Asymptomatic, pathology [Intellectual Disability], Young Adult, 03 medical and health sciences, Seizures, Intellectual Disability, Internal medicine, Genetics, Humans, pathology [Psychotic Disorders], deficiency [Methylenetetrahydrofolate Reductase (NADPH2)], Inherited metabolic disease, inherited metabolic disease, Methylenetetrahydrofolate Reductase (NADPH2), Retrospective Studies, 030304 developmental biology, pathology [Seizures], business.industry, neurology, diagnosis [Homocystinuria], medicine.disease, diagnosis [Epilepsy], Psychotic Disorders, diagnosis [Intellectual Disability], Methylenetetrahydrofolate reductase, biology.protein, business, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Item does not contain fulltext 5,10-Methylenetetrahydrofolate reductase (MTHFR) deficiency usually presents as a severe neonatal disease. This study aimed to characterize natural history, biological and molecular data, and response to treatment of patients with late-onset MTHFR deficiency. The patients were identified through the European Network and Registry for Homocystinuria and Methylation Defects and the Adult group of the French Society for Inherited Metabolic Diseases; data were retrospectively colleted. To identify juvenile to adult-onset forms of the disease, we included patients with a diagnosis established after the age of 10 years. We included 14 patients (median age at diagnosis: 32 years; range: 11-54). At onset (median age: 20 years; range 9-38), they presented with walking difficulties (n = 8), cognitive decline (n = 3) and/or seizures (n = 3), sometimes associated with mild mental retardation (n = 6). During the disease course, symptoms were almost exclusively neurological with cognitive dysfunction (93%), gait disorders (86%), epilepsy (71%), psychiatric symptoms (57%), polyneuropathy (43%), and visual deficit (43%). Mean diagnostic delay was 14 years. Vascular events were observed in 28% and obesity in 36% of the patients. One patient remained asymptomatic at the age of 55 years. Upon treatment, median total homocysteine decreased (from 183 μmol/L, range 69-266, to 90 μmol/L, range 20-142) and symptoms improved (n = 9) or stabilized (n = 4). Missense pathogenic variants in the C-terminal regulatory domain of the protein were over-represented compared to early-onset cases. Residual MTHFR enzymatic activity in skin fibroblasts (n = 4) was rather high (17%-58%). This series of patients with late-onset MTHFR deficiency underlines the still unmet need of a prompt diagnosis of this treatable disease.
Published: 2021
Full Text: View/download PDF

11. Women in Anaesthesia and Intensive Care Medicine in France: Are we making any progress?

Author: Anne-Claire Lukaszewicz, Marie-Laure Cittanova, Hélène Beloeil, Anne Godier, Catherine Paugam-Burtz, Karine Nouette-Gaulain, Innovations thérapeutiques en hémostase (IThEM - U1140), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Clinique Saint Jean de Dieu, Centre d'Investigation Clinique [Rennes] (CIC), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Nutrition, Métabolismes et Cancer (NuMeCan), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre de recherche sur l'Inflammation (CRI (UMR_S_1149 / ERL_8252 / U1149)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Hôpital neurologique et neurochirurgical Pierre Wertheimer [CHU - HCL], Hospices Civils de Lyon (HCL), Physiopathologie de l'immunodépression associée aux réponses inflammatoires systémiques - EA 7426 (PI3), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon, Innovations thérapeutiques en hémostase = Innovative Therapies in Haemostasis (IThEM - U1140), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Université de Rennes (UR)-Hôpital Pontchaillou-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Physiopathologie de l'immunodépression associée aux réponses inflammatoires systémiques / Pathophysiology of Injury-induced Immunosuppression (PI3), and Jonchère, Laurent
Subjects: Critical Care, [SDV]Life Sciences [q-bio], Proportional representation, Population, Specialty, Anaesthesia and Intensive Care Medicine, Critical Care and Intensive Care Medicine, Professional activity, Physicians, Women, 03 medical and health sciences, 0302 clinical medicine, 5. Gender equality, Anesthesiology, Intensive care, Humans, Medicine, Anesthesia, Women, 030212 general & internal medicine, education, Inclusion, Gender equality, education.field_of_study, business.industry, Gender distribution, Gender, 030208 emergency & critical care medicine, General Medicine, 3. Good health, [SDV] Life Sciences [q-bio], Parity, Anesthesiology and Pain Medicine, Workforce, Female, France, business
Abstract: International audience; Introduction: Gender imbalance in medicine is a topic of increasing interest. Gender matters, as there is increasing evidence that a gender diverse medical workforce translates into improved patient outcomes. The gender distribution in France among the Anaesthetists-Intensive Care (AIC) physicians has never been considered.Methods: Gender distribution is described during the last two decades in France among the whole population of AIC physicians according to their age, professional activity, leading and academic position.Results: The proportion of female AIC physicians remained stable from 1999 to 2018, between 35 and 38%. Only 40% of residents choosing this specialty in 2018 were female. Female AIC physicians were under-represented in key medico-political and academic positions: in 2018, 0.7% of the 605 presidents of medical commissions from public hospitals and none of the medical university deans were female AIC physicians; 9% of AIC full Professors were female. In the French Society of Anaesthesia and Intensive Care (SFAR), 42% of the members of the Scientific Committee of our Society are women.Conclusions: A gender imbalance is apparent in French AIC Medicine and worsens as physicians progress through their academic or leadership pathways. The French Society of Anaesthesia and Intensive Care campaigns for proportional representation at all levels of leadership, which translates into more gender equality in the committees of the society, including the Scientific Committee. A major policy shift is urgently required to support women, to tend toward gender parity to increase the performance of the French AIC workforce.
Published: 2020
Full Text: View/download PDF

12. Genome-wide association analyses identify novel Brugada syndrome risk loci and highlight a new mechanism of sodium channel regulation in disease susceptibility

Author: Barc, Julien, Tadros, Rafik, Glinge, Charlotte, Chiang, David Y., Jouni, Mariam, Simonet, Floriane, Jurgens, Sean J., Baudic, Manon, Nicastro, Michele, Potet, Franck, Offerhaus, Joost A., Walsh, Roddy, Choi, Seung Hoan, Verkerk, Arie O., Mizusawa, Yuka, Anys, Soraya, Minois, Damien, Arnaud, Marine, Duchateau, Josselin, Wijeyeratne, Yanushi D., Muir, Alison, Papadakis, Michael, Castelletti, Silvia, Torchio, Margherita, Ortuño, Cristina Gil, Lacunza, Javier, Giachino, Daniela F., Cerrato, Natascia, Martins, Raphaël P., Campuzano, Oscar, Van Dooren, Sonia, Thollet, Aurélie, Kyndt, Florence, Mazzanti, Andrea, Clémenty, Nicolas, Bisson, Arnaud, Corveleyn, Anniek, Stallmeyer, Birgit, Dittmann, Sven, Saenen, Johan, Noël, Antoine, Honarbakhsh, Shohreh, Rudic, Boris, Marzak, Halim, Rowe, Matthew K., Federspiel, Claire, Le Page, Sophie, Placide, Leslie, Milhem, Antoine, Barajas-Martinez, Hector, Beckmann, Britt-Maria, Krapels, Ingrid P., Steinfurt, Johannes, Winkel, Bo Gregers, Jabbari, Reza, Shoemaker, Moore B., Boukens, Bas J., Škorić-Milosavljević, Doris, Bikker, Hennie, Manevy, Federico, Lichtner, Peter, Ribasés, Marta, Meitinger, Thomas, Müller-Nurasyid, Martina, Strauch, Konstantin, Peters, Annette, Schulz, Holger, Schwettmann, Lars, Leidl, Reiner, Heier, Margit, Veldink, Jan H., van den Berg, Leonard H., Van Damme, Philip, Cusi, Daniele, Lanzani, Chiara, Rigade, Sidwell, Charpentier, Eric, Baron, Estelle, Bonnaud, Stéphanie, Lecointe, Simon, Donnart, Audrey, Le Marec, Hervé, Chatel, Stéphanie, Karakachoff, Matilde, Bézieau, Stéphane, London, Barry, Tfelt-Hansen, Jacob, Roden, Dan, Odening, Katja E., Cerrone, Marina, Chinitz, Larry A., Volders, Paul G., van de Berg, Maarten P., Laurent, Gabriel, Faivre, Laurence, Antzelevitch, Charles, Kääb, Stefan, Arnaout, Alain Al, Dupuis, Jean-Marc, Pasquie, Jean-Luc, Billon, Olivier, Roberts, Jason D., Jesel, Laurence, Borggrefe, Martin, Lambiase, Pier D., Mansourati, Jacques, Loeys, Bart, Leenhardt, Antoine, Guicheney, Pascale, Maury, Philippe, Schulze-Bahr, Eric, Robyns, Tomas, Breckpot, Jeroen, Babuty, Dominique, Priori, Silvia G., Napolitano, Carlo, Defaye, Pascal, Anselme, Frédéric, Darmon, Jean Philippe, Wiart, François, de Asmundis, Carlo, Brugada, Pedro, Brugada, Ramon, Arbelo, Elena, Brugada, Josep, Mabo, Philippe, Behar, Nathalie, Giustetto, Carla, Molina, Maria Sabater, Gimeno, Juan R., Hasdemir, Can, Schwartz, Peter J., Crotti, Lia, McKeown, Pascal P., Sharma, Sanjay, Behr, Elijah R., Haissaguerre, Michel, Sacher, Frédéric, Rooryck, Caroline, Tan, Hanno L., Remme, Carol A., Postema, Pieter G., Delmar, Mario, Ellinor, Patrick T., Lubitz, Steven A., Gourraud, Jean-Baptiste, Tanck, Michael W., George, Alfred L., MacRae, Calum A., Burridge, Paul W., Dina, Christian, Probst, Vincent, Wilde, Arthur A., Schott, Jean-Jacques, Redon, Richard, Bezzina, Connie R., KORA-Study Group, Nantes Referral Ctr Inherited Card, unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Nantes Université - UFR de Médecine et des Techniques Médicales (Nantes Univ - UFR MEDECINE), Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Santé, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Centre de recherche Cardio-Thoracique de Bordeaux [Bordeaux] (CRCTB), Université Bordeaux Segalen - Bordeaux 2-CHU Bordeaux [Bordeaux]-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pontchaillou [Rennes], Laboratoire Traitement du Signal et de l'Image (LTSI), Université de Rennes (UR)-Institut National de la Santé et de la Recherche Médicale (INSERM), Santé - François Bonamy, Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche en Santé de l'Université de Nantes (IRS-UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Unité de Recherche sur les Maladies Cardiovasculaires, du Métabolisme et de la Nutrition = Research Unit on Cardiovascular and Metabolic Diseases (ICAN), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Institut de Cardiométabolisme et Nutrition = Institute of Cardiometabolism and Nutrition [CHU Pitié Salpêtrière] (IHU ICAN), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Amsterdam UMC - Amsterdam University Medical Center, The MINE study (J.H.V.) has received funding from the European Research Council (ERC) under the European Union’s Horizon 2020 research and innovation program (grant agreement no. 772376—EScORIAL). The collaboration project is cofunded by the PPP Allowance made available by Health~Holland, Top Sector Life Sciences & Health, to stimulate public–private partnerships. This study makes use of data generated by the Wellcome Trust Case-Control Consortium. A full list of the investigators who contributed to the generation of the data is available from www.wtccc.org.uk. Funding for the project was provided by the Wellcome Trust under award 076113, 085475 and 090355. The KORA research platform (KORA, Cooperative Research in the Region of Augsburg) was initiated and financed by the Helmholtz Zentrum München—German Research Center for Environmental Health, which is funded by the German Federal Ministry of Education and Research and by the State of Bavaria. Furthermore, KORA research was supported within the Munich Center of Health Sciences (MC Health), Ludwig-Maximilians-Universität, as part of LMUinnovativ. J. Barc is supported by the research program Etoiles montantes des Pays de la Loire REGIOCARD RPH081-U1087-REG-PDL, ANR JCJC LEARN (R21006NN, RPV21014NNA) and by the H2020-MSCA-IF-2014 Program of the European Commission (RISTRAD-661617). R.T. is supported by the Canadian Heart Rhythm Society’s George Mines Award, the European Society of Cardiology research award, and the Philippa and Marvin Carsley Cardiology Chair. D.Y.C. is supported by Fondation Leducq and National Institutes of Health (NIH) NHGRI T32 (no. 1T32HG010464-01). M. Baudic was supported by IRP—VERACITIES—New Mechanisms for VEntricular ARrhythmia And CardIomeTabolic DIseasES, an I-SITE NExT health and engineering initiative (Ecole Centrale and Nantes University) and by the IRP—GAINES—Genetic Architecture IN cardiovascular disEaSes funded by INSERM and CNRS. R.W. is supported by an Amsterdam Cardiovascular Sciences fellowship. S.C. is supported by the NHLBI BioData Catalyst Fellows Program. C.A.R. is supported by Fondation Leducq, the Dutch Heart Foundation (CVON PREDICT2) and the Innovational Research Incentives Scheme Vidi grant from the Netherlands Organisation for Health Research and Development (ZonMw, 91714371). Y.D.W. is supported by the Robert Lancaster Memorial Fund. M.P. is supported by Cardiac Risk in the Young. S.V.D. is supported by Wetenschappelijk Fonds Willy Gepts VUB-UZ Brussel, project ‘Unravelling the molecular genetic pathways of Brugada Syndrome by cardiomics research’, VUB IRP project ‘IMAGica: an Integrative personalized Medical Approach for Genetic diseases, Inherited Cardia Arrhythmias as a model’ and Innoviris BRIDGE 2017, project ‘IGenCare: Integrated Personalised Medical Genomics Care Solution for Patients with Rare Genetic Diseases’. S.H. is supported by the Barts BRC. B.R. is supported by the DZHK (German Centre for Cardiovascular Research) and by the BMBF (German Ministry of Education and Research). B.G.W. is supported by the Danish Heart Foundation. M.B.S. is supported by K23HL127704. Project MinE Belgium was supported by a grant from IWT (no. 140935), the ALS Liga België, the National Lottery of Belgium and the KU Leuven Opening the Future Fund. D.C. and C.L. are supported by HYPERGENES (HEALTH-F4-2007). D.R. is supported by R01 HL149826, P50 GM115305. P.J.S. acknowledges the support of Leducq Foundation for Cardiovascular Research grant 18CVD05. P.V.D. is supported by the Netherlands CardioVascular Research Initiative (CVON PREDICT2). C.A. is supported by NIH HL47678 and HL138103, W.W. Smith Charitable Trust and Wistar Morris Fund. M.B. is Supported by the DZHK (German Centre for Cardiovascular Research) and by the BMBF (German Ministry of Education and Research). P.D.L. is supported by UCL/UCLH Biomedicine NIHR and Barts BRC. B.L. is supported by GOA—Antigone 33933. J.B. is supported by a Senior Clinical Fellowship of the Flemish Science Foundation (FWO). E.B. is supported by the British Heart Foundation including BHF Clinical Research Training Fellowship (FS/11/71/28918: Future diagnostic role and new genetic loci in SADS), Cardiac Risk in the Young and Robert Lancaster Memorial fund sponsored by McColl’s Ltd. Retail Group. H.L.T. is supported by the European Union’s Horizon 2020 research and innovation program under acronym ESCAPE-NET, registered under grant agreement no. 733381, and the Dutch Heart Foundation (CVON RESCUED and PREDICT2 projects). M.D. is supported by NIH-RO1 HL134328. P.T.E. was supported by the Fondation Leducq (14CVD01), the NIH (1RO1HL092577, R01HL128914, K24HL105780), the American Heart Association (18SFRN34110082) and by a research grant from Bayer AG to the Broad Institute. S.A.L. is supported by NIH grant 1R01HL139731 and American Heart Association 18SFRN34250007. J.-B.G. received a grant from the Fédération Française de Cardiologie (PREVENT project). A.L.G. is supported by the Fondation Leducq. C.A.M.R. is supported by the Leducq Foundation and Burroughs Wellecome Fund. A.A.W. is supported by the Dutch Heart Foundation (CVON PREDICT2 project). J.-J.S. is supported by the Fondation pour la Recherche Médicale (DEQ20140329545). R.R. and P.G. are supported by the National Agency for Research (ANR-GENSUD-14-CE10-0001). C.R.B. is supported by the Dutch Heart Foundation (CVON PREDICT2 project), the Netherlands Organization for Scientific Research (VICI fellowship, 016.150.610) and Fondation Leducq (17CVD02)., Barc, J, Tadros, R, Glinge, C, Chiang, D, Jouni, M, Simonet, F, Jurgens, S, Baudic, M, Nicastro, M, Potet, F, Offerhaus, J, Walsh, R, Hoan Choi, S, Verkerk, A, Mizusawa, Y, Anys, S, Minois, D, Arnaud, M, Duchateau, J, Wijeyeratne, Y, Muir, A, Papadakis, M, Castelletti, S, Torchio, M, Gil Ortuño, C, Lacunza, J, Giachino, D, Cerrato, N, Martins, R, Campuzano, O, Van Dooren, S, Thollet, A, Kyndt, F, Mazzanti, A, Clémenty, N, Bisson, A, Corveleyn, A, Stallmeyer, B, Dittmann, S, Saenen, J, Noël, A, Honarbakhsh, S, Rudic, B, Marzak, H, Rowe, M, Federspiel, C, Le Page, S, Placide, L, Milhem, A, Barajas-Martinez, H, Beckmann, B, Krapels, I, Steinfurt, J, Gregers Winkel, B, Jabbari, R, Shoemaker, M, Boukens, B, Škorić-Milosavljević, D, Bikker, H, Manevy, F, Lichtner, P, Ribasés, M, Meitinger, T, Müller-Nurasyid, M, Group, K, Veldink, J, van den Berg, L, Van Damme, P, Cusi, D, Lanzani, C, Rigade, S, Charpentier, E, Baron, E, Bonnaud, S, Lecointe, S, Donnart, A, Le Marec, H, Chatel, S, Karakachoff, M, Bézieau, S, London, B, Tfelt-Hansen, J, Roden, D, Odening, K, Cerrone, M, Chinitz, L, Volders, P, van de Berg, M, Laurent, G, Faivre, L, Antzelevitch, C, Kääb, S, Al Arnaout, A, Dupuis, J, Pasquie, J, Billon, O, Roberts, J, Jesel, L, Borggrefe, M, Lambiase, P, Mansourati, J, Loeys, B, Leenhardt, A, Guicheney, P, Maury, P, Schulze-Bahr, E, Robyns, T, Breckpot, J, Babuty, D, Priori, S, Napolitano, C, Referral Center for inherited cardiac arrhythmia, N, de Asmundis, C, Brugada, P, Brugada, R, Arbelo, E, Brugada, J, Mabo, P, Behar, N, Giustetto, C, Sabater Molina, M, Gimeno, J, Hasdemir, C, Schwartz, P, Crotti, L, Mckeown, P, Sharma, S, Behr, E, Haissaguerre, M, Sacher, F, Rooryck, C, Tan, H, Remme, C, Postema, P, Delmar, M, Ellinor, P, Lubitz, S, Gourraud, J, Tanck, M, L. George Jr., A, Macrae, C, Burridge, P, Dina, C, Probst, V, Wilde, A, Schott, J, Redon &amp, R, Bezzina, C, Cardiology, Graduate School, Medical Biology, ACS - Amsterdam Cardiovascular Sciences, ACS - Heart failure & arrhythmias, Human Genetics, ACS - Pulmonary hypertension & thrombosis, ARD - Amsterdam Reproduction and Development, APH - Methodology, Epidemiology and Data Science, MUMC+: DA KG Polikliniek (9), RS: Carim - H02 Cardiomyopathy, Cardiologie, MUMC+: MA Med Staf Spec Cardiologie (9), RS: Carim - H04 Arrhythmogenesis and cardiogenetics, and Cardiovascular Centre (CVC)
Subjects: EXPRESSION, [SDV]Life Sciences [q-bio], DIAGNOSIS, GUIDELINES, ANNOTATION, Article, NAV1.5 Voltage-Gated Sodium Channel, Young Adult, MANAGEMENT, Genetics, GWAS, Humans, Genetic Predisposition to Disease, 610 Medicine & health, SCN5A, Alleles, Brugada Syndrome, Allele, [SDV.GEN]Life Sciences [q-bio]/Genetics, HERITABILITY, Microtubule-Associated Protein, Brugada Syndrome, GWAS, SNPs, COMMON VARIANTS, Mutation, Disease Susceptibility, Human medicine, ENRICHMENT, Microtubule-Associated Proteins, SNPs, Human, GENERATION, Genome-Wide Association Study
Abstract: Brugada syndrome (BrS) is a cardiac arrhythmia disorder associated with sudden death in young adults. With the exception of SCN5A, encoding the cardiac sodium channel Na(V)1.5, susceptibility genes remain largely unknown. Here we performed a genome-wide association meta-analysis comprising 2,820 unrelated cases with BrS and 10,001 controls, and identified 21 association signals at 12 loci (10 new). Single nucleotide polymorphism (SNP)-heritability estimates indicate a strong polygenic influence. Polygenic risk score analyses based on the 21 susceptibility variants demonstrate varying cumulative contribution of common risk alleles among different patient subgroups, as well as genetic associations with cardiac electrical traits and disorders in the general population. The predominance of cardiac transcription factor loci indicates that transcriptional regulation is a key feature of BrS pathogenesis. Furthermore, functional studies conducted on MAPRE2, encoding the microtubule plus-end binding protein EB2, point to microtubule-related trafficking effects on Na(V)1.5 expression as a new underlying molecular mechanism. Taken together, these findings broaden our understanding of the genetic architecture of BrS and provide new insights into its molecular underpinnings. Genome-wide association analyses identify new susceptibility loci for Brugada syndrome. Functional studies implicate microtubule-related trafficking effects on sodium channel expression as an underlying molecular mechanism., European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program [772376-EScORIAL]; Health~Holland; Top Sector Life Sciences Health; Wellcome Trust [076113, 085475, 090355]; Helmholtz Zentrum Munchen-German Research Center for Environmental Health - German Federal Ministry of Education and Research; State of Bavaria; Munich Center of Health Sciences (MC Health), Ludwig-Maximilians-Universitat, as part of LMUinnovativ; research program Etoiles montantes des Pays de la Loire [REGIOCARD RPH081-U1087-REG-PDL]; ANR JCJC LEARN [R21006NN, RPV21014NNA]; H2020-MSCA-IF-2014 Program of the European Commission [RISTRAD-661617]; Canadian Heart Rhythm Society's George Mines Award; European Society of Cardiology research award; Philippa and Marvin Carsley Cardiology Chair; Fondation Leducq; National Institutes of Health (NIH) NHGRI T32 [1T32HG010464-01]; IRP-VERACITIES-New Mechanisms for VEntricular ARrhythmia And CardIomeTabolic DIseasES an I-SITE NExT health and engineering initiative (Ecole Centrale); IRP-VERACITIES-New Mechanisms for VEntricular ARrhythmia And CardIomeTabolic DIseasES an I-SITE NExT health and engineering initiative (Nantes University); IRP-GAINES-Genetic Architecture IN cardiovascular disEaSes - INSERM; CNRS; Amsterdam Cardiovascular Sciences fellowship; NHLBI BioData Catalyst Fellows Program; Dutch Heart Foundation [CVON PREDICT2]; Innovational Research Incentives Scheme Vidi grant from the Netherlands Organisation for Health Research and Development (ZonMw) [91714371]; Robert Lancaster Memorial Fund; Cardiac Risk in the Young; Wetenschappelijk Fonds Willy Gepts VUB-UZ Brussel; VUB IRP project `IMAGica: an Integrative personalized Medical Approach for Genetic diseases, Inherited Cardia Arrhythmias as a model' and Innoviris BRIDGE 2017; project `IGenCare: Integrated Personalised Medical Genomics Care Solution for Patients with Rare Genetic Diseases'; Barts BRC; DZHK (German Centre for Cardiovascular Research); BMBF (German Ministry of Education and Research); Danish Heart Foundation; IWT [140935]; ALS Liga Belgie; National Lottery of Belgium; KU Leuven Opening the Future Fund; HYPERGENES [HEALTH-F4-2007]; Leducq Foundation for Cardiovascular Research grant [18CVD05]; Netherlands CardioVascular Research Initiative [CVON PREDICT2]; NIH [HL47678, HL138103, 1RO1HL092577, R01HL128914, K24HL105780]; W.W. Smith Charitable Trust; Wistar Morris Fund; GOA-Antigone [33933]; Senior Clinical Fellowship of the Flemish Science Foundation (FWO); British Heart Foundation; BHF Clinical Research Training Fellowship [FS/11/71/28918]; Cardiac Risk in the Young and Robert Lancaster Memorial fund - McColl's Ltd. Retail Group; European Union's Horizon 2020 research and innovation program under acronym ESCAPE-NET [733381]; Dutch Heart Foundation; Fondation Leducq [14CVD01, 17CVD02]; American Heart Association [18SFRN34110082, 18SFRN34250007]; Bayer AG; NIH grant [1R01HL139731]; Federation Francaise de Cardiologie (PREVENT project); Leducq Foundation; Burroughs Wellecome Fund; Fondation pour la Recherche Medicale [DEQ20140329545]; National Agency for Research [ANR-GENSUD-14-CE10-0001]; Netherlands Organization for Scientific Research (VICI fellowship) [016.150.610]; [K23HL127704]; [R01 HL149826]; [P50 GM115305]; [NIH-RO1 HL134328], We are greatly indebted to the patients included in the study. We thank V. Cotard, C. Goutsmedt, M.-F. Le Cunff and N. Bourgeais for assistance in patient recruitment and L. Beekman for his technical support. We thank the biological resource centre for biobanking (CHU Nantes, Nantes Universite, Centre de ressources biologiques (BB0033-00040), F-44000 Nantes, France) for applying the following guidelines68. We are most grateful to the Genomics and Bioinformatics Core Facility of Nantes (GenoBiRD, Biogenouest, IFB) for its technical support. This research has been conducted using the UK Biobank resource; we are grateful to UK Biobank participants. The MINE study (J.H.V.) has received funding from the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation program (grant agreement no. 772376-EScORIAL). The collaboration project is cofunded by the PPP Allowance made available by Health~Holland, Top Sector Life Sciences & Health, to stimulate public-private partnerships. This study makes use of data generated by the Wellcome Trust Case-Control Consortium. A full list of the investigators who contributed to the generation of the data is available from www.wtccc.org.uk.Funding for the project was provided by the Wellcome Trust under award 076113, 085475 and 090355. The KORA research platform (KORA, Cooperative Research in the Region of Augsburg) was initiated and financed by the Helmholtz Zentrum Munchen-German Research Center for Environmental Health, which is funded by the German Federal Ministry of Education and Research and by the State of Bavaria. Furthermore, KORA research was supported within the Munich Center of Health Sciences (MC Health), Ludwig-Maximilians-Universitat, as part of LMUinnovativ. J. Barc is supported by the research program Etoiles montantes des Pays de la Loire REGIOCARD RPH081-U1087-REG-PDL, ANR JCJC LEARN (R21006NN, RPV21014NNA) and by the H2020-MSCA-IF-2014 Program of the European Commission (RISTRAD-661617). R.T. is supported by the Canadian Heart Rhythm Society's George Mines Award, the European Society of Cardiology research award, and the Philippa and Marvin Carsley Cardiology Chair. D.Y.C. is supported by Fondation Leducq and National Institutes of Health (NIH) NHGRI T32 (no. 1T32HG010464-01). M. Baudic was supported by IRP-VERACITIES-New Mechanisms for VEntricular ARrhythmia And CardIomeTabolic DIseasES, an I-SITE NExT health and engineering initiative (Ecole Centrale and Nantes University) and by the IRP-GAINES-Genetic Architecture IN cardiovascular disEaSes funded by INSERM and CNRS. R.W. is supported by an Amsterdam Cardiovascular Sciences fellowship. S.C. is supported by the NHLBI BioData Catalyst Fellows Program. C.A.R. is supported by Fondation Leducq, the Dutch Heart Foundation (CVON PREDICT2) and the Innovational Research Incentives Scheme Vidi grant from the Netherlands Organisation for Health Research and Development (ZonMw; 91714371). Y.D.W. is supported by the Robert Lancaster Memorial Fund. M.P. is supported by Cardiac Risk in the Young. S.V.D. is supported by Wetenschappelijk Fonds Willy Gepts VUB-UZ Brussel, project `Unravelling the molecular genetic pathways of Brugada Syndrome by cardiomics research', VUB IRP project `IMAGica: an Integrative personalized Medical Approach for Genetic diseases, Inherited Cardia Arrhythmias as a model' and Innoviris BRIDGE 2017, project `IGenCare: Integrated Personalised Medical Genomics Care Solution for Patients with Rare Genetic Diseases'. S.H. is supported by the Barts BRC. B.R.; is supported by the DZHK (German Centre for Cardiovascular Research) and by the BMBF (German Ministry of Education and Research). B.G.W. is supported by the Danish Heart Foundation. M.B.S. is supported by K23HL127704. Project MinE Belgium was supported by a grant from IWT (no. 140935), the ALS Liga Belgie, the National Lottery of Belgium and the KU Leuven Opening the Future Fund. D.C. and C.L. are supported by HYPERGENES (HEALTH-F4-2007). D.R. is supported by R01 HL149826, P50 GM115305. P.J.S. acknowledges the support of Leducq Foundation for Cardiovascular Research grant 18CVD05. P.V.D. is supported by the Netherlands CardioVascular Research Initiative (CVON PREDICT2). C.A. is supported by NIH HL47678 and HL138103, W.W. Smith Charitable Trust and Wistar Morris Fund. M.B. is Supported by the DZHK (German Centre for Cardiovascular Research) and by the BMBF (German Ministry of Education and Research). P.D.L. is supported by UCL/UCLH Biomedicine NIHR and Barts BRC. B.L. is supported by GOA-Antigone 33933. J.B. is supported by a Senior Clinical Fellowship of the Flemish Science Foundation (FWO). E.B. is supported by the British Heart Foundation including BHF Clinical Research Training Fellowship (FS/11/71/28918: Future diagnostic role and new genetic loci in SADS), Cardiac Risk in the Young and Robert Lancaster Memorial fund sponsored by McColl's Ltd. Retail Group. H.L.T. is supported by the European Union's Horizon 2020 research and innovation program under acronym ESCAPE-NET, registered under grant agreement no. 733381, and the Dutch Heart Foundation (CVON RESCUED and PREDICT2 projects). M.D. is supported by NIH-RO1 HL134328. P.T.E. was supported by the Fondation Leducq (14CVD01), the NIH (1RO1HL092577, R01HL128914, K24HL105780), the American Heart Association (18SFRN34110082) and by a research grant from Bayer AG to the Broad Institute. S.A.L. is supported by NIH grant 1R01HL139731 and American Heart Association 18SFRN34250007. J.-B.G. received a grant from the Federation Francaise de Cardiologie (PREVENT project). A.L.G. is supported by the Fondation Leducq. C.A.M.R. is supported by the Leducq Foundation and Burroughs Wellecome Fund. A.A.W. is supported by the Dutch Heart Foundation (CVON PREDICT2 project). J.-J.S. is supported by the Fondation pour la Recherche Medicale (DEQ20140329545). R.R. and P.G. are supported by the National Agency for Research (ANR-GENSUD-14-CE10-0001). C.R.B. is supported by the Dutch Heart Foundation (CVON PREDICT2 project), the Netherlands Organization for Scientific Research (VICI fellowship, 016.150.610) and Fondation Leducq (17CVD02).
Published: 2022
Full Text: View/download PDF

13. Whole-exome sequencing confirms implication of VPS13D as a potential cause of progressive spastic ataxia

Author: Christelle M. Durand, Chloé Angelini, Vincent Michaud, Claire Delleci, Isabelle Coupry, Cyril Goizet, Aurelien Trimouille, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU de Bordeaux Pellegrin [Bordeaux], Bordeaux population health (BPH), Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM), and Malbec, Odile
Subjects: Adult, Mitochondrial network, Spastic Paraplegia, Hereditary, [SDV]Life Sciences [q-bio], Whole exome sequencing, Proteins, Spastic ataxia, General Medicine, Middle Aged, Pedigree, [SDV] Life Sciences [q-bio], Optic Atrophy, Phenotype, Muscle Spasticity, Intellectual Disability, Mutation, Exome Sequencing, VPS13D, Humans, Spinocerebellar Ataxias, Neurology. Diseases of the nervous system, Neurology (clinical), Child, RC346-429
Abstract: Background VPS13D is a large ubiquitin-binding protein playing an essential role in mitophagy by regulating mitochondrial fission. Recently, VPS13D biallelic pathogenic variants have been reported in patients displaying variable neurological phenotypes, with an autosomic recessive inheritance. The objectives of the study were to determine the genetic etiology of a patient with early onset sporadic progressive spastic ataxia, and to investigate the pathogenicity of VPS13D variants through functional studies on patient’s skin fibroblasts. Case presentation We report the case of a 51-year-old patient with spastic ataxia, with an acute onset of the disease at age 7. Walking difficulties slowly worsened over time, with the use of a wheelchair since age 26. We have used trio-based whole-exome sequencing (WES) to identify genes associated with spastic ataxia. The impact of the identified variants on mitochondrial function was assessed in patient’s fibroblasts by imaging mitochondrial network and measuring level of individual OXPHOS complex subunits. Compound heterozygous variants were identified in VPS13D: c.946C > T, p.Arg316* and c.12416C > T, p.(Ala4139Val). Primary fibroblasts obtained from this patient revealed an altered mitochondrial morphology, and a decrease in levels of proteins from complex I, III and IV. Conclusions Our findings confirmed implication of VPS13D in spastic ataxia and provided further support for mitochondrial defects in patient’s skin fibroblasts with VPS13D variants. This report of long-term follow up showed a slowly progressive course of the spastic paraplegia with cerebellar features. Furthermore, the performed functional studies could be used as biomarker helping diagnosis of VPS13D-related neurological disorders when molecular results are uneasy to interpret.
Published: 2022
Full Text: View/download PDF

14. Clinical Utility of a Unique Genome-Wide DNA Methylation Signature for KMT2A-Related Syndrome

Author: Aidin Foroutan, Sadegheh Haghshenas, Pratibha Bhai, Michael A. Levy, Jennifer Kerkhof, Haley McConkey, Marcello Niceta, Andrea Ciolfi, Lucia Pedace, Evelina Miele, David Genevieve, Solveig Heide, Mariëlle Alders, Giuseppe Zampino, Giuseppe Merla, Mélanie Fradin, Eric Bieth, Dominique Bonneau, Klaus Dieterich, Patricia Fergelot, Elise Schaefer, Laurence Faivre, Antonio Vitobello, Silvia Maitz, Rita Fischetto, Cristina Gervasini, Maria Piccione, Ingrid van de Laar, Marco Tartaglia, Bekim Sadikovic, Anne-Sophie Lebre, Foroutan A., Haghshenas S., Bhai P., Levy M.A., Kerkhof J., McConkey H., Niceta M., Ciolfi A., Pedace L., Miele E., Genevieve D., Heide S., Alders M., Zampino G., Merla G., Fradin M., Bieth E., Bonneau D., Dieterich K., Fergelot P., Schaefer E., Faivre L., Vitobello A., Maitz S., Fischetto R., Gervasini C., Piccione M., van de Laar I., Tartaglia M., Sadikovic B., Lebre A.-S., Human Genetics, ACS - Pulmonary hypertension & thrombosis, ARD - Amsterdam Reproduction and Development, University of Western Ontario (UWO), London Health Sciences Center (LHSC), IRCCS Ospedale Pediatrico Bambino Gesù [Roma], Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Amsterdam UMC - Amsterdam University Medical Center, University of Amsterdam [Amsterdam] (UvA), Fondazione Policlinico Universitario Agostino Gemelli IRCCS, Università cattolica del Sacro Cuore = Catholic University of the Sacred Heart [Roma] (Unicatt), University of Naples Federico II = Università degli studi di Napoli Federico II, Fondazione Casa Sollievo della Sofferenza [San Giovanni Rotondo, Italy] (FC2S), Service de génétique clinique [Rennes], Université de Rennes (UR)-CHU Pontchaillou [Rennes]-hôpital Sud, Service de génétique [Angers], Université d'Angers (UA)-Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM)-PRES Université Nantes Angers Le Mans (UNAM), MitoVasc - Physiopathologie Cardiovasculaire et Mitochondriale (MITOVASC), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Institute for Advanced Biosciences / Institut pour l'Avancée des Biosciences (Grenoble) (IAB), Centre Hospitalier Universitaire [Grenoble] (CHU)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Etablissement français du sang - Auvergne-Rhône-Alpes (EFS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Les Hôpitaux Universitaires de Strasbourg (HUS), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Agro Dijon, Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), San Gerardo Hospital [Monza, Italy] (SGH), Hospital Papa Giovanni XXIII (Hosp P Giovanni XXIII), Università degli Studi di Milano = University of Milan (UNIMI), Università degli studi di Palermo - University of Palermo, Erasmus University Medical Center [Rotterdam] (Erasmus MC), Institut de psychiatrie et neurosciences de Paris (IPNP - U1266 Inserm), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Service de génétique [Reims], Centre Hospitalier Universitaire de Reims (CHU Reims), Foroutan, A., Haghshenas, S., Bhai, P., Levy, M. A., Kerkhof, J., Mcconkey, H., Niceta, M., Ciolfi, A., Pedace, L., Miele, E., Genevieve, D., Heide, S., Alders, M., Zampino, G., Merla, G., Fradin, M., Bieth, E., Bonneau, D., Dieterich, K., Fergelot, P., Schaefer, E., Faivre, L., Vitobello, A., Maitz, S., Fischetto, R., Gervasini, C., Piccione, M., van de Laar, I., Tartaglia, M., Sadikovic, B., Lebre, A. -S., Martinez Rico, Clara, and Clinical Genetics
Subjects: Wiedemann–Steiner syndrome, QH301-705.5, Intellectual disability, [SDV.BC]Life Sciences [q-bio]/Cellular Biology, Catalysis, Inorganic Chemistry, KMT2A gene, Neurodevelopmental disorder, Growth Disorder, Abnormalities, Multiple, [SDV.NEU] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Biology (General), Physical and Theoretical Chemistry, Episignature, QD1-999, [SDV.BC] Life Sciences [q-bio]/Cellular Biology, Molecular Biology, Spectroscopy, DNA methylation, Organic Chemistry, Neurodevelopmental disorders, Craniofacial Abnormalitie, Epigenetic, Hypertrichosi, General Medicine, Facie, Computer Science Applications, Chemistry, epigenetics, episignature, intellectual disability, neurodevelopmental disorders, Phenotype, [SDV.NEU]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC], Epigenetics, Human
Abstract: Wiedemann–Steiner syndrome (WDSTS) is a Mendelian syndromic intellectual disability (ID) condition associated with hypertrichosis cubiti, short stature, and characteristic facies caused by pathogenic variants in the KMT2A gene. Clinical features can be inconclusive in mild and unusual WDSTS presentations with variable ID (mild to severe), facies (typical or not) and other associated malformations (bone, cerebral, renal, cardiac and ophthalmological anomalies). Interpretation and classification of rare KMT2A variants can be challenging. A genome-wide DNA methylation episignature for KMT2A-related syndrome could allow functional classification of variants and provide insights into the pathophysiology of WDSTS. Therefore, we assessed genome-wide DNA methylation profiles in a cohort of 60 patients with clinical diagnosis for WDSTS or Kabuki and identified a unique highly sensitive and specific DNA methylation episignature as a molecular biomarker of WDSTS. WDSTS episignature enabled classification of variants of uncertain significance in the KMT2A gene as well as confirmation of diagnosis in patients with clinical presentation of WDSTS without known genetic variants. The changes in the methylation profile resulting from KMT2A mutations involve global reduction in methylation in various genes, including homeobox gene promoters. These findings provide novel insights into the molecular etiology of WDSTS and explain the broad phenotypic spectrum of the disease.
Published: 2022
Full Text: View/download PDF

15. Sphingosine-1-Phosphate Levels Are Higher in Male Patients with Non-Classic Fabry Disease

Author: Wladimir Mauhin, Abdellah Tebani, Damien Amelin, Lenaig Abily-Donval, Foudil Lamari, Jonathan London, Claire Douillard, Bertrand Dussol, Vanessa Leguy-Seguin, Esther Noel, Agathe Masseau, Didier Lacombe, Hélène Maillard, Soumeya Bekri, Olivier Lidove, Olivier Benveniste, Médecine interne [Diaconesses Croix Saint-Simon], Groupe Hospitalier Diaconesses Croix Saint-Simon, Centre de recherche en Myologie – U974 SU-INSERM, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Institut de Myologie, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Association française contre les myopathies (AFM-Téléthon)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Rouen, Normandie Université (NU), Service de Biochimie Métabolique [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Hôpital Jeanne de Flandres, Université de Lille, Droit et Santé-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), CHU Marseille, Centre d'Investigation Clinique [Hôpital de la Conception - APHM] (CIC), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Hôpital de la Conception [CHU - APHM] (LA CONCEPTION), Service de médecine interne et immunologie clinique (SOC 1) [CHU de Dijon], Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Strasbourg, Centre hospitalier universitaire de Nantes (CHU Nantes), Hôtel-Dieu de Nantes, CHU Bordeaux [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Lille, Hôpital Claude Huriez [Lille], Université de Lille, Service de Département de médecine interne et immunologie clinique [CHU Pitié-Salpêtrière] (DMIIC), Benveniste, olivier, and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)
Subjects: [SDV.MHEP.EM] Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, Fabry disease, hypertrophic cardiomyopathy, sphingosine-1-phosphate, fibrosis, migalastat, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, lipids (amino acids, peptides, and proteins), General Medicine, [SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system
Abstract: International audience; Fabry disease is an X-linked lysosomal disease in which defects in the alpha-galactosidase A enzyme activity lead to the ubiquitous accumulation of glycosphingolipids. Whereas the classic disease is characterized by neuropathic pain, progressive renal failure, white matter lesions, cerebral stroke, and hypertrophic cardiomyopathy (HCM), the non-classic phenotype, also known as cardiac variant, is almost exclusively characterized by HCM. Circulating sphingosine-1-phosphate (S1P) has controversially been associated with the Fabry cardiomyopathy. We measured serum S1P levels in 41 patients of the FFABRY cohort. S1P levels were higher in patients with a non-classic phenotype compared to those with a classic phenotype (200.3 [189.6–227.9] vs. 169.4 ng/mL [121.1–203.3], p = 0.02). In a multivariate logistic regression model, elevated S1P concentration remained statistically associated with the non-classic phenotype (OR = 1.03; p < 0.02), and elevated lysoGb3 concentration with the classic phenotype (OR = 0.95; p < 0.03). S1P levels were correlated with interventricular septum thickness (r = 0.46; p = 0.02). In a logistic regression model including S1P serum levels, phenotype, and age, age remained the only variable significantly associated with the risk of HCM (OR = 1.25; p = 0.001). S1P alone was not associated with cardiac hypertrophy but with the cardiac variant. The significantly higher S1P levels in patients with the cardiac variant compared to those with classic Fabry suggest the involvement of distinct pathophysiological pathways in the two phenotypes. S1P dosage could allow the personalization of patient management.
Published: 2022
Full Text: View/download PDF

16. Safety and efficacy of riluzole in spinocerebellar ataxia type 2 in France (ATRIL): a multicentre, randomised, double-blind, placebo-controlled trial

Author: Giulia Coarelli, Anna Heinzmann, Claire Ewenczyk, Clara Fischer, Marie Chupin, Marie-Lorraine Monin, Hortense Hurmic, Fabienne Calvas, Patrick Calvas, Cyril Goizet, Stéphane Thobois, Mathieu Anheim, Karine Nguyen, David Devos, Christophe Verny, Vito A G Ricigliano, Jean-François Mangin, Alexis Brice, Sophie Tezenas du Montcel, Alexandra Durr, Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Building large instruments for neuroimaging: from population imaging to ultra-high magnetic fields (BAOBAB), Service NEUROSPIN (NEUROSPIN), Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Direction de Recherche Fondamentale (CEA) (DRF (CEA)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Pellegrin, CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Hôpital neurologique et neurochirurgical Pierre Wertheimer [CHU - HCL], Hospices Civils de Lyon (HCL), Institut des sciences cognitives Marc Jeannerod - Centre de neuroscience cognitive - UMR5229 (ISC-MJ), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Hôpital de Hautepierre [Strasbourg], Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg (UNISTRA), Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Marseille, Lille Neurosciences & Cognition - U 1172 (LilNCog), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), CHU Lille, Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Institut Pierre Louis d'Epidémiologie et de Santé Publique (iPLESP), Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Algorithms, models and methods for images and signals of the human brain (ARAMIS), Sorbonne Université (SU)-Inria de Paris, Institut National de Recherche en Informatique et en Automatique (Inria)-Institut National de Recherche en Informatique et en Automatique (Inria)-Institut du Cerveau = Paris Brain Institute (ICM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Institut des sciences cognitives Marc Jeannerod - Centre de neuroscience cognitive - UMR5229 (CNC), and Coarelli, Giulia
Subjects: [SDV] Life Sciences [q-bio], [SDV]Life Sciences [q-bio], Neurology (clinical)
Abstract: International audience; BackgroundRiluzole has been reported to be beneficial in patients with cerebellar ataxia; however, effectiveness in individual subtypes of disease is unclear due to heterogeneity in participants' causes and stages of disease. Our aim was to test riluzole in a single genetic disease, spinocerebellar ataxia type 2.MethodsWe did a randomised, double-blind, placebo-controlled, multicentre trial (the ATRIL study) at eight national reference centres for rare diseases in France that were part of the Neurogene National Reference Centre for Rare Diseases. Participants were patients with spinocerebellar ataxia type 2 with an age at disease onset of up to 50 years and a scale for the assessment and rating of ataxia (SARA) score of at least 5 and up to 26. Patients were randomly assigned centrally (1:1) to receive either riluzole 50 mg orally or placebo twice per day for 12 months. Two visits, at baseline and at 12 months, included clinical measures and 3T brain MRI. The primary endpoint was the proportion of patients whose SARA score improved by at least 1 point. Analyses were done in the intention-to-treat population (all participants who were randomly assigned) and were done with only the observed data (complete case analysis). This trial is registered at ClinicalTrials.gov (NCT03347344) and has been completed.FindingsBetween Jan 18, 2018, and June 14, 2019, we enrolled 45 patients. 22 patients were randomly assigned to receive riluzole and 23 to receive placebo. Median age was 42 years (IQR 36–57) in the riluzole group and 49 years (40–56) in the placebo group and 23 (51%) participants were women. All participants presented with moderate-stage disease, characterised by a median SARA score of 13·5 (IQR 9·5–16·5). The primary endpoint, SARA score improvement of at least 1 point after 12 months, was observed in seven patients (32%) in the treated group versus nine patients (39%) in the placebo group, with a mean difference of −10·3% (95% CI −37·4% to 19·2%; p=0·75). SARA score showed a median increase (ie, worsening) of 0·5 points (IQR −1·5 to 1·5) in the riluzole group versus 0·3 points (−1·0 to 2·5) in the placebo group (p=0·70). No serious adverse event was reported in the riluzole-treated group whereas four patients in placebo group had a serious adverse event (hepatic enzyme increase, fracture of external malleolus, rectorrhagia, and depression). The number of patients with adverse events was similar in both groups (riluzole 16 [73%] patients vs placebo 19 [83%] patients; p=0·49).InterpretationWe were able to recruit 45 patients moderately affected by spinocerebellar ataxia type 2 for this trial. Riluzole did not improve clinical or radiological outcomes in these patients. However, our findings provide data on progression of spinocerebellar ataxia type 2 that might prove to be valuable for the design of other clinical trials.
Published: 2022
Full Text: View/download PDF

17. Discovery of a genetic module essential for assigning left–right asymmetry in humans and ancestral vertebrates

Author: Emmanuelle Szenker-Ravi, Tim Ott, Muznah Khatoo, Anne Moreau de Bellaing, Wei Xuan Goh, Yan Ling Chong, Anja Beckers, Darshini Kannesan, Guillaume Louvel, Priyanka Anujan, Vydianathan Ravi, Carine Bonnard, Sébastien Moutton, Patric Schoen, Mélanie Fradin, Estelle Colin, André Megarbane, Linda Daou, Ghassan Chehab, Sylvie Di Filippo, Caroline Rooryck, Jean-François Deleuze, Anne Boland, Nicolas Arribard, Rukiye Eker, Sumanty Tohari, Alvin Yu-Jin Ng, Marlène Rio, Chun Teck Lim, Birgit Eisenhaber, Frank Eisenhaber, Byrappa Venkatesh, Jeanne Amiel, Hugues Roest Crollius, Christopher T. Gordon, Achim Gossler, Sudipto Roy, Tania Attie-Bitach, Martin Blum, Patrice Bouvagnet, Bruno Reversade, ACS - Heart failure & arrhythmias, ARD - Amsterdam Reproduction and Development, Genome Institute of Singapore (GIS), University of Hohenheim, Groupement Hospitalier Lyon-Est (GHE), Hospices Civils de Lyon (HCL), Institute of Molecular and Cell Biology [Singapore, Singapore] (IMCB / A*STAR), National University Hospital [Singapore] (NUH), Centre Hospitalier Universitaire de Liège (CHU-Liège), Hannover Medical School [Hannover] (MHH), REBIRTH Cluster of Excellence [Hannover], Institut de biologie de l'ENS Paris (IBENS), Département de Biologie - ENS Paris, École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-École normale supérieure - Paris (ENS-PSL), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Ecologie Systématique et Evolution (ESE), AgroParisTech-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Hammersmith Hospital NHS Imperial College Healthcare, Skin Research Institute of Singapore [Singapore, Singapore] (SRIS / A*STAR), Maison de Santé Protestante de Bordeaux-Bagatelle (MSPB), Praxis Dr Patric SCHÖN [Oberschleissheim, Germany] (2PS), CHU Pontchaillou [Rennes], Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Gilbert and Rose-Marie Chagoury School of Medicine [Lebanese American University], Lebanese American University (LAU), Institut Jérôme Lejeune, Université Saint-Joseph de Beyrouth (USJ), Lebanese University [Beirut] (LU), Cardiovasculaire, métabolisme, diabétologie et nutrition (CarMeN), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre National de Recherche en Génomique Humaine (CNRGH), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Hôpital Universitaire des Enfants Reine Fabiola [Bruxelles, Belgique] (HUDERF), Istanbul University, Assistance publique-Hôpitaux de Paris - Espace éthique (AP-HP Espace éthique), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Necker - Enfants Malades [AP-HP], Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Singapore Institute of Food and Biotechnology Innovation [Singapore, Singapore] (SIFBI / A*STAR ), Bioinformatics Institute [Singapore, Singapore] (BII / A*STAR), Nanyang Technological University [Singapour], National University of Singapore (NUS), Service de Génétique Médicale [CHU Necker], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Necker - Enfants Malades [AP-HP], Maison de la Femme de la Mère et de l'Enfant [CHU de la Martinique] (MFME [Fort de France]), CHU de la Martinique [Fort de France], Koc University School of Medicine [Istanbul, Turkey] (KUSOM), and CarMeN, laboratoire
Subjects: [SDV] Life Sciences [q-bio], Loss of Function Mutation, [SDV]Life Sciences [q-bio], Vertebrates, Metalloproteases, Genetics, Animals, Humans, Proteins, Gene Regulatory Networks, Cilia, Biological Evolution, Body Patterning
Abstract: Erratum in Publisher Correction: Discovery of a genetic module essential for assigning left-right asymmetry in humans and ancestral vertebrates. Szenker-Ravi E, Ott T, Khatoo M, Moreau de Bellaing A, Goh WX, Chong YL, Beckers A, Kannesan D, Louvel G, Anujan P, Ravi V, Bonnard C, Moutton S, Schoen P, Fradin M, Colin E, Megarbane A, Daou L, Chehab G, Di Filippo S, Rooryck C, Deleuze JF, Boland A, Arribard N, Eker R, Tohari S, Ng AY, Rio M, Lim CT, Eisenhaber B, Eisenhaber F, Venkatesh B, Amiel J, Crollius HR, Gordon CT, Gossler A, Roy S, Attie-Bitach T, Blum M, Bouvagnet P, Reversade B.Nat Genet. 2022 Jun;54(6):906. doi: 10.1038/s41588-022-01053-8.PMID: 35304595 No abstract available.; International audience; The vertebrate left-right axis is specified during embryogenesis by a transient organ: the left-right organizer (LRO). Species including fish, amphibians, rodents and humans deploy motile cilia in the LRO to break bilateral symmetry, while reptiles, birds, even-toed mammals and cetaceans are believed to have LROs without motile cilia. We searched for genes whose loss during vertebrate evolution follows this pattern and identified five genes encoding extracellular proteins, including a putative protease with hitherto unknown functions that we named ciliated left-right organizer metallopeptide (CIROP). Here, we show that CIROP is specifically expressed in ciliated LROs. In zebrafish and Xenopus, CIROP is required solely on the left side, downstream of the leftward flow, but upstream of DAND5, the first asymmetrically expressed gene. We further ascertained 21 human patients with loss-of-function CIROP mutations presenting with recessive situs anomalies. Our findings posit the existence of an ancestral genetic module that has twice disappeared during vertebrate evolution but remains essential for distinguishing left from right in humans.
Published: 2022
Full Text: View/download PDF

18. Chromatin Structure and Dynamics: Focus on Neuronal Differentiation and Pathological Implication

Author: Nothof, Sophie A., Magdinier, Frédérique, Van-Gils, Julien, Marseille medical genetics - Centre de génétique médicale de Marseille (MMG), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), and Caugant, Julien
Subjects: [SDV] Life Sciences [q-bio], epigenetics, chromatinopathies, [SDV]Life Sciences [q-bio], [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], chromatin, histone modification, methylation, neuronal differentiation, [SDV.BDD]Life Sciences [q-bio]/Development Biology, acetylation
Abstract: International audience; Chromatin structure is an essential regulator of gene expression. Its state of compaction contributes to the regulation of genetic programs, in particular during differentiation. Epigenetic processes, which include post-translational modifications of histones, DNA methylation and implication of non-coding RNA, are powerful regulators of gene expression. Neurogenesis and neuronal differentiation are spatio-temporally regulated events that allow the formation of the central nervous system components. Here, we review the chromatin structure and post-translational histone modifications associated with neuronal differentiation. Studying the impact of histone modifications on neuronal differentiation improves our understanding of the pathophysiological mechanisms of chromatinopathies and opens up new therapeutic avenues. In addition, we will discuss techniques for the analysis of histone modifications on a genome-wide scale and the pathologies associated with the dysregulation of the epigenetic machinery.
Published: 2022
Full Text: View/download PDF

19. Challenging the traditional approach for interpreting genetic variants: Lessons from Fabry disease

Author: Dominique P. Germain, Thierry Levade, Eric Hachulla, Bertrand Knebelmann, Didier Lacombe, Vanessa Leguy Seguin, Karine Nguyen, Esther Noël, Jean‐Pierre Rabès, Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), AP-HP. Université Paris Saclay, Centre de Recherches en Cancérologie de Toulouse (CRCT), Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Hôpital Claude Huriez [Lille], CHU Lille, Faculté de Médecine Henri Warembourg - Université de Lille, CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Bordeaux [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Laboratoire de Génétique Moléculaire [Hôpital de la Timone - APHM], Département de génétique médicale [Hôpital de la Timone - APHM], Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)- Hôpital de la Timone [CHU - APHM] (TIMONE)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Strasbourg, Takeda Pharmaceutical Company, TPC, Sanofi Genzyme, D.P.G.: Consultant for Sanofi‐Genzyme, Idorsia, Takeda, speaker's honoraria from Takeda, Amicus, Sanofi‐Genzyme. T.L.: Hotel/travel grants from Sanofi‐Genzyme, Takeda, BioMarin, Enzyvant, Orphan. E.H.: Speaker's honoraria and/or travel grants from Sanofi‐ Genzyme, GSK, Actelion, Sobi, B.K.: Speaker's honoraria from Travere, Sanofi, Alnylam, Reata, hotel/travel grants from Sanofi, Travere, Reata, D.L.: Speaker's honoraria and hotel/travel expenses from Amicus, Sanofi‐Genzyme. V.L.S.: Speaker's honoraria from Sanofi‐Genzyme, hotel/travel grants from Amicus, Orphan, Takeda, Sanofi‐Genzyme, K.N.: Speaker's honoraria, travel grants from Sanofi Genzyme, grants from Amicus therapeutics, E.N.: Speaker's honoraria and/or travel grants from Amicus Therapeutics, Sanofi‐Genzyme. J.P.R.: Consultant for Sanofi‐Genzyme, hotel/travel expenses from Amicus Therapeutics, speaker's honoraria from Amgen., and The authors received editorial/writing support in the preparation of this manuscript that was founded by Sanofi Genzyme, but no payment for writing this publication. The authors are responsible for the content of this manuscript and the decision to submit the manuscript for publication.
Subjects: Fabry disease, genetic variants, [SDV]Life Sciences [q-bio], experts, ACMG criteria, Phenotype, Gene Frequency, alpha-Galactosidase, Mutation, Genetics, Humans, Female, pathogenicity interpretation, Genetics (clinical), variants of unknown significance
Abstract: International audience; Fabry disease (FD) is an X-linked genetic disease due to pathogenic variants in GLA. The phenotype varies depending on the GLA variant, alpha-galactosidase residual activity, patient's age and gender and, for females, X chromosome inactivation. Over 1000 variants have been identified, many through screening protocols more susceptible to disclose non-pathogenic variants or variants of unknown significance (VUS). This, together with the non-specificity of some FD symptoms, challenges physicians attempting to interpret GLA variants. The traditional way to interpreting pathogenicity is based on a combined approach using allele frequencies, genomic databases, global and disease-specific clinical databases, and in silico tools proposed by the American College of Medical Genetics and Genomics. Here, a panel of FD specialists convened to study how expertise may compare with the traditional approach. Several GLA VUS, highly controversial in the literature (p.Ser126Gly, p.Ala143Thr, p.Asp313Tyr), were re-analyzed through reviews of patients' charts. The same was done for pathogenic GLA variants with some specificities. Our data suggest that input of geneticists and physicians with wide expertise in disease phenotypes, prevalence, inheritance, biomarkers, alleles frequencies, disease-specific databases, and literature greatly contribute to a more accurate interpretation of the pathogenicity of variants, bringing a significant additional value over the traditional approach.
Published: 2022
Full Text: View/download PDF

20. Cardiovascular and connective tissue disorder features in FLNA-related PVNH patients: progress towards a refined delineation of this syndrome

Author: Clarisse Billon, Salma Adham, Natalia Hernandez Poblete, Anne Legrand, Michael Frank, Laurent Chiche, Stephane Zuily, Karelle Benistan, Laurent Savale, Khaoula Zaafrane-Khachnaoui, Anne-Claire Brehin, Laurence Bal, Tiffany Busa, Mélanie Fradin, Chloé Quelin, Bertrand Chesneau, Denis Wahl, Patricia Fergelot, Cyril Goizet, Tristan Mirault, Xavier Jeunemaitre, Juliette Albuisson, Bordeaux-cohort collaborators, Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), Paris-Centre de Recherche Cardiovasculaire (PARCC (UMR_S 970/ U970)), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Saint-Éloi [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Hôpital Pellegrin, CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, CHU Bordeaux [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université Paris-Sorbonne (UP4), Défaillance Cardiovasculaire Aiguë et Chronique (DCAC), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lorraine (UL), Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Hôpital Raymond Poincaré [AP-HP], Handicap neuromusculaire : Physiopathologie, Biothérapie et Pharmacologies appliquées (END-ICAP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Adhésion et Inflammation (LAI), Aix Marseille Université (AMU)-Assistance Publique - Hôpitaux de Marseille (APHM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Hôpital Marie-Lannelongue, Hôpital Bicêtre, Hôpital l'Archet, Génomique et Médecine Personnalisée du Cancer et des Maladies Neuropsychiatriques (GPMCND), Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Rouen, Normandie Université (NU), Hôpital de la Timone [CHU - APHM] (TIMONE), Hôpital Sud [CHU Rennes], CHU Pontchaillou [Rennes], Centre de référence Maladies Rares CLAD-Ouest [Rennes], Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Centre Régional de Lutte contre le cancer Georges-François Leclerc [Dijon] (UNICANCER/CRLCC-CGFL), UNICANCER, Bordeaux-cohort collaborators: Anne Dieux, Fabien Labombarda, Sylvain Rheims, Odile Boute, André Vincentelli, Annick Toutain, Sylvie Odent, Gaetan Lesca, Marie Vincent, Juliette Piard, Maud Favier, Philippe Derambure, Patrick Edery, Susanne Thummler, Marion Gérard, Fanny Morice-Picard, Valérie Layet, Cécile Laroche, Laurent Pasquier, Elisabeth Sarrazin, Thierry Billette de Villemeur, Lucie Guyant-Marechal, and Adham, Salma
Subjects: Aortic aneurysm and dissection, Research, Filamins, General Medicine, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Cardiovascular anomalies, Connective tissue disorder, Ehlers–Danlos, FLNA, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Periventricular Nodular Heterotopia, Connective Tissue, Medicine, Humans, Pharmacology (medical), Connective Tissue Diseases, Genetics (clinical), Retrospective Studies
Abstract: Background FLNA Loss-of-Function (LoF) causes periventricular nodular heterotopia type 1 (PVNH1), an acknowledged cause of seizures of various types. Neurological symptoms are inconstant, and cardiovascular (CV) defects or connective tissue disorders (CTD) have regularly been associated. We aimed at refining the description of CV and CTD features in patients with FLNA LoF and depicting the multisystemic nature of this condition. Methods We retrospectively evaluated FLNA variants and clinical presentations in FLNA LoF patient with at least one CV or CTD feature, from three cohorts: ten patients from the French Reference Center for Rare Vascular Diseases, 23 patients from the national reference diagnostic lab for filaminopathies-A, and 59 patients from literature review. Results Half of patients did not present neurological symptoms. Most patients presented a syndromic association combining CV and CTD features. CV anomalies, mostly aortic aneurysm and/or dilation were present in 75% of patients. CTD features were present in 75%. Variants analysis demonstrated an enrichment of coding variants in the CH1 domain of FLNA protein. Conclusion In FLNA LoF patients, the absence of seizures should not be overlooked. When considering a diagnosis of PVNH1, the assessment for CV and CTD anomalies is of major interest as they represent interlinked features. We recommend systematic study of FLNA within CTD genes panels, regardless of the presence of neurological symptoms.
Published: 2021
Full Text: View/download PDF

21. Proteomic Study of Low-Birth-Weight Nephropathy in Rats

Author: Nivea Dias Amoedo, Didier Lacombe, Rodrigue Rossignol, Toshiyuki Imasawa, Stéphane Claverol, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Chiba University Hospital, Université de Bordeaux (UB), Cellomet [CHU Pellegrin, Bordeaux], CHU de Bordeaux Pellegrin [Bordeaux], and Admin, Oskar
Subjects: Male, Proteome, medicine.medical_treatment, 030232 urology & nephrology, Mitochondrion, Oxidative Phosphorylation, Pathogenesis, Electron Transport Complex III, 0302 clinical medicine, Focal segmental glomerulosclerosis, Pregnancy, Birth Weight, Biology (General), Spectroscopy, 0303 health sciences, Kidney, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, General Medicine, 3. Good health, Computer Science Applications, mitochondria, Chemistry, Mitochondrial respiratory chain, medicine.anatomical_structure, nephropathy, Female, Kidney Diseases, medicine.drug, medicine.medical_specialty, kidney, NF-E2-Related Factor 2, QH301-705.5, Intraperitoneal injection, Biology, Article, Catalysis, Nephropathy, Inorganic Chemistry, 03 medical and health sciences, proteomics, Internal medicine, medicine, Animals, low birth weight, Physical and Theoretical Chemistry, Molecular Biology, QD1-999, Dexamethasone, 030304 developmental biology, Organic Chemistry, Infant, Low Birth Weight, medicine.disease, Rats, Rapamycin-Insensitive Companion of mTOR Protein, Endocrinology, Animals, Newborn, Biomarkers, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; The hyperfiltration theory has been used to explain the mechanism of low birth weight (LBW)-related nephropathy. However, the molecular changes in the kidney proteome have not been defined in this disease, and early biomarkers are lacking. We investigated the molecular pathogen-esis of LBW rats obtained by intraperitoneal injection of dexamethasone into pregnant animals. Nor-mal-birth-weight (NBW) rats were used as controls. When the rats were four weeks old, the left kidneys were removed and used for comprehensive label-free proteomic studies. Following uninephrectomy, all rats were fed a high-salt diet until 9 weeks of age. Differences in the molecular composition of the kidney cortex were observed at the early step of LBW nephropathy pathogenesis. Untargeted quantitative proteomics showed that proteins involved in energy metabolism, such as oxidative phosphorylation (OXPHOS), the TCA cycle, and glycolysis, were specifically downregu-lated in the kidneys of LBW rats at four weeks. No pathological changes were detected at this early stage. Pathway analysis identified NEFL2 (NRF2) and RICTOR as potential upstream regulators. The search for biomarkers identified components of the mitochondrial respiratory chain, namely, ubiquinol-cytochrome c reductase complex subunits (UQCR7/11) and ATP5I/L, two components of mitochondrial F1FO-ATP synthase. These findings were further validated by immunohistology. At later stages of the disease process, the right kidneys revealed an increased frequency of focal segmental glomerulosclerosis lesions, interstitial fibrosis and tubular atrophy. Our findings revealed proteome changes in LBW rat kidneys and revealed a strong downregulation of specific mitochon-drial respiratory chain proteins, such as UQCR7.
Published: 2021
Full Text: View/download PDF

22. Albinism: An Underdiagnosed Condition

Author: Eulalie Lasseaux, Vincent Michaud, Benoit Arveiler, CCSD, Accord Elsevier, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), and CHU Bordeaux [Bordeaux]
Subjects: Heterozygote, medicine.medical_specialty, [SDV]Life Sciences [q-bio], Prenatal diagnosis, Dermatology, Biochemistry, Diagnosis, Differential, 030207 dermatology & venereal diseases, 03 medical and health sciences, 0302 clinical medicine, Pregnancy, Oculocutaneous albinism type 1, Prenatal Diagnosis, medicine, Humans, Molecular diagnostic techniques, Molecular Biology, ComputingMilieux_MISCELLANEOUS, 030304 developmental biology, 0303 health sciences, business.industry, Heterozygote advantage, Syndrome, Cell Biology, medicine.disease, [SDV] Life Sciences [q-bio], Ophthalmology, Phenotype, Molecular Diagnostic Techniques, Albinism, Oculocutaneous, Albinism, Female, business
Abstract: International audience; No abstract available
Published: 2020
Full Text: View/download PDF

23. Changes in dynamic arterial elastance induced by volume expansion and vasopressor in the operating room: a prospective bicentre study

Author: Philippe Boyer, Musa Sesay, Romain Grobost, Matthieu Biais, Romain Lanchon, Karine Nouette-Gaulain, Emmanuel Futier, Hugues de Courson, Service Anesthésie - Réanimation [Bordeaux], CHU Bordeaux [Bordeaux], Service d'Anésthésie Réanimation [CHU Clermont-Ferrand], CHU Estaing [Clermont-Ferrand], CHU Clermont-Ferrand-CHU Clermont-Ferrand, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Retinoids, Development and Developmental Diseases (R2D2), Université d'Auvergne - Clermont-Ferrand I (UdA), Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), This study was supported from institutional and departmental sources., Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), and Boullé, Christelle
Subjects: Cardiac output, medicine.medical_specialty, Mean arterial pressure, Critical Care and Intensive Care Medicine, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, 030202 anesthesiology, Internal medicine, Heart rate, Article CLINIQUE, medicine, Arterial pressure, business.industry, Research, Doppler, lcsh:Medical emergencies. Critical care. Intensive care. First aid, 030208 emergency & critical care medicine, Stroke volume, lcsh:RC86-88.9, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Pulse pressure, Compliance (physiology), Blood pressure, Cardiology, Arterial line, business
Abstract: Background Dynamic arterial elastance (Eadyn), defined as the ratio between pulse pressure variations and stroke volume variations, has been proposed to assess functional arterial load. We evaluated the evolution of Eadyn during volume expansion and the effects of neosynephrine infusion in hypotensive and preload-responsive patients. Methods In this prospective bicentre study, we included 56 mechanically ventilated patients in the operating room. Each patient had volume expansion and neosynephrine infusion. Stroke volume and stroke volume variations were obtained using esophageal Doppler, and pulse pressure variations were measured through the arterial line. Pressure response to volume expansion was defined as an increase in mean arterial pressure (MAP) ≥ 10%. Results Twenty-one patients were pressure responders to volume expansion. Volume expansion induced a decrease in Eadyn (from 0.69 [0.58–0.85] to 0.59 [0.42–0.77]) related to a decrease in pulse pressure variations more pronounced than the decrease in stroke volume variations. Baseline and changes in Eadyn after volume expansion were related to age, history of arterial hypertension, net arterial compliance and effective arterial elastance. Eadyn value before volume expansion > 0.65 predicted a MAP increase ≥ 10% with a sensitivity of 76% (95% CI 53–92%) and a specificity of 60% (95% CI 42–76%). Neosynephrine infusion induced a decrease in Eadyn (from 0.67 [0.48–0.80] to 0.54 [0.37–0.68]) related to a decrease in pulse pressure variations more pronounced than the decrease in stroke volume variations. Baseline and changes in Eadyn after neosynephrine infusion were only related to heart rate. Conclusion Eadyn is a potential sensitive marker of arterial tone changes following vasopressor infusion.
Published: 2019
Full Text: View/download PDF

24. Evaluation of least significant changes of pulse contour analysis-derived parameters

Author: Eric Verchère, Matthieu Biais, Gregoire Cane, Hugues de Courson, Karine Nouette-Gaulain, Musa Sesay, Loic Ferrer, Service Anesthésie - Réanimation [Bordeaux], CHU Bordeaux [Bordeaux], Cancer et génome: Bioinformatique, biostatistiques et épidémiologie d'un système complexe, Institut Curie [Paris]-MINES ParisTech - École nationale supérieure des mines de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), This study was supported from institutional and departmental sources., Boullé, Christelle, Mines Paris - PSL (École nationale supérieure des mines de Paris), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), and Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: medicine.medical_specialty, Fluid responsiveness, Cardiac index, Critical Care and Intensive Care Medicine, 03 medical and health sciences, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, 030202 anesthesiology, Contour analysis, Internal medicine, Occlusion, Article CLINIQUE, Medicine, Pulse (signal processing), business.industry, Research, Pulse pressure variation, lcsh:Medical emergencies. Critical care. Intensive care. First aid, 030208 emergency & critical care medicine, Stroke volume, lcsh:RC86-88.9, Precision, Pulse pressure, Lung recruitment, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Stroke volume variation, Cardiology, business, Pulse contour
Abstract: Background Many maneuvers assessing fluid responsiveness (minifluid challenge, lung recruitment maneuver, end-expiratory occlusion test, passive leg raising) are considered as positive when small variations in cardiac index, stroke volume index, stroke volume variation or pulse pressure variation occur. Pulse contour analysis allows continuous and real-time cardiac index, stroke volume, stroke volume variation and pulse pressure variation estimations. To use these maneuvers with pulse contour analysis, the knowledge of the minimal change that needs to be measured by a device to recognize a real change (least significant change) has to be studied. The aim of this study was to evaluate the least significant change of cardiac index, stroke volume index, stroke volume variation and pulse pressure variation obtained using pulse contour analysis (ProAQT®, Pulsion Medical System, Germany). Methods In this observational study, we included 50 mechanically ventilated patients undergoing neurosurgery in the operating room. Cardiac index, stroke volume index, pulse pressure variation and stroke volume variation obtained using ProAQT® (Pulsion Medical System, Germany) were recorded every 12 s during 15-min steady-state periods. Least significant changes were calculated every minute. Results Least significant changes statistically differed over time for cardiac index, stroke volume index, pulse pressure variation and stroke volume variation (p Conclusion To conclude, the present study suggests that pulse contour analysis is able to detect rapid and small changes in cardiac index and stroke volume index, but the interpretation of rapid and small changes of pulse pressure variation and stroke volume variation must be done with caution.
Published: 2019
Full Text: View/download PDF

25. Genetic diversity and pathogenic variants as possible predictors of severity in a French sample of nonsyndromic heritable thoracic aortic aneurysms and dissections (nshTAAD)

Author: Nadine Hanna, Tiffany Busa, Mélodie Aubart, Bruno Leheup, Laurence Faivre, Maud Langeois, Laurent Gouya, Jacques Ropers, Patrice Bouvagnet, Sophie Dupuis-Girod, Sophie Naudion, Louise Benarroch, Didier Lacombe, Olivier Milleron, Sylvie Odent, Maria Tchitchinadze, Guillaume Jondeau, Catherine Boileau, Pauline Arnaud, Yves Dulac, Thomas Edouard, Laurence Bal, Département de Génétique (Hôpital Bichat), Laboratoire de Recherche Vasculaire Translationnelle (LVTS (UMR_S_1148 / U1148)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)-Université Sorbonne Paris Nord, Département de Génétique et Centre de Référence Maladies Rares Syndrome de Marfan et pathologies apparentées (AP HP, hôpital Bichat), AP-HP - Hôpital Bichat - Claude Bernard [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Service de Chirurgie Vasculaire (SCV-AP-MM Marseille), Hôpital Nord AP‐MM Marseille, France (AP‐MM Marseille), Hôpital Louis Pradel [CHU - HCL], Hospices Civils de Lyon (HCL), Service de pédiatrie multidisciplinaire [Hôpital de la Timone Enfants - APHM], Hôpital de la Timone [CHU - APHM] (TIMONE), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU de Bordeaux Pellegrin [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Universitaire de Nancy (CHU Nancy), Hôpital Sud [CHU Rennes], CHU Pontchaillou [Rennes], Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO), and CARBILLET, Véronique
Subjects: Male, Proband, class 4 and 5 variants, Fibrillin-1, SMAD3 gene, MESH: Fibrillin-1 / genetics, [SDV.MHEP.MI]Life Sciences [q-bio]/Human health and pathology/Infectious diseases, MESH: Child, Pathology, Molecular, MESH: Aneurysm, Dissecting / genetics, Child, MESH: High-Throughput Nucleotide Sequencing, Genetics (clinical), MESH: Aged, Aortic dissection, Genetics, FBN1 gene, MESH: Genetic Predisposition to Disease, High-Throughput Nucleotide Sequencing, Middle Aged, Predictive value, Pedigree, Codon, Nonsense, NGS, MESH: Aortic Aneurysm, Thoracic / genetics, [SDV.MHEP.MI] Life Sciences [q-bio]/Human health and pathology/Infectious diseases, Female, Premature Termination Codon, Adult, Adolescent, Autosomal dominant transmission, Young Adult, medicine, Humans, Genetic Predisposition to Disease, Genetic Testing, Smad3 Protein, MESH: Codon, Nonsense / genetics, Gene, Aged, MESH: Adolescent, Genetic diversity, Aortic Aneurysm, Thoracic, business.industry, Genetic heterogeneity, MESH: Aortic Aneurysm, Thoracic / diagnosis, MESH: Aneurysm, Dissecting / diagnosis, MESH: Adult, MESH: Genetic Testing / methods, medicine.disease, thoracic aortic aneurysms and dissections, Aortic Dissection, Mutation, business, MESH: Aneurysm, Dissecting / physiopathology, MESH: Female
Abstract: International audience; Purpose : Heritable thoracic aortic aneurysms and dissections (hTAAD) are life-threatening complications of well-known syndromic diseases or underdiagnosed nonsyndromic heritable forms (nshTAAD). Both have an autosomal dominant transmission and are genetically heterogeneous. Our objective was to describe the relevance of molecular diagnosis in these patients and the contribution of each gene in nshTAAD. Methods : Two hundred twenty-six consecutive nshTAAD probands, either young (
Published: 2019
Full Text: View/download PDF

26. LC-MS/MS measurements of urinary guanidinoacetic acid and creatine: Method optimization by deleting derivatization step

Author: Rucheton Benoit, Amintas Samuel, Ducint Dominique, Julian Boutin, Redonnet-Vernhet Isabelle, Colombies Brigitte, Mesli Samir, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, [SDV]Life Sciences [q-bio], Urinary system, Clinical Biochemistry, Glycine, Guanidinoacetate methyltransferase deficiency, Urine, Creatine, Biochemistry, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Tandem Mass Spectrometry, Lc ms ms, medicine, Humans, Language Development Disorders, Derivatization, Chromatography, High Pressure Liquid, Movement Disorders, Chromatography, Clinical Laboratory Techniques, Chemistry, Ion pairing, Biochemistry (medical), General Medicine, medicine.disease, 3. Good health, 030104 developmental biology, 030220 oncology & carcinogenesis, Guanidinoacetate N-Methyltransferase, Creatine deficiency
Abstract: Cerebral Creatine deficiency syndromes (CCDS) include three hereditary diseases affecting the metabolism of creatine (Cr): arginine glycine amidinotransferase deficiency, guanidinoacetate methyltransferase deficiency and disorders of creatine transporter. These pathologies cause a brain creatine deficiency responsible of non-specific neurological impairments with mental retardation. LC-MS/MS measurements of guanidinoacetic acid (GAA) and creatine in urine and plasma are an important screening test to identify the deficit. Analysis of this polar and basic molecules not hold on standard column requires a derivatization step to butyl-esters. To overcome this long and fastidious derivatization, an ion pairing (IP) method was chosen in this study.IP method was validated using Comité francais d'accréditation (COFRAC) recommendations. Then, urine GAA and creatine of 15 patients with a CDS deficiency suspected were tested y LC-MS/MS using IP technique, and performances were assessed with reference laboratory method (butylation method). Moreover, references values were suggested y the study of 100 urines samples of healthy patients.The method developed provided a good accuracy and precision with intra and inter-day coefficients of variation (CVs)15%. The curve was linear for the biological and pathological concentrations. The comparison with the reference method did not reveal any significant difference for analytical performances but showed a simplification of the preparation of samples.The use of IP technique that we have developed demonstrated a good correlation with the butylation method. Moreover, this new method not only allows a simplification of the technique, but also decreases in run time.
Published: 2019
Full Text: View/download PDF

27. First description of an IgM monoclonal antibody causing αIIbβ3 integrin activation and acquired Glanzmann thrombasthenia associated with macrothrombocytopenia

Author: Bernard Payrastre, Chloé James, Alexandre Guy, Marie Tuffigo, Xavier Pillois, Jean-François Viallard, Martine Jandrot-Perrus, Émeline Choquet, Jean-Claude Bordet, Mathieu Fiore, Cédric Garcia, Biologie des maladies cardiovasculaires = Biology of Cardiovascular Diseases, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), Centre de référence des pathologies plaquettaires (CRPP), CHU Bordeaux [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Toulouse [Toulouse], Hôpital Louis Pradel [CHU - HCL], Hospices Civils de Lyon (HCL), Laboratoire de Recherche Vasculaire Translationnelle (LVTS (UMR_S_1148 / U1148)), Université Paris Diderot - Paris 7 (UPD7)-Université Paris 13 (UP13)-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut des Maladies Métaboliques et Cardiovasculaires (I2MC), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées, Boullé, Christelle, Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Université Paris 13 (UP13)-Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Université Toulouse III - Paul Sabatier (UT3), and Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: media_common.quotation_subject, Integrin, 030204 cardiovascular system & hematology, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, [SDV.MHEP.CSC]Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, Medicine, Platelet, Ristocetin, Internalization, ComputingMilieux_MISCELLANEOUS, media_common, biology, business.industry, Autoantibody, Hematology, Phenotype, [SDV.MHEP.CSC] Life Sciences [q-bio]/Human health and pathology/Cardiology and cardiovascular system, 3. Good health, chemistry, Article RECHERCHE, Immunology, biology.protein, Phosphorylation, Antibody, business
Abstract: Essentials Acquired Glanzmann thrombasthenia (GT) is generally caused by anti-αIIb β3 autoantibodies. We report the case of a man with an acquired GT phenotype associated with macrothrombocytopenia. Perturbed platelet function were associated with an activating anti-αIIb β3 IgM autoantibody. This novel clinical entity raises interesting questions about the αIIb β3 integrin signaling. SUMMARY: Background Acquired Glanzmann thrombasthenia (GT) is a bleeding disorder generally caused by anti-αII b β3 autoantibodies. Objectives We aimed to characterize the molecular mechanism leading to a progressive GT-like phenotype in a patient with chronic immune thrombocytopenia. Patient, Methods, and Results The patient suffered from repeated episodes of gastrointestinal bleeding; further studies indicated a moderate platelet aggregation defect. A few months later, platelet function showed abolished aggregation using all agonists, but normal agglutination with ristocetin. No platelet-bound antibodies were detected, but the presence of large amounts of an IgM type antibody detected together with αII b β3 in the patient permeabilized platelets suggested that this IgM was an autoantibody causing the internalization of the complex. This was confirmed by the fact that the patient IgM bound to normal platelets but not to platelets from GT type I patients. Moreover, patient's plasma activated αII b β3 on controls' platelets as evidenced by increased PAC-1 binding. We also demonstrated that the patient plasma triggered αII b β3 outside-in signaling, as β3 Tyr773 and FAK were phosphorylated, and increased the rate of actin polymerization in resting platelets reflecting an impairment of cytoskeletal reorganization. Because different signs of dysmegakaryopoiesis were also observed in our patient, we evaluated the ability of its serum to impair proplatelets formation and showed that it significantly decreased the number of proplatelet-bearing megakaryocytes in controls' bone marrow stem cells culture compared with normal serum. Conclusions We present the case of a patient with a progressive and severely perturbed platelet function associated with the presence of an IgM activating autoantibody directed against αII b β3 .
Published: 2019
Full Text: View/download PDF

28. 10 years of CEMARA database in the AnDDI-Rares network: a unique resource facilitating research and epidemiology in developmental disorders in France

Author: MESSIAEN, Claude, RACINE, Caroline, KHATIM, Ahlem, SOUSSAND, Louis, ODENT, Sylvie, LACOMBE, Didier, MANOUVRIER, Sylvie, EDERY, Patrick, SIGAUDY, Sabine, GENEVIEVE, David, THAUVIN-ROBINET, Christel, PASQUIER, Laurent, PETIT, Florence, ROSSI, Massimiliano, WILLEMS, Marjolaine, ATTIE-BITACH, Tania, ROUX-LEVY, Pierre-Henry, DEMOUGEOT, Laurent, BEN SLAMA, Lilia, LANDAIS, Paul, THE ANDDI-RARES, Network, JANNOT, Anne-Sophie, BINQUET, Christine, SANDRIN, Arnaud, VERLOES, Alain, FAIVRE, Laurence, CHU Dijon, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), CHU Pontchaillou [Rennes], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], CHU Lille, Maladies RAres du DEveloppement embryonnaire et du MEtabolisme : du Phénotype au Génotype et à la Fonction - ULR 7364 (RADEME), Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), Hospices Civils de Lyon (HCL), CHU Marseille, Hôpital de la Timone [CHU - APHM] (TIMONE), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, FHU TRANSLAD (CHU de Dijon), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Université de Montpellier (UM), GHU AP-HP Centre Université de Paris, Centre d'Investigation Clinique 1432 (Dijon) - Epidemiologie Clinique/Essais Cliniques (CIC-EC), Université de Bourgogne (UB)-Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Robert Debré, Maladies neurodéveloppementales et neurovasculaires (NeuroDiderot (UMR_S_1141 / U1141)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), CHU Montpellier, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC)
Subjects: Adult, 0301 basic medicine, medicine.medical_specialty, Resource (biology), Databases, Factual, Epidemiology, Developmental Disabilities, Population, 030105 genetics & heredity, computer.software_genre, 03 medical and health sciences, Rare Diseases, 0302 clinical medicine, Data warehouse, Care organization, Humans, Medicine, Pharmacology (medical), 030212 general & internal medicine, Medical diagnosis, Child, education, Genetics (clinical), Retrospective Studies, education.field_of_study, Database, business.industry, Research, Developmental disorders, General Medicine, 3. Good health, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Uncertain diagnosis, Christian ministry, France, business, computer, Rare disease, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Background In France, the Ministry of Health has implemented a comprehensive program for rare diseases (RD) that includes an epidemiological program as well as the establishment of expert centers for the clinical care of patients with RD. Since 2007, most of these centers have entered the data for patients with developmental disorders into the CEMARA population-based registry, a national online data repository for all rare diseases. Through the CEMARA web portal, descriptive demographic data, clinical data, and the chronology of medical follow-up can be obtained for each center. We address the interest and ongoing challenges of this national data collection system 10 years after its implementation. Methods Since 2007, clinicians and researchers have reported the “minimum dataset (MDS)” for each patient presenting to their expert center. We retrospectively analyzed administrative data, demographic data, care organization and diagnoses. Results Over 10 years, 228,243 RD patients (including healthy carriers and family members for whom experts denied any suspicion of RD) have visited an expert center. Among them, 167,361 were patients affected by a RD (median age 11 years, 54% children, 46% adults, with a balanced sex ratio), and 60,882 were unaffected relatives (median age 37 years). The majority of patients (87%) were seen no more than once a year, and 52% of visits were for a diagnostic procedure. Among the 2,869 recorded rare disorders, 1,907 (66.5%) were recorded in less than 10 patients, 802 (28%) in 10 to 100 patients, 149 (5.2%) in 100 to 1,000 patients, and 11 (0.4%) in > 1,000 patients. Overall, 45.6% of individuals had no diagnosis and 6.7% had an uncertain diagnosis. Children were mainly referred by their pediatrician (46%; n = 55,755 among the 121,136 total children referrals) and adults by a medical specialist (34%; n = 14,053 among the 41,564 total adult referrals). Given the geographical coverage of the centers, the median distance from the patient’s home was 25.1 km (IQR = 6.3 km-64.2 km). Conclusions CEMARA provides unprecedented support for epidemiological, clinical and therapeutic studies in the field of RD. Researchers can benefit from the national scope of CEMARA data, but also focus on specific diseases or patient subgroups. While this endeavor has been a major collective effort among French RD experts to gather large-scale data into a single database, it provides tremendous potential to improve patient care.
Published: 2021
Full Text: View/download PDF

29. Clinical description and mutational profile of a moroccan series of patients with rubinstein taybi syndrome

Author: Benoit Arveiler, Didier Lacombe, Ilham Ratbi, Siham Chafai Elalaoui, Mariam Tajir, Julien Van-Gils, Wiam Smaili, Patricia Fergelot, Abdelaziz Sefiani, Université Mohammed V de Rabat [Agdal], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut National d'Hygiène [Maroc], Admin, Oskar, and Université Mohammed V de Rabat [Agdal] (UM5)
Subjects: Male, Microcephaly, Pediatrics, medicine.medical_specialty, Genetic counseling, 030231 tropical medicine, Moroccan, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, Short stature, Polymerase Chain Reaction, Rubinstein Taybi syndrome, 03 medical and health sciences, symbols.namesake, 0302 clinical medicine, medicine, otorhinolaryngologic diseases, Humans, CREBBP gene, EP300, Child, Sanger sequencing, Rubinstein-Taybi Syndrome, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, Rubinstein–Taybi syndrome, business.industry, Infant, General Medicine, Articles, medicine.disease, Major gene, 3. Good health, Developmental disorder, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Child, Preschool, Mutation, symbols, Female, medicine.symptom, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Background: Rubinstein-Taybi syndrome (RSTS; OMIM 180849) is a rare autosomal dominant developmental disorder with an estimated prevalence of one case per 125,000 live births. RSTS is characterized by typical face, broad thumbs and halluces, short stature, and intellectual disability. Facial dysmorphy is characteristic with microcephaly, low frontal hairline, arched eyebrows, long eyelashes, convex profile of nose, narrow palate, and micrognathia. RSTS is mainly due to mutations or microdeletions of the CREBBP gene (about 60%) and more rarely of the EP300 gene (8%). Objective: Clinical description and identification of mutations of patients with Rubinstein Taybi syndrome. Methods: PCR and direct sequencing of CREBBP gene. Results: We report here, the clinical and molecular data of a series of six Moroccan patients with a phenotype of RSTS. The molecular study of the major gene CREBBP (by Sanger Sequencing followed by CGH array, if sequence normal) revealed point mutations in five patients. For the sixth patient, CGH array revealed a microdeletion carrying the CREBBP gene. Through this work, we emphasize the importance of clinical expertise in the diagnosis, management and genetic counseling in Rubinstein Taybi syndrome. Keywords: Rubinstein Taybi syndrome; CREBBP gene; mutation; Moroccan.
Published: 2021
Full Text: View/download PDF

30. Correction: A MT-TL1 variant identified by whole exome sequencing in an individual with intellectual disability, epilepsy, and spastic tetraparesis (European Journal of Human Genetics, (2021), 29, 9, (1359-1368), 10.1038/s41431-021-00900-2)

Author: de Boer, Elke, Ockeloen, Charlotte W., Matalonga, Leslie, Horvath, Rita, Cohen, Enzo, Nelson, Isabelle, Rodenburg, Richard J., Coenen, Marieke J. H., Janssen, Mirian, Henssen, Dylan, Gilissen, Christian, Steyaert, Wouter, Paramonov, Ida, Trimouille, Aurelien, Kleefstra, Tjitske, Verloes, Alain, Vissers, Lisenka E. L. M., Radboud University Medical Center [Nijmegen], Institute of Environmental Science and Technology [Barcelona] (ICTA), Universitat Autònoma de Barcelona (UAB), University of Cambridge [UK] (CAM), Centre de recherche en Myologie – U974 SU-INSERM, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], Hôpital Robert Debré, Maladies neurodéveloppementales et neurovasculaires (NeuroDiderot (UMR_S_1141 / U1141)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Enzo Cohen, Isabel Cuesta, Daniel Danis, Anne-Sophie Denommé-Pichon, Yannis Duffourd, Christian Gilissen, Mridul Johari, Steven Laurie, Shuang Li, Leslie Matalonga, Isabelle Nelson, Sophia Peters, Ida Paramonov, Sivakumar Prasanth, Peter Robinson, Karolis Sablauskas, Marco Savarese, Wouter Steyaert, Ana Töpf, Joeri K van der Velde, Antonio Vitobello, Siddharth Banka, Elisa Benetti, Giorgio Casari, Andrea Ciolfi, Jill Clayton-Smith, Bruno Dallapiccola, Elke de Boer, Laurence Faivre, Tobias B Haack, Anna Hammarsjö, Marketa Havlovicova, Alexander Hoischen, Anne Hugon, Adam Jackson, Tjitske Kleefstra, Anna Lindstrand, Estrella López-Martín, Milan Macek Jr, Vicenzo Nigro, Ann Nordgren, Maria Pettersson, Michele Pinelli, Simone Pizzi, Manuel Posada, Francesca Clementina Radio, Alessandra Renieri, Caroline Rooryck, Lukas Ryba, Martin Schwarz, Marco Tartaglia, Christel Thauvin, Annalaura Torella, Alain Verloes, Lisenka Vissers, Klea Vyshka, Birte Zurek, Admin, Oskar, and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP)
Subjects: [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, ComputingMilieux_MISCELLANEOUS, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; No abstract available
Published: 2021
Full Text: View/download PDF

31. Rubinstein-Taybi Syndrome: A Model of Epigenetic Disorder

Author: Didier Lacombe, Frédérique Magdinier, Patricia Fergelot, Julien Van Gils, Marseille medical genetics - Centre de génétique médicale de Marseille (MMG), Aix Marseille Université (AMU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, Genotype, chromatinopathies, phenotype, Developmental Disabilities, Limb Deformities, Congenital, Context (language use), Review, QH426-470, Biology, CREBBP, Chromatin remodeling, Epigenesis, Genetic, 03 medical and health sciences, 0302 clinical medicine, Intellectual disability, Genetics, medicine, Humans, Genetic Predisposition to Disease, Epigenetics, EP300, Genetic Association Studies, Rubinstein-Taybi syndrome, Genetics (clinical), acetylation, [SDV.GEN]Life Sciences [q-bio]/Genetics, epigenetics, Rubinstein–Taybi syndrome, Extremities, medicine.disease, Developmental disorder, 030104 developmental biology, Mutation, chromatin, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: The Rubinstein-Taybi syndrome (RSTS) is a rare congenital developmental disorder characterized by a typical facial dysmorphism, distal limb abnormalities, intellectual disability, and many additional phenotypical features. It occurs at between 1/100,000 and 1/125,000 births. Two genes are currently known to cause RSTS, CREBBP and EP300, mutated in around 55% and 8% of clinically diagnosed cases, respectively. To date, 500 pathogenic variants have been reported for the CREBBP gene and 118 for EP300. These two genes encode paralogs acting as lysine acetyltransferase involved in transcriptional regulation and chromatin remodeling with a key role in neuronal plasticity and cognition. Because of the clinical heterogeneity of this syndrome ranging from the typical clinical diagnosis to features overlapping with other Mendelian disorders of the epigenetic machinery, phenotype/genotype correlations remain difficult to establish. In this context, the deciphering of the patho-physiological process underlying these diseases and the definition of a specific episignature will likely improve the diagnostic efficiency but also open novel therapeutic perspectives. This review summarizes the current clinical and molecular knowledge and highlights the epigenetic regulation of RSTS as a model of chromatinopathy.
Published: 2021
Full Text: View/download PDF

32. Severe phenotype in patients with large deletions of NF1

Author: Laurence, Pacot, Dominique, Vidaud, Audrey, Sabbagh, Ingrid, Laurendeau, Audrey, Briand-Suleau, Audrey, Coustier, Théodora, Maillard, Cécile, Barbance, Fanny, Morice-Picard, Sabine, Sigaudy, Olga O, Glazunova, Lena, Damaj, Valérie, Layet, Chloé, Quelin, Brigitte, Gilbert-Dussardier, Frédérique, Audic, Hélène, Dollfus, Anne-Marie, Guerrot, James, Lespinasse, Sophie, Julia, Marie-Christine, Vantyghem, Magali, Drouard, Marilyn, Lackmy, Bruno, Leheup, Yves, Alembik, Alexia, Lemaire, Patrick, Nitschké, Florence, Petit, Anne, Dieux Coeslier, Eugénie, Mutez, Alain, Taieb, Mélanie, Fradin, Yline, Capri, Hala, Nasser, Lyse, Ruaud, Benjamin, Dauriat, Sylvie, Bourthoumieu, David, Geneviève, Séverine, Audebert-Bellanger, Mathilde, Nizon, Radka, Stoeva, Geoffroy, Hickman, Gaël, Nicolas, Juliette, Mazereeuw-Hautier, Arnaud, Jannic, Salah, Ferkal, Béatrice, Parfait, Michel, Vidaud, Members Of The Nf France Network, Pierre, Wolkenstein, Eric, Pasmant, Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Institut Cochin (IC UM3 (UMR 8104 / U1016)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), Cancer Research and Personalized Medicine - CARPEM [Paris], Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Descartes - Paris 5 (UPD5)-Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-CHU Necker - Enfants Malades [AP-HP], GHU AP-HP Centre Université de Paris, Mère et enfant en milieu tropical : pathogènes, système de santé et transition épidémiologique (MERIT - UMR_D 216), Institut de Recherche pour le Développement (IRD)-Université de Paris (UP), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital de la Timone [CHU - APHM] (TIMONE), CHU Pontchaillou [Rennes], Groupe Hospitalier du Havre, Centre de référence Maladies Rares CLAD-Ouest [Rennes], Hôpital Sud [CHU Rennes], Centre hospitalier universitaire de Poitiers (CHU Poitiers), Laboratoire de Génétique Médicale (LGM), Université de Strasbourg (UNISTRA)-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Rouen, Normandie Université (NU), Centre Hospitalier Métropole Savoie [Chambéry], CHU Toulouse [Toulouse], Hôpital Purpan [Toulouse], Recherche translationnelle sur le diabète - U 1190 (RTD), Institut Pasteur de Lille, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Université de Lille, CHU Pointe-à-Pitre/Abymes [Guadeloupe], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Hôpital de Hautepierre [Strasbourg], Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), CHU Lille, Lille Neurosciences & Cognition - U 1172 (LilNCog (ex-JPARC)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Lille-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), CHU Bordeaux [Bordeaux], Hôpital Robert Debré, Maladies neurodéveloppementales et neurovasculaires (NeuroDiderot (UMR_S_1141 / U1141)), CHU Limoges, Hôpital Arnaud de Villeneuve [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Hôpital Morvan - CHRU de Brest (CHU - BREST ), Centre hospitalier universitaire de Nantes (CHU Nantes), Centre Hospitalier Le Mans (CH Le Mans), Hopital Saint-Louis [AP-HP] (AP-HP), Université de Rouen Normandie (UNIROUEN), Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Hôpital Henri Mondor, Centre d'Investigation Clinique Henri Mondor (CIC Henri Mondor), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Henri Mondor-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), This work was supported by grants by Association Neurofibromatoses et Recklinghausen Fondation CAP NF, Ligue Française Contre les Neurofibromatoses, INSERM (Nf1GeneModif project), and Ministère de l’Enseignement Supérieur et de la Recherche., Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Hôpital Européen Georges Pompidou [APHP] (HEGP), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpitaux Universitaires Paris Ouest - Hôpitaux Universitaires Île de France Ouest (HUPO)-Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Necker - Enfants Malades [AP-HP], Mère et enfant en milieu tropical : pathogènes, système de santé et transition épidémiologique (MERIT - UMR_D 261), Institut de Recherche pour le Développement (IRD)-Université Paris Cité (UPCité), Centre Hospitalier Universitaire de Toulouse (CHU Toulouse), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité), Lille Neurosciences & Cognition - U 1172 (LilNCog), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), and Admin, Oskar
Subjects: Genotype-phenotype correlation, congenital, hereditary, and neonatal diseases and abnormalities, cardiovascular abnormalities, [SDV.NEU.NB]Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, dysmorphism, [SDV.CAN]Life Sciences [q-bio]/Cancer, [SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics, skeletal abnormalities, neurofibromatosis type 1, Article, [SDV.CAN] Life Sciences [q-bio]/Cancer, MPNSTs, learning disabilities, Neurofi-bromas, neoplasms, [SDV.NEU.NB] Life Sciences [q-bio]/Neurons and Cognition [q-bio.NC]/Neurobiology, NF1 deletion, genotype–phenotype correlation, eye diseases, nervous system diseases, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, NF1, neurofibromas, NFs, malignant peripheral nerve sheath tumors, tumor predisposition
Abstract: Simple Summary Neurofibromatosis type 1 (NF1) is a genetic disorder caused by pathogenic variants in the NF1 tumor suppressor gene. In 5–10% of NF1 patients, a large heterozygous deletion of the whole NF1 gene is identified, leading to the commonly called “NF1 microdeletion syndrome”. NF1-deleted patients were previously reported to develop a particularly severe form of the disease with frequent cognitive impairment and an increased risk of benign and malignant tumors. Here, we performed a comprehensive clinical assessment of the largest NF1-deleted cohort to date, including 126 NF1 patients with a deletion of the NF1 gene. This work provides new insights into the specific phenotype associated with NF1 deletions and may contribute to improve the follow-up care of NF1 patients. Abstract Complete deletion of the NF1 gene is identified in 5–10% of patients with neurofibromatosis type 1 (NF1). Several studies have previously described particularly severe forms of the disease in NF1 patients with deletion of the NF1 locus, but comprehensive descriptions of large cohorts are still missing to fully characterize this contiguous gene syndrome. NF1-deleted patients were enrolled and phenotypically characterized with a standardized questionnaire between 2005 and 2020 from a large French NF1 cohort. Statistical analyses for main NF1-associated symptoms were performed versus an NF1 reference population. A deletion of the NF1 gene was detected in 4% (139/3479) of molecularly confirmed NF1 index cases. The median age of the group at clinical investigations was 21 years old. A comprehensive clinical assessment showed that 93% (116/126) of NF1-deleted patients fulfilled the NIH criteria for NF1. More than half had café-au-lait spots, skinfold freckling, Lisch nodules, neurofibromas, neurological abnormalities, and cognitive impairment or learning disabilities. Comparison with previously described “classic” NF1 cohorts showed a significantly higher proportion of symptomatic spinal neurofibromas, dysmorphism, learning disabilities, malignancies, and skeletal and cardiovascular abnormalities in the NF1-deleted group. We described the largest NF1-deleted cohort to date and clarified the more severe phenotype observed in these patients.
Published: 2021
Full Text: View/download PDF

33. CHEDDA syndrome is an underrecognized neurodevelopmental disorder with a highly restricted ATN1 mutation spectrum

Author: Fowzan S. Alkuraya, Eric J. Mallack, Ingrid M. Wentzensen, John Karl de Dios, Subhadra Ramanathan, Robin D. Clark, Alpa Sidhu, Mais Hashem, Valérie Cormier-Daire, Maya Chopra, Danita Velasco, Shenela Lakhani, Lois J. Starr, Emily Singh, Didier Lacombe, Karin Panzer, Chloe Whitton, Elizabeth E. Palmer, Vincent Michaud, Lance H. Rodan, Christoffer Nellåker, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Male, Pediatrics, medicine.medical_specialty, Developmental delay, Intellectual disability, Nerve Tissue Proteins, 03 medical and health sciences, Epilepsy, Exon, 0302 clinical medicine, Atrophy, Neurodevelopmental disorder, Genetics, Medicine, Missense mutation, Humans, Genetic Predisposition to Disease, Global developmental delay, Genetics (clinical), Genetic Association Studies, 030304 developmental biology, Arthrogryposis, 0303 health sciences, business.industry, Facies, Genomics, Syndrome, medicine.disease, Rare diseases, 3. Good health, Phenotype, Neurodevelopmental Disorders, Child, Preschool, Mutation, Female, medicine.symptom, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, 030217 neurology & neurosurgery
Abstract: We describe the clinical features of nine unrelated individuals with rare de novo missense or in-frame deletions/duplications within the « HX motif » of exon 7 of ATN1. We previously proposed that individuals with such variants should be considered as being affected by the syndromic condition of congenital hypotonia, epilepsy, developmental delay, and digital anomalies (CHEDDA), distinct from dentatorubral-pallidoluysian atrophy (DRPLA) secondary to expansion variants in exon 5 of ATN1. We confirm that the universal phenotypic features of CHEDDA are distinctive facial features and global developmental delay. Infantile hypotonia and minor hand and feet differences are common and can present as arthrogryposis. Common comorbidities include severe feeding difficulties, often requiring gastrostomy support, as well as visual and hearing impairments. Epilepsy and congenital malformations of the brain, heart, and genitourinary systems are frequent but not universal. Our study confirms the clinical entity of CHEDDA secondary to a mutational signature restricted to exon 7 of ATN1. We propose a clinical schedule for assessment upon diagnosis, surveillance, and early intervention including the potential of neuroimaging for prognostication.
Published: 2021
Full Text: View/download PDF

34. Pain evaluation after day-surgery using a mobile phone application

Author: Nicolas Pages, Jean-Claude Pauchard, Maxim Roy, Florian Robin, Isabelle Quintana, Karine Nouette-Gaulain, Alice Quinart, Jérome Carlier, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: medicine.medical_specialty, Postoperative pain, Critical Care and Intensive Care Medicine, Cohort Studies, 03 medical and health sciences, 0302 clinical medicine, 030202 anesthesiology, Postoperative outcome assessment, Medicine, Humans, Adverse effect, Retrospective Studies, Pain, Postoperative, business.industry, Incidence (epidemiology), Retrospective cohort study, General Medicine, mobile application, Missing data, Surgery, Anesthesiology and Pain Medicine, Ambulatory Surgical Procedures, Ambulatory, Observational study, Day surgery, business, 030217 neurology & neurosurgery, Cell Phone, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Cohort study
Abstract: Introduction Few studies assess postoperative outcomes after discharge in the ambulatory setting. The aim of this study was to investigate postoperative pain and adverse effects at 24 h and at 7 days after day surgery using an e-health follow-up smartphone-based application named SATELIA®. Materials and methods This retrospective, observational and monocentric cohort study was conducted at the University Hospital of Bordeaux. All eligible patients for SATELIA® follow-up between May 2018 and June 2019 were screened for the analysis. Data were extracted from two databases. Those with a missing primary outcome were excluded from the analysis. The main outcome was the worst pain score on POD 1, self-reported via SATELIA®. The secondary outcomes were the incidence of adverse effects on POD1, as well as the worst pain score and adverse effects on POD7. Quantitative data were reported by the median (IQR) and categorical data were presented as absolute numbers (%). Results A total of 2283 patients were screened for analysis, from which 592 were excluded due to missing data for the main outcome; 1691 patients were thus finally included. The median worst pain score at POD 1 was 3.0 (1.0–5.0); 35.5% (n = 601/1691) and 29.1% (n = 492/1691) of the patients reported moderate-to-severe pain at POD1 and POD7, respectively. Conclusion This retrospective study shows that 35.5% of patients experience moderate-to-severe pain after day surgery. Even if SATELIA® should be further developed and evaluated, it also demonstrates the interest of using phone based software to follow patients after discharge and ensure a better personalised management.
Published: 2021
Full Text: View/download PDF

35. Management of albinism: French guidelines for diagnosis and care

Author: Benoit Arveiler, Alain Taïeb, E Moreno-Artero, Stéphanie Leclerc-Mercier, Smail Hadj-Rabia, H. Dufresne, I Drumare-Bouvet, B. Jouanne, Dominique Bremond-Gignac, Fanny Morice-Picard, J Kaplan, C Duncombe-Poulet, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, medicine.medical_specialty, genetic structures, Albinism, Vision Disorders, Dermatology, Nystagmus, Nystagmus, Pathologic, Melanin, 03 medical and health sciences, Therapeutic approach, 0302 clinical medicine, medicine, Humans, Hypopigmentation, Melanins, business.industry, Genetic disorder, medicine.disease, Hypoplasia, 3. Good health, 030104 developmental biology, Infectious Diseases, Albinism, Oculocutaneous, Practice Guidelines as Topic, 030221 ophthalmology & optometry, sense organs, medicine.symptom, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Systematic Reviews as Topic
Abstract: Albinism is a worldwide genetic disorder caused by mutations in at least 20 genes, identified to date, that affect melanin production or transport in the skin, hair and eyes. Patients present with variable degrees of diffuse muco-cutaneous and adnexal hypopigmentation, as well as ocular features including nystagmus, misrouting of optic nerves and foveal hypoplasia. Less often, albinism is associated with blood, immunological, pulmonary, digestive and/or neurological anomalies. Clinical and molecular characterizations are essential in preventing potential complications. Disease-causing mutations remain unknown for about 25% of patients with albinism. These guidelines have been developed for the diagnosis and management of syndromic and non-syndromic forms of albinism, based on a systematic review of the scientific literature. These guidelines comprise clinical and molecular characterization, diagnosis, therapeutic approach and management.
Published: 2021
Full Text: View/download PDF

36. Adult-onset diagnosis of urea cycle disorders: Results of a French cohort of 71 patients

Author: Christian Lavigne, Lena Damaj, Esther Noel, François Maillot, Sybill Charriere, Adrien Bigot, Vincent Rigalleau, Claire Douillard, Fanny Mochel, Elsa Kaphan, Ségolène Toquet, Amélie Servettaz, Samir Mesli, Gérard Besson, Roselyne Garnotel, Caroline Moreau, Agathe Roubertie, Sylvie Odent, Isabelle Redonnet-Vernhet, Jean Baptiste Arnoux, Marta Spodenkiewicz, Aude Servais, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Bordeaux population health (BPH), and Université de Bordeaux (UB)-Institut de Santé Publique, d'Épidémiologie et de Développement (ISPED)-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Adult, Male, Ornithine, Pediatrics, medicine.medical_specialty, Adolescent, Argininosuccinic Aciduria, Context (language use), Inherited metabolic diseases, Urea cycle disorders, 03 medical and health sciences, Young Adult, Sex Factors, Intensive care, Genetics, Medicine, Adults, Humans, Hyperammonemia, Decompensation, Family history, Age of Onset, Urea Cycle Disorders, Inborn, Genetics (clinical), 030304 developmental biology, Aged, Retrospective Studies, Coma, Aged, 80 and over, 0303 health sciences, biology, business.industry, 030305 genetics & heredity, Middle Aged, medicine.disease, 3. Good health, Ornithine Carbamoyltransferase Deficiency Disease, Citrin, Argininosuccinic aciduria, Late-onset diagnosis, Cohort, biology.protein, [SDV.SPEE]Life Sciences [q-bio]/Santé publique et épidémiologie, Female, France, medicine.symptom, business
Abstract: BACKGROUND: Urea cycle disorders (UCD) are rare diseases that usually affect neonates or young children. During decompensations, hyperammonemia is neurotoxic, leading to severe symptoms and even coma and death if not treated rapidly. AIMS: Description of a cohort of patients with adult onset of UCDs. METHODS: Multicentric, retrospective and descriptive study of French adult patients with a diagnosis after 16 years of age of UCDs due to a deficiency in one of the 6 enzymes (arginase, ASL, ASS, CPS1, NAGS, OTC) or the two transporters (ORNT1 or citrin). RESULTS: Seventy-one patients were included (68% female, 32% male). The diagnosis was made in the context of (i) a metabolic decompensation (42%), (ii) family history (55%), or (iii) chronic symptoms (3%). The median age at diagnosis was 33 years (range 16-86). Eighty-nine percent of patients were diagnosed with OTC deficiency, 7% CPS1 deficiency, 3% HHH syndrome and 1% argininosuccinic aciduria. For those diagnosed during decompensations (including 23 OTC cases, mostly female), 89% required an admission in intensive care units. Seven deaths were attributed to UCD - 6 decompensations and 1 epilepsy secondary to inaugural decompensation. CONCLUSION: This is the largest cohort of UCDs diagnosed in adulthood, which confirms the triad of neurological, gastrointestinal and psychiatric symptoms during hyperammonemic decompensations. We stress that females with OTC deficiency can be symptomatic. With 10% of deaths in this cohort, UCDs in adults remain a life-threatening condition. Physicians working in adult care must be aware of late-onset presentations given the implications for patients and their families. This article is protected by copyright. All rights reserved.
Published: 2021
Full Text: View/download PDF

37. Evidence of mosaicism in SPAST variant carriers in four French families

Author: William Camu, Guillaume Banneau, Samia Ait Said, Eric LeGuern, Christel Depienne, Bophara Kol, Caroline Rooryck, Clarisse Scherer-Gagou, Giovanni Stevanin, Laurène Tissier, Perrine Pennamen, Bénédicte Héron, Cyril Goizet, Marine Guillaud-Bataille, Chloé Angelini, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Groupe hospitalier Pellegrin, Service de Génétique médicale [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Hôpital Gui de Chauliac, Université Montpellier 1 (UM1)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Unité Fonctionnelle de Génétique Clinique [CHU Pitié Salpétrière], Institut du Cerveau et de la Moëlle Epinière = Brain and Spine Institute (ICM), Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), University of Duisbourg-Essen, Service de Neuropédiatrie [CHU Trousseau], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL), and Institut Fédératif de Biologie (IFB) - Hôpital Purpan
Subjects: Male, MESH: Alleles, Child, Comparative Genomic Hybridization, Female, France, Gene Frequency, Heterozygote, High-Throughput Nucleotide Sequencing, Spastin, Medizin, Brief Communication, Spastic Paraplegias, 03 medical and health sciences, Genetic etiology, Genetics, Spastic, Medicine, Humans, Diagnostic laboratory, Genetics (clinical), Alleles, 0303 health sciences, business.industry, Mosaicism, Spastic Paraplegia, Hereditary, 030305 genetics & heredity, Homozygote, Middle Aged, Penetrance, 3. Good health, Pedigree, nervous system diseases, Phenotype, Somatic mosaicism, Mutation, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: International audience; Hereditary spastic paraplegias (HSP) are heterogeneous disorders, with more than 70 causative genes. Variants in SPAST are the most frequent genetic etiology and are responsible for spastic paraplegia type 4 (SPG4). Age at onset can vary, even between patients from the same family, and incomplete penetrance is described. Somatic mosaicism is extremely rare with only three patients reported in the literature. We report here SPAST mosaic variants in four unrelated patients. We confirm that mosaicism in SPAST is a very rare event with only four identified cases on more than 300 patients with a SPAST variant previously described by our clinical diagnostic laboratory.
Published: 2021
Full Text: View/download PDF

38. Succinate Anaplerosis Has an Onco-Driving Potential in Prostate Cancer Cells

Author: Saharnaz Sarlak, Claude Lalou, Rodrigue Rossignol, Andras T. Meszaros, Helmut Klocker, Christian Frezza, Juan Alberto Pérez-Valencia, Ana Carolina B Sant'Anna-Silva, Erich Gnaiger, Laura Tronci, Efterpi Nikitopoulou, Marco Sciacovelli, Innsbruck Medical University [Austria] (IMU), University of Cambridge [UK] (CAM), Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Perez-Valencia, Juan A. [0000-0002-8282-1763], Tronci, Laura [0000-0002-1217-4046], Klocker, Helmut [0000-0001-7732-9443], Apollo - University of Cambridge Repository, Perez-Valencia, Juan A [0000-0002-8282-1763], Admin, Oskar, and Innsbruck Medical University = Medizinische Universität Innsbruck (IMU)
Subjects: 0301 basic medicine, Cancer Research, Cell signaling, cancer metabolism, [SDV.CAN]Life Sciences [q-bio]/Cancer, Oxidative phosphorylation, [SDV.BC.BC]Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], Mitochondrion, [SDV.MHEP.UN]Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, lcsh:RC254-282, Article, 03 medical and health sciences, chemistry.chemical_compound, Prostate cancer, 0302 clinical medicine, [SDV.CAN] Life Sciences [q-bio]/Cancer, Biosynthesis, Downregulation and upregulation, [SDV.BC.BC] Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], medicine, Extracellular, medicine.disease, prostate cancer, succinate, lcsh:Neoplasms. Tumors. Oncology. Including cancer and carcinogens, [SDV.MHEP.UN] Life Sciences [q-bio]/Human health and pathology/Urology and Nephrology, Citric acid cycle, mitochondria, anaplerosis, 030104 developmental biology, Oncology, chemistry, 030220 oncology & carcinogenesis, Cancer research
Abstract: Simple Summary Depending on the availability of nutrients and increased metabolic demands, tumor cells rearrange their metabolism to survive and, ultimately, proliferate. Here, the authors investigated the effect of succinate, a metabolite of the mitochondrial citric acid cycle, on malignant and non-malignant prostate cells. They analyzed uptake through membrane transporters and intracellular accumulation, which subsequently fuels metabolism and enhances oncogenic properties of the tumor cells. The findings shed light to the metabolic adaptations that prostate tumor cells undergo, providing a better understanding of metabolic rewiring and strategies for therapeutic intervention. Abstract Tumor cells display metabolic alterations when compared to non-transformed cells. These characteristics are crucial for tumor development, maintenance and survival providing energy supplies and molecular precursors. Anaplerosis is the property of replenishing the TCA cycle, the hub of carbon metabolism, participating in the biosynthesis of precursors for building blocks or signaling molecules. In advanced prostate cancer, an upshift of succinate-driven oxidative phosphorylation via mitochondrial Complex II was reported. Here, using untargeted metabolomics, we found succinate accumulation mainly in malignant cells and an anaplerotic effect contributing to biosynthesis, amino acid, and carbon metabolism. Succinate also stimulated oxygen consumption. Malignant prostate cells displayed higher mitochondrial affinity for succinate when compared to non-malignant prostate cells and the succinate-driven accumulation of metabolites induced expression of mitochondrial complex subunits and their activities. Moreover, extracellular succinate stimulated migration, invasion, and colony formation. Several enzymes linked to accumulated metabolites in the malignant cells were found upregulated in tumor tissue datasets, particularly NME1 and SHMT2 mRNA expression. High expression of the two genes was associated with shorter disease-free survival in prostate cancer cohorts. Moreover, in-vitro expression of both genes was enhanced in prostate cancer cells upon succinate stimulation. In conclusion, the data indicate that uptake of succinate from the tumor environment has an anaplerotic effect that enhances the malignant potential of prostate cancer cells.
Published: 2021
Full Text: View/download PDF

39. SOD1-related ALS with anticipation in a large family from Martinique

Author: Rémi Bellance, Cyril Goizet, Thomas Barnetche, Séverine Jeannin, Cécile Cazeneuve, Pascale Olive, Fabienne Clot, Sophie Duclos, Juliette Smith-Ravin, Anna-Gaelle Giguet-Valard, Oriane Allard-Saint-Albin, Pittion-Vouyovitch Sophie, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Agence Nationale de la Recherche, Région Hauts-de-France, ANR-10-LABX-0046,EGID,EGID Diabetes Pole(2010), and ANR-10-EQPX-0007,LIGAN PM,Plate forme Lilloise de séquençage du génome humain pour une médecine personnalisée(2010)
Subjects: SOD1, Next Generation Sequencing, Neurological disorder, Degeneration (medical), Anticipation, 03 medical and health sciences, Superoxide Dismutase-1, 0302 clinical medicine, CoDE-Seq method, medicine, Humans, Martinique, Amyotrophic lateral sclerosis, Genetic Amyotrophic Lateral Sclerosis, business.industry, Amyotrophic Lateral Sclerosis, medicine.disease, 3. Good health, DNA-Binding Proteins, nervous system, Neurology, Mutation, Anticipation (genetics), Neurology (clinical), business, Neuroscience, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Amyotrophic Lateral Sclerosis (ALS) is a rare neurological disorder that causes degeneration of upper and lower motor neurons and their axons. ALS is mostly sporadic, but there are familial forms. In more than half of the familial forms, a pathogenic variant is found in one of the following genes: C9ORF72, SOD1, TDP-43, FUS, and VCP. SOD1 is the 2nd most common gene involved in genetic forms of ALS. Genotype-phenotype relationships are occasionally established in genetic forms of ALS associated with SOD1 mutations pathogenic variants. The c.281G > T (p.[G93V]) variant in SOD1 is associated with a rarely described and unexplained anticipation phenomenon. We report a large family from Martinique in whom ALS is associated with a c.281G > T (p.[G93V]) pathogenic variant in SOD1 and a statistically suggested anticipation. A whole-exome study and detection of CNVs (CoDESeq) from 3 affected members of this family revealed the presence of variants of uncertain signification (VUS) in other ALS genes. VUS in DCTN1 and NEFH were present in patients of the 2nd generation, and CNVs involving UBQLN2 and C21orf2 were found in the youngest case of the family.
Published: 2021
Full Text: View/download PDF

40. Correspondence on 'De novo variants in MED12 cause X-linked syndromic neurodevelopmental disorders in 18 females' by Polla et al

Author: Aurélien Trimouille, Jeanne Amiel, Florence Riccardi, Catherine Badens, Vincent Michaud, Margot Grisval, Alexandre Astier, Svetlana Gorokhova, Sabine Sigaudy, Arnaud Maillard, Laurence Faivre, Christopher T. Gordon, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Genetics, 0303 health sciences, 03 medical and health sciences, 030305 genetics & heredity, MEDLINE, Biology, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Genetics (clinical), 030304 developmental biology, MED12
Published: 2021
Full Text: View/download PDF

41. A hexokinase isoenzyme switch in human liver cancer cells promotes lipogenesis and enhances innate immunity

Author: Perrin-Cocon, Laure, Vidalain, Pierre-Olivier, Jacquemin, Clémence, Aublin-Gex, Anne, Olmstead, Keedrian, Panthu, Baptiste, Rautureau, Gilles Jeans Philippe, André, Patrice, Nyczka, Piotr, Hütt, Marc-Thorsten, Amoedo, Nivea, Rossignol, Rodrigue, Filipp, Fabian Volker, Lotteau, Vincent, Diaz, Olivier, Centre International de Recherche en Infectiologie - UMR (CIRI), Institut National de la Santé et de la Recherche Médicale (INSERM)-École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Centre National de la Recherche Scientifique (CNRS), Helmholtz-Zentrum München (HZM), Cardiovasculaire, métabolisme, diabétologie et nutrition (CarMeN), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Hospices Civils de Lyon (HCL)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Centre de RMN à très hauts champs de Lyon (CRMN), École normale supérieure - Lyon (ENS Lyon)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Jacobs University [Bremen], Centre Génomique Fonctionnelle Bordeaux [Bordeaux] (CGFB), Institut Polytechnique de Bordeaux-Université de Bordeaux Ségalen [Bordeaux 2], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Technische Universität München [München] (TUM), Fondation pour la Recherche Médicale, Helmholtz Zentrum München Institute of Computational Biology Neuherberg, Germany, Cellomet [CHU Pellegrin, Bordeaux], CHU de Bordeaux Pellegrin [Bordeaux], Université de Lyon-Université de Lyon-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Helmholtz Zentrum München = German Research Center for Environmental Health, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM), Admin, Oskar, Vidalain, Pierre-Olivier, Centre International de Recherche en Infectiologie (CIRI), École normale supérieure de Lyon (ENS de Lyon)-Université Claude Bernard Lyon 1 (UCBL), and Université de Lyon-Université de Lyon-Université Jean Monnet - Saint-Étienne (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)
Subjects: QH301-705.5, [SDV]Life Sciences [q-bio], [SDV.CAN]Life Sciences [q-bio]/Cancer, [SDV.BC.BC]Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], [SDV.IMM.II]Life Sciences [q-bio]/Immunology/Innate immunity, Article, Gene Expression Regulation, Enzymologic, [SDV.CAN] Life Sciences [q-bio]/Cancer, Cell Line, Tumor, Hexokinase, [SDV.BBM.GTP]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Glucokinase, [SDV.BC.BC] Life Sciences [q-bio]/Cellular Biology/Subcellular Processes [q-bio.SC], Humans, Biology (General), [SDV.IMM.II] Life Sciences [q-bio]/Immunology/Innate immunity, Lipogenesis, Liver Neoplasms, [SDV.MHEP.HEG]Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, Cancer metabolism, [SDV.MHEP.HEG] Life Sciences [q-bio]/Human health and pathology/Hépatology and Gastroenterology, Immunity, Innate, digestive system diseases, [SDV] Life Sciences [q-bio], Gene Expression Regulation, Neoplastic, Isoenzymes, [SDV.BBM.GTP] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Genomics [q-bio.GN], Tumour immunology, Energy Metabolism, Signal Transduction
Abstract: During the cancerous transformation of normal hepatocytes into hepatocellular carcinoma (HCC), the enzyme catalyzing the first rate-limiting step of glycolysis, namely the glucokinase (GCK), is replaced by the higher affinity isoenzyme, hexokinase 2 (HK2). Here, we show that in HCC tumors the highest expression level of HK2 is inversely correlated to GCK expression, and is associated to poor prognosis for patient survival. To further explore functional consequences of the GCK-to-HK2 isoenzyme switch occurring during carcinogenesis, HK2 was knocked-out in the HCC cell line Huh7 and replaced by GCK, to generate the Huh7-GCK+/HK2− cell line. HK2 knockdown and GCK expression rewired central carbon metabolism, stimulated mitochondrial respiration and restored essential metabolic functions of normal hepatocytes such as lipogenesis, VLDL secretion, glycogen storage. It also reactivated innate immune responses and sensitivity to natural killer cells, showing that consequences of the HK switch extend beyond metabolic reprogramming., Many cancers fuel their rapid growth by replacing glucokinase with its higher affinity isoenzyme, hexokinase 2 (HK2), making HK2 an attractive drug target. In this study, Perrin-Cocon and Vidalain et al. use CRISPR/Cas-9 gene editing to reverse this enzymatic switch in human liver cancer cells, and find this restores innate immune function as well as reversing cancer-associated metabolic reprogramming.
Published: 2021
Full Text: View/download PDF

42. Endocrine and Growth Abnormalities in 4H Leukodystrophy Caused by Variants in POLR3A, POLR3B, and POLR1C

Author: Petter Strømme, Ferda Ozkinay, Heike Philippi, Pontus Wasling, Sebastien Moutton, Dagmar Timmann, Maria Vázquez-López, Pedro S Pinto, Annette Bley, A. Blaschek, Gabriel Á. Martos-Moreno, A. Micheil Innes, Alan Hill, Argirios Dinopoulos, Fiona Haslam McKenzie, Janice M. Fletcher, Barbara Plecko, Hanna Mierzewska, Matthis Synofzik, Cathy A. Stevens, Raphael Schiffmann, Janina Gburek-Augustat, Miriam Nickel, Constantin Polychronakos, Kether Guerrero, Susan M. Kirwin, Icíar Cimas, Inga Harting, Bwee Tien Poll-The, Vera Popovic, Coriene E. Catsman-Berrevoets, Simona Orcesi, Nicole I. Wolf, Laura Roos, Grace M. Hobson, Norberto Rodriguez Espinosa, Gert Wiegand, Bernard Brais, Julia Rankin, Marjo S. van der Knaap, Cyril Goizet, Michelle Demos, Sandra Pekic, Ingrid Tejera-Martin, Adeline Vanderver, Stefanie Perrier, Brent L. Fogel, Eriskay Liston, Meriel McEntagart, Ferdy K. Cayami, Bart P.C. van de Warrenburg, Anne Ronan, Paolo Gasparini, Bernard Corenblum, Joost Rotteveel, Mercedes Pineda Marfa, Roberta La Piana, Richard Webster, Eugen Boltshauser, Amytice Mirchi, Dietz Rating, Klara Brozova, Ingeborg Krägeloh-Mann, Marcelo Andrés Kauffman, Nesrin Senbil, Gerhard Kluger, Brenda Banwell, Flavio Faletra, Michel Sylvain, Urania Kotzaeridou, Tahir Atik, Raymond Fernandez, Stephan Saikali, William S. Benko, Fernando I Monton, Dorota Gieruszczak-Białek, Dolores Gonzalez Moron, Charles Marques Lourenço, Amy Pizzino, Ana Potic, Elsa Rossignol, Ton J. de Grauw, William T. Gibson, Luan T. Tran, Davide Tonduti, Rosalina M. L. van Spaendonk, Rocío Sánchez-Carpintero, Raymond P J Murphy, Guillaume Sébire, Daniela Pohl, Joshua L. Bonkowsky, Christopher Clough, Sandya Tirupathi, Maria Eugenia Garcia Garcia, Christoph Hertzberg, Serge Melançon, Anjum Misbahuddin, Félixe Pelletier, Evangeline Wassmer, Gail Dolan, Marie-France Rioux, Geneviève Bernard, Sunita Venkateswaran, Steffi Patzer, Aline Hamati, Helio Pedro, Hüseyin Onay, Drago Bratkovic, Petra Kolditz, Daniel Tibussek, Sakkubai Naidu, Nicole Ulrick, Emmanouil Rampakakis, William McClintock, Anna Schossig, Mohnish Suri, Grace Yoon, László Sztriha, John R. Østergaard, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Canadian Institutes of Health Research, Fonds de recherche du Québec, Fonds de Recherche du Québec - Santé, Neurology, Functional Genomics, Pelletier, F., Perrier, S., Cayami, F. K., Mirchi, A., Saikali, S., Tran, L. T., Ulrick, N., Guerrero, K., Rampakakis, E., van Spaendonk, R. M. L., Naidu, S., Pohl, D., Gibson, W. T., Demos, M., Goizet, C., Tejera-Martin, I., Potic, A., Fogel, B. L., Brais, B., Sylvain, M., Sebire, G., Lourenco, C. M., Bonkowsky, J. L., Catsman-Berrevoets, C., Pinto, P. S., Tirupathi, S., Stromme, P., de Grauw, T., Gieruszczak-Bialek, D., Krageloh-Mann, I., Mierzewska, H., Philippi, H., Rankin, J., Atik, T., Banwell, B., Benko, W. S., Blaschek, A., Bley, A., Boltshauser, E., Bratkovic, D., Brozova, K., Cimas, I., Clough, C., Corenblum, B., Dinopoulos, A., Dolan, G., Faletra, F., Fernandez, R., Fletcher, J., Garcia Garcia, M. E., Gasparini, P., Gburek-Augustat, J., Gonzalez Moron, D., Hamati, A., Harting, I., Hertzberg, C., Hill, A., Hobson, G. M., Innes, A. M., Kauffman, M., Kirwin, S. M., Kluger, G., Kolditz, P., Kotzaeridou, U., La Piana, R., Liston, E., Mcclintock, W., Mcentagart, M., Mckenzie, F., Melancon, S., Misbahuddin, A., Suri, M., Monton, F. I., Moutton, S., Murphy, R. P. J., Nickel, M., Onay, H., Orcesi, S., Ozkinay, F., Patzer, S., Pedro, H., Pekic, S., Pineda Marfa, M., Pizzino, A., Plecko, B., Poll-The, B. T., Popovic, V., Rating, D., Rioux, M. -F., Rodriguez Espinosa, N., Ronan, A., Ostergaard, J. R., Rossignol, E., Sanchez-Carpintero, R., Schossig, A., Senbil, N., Sonderberg Roos, L. K., Stevens, C. A., Synofzik, M., Sztriha, L., Tibussek, D., Timmann, D., Tonduti, D., van de Warrenburg, B. P., Vazquez-Lopez, M., Venkateswaran, S., Wasling, P., Wassmer, E., Webster, R. I., Wiegand, G., Yoon, G., Rotteveel, J., Schiffmann, R., van der Knaap, M. S., Vanderver, A., Martos-Moreno, G. A., Polychronakos, C., Wolf, N. I., Bernard, G., Human genetics, Pediatric surgery, Amsterdam Reproduction & Development (AR&D), and Amsterdam Neuroscience - Cellular & Molecular Mechanisms
Subjects: Male, Recessive Mutations, Mitochondrial Diseases, genetics [Mitochondrial Diseases], hypomyelination, etiology [Endocrine System Diseases], Endocrinology, Diabetes and Metabolism, Clinical Biochemistry, Medizin, POLR3A protein, human, genetics [Endocrine System Diseases], Biochemistry, Cohort Studies, 0302 clinical medicine, Endocrinology, etiology [Growth Disorders], Diagnosis, epidemiology [Growth Disorders], 4H leukodystrophy, Online Only articles, Child, Prospective cohort study, Growth Disorders, genetics [Growth Disorders], POLR3-related leukodystrophy, 0303 health sciences, DNA-Directed RNA Polymerases, Pattern-Recognition, Diffuse Hypomyelination, Classification, Disorders of movement Donders Center for Medical Neuroscience [Radboudumc 3], 3. Good health, epidemiology [Hereditary Central Nervous System Demyelinating Diseases], Hormone Deficiency, POLR1C protein, human, Child, Preschool, Female, medicine.symptom, AcademicSubjects/MED00250, Adult, Delayed puberty, Subunit, medicine.medical_specialty, Adolescent, Context (language use), Endocrine System Diseases, Short stature, genetics [Hereditary Central Nervous System Demyelinating Diseases], Genetic Heterogeneity, Young Adult, 03 medical and health sciences, SDG 3 - Good Health and Well-being, hypogonadotropic hypogonadism, Hypogonadotropic hypogonadism, etiology [Hypogonadism], Internal medicine, medicine, genetics [RNA Polymerase III], Humans, Endocrine system, ddc:610, POLR3B protein, human, genetics [DNA-Directed RNA Polymerases], Clinical Research Articles, Retrospective Studies, 030304 developmental biology, complications [Hereditary Central Nervous System Demyelinating Diseases], business.industry, Hypogonadism, Biochemistry (medical), Leukodystrophy, Infant, Newborn, Infant, RNA Polymerase III, medicine.disease, complications [Mitochondrial Diseases], epidemiology [Mitochondrial Diseases], epidemiology [Endocrine System Diseases], Hereditary Central Nervous System Demyelinating Diseases, Cross-Sectional Studies, Biological Variation, Population, Mutation, epidemiology [Hypogonadism], business, 030217 neurology & neurosurgery, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Hormone
Abstract: Context 4H or POLR3-related leukodystrophy is an autosomal recessive disorder typically characterized by hypomyelination, hypodontia, and hypogonadotropic hypogonadism, caused by biallelic pathogenic variants in POLR3A, POLR3B, POLR1C, and POLR3K. The endocrine and growth abnormalities associated with this disorder have not been thoroughly investigated to date. Objective To systematically characterize endocrine abnormalities of patients with 4H leukodystrophy. Design An international cross-sectional study was performed on 150 patients with genetically confirmed 4H leukodystrophy between 2015 and 2016. Endocrine and growth abnormalities were evaluated, and neurological and other non-neurological features were reviewed. Potential genotype/phenotype associations were also investigated. Setting This was a multicenter retrospective study using information collected from 3 predominant centers. Patients A total of 150 patients with 4H leukodystrophy and pathogenic variants in POLR3A, POLR3B, or POLR1C were included. Main Outcome Measures Variables used to evaluate endocrine and growth abnormalities included pubertal history, hormone levels (estradiol, testosterone, stimulated LH and FSH, stimulated GH, IGF-I, prolactin, ACTH, cortisol, TSH, and T4), and height and head circumference charts. Results The most common endocrine abnormalities were delayed puberty (57/74; 77% overall, 64% in males, 89% in females) and short stature (57/93; 61%), when evaluated according to physician assessment. Abnormal thyroid function was reported in 22% (13/59) of patients. Conclusions Our results confirm pubertal abnormalities and short stature are the most common endocrine features seen in 4H leukodystrophy. However, we noted that endocrine abnormalities are typically underinvestigated in this patient population. A prospective study is required to formulate evidence-based recommendations for management of the endocrine manifestations of this disorder., Canadian Institutes of Health Research [201610PJT-377869, MOP-G2-341146-159133-BRIDG]; Fondation Les Amis d'Elliot; Leuco-Action; Fondation Lueur d'Espoir pour Ayden; Fondation le Tout pour Loo; Reseau de Medecine Genetique Appliquee of the Fonds de Recherche du Quebec-Sante; Compute Canada; Fonds de Recherche du Quebec en Sante (FRQS) Doctoral Scholarship; Fondation du Grand defi Pierre Lavoie Doctoral Scholarship; McGill Faculty of Medicine F. S.B. Miller Fellowship; Research Institute of the McGill University Health Centre Desjardins Studentship in Child Health Research; Directorate of Higher Education Overseas Scholarship-Dikti Scholarship, Ministry of National Education, Republic of Indonesia; CIHR [201603PJT-148695]; BC Children's Hospital Foundation through its intramural Investigator Grant Award Program (IGAP); National Institute for Neurological Disorders and Stroke [R01NS082094]; Jakob Kamens Chair in Translational Neurotherapeutics; Fonds de Recherche du Quebec-Sante (FRQS); Canadian Institutes of Health Research; European Reference Network for Rare Neurological Disorders (ERN-RND) [739510], This study was supported by grants from the Canadian Institutes of Health Research (201610PJT-377869, MOP-G2-341146-159133-BRIDG), Fondation Les Amis d'Elliot, Leuco-Action, Fondation Lueur d'Espoir pour Ayden, Fondation le Tout pour Loo, and Reseau de Medecine Genetique Appliquee of the Fonds de Recherche du Quebec-Sante to G. Bernard. This research was enabled in part by support provided by Compute Canada (www.computecanada.ca).S.Perrier is supported by the Fonds de Recherche du Quebec en Sante (FRQS) Doctoral Scholarship, the Fondation du Grand defi Pierre Lavoie Doctoral Scholarship, the McGill Faculty of Medicine F. S.B. Miller Fellowship, and the Research Institute of the McGill University Health Centre Desjardins Studentship in Child Health Research. F. K.C. is a recipient of the Directorate of Higher Education Overseas Scholarship-Dikti Scholarship, Ministry of National Education, Republic of Indonesia. W.T. G. received funding from the CIHR (201603PJT-148695) and is supported by the BC Children's Hospital Foundation through its intramural Investigator Grant Award Program (IGAP). B.L. F. was supported by the National Institute for Neurological Disorders and Stroke (R01NS082094). A.V. receives funding from the Jakob Kamens Chair in Translational Neurotherapeutics. G. Bernard has received a Research Scholar Junior 1 award from the Fonds de Recherche du Quebec-Sante (FRQS) (2012-2016) and the New Investigator Salary Award from the Canadian Institutes of Health Research (2017-2022). I.K.M., M. Synofzik, D. Tonduti, B.P.v.d.W., M.S. V.d.K., and N.I.W. are members of the European Reference Network for Rare Neurological Disorders (ERN-RND), project ID 739510.
Published: 2021
Full Text: View/download PDF

43. Targeting the mitochondrial trifunctional protein restrains tumor growth in oxidative lung carcinomas

Author: Isabelle Redonnet-Vernhet, Nadège Bellance, Floriant Bellvert, Matthieu Thumerel, Nathalie Dugot-Senan, Mariana Figueiredo Rodrigues, Hamid Reza Rezvani, Hugues Begueret, Elodie Dumon, Fatima Mechta-Grigoriou, Rodrigue Rossignol, Didier Lacombe, Pauline Esteves, Giuseppe Punzi, Yann Kieffer, Julien Izotte, Nivea Dias Amoedo, Ciro Leonardo Pierri, Tony Lionel Palama, Saharnaz Sarlak, Benoit Rousseau, Jean-Marc Baste, Lara Gales, Stéphane Claverol, Emilie Obre, Alexis Dupis, Laetitia Dard, Véronique Guyonnet-Duperat, Walid Mafhouf, Cellomet [CHU Pellegrin, Bordeaux], CHU de Bordeaux Pellegrin [Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Bordeaux (UB), Hôpital Haut-Lévêque [CHU Bordeaux], CHU Bordeaux [Bordeaux], Unité de génétique et biologie des cancers (U830), Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Pellegrin, CHU de Bordeaux, Università degli studi di Bari Aldo Moro (UNIBA), Inserm U1035, Biotherapies des Maladies Genetiques et Cancers, Univ Bordeaux, CHU de Bordeaux, Pole de Biologie et Pathologie, Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Institut National de la Santé et de la Recherche Médicale (INSERM), Toulouse Biotechnology Institute (TBI), Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), Flow Cytometry Facility / TransBioMed Core [Bordeaux] (INSERM US005 - CNRS UMS 3427 - UB), Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Proteomics Core Facility (Protim), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Plateforme Génomique Santé Biogenouest®, Institut National de la Sante et de la Recherche Medicale (Inserm), National Council for Scientific and Technological Development (CNPq), Fondation ARC, French National Institute against cancer (Inca), Ligue nationale contre le cancer, ITN Marie Curie TRANSMIT (H2020-MSCA-ITN-2016) 722605, SIRIC-Brio2 (Project PRIME/IMS/COMMUCAN), CAPES, Canceropole GSO (Club Metabo-Cancer), Plan Cancer, Università degli studi di Bari Aldo Moro = University of Bari Aldo Moro (UNIBA), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), TBM-Core [Bordeaux] (UMS3427 - INSERM US005), Université de Rennes (UR)-Plateforme Génomique Santé Biogenouest®, Astruc, Suzette, Institut National des Sciences Appliquées (INSA)-Université Fédérale Toulouse Midi-Pyrénées-Institut National des Sciences Appliquées (INSA)-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE), and TBM-Core [Bordeaux] (CNRS UMS 3427 - INSERM US 005)
Subjects: 0301 basic medicine, Lung Neoplasms, Bioenergetics, Trimetazidine, Oxidative phosphorylation, Mitochondrial trifunctional protein, 03 medical and health sciences, 0302 clinical medicine, Drug Delivery Systems, In vivo, Cell Line, Tumor, medicine, Humans, Beta oxidation, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, Electron Transport Complex I, biology, Chemistry, Cancer, General Medicine, medicine.disease, 3. Good health, Neoplasm Proteins, 030104 developmental biology, 030220 oncology & carcinogenesis, Cancer research, biology.protein, Adenocarcinoma, Mitochondrial Trifunctional Protein, alpha Subunit, Oxidation-Reduction, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, medicine.drug, Research Article
Abstract: International audience; Metabolic reprogramming is a common hallmark of cancer, but a large variability in tumor bioenergetics exists between patients. Using high-resolution respirometry on fresh biopsies of human lung adenocarcinoma, we identified 2 subgroups reflected in the histologically normal, paired, cancer-adjacent tissue: high (OX+) mitochondrial respiration and low (OX-) mitochondrial respiration. The OX+ tumors poorly incorporated [F-18]fluorodeoxy-glucose and showed increased expression of the mitochondrial trifunctional fatty acid oxidation enzyme (MTP; HADHA) compared with the paired adjacent tissue. Genetic inhibition of MTP altered OX+ tumor growth in vivo. Trimetazidine, an approved drug inhibitor of MTP used in cardiology, also reduced tumor growth and induced disruption of the physical interaction between the MTP and respiratory chain complex I, leading to a cellular redox and energy crisis. MTP expression in tumors was assessed using histology scoring methods and varied in negative correlation with [F-18]fluorodeoxy-glucose incorporation. These findings provide proof-of-concept data for preclinical, precision, bioenergetic medicine in oxidative lung carcinomas.
Published: 2021
Full Text: View/download PDF

44. Novel variants in the BLOC1S3 gene in patients presenting a mild form of Hermansky-Pudlak syndrome

Author: Fabienne Giuliano, Carolina Marçon, Eulalie Lasseaux, Claudio Plaisant, Saba Azarnoush, Benoit Arveiler, Didier Lacombe, Catherine Vincent-Delorme, Angèle Tingaud-Sequeira, Yline Capri, Fanny Morice-Picard, Perrine Pennamen, Vincent Michaud, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, Male, Adolescent, Albinism, Lymphocyte, HPS-8, Dermatology, General Biochemistry, Genetics and Molecular Biology, Frameshift mutation, 03 medical and health sciences, 0302 clinical medicine, hemic and lymphatic diseases, Pulmonary fibrosis, medicine, Humans, Child, Gene, Immunodeficiency, Platelet dense granule deficiency, integumentary system, business.industry, Hermansky-Pudlak syndrome, respiratory system, medicine.disease, eye diseases, 3. Good health, Pedigree, Bleeding diathesis, 030104 developmental biology, medicine.anatomical_structure, Phenotype, Oncology, Hermanski-Pudlak Syndrome, 030220 oncology & carcinogenesis, Immunology, Mutation, Female, Hermansky–Pudlak syndrome, business, Carrier Proteins, BLOC1S3, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Hermansky-Pudlak syndrome (HPS) associates oculocutaneous albinism and systemic affections including platelet dense granules anomalies leading to bleeding diathesis and, depending on the form, pulmonary fibrosis, immunodeficiency, and/or granulomatous colitis. So far, 11 forms of autosomal recessive HPS caused by pathogenic variants in 11 different genes have been reported. We describe three HPS-8 consanguineous families with different homozygous pathogenic variants in BLOC1S3 (NM_212550.3), one of which is novel. These comprise two deletions leading to a reading frameshift (c.385_403del, c.338_341del) and one in frame deletion (c.444_467del). All patients have moderate oculocutaneous albinism and bleeding diathesis, but other HPS symptoms are not described. One patient diagnosed with HPS-8 suffered from lymphocyte-predominant Hodgkin lymphoma. The mild severity of HPS-8 is consistent with other HPS forms caused by variants in BLOC-1 complex coding genes (HPS-7, DTNBP1; HPS-9, BLOC1S6, HPS-11, BLOC1S5).
Published: 2021
Full Text: View/download PDF

45. Dopachrome tautomerase variants in patients with oculocutaneous albinism

Author: Vincent Michaud, Ian J. Jackson, Angèle Tingaud-Sequeira, Margaret A. Keighren, Didier Lacombe, Souad Gherbi Halem, Josseline Kaplan, Perrine Pennamen, Sandrine Marlin, Lisa McKie, Benoit Arveiler, Sophie Javerzat, Eulalie Lasseaux, Cédric Delevoye, Iveta Gazova, Claudio Plaisant, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), CHU Bordeaux [Bordeaux], University of Edinburgh, Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Paris (UP), Biologie Cellulaire et Cancer, Institut Curie [Paris]-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Admin, Oskar, and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPCité)
Subjects: 0301 basic medicine, Mouse, Albinism, 030105 genetics & heredity, Biology, Compound heterozygosity, Frameshift mutation, Mice, 03 medical and health sciences, Exon, 0302 clinical medicine, medicine, Animals, Humans, Missense mutation, Genetics (clinical), Zebrafish, 030304 developmental biology, Hypopigmentation, Genetics, 0303 health sciences, [SDV.MHEP] Life Sciences [q-bio]/Human health and pathology, Pigmentation, DCT, medicine.disease, Oculocutaneous albinism, 3. Good health, Intramolecular Oxidoreductases, Mice, Inbred C57BL, 030104 developmental biology, Albinism, Oculocutaneous, 030220 oncology & carcinogenesis, Mutation, medicine.symptom, Dopachrome tautomerase, INDEL Mutation, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: PurposeAlbinism is a clinically and genetically heterogeneous condition. Despite analysis of the nineteen known genes, ∼30% patients remain unsolved. We aimed to identify new genes involved in albinism.MethodsWe sequenced a panel of genes with known or predicted involvement in melanogenesis in 230 unsolved albinism patients.ResultsWe identified variants in theDopachrome tautomerase(DCT) gene in two patients. One was compound heterozygous for a 14 bp deletion in exon 9 and c.118T>A p.(Cys40Ser). The second was homozygous for c.183C>G p.(Cys61Trp). Both patients had mild hair and skin hypopigmentation, and classical ocular features. CRISPR/Cas9 was used in C57BL/6J mice to create mutations identical to the missense mutations carried by the patients, along with one loss-of-function indel mutation. When bred to homozygosity the three mutations revealed hypopigmentation of the coat, milder for Cys40Ser compared to Cys61Trp or the frameshift mutation. Histological analysis identified significant hypopigmentation of the retinal pigmented epithelium (RPE) indicating that defective RPE melanogenesis could be associated with eye and vision defects.DCTloss of function in zebrafish embryos elicited hypopigmentation both in melanocytes and RPE cells.ConclusionsDCTis the gene for a new type of oculocutaneous albinism that we propose to name OCA8.
Published: 2021
Full Text: View/download PDF

46. A recurrent missense variant in EYA3 gene is associated with oculo-auriculo-vertebral spectrum

Author: Benoit Arveiler, Angèle Tingaud-Sequeira, Rachel Stapleton, Didier Lacombe, Estelle Lopez, Aurélien Trimouille, Claudio Plaisant, Manju Salaria, Stéphane Claverol, Marc Bonneu, Caroline Rooryck, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Génomique Fonctionnelle Bordeaux [Bordeaux] (CGFB), and Institut Polytechnique de Bordeaux-Université de Bordeaux Ségalen [Bordeaux 2]
Subjects: Male, Embryo, Nonmammalian, DNA Repair, NF-E2-Related Factor 2, DNA repair, Mutation, Missense, Penetrance, Biology, medicine.disease_cause, Histones, Proto-Oncogene Proteins c-myc, 03 medical and health sciences, Goldenhar Syndrome, Exome Sequencing, Genetics, medicine, Animals, Humans, Missense mutation, Amino Acid Sequence, Child, Gene, Zebrafish, Genetics (clinical), Exome sequencing, Adaptor Proteins, Signal Transducing, 030304 developmental biology, Regulation of gene expression, 0303 health sciences, Mutation, Sequence Homology, Amino Acid, Siblings, 030305 genetics & heredity, RNA-Binding Proteins, YAP-Signaling Proteins, Pedigree, DNA-Binding Proteins, Gene Expression Regulation, Child, Preschool, Female, Protein Tyrosine Phosphatases, PPARGC1B, Sequence Alignment, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, Transcription Factors
Abstract: Goldenhar syndrome or oculo-auriculo-vertebral spectrum (OAVS) is a complex developmental disorder characterized by asymmetric ear anomalies, hemifacial microsomia, ocular and vertebral defects. We aimed at identifying and characterizing a new gene associated with OAVS. Two affected brothers with OAVS were analyzed by exome sequencing that revealed a missense variant (p.(Asn358Ser)) in the EYA3 gene. EYA3 screening was then performed in 122 OAVS patients that identified the same variant in one individual from an unrelated family. Segregation assessment in both families showed incomplete penetrance and variable expressivity. We investigated this variant in cellular models to determine its pathogenicity and demonstrated an increased half-life of the mutated protein without impact on its ability to dephosphorylate H2AFX following DNA repair pathway induction. Proteomics performed on this cellular model revealed four significantly predicted upstream regulators which are PPARGC1B, YAP1, NFE2L2 and MYC. Moreover, eya3 knocked-down zebrafish embryos developed specific craniofacial abnormalities corroborating previous animal models and supporting its involvement in the OAVS. Additionally, EYA3 gene expression was deregulated in vitro by retinoic acid exposure. EYA3 is the second recurrent gene identified to be associated with OAVS. Moreover, based on protein interactions and related diseases, we suggest the DNA repair as a key molecular pathway involved in craniofacial development.
Published: 2021
Full Text: View/download PDF

47. Using deep-neural-network-driven facial recognition to identify distinct Kabuki syndrome 1 and 2 gestalt

Author: Didier Lacombe, Claire Duflos, David Geneviève, Jeanne Amiel, Elodie Sanchez, Yline Capri, Damien Sanlaville, Marlène Rio, Alexandra Afenjar, Fabienne Giuliano, Elise Brischoux-Boucher, Mathilde Nizon, Stanislas Lyonnet, Sébastien Moutton, Vincent Gatinois, Stéphanie Arpin, Annick Toutain, Mouna Barat-Houari, Guilaine Boursier, Flavien Rouxel, Sophie Julia, Klaus Dieterich, Aurélia Jacquette, Boris Keren, Kevin Yauy, Patricia Blanchet, Marie-Line Jacquemont, Damien Haye, Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Cellules Souches, Plasticité Cellulaire, Médecine Régénératrice et Immunothérapies (IRMB), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM), Service de génétique médicale, Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Service de génétique [Tours], Centre Hospitalier Régional Universitaire de Tours (CHRU Tours)-Hôpital Bretonneau, Imagerie et cerveau (iBrain - Inserm U1253 - UNIV Tours ), Université de Tours (UT)-Institut National de la Santé et de la Recherche Médicale (INSERM), Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), Université de Lausanne (UNIL), AP-HP Hôpital universitaire Robert-Debré [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), CHU Pitié-Salpêtrière [AP-HP], Imagine - Institut des maladies génétiques (IHU) (Imagine - U1163), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris Cité (UPC), CHU Necker - Enfants Malades [AP-HP], [GIN] Grenoble Institut des Neurosciences (GIN), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Grenoble Alpes (UGA), CHU Grenoble, Centre de génétique humaine [CHRU Besançon], Centre Hospitalier Régional Universitaire de Besançon (CHRU Besançon), Université de Franche-Comté (UFC), Université Bourgogne Franche-Comté [COMUE] (UBFC), CHU Toulouse [Toulouse], Centre hospitalier universitaire de Nantes (CHU Nantes), GRC ConCer-LD, CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Maison de Santé Protestante Bagatelle, Centre Hospitalier Universitaire de La Réunion (CHU La Réunion), Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS), Hôpital Femme Mère Enfant [CHU - HCL] (HFME), and Hospices Civils de Lyon (HCL)
Subjects: Image Series, [SDV.IB.IMA]Life Sciences [q-bio]/Bioengineering/Imaging, Biology, [INFO.INFO-NE]Computer Science [cs]/Neural and Evolutionary Computing [cs.NE], Facial recognition system, Article, Genetics, medicine, Humans, Abnormalities, Multiple, Genetics (clinical), [SDV.MHEP.PED]Life Sciences [q-bio]/Human health and pathology/Pediatrics, Artificial neural network, Receiver operating characteristic, business.industry, Significant difference, Genetic disorder, [INFO.INFO-CV]Computer Science [cs]/Computer Vision and Pattern Recognition [cs.CV], Pattern recognition, medicine.disease, Hematologic Diseases, Vestibular Diseases, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics, Face, Mutation, Gestalt psychology, Artificial intelligence, business, Kabuki syndrome, Facial Recognition
Abstract: International audience; Kabuki syndrome (KS) is a rare genetic disorder caused by mutations in two major genes, KMT2D and KDM6A, that are responsible for Kabuki syndrome 1 (KS1, OMIM147920) and Kabuki syndrome 2 (KS2, OMIM300867), respectively. We lack a description of clinical signs to distinguish KS1 and KS2. We used facial morphology analysis to detect any facial morphological differences between the two KS types. We used a facial-recognition algorithm to explore any facial morphologic differences between the two types of KS. We compared several image series of KS1 and KS2 individuals, then compared images of those of Caucasian origin only (12 individuals for each gene) because this was the main ethnicity in this series. We also collected 32 images from the literature to amass a large series. We externally validated results obtained by the algorithm with evaluations by trained clinical geneticists using the same set of pictures. Use of the algorithm revealed a statistically significant difference between each group for our series of images, demonstrating a different facial morphotype between KS1 and KS2 individuals (mean area under the receiver operating characteristic curve = 0.85 [p = 0.027] between KS1 and KS2). The algorithm was better at discriminating between the two types of KS with images from our series than those from the literature (p = 0.0007). Clinical geneticists trained to distinguished KS1 and KS2 significantly recognised a unique facial morphotype, which validated algorithm findings (p = 1.6e-11). Our deep-neural-network-driven facial-recognition algorithm can reveal specific composite gestalt images for KS1 and KS2 individuals.
Published: 2021
Full Text: View/download PDF

48. A new case with Hermansky-Pudlak syndrome type 9, a rare cause of syndromic albinism with severe defect of platelets dense bodies

Author: Yoann Huguenin, Mathieu Fiore, Fanny Morice-Picard, Claudio Plaisant, Vincent Michaud, Jean-Claude Bordet, Benoit Arveiler, V. Coste, Eulalie Lasseaux, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: 0301 basic medicine, Blood Platelets, Pathology, medicine.medical_specialty, Albinism, 030204 cardiovascular system & hematology, 03 medical and health sciences, 0302 clinical medicine, hemic and lymphatic diseases, medicine, Humans, Platelet, Hermansky-Pudlak Syndrome, integumentary system, business.industry, Infant, Hematology, General Medicine, respiratory system, medicine.disease, Oculocutaneous albinism, eye diseases, 3. Good health, 030104 developmental biology, Hermanski-Pudlak Syndrome, Female, Hermansky–Pudlak syndrome, business, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology
Abstract: Hermansky-Pudlak syndrome (HPS) is a rare form of syndromic oculocutaneous albinism caused by disorders in lysosome-related organelles. Ten genes are associated with different forms of HPS. HPS type 9 (HPS-9) is caused by biallelic variants of BLOC1S6. To date, only three patients with HPS-9 have been reported. We described one patient presenting with ocular features of albinism. Genetic analysis revealed two compound heterozygous variants in the BLOC1S6 gene. Extended hematological studies confirmed the platelet storage pool disease with absence of dense granules and abnormal platelet aggregation. By reviewing the previous published cases we confirm the phenotype of HPS-9 patients. This patient is the only one described with dextrocardia and abnormal psychomotor development.
Published: 2021
Full Text: View/download PDF

49. Human γδ T cell sensing of AMPK-dependent metabolic tumor reprogramming through TCR recognition of EphA2

Author: Emilie Obre, Jean-François Moreau, Rodrigue Rossignol, Christelle Harly, Benoit Viollet, Angela Pappalardo, Vincent Pitard, Isabelle Soubeyran, Charlotte Domblides, Fiyaz Mohammed, Stéphane Claverol, Omar Hawchar, Sonia Netzer, Carla Cano, Layal Massara, Julie Déchanet-Merville, Carrie R. Willcox, Lydia Lartigue, Charlotte Mannat, S.P. Joyce, Benjamin Faustin, Isabelle Mahouche, Thomas Bachelet, Benjamin E. Willcox, Lionel Couzi, Immunology from Concept and Experiments to Translation (ImmunoConcept), Université de Bordeaux (UB)-Centre National de la Recherche Scientifique (CNRS), University of Birmingham [Birmingham], TBM-Core [Bordeaux] (CNRS UMS 3427 - INSERM US 005), Université de Bordeaux (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Bordeaux [Bordeaux], Centre Génomique Fonctionnelle Bordeaux [Bordeaux] (CGFB), Institut Polytechnique de Bordeaux-Université de Bordeaux Ségalen [Bordeaux 2], Cellomet [CHU Pellegrin, Bordeaux], CHU de Bordeaux Pellegrin [Bordeaux], Université de Bordeaux (UB), Actions for OnCogenesis understanding and Target Identification in ONcology (ACTION), Institut Bergonié [Bordeaux], UNICANCER-UNICANCER-Université Bordeaux Segalen - Bordeaux 2-Institut National de la Santé et de la Recherche Médicale (INSERM), UNICANCER, ImCheck Therapeutics [Marseille], Laboratoire d'immunologie et d'immunogénétique [CHU Bordeaux], Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Cochin (IC UM3 (UMR 8104 / U1016)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Université Paris Descartes - Paris 5 (UPD5), Janssen Research & Development, Bernardo, Elizabeth, Centre National de la Recherche Scientifique (CNRS)-Université de Bordeaux (UB), Flow Cytometry Facility / TransBioMed Core [Bordeaux] (INSERM US005 - CNRS UMS 3427 - UB), Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Bordeaux Segalen - Bordeaux 2-Institut Bergonié [Bordeaux], UNICANCER-UNICANCER, and Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP)
Subjects: 0301 basic medicine, T cell, CD3, Immunology, [SDV.CAN]Life Sciences [q-bio]/Cancer, Biology, AMP-Activated Protein Kinases, Cell Line, 03 medical and health sciences, 0302 clinical medicine, [SDV.CAN] Life Sciences [q-bio]/Cancer, Neoplasms, medicine, Ephrin, Animals, Humans, Antigens, Intraepithelial Lymphocytes, Tissue homeostasis, Mice, Knockout, Receptor, EphA2, T-cell receptor, AMPK, Antibodies, Monoclonal, Receptors, Antigen, T-Cell, gamma-delta, General Medicine, EPH receptor A2, Cell biology, 030104 developmental biology, medicine.anatomical_structure, 030220 oncology & carcinogenesis, Cancer cell, biology.protein
Abstract: International audience; Human γδ T cells contribute to tissue homeostasis and participate in epithelial stress surveillance through mechanisms that are not well understood. Here, we identified ephrin type-A receptor 2 (EphA2) as a stress antigen recognized by a human Vγ9Vδ1 TCR. EphA2 is recognized coordinately by ephrin A to enable γδ TCR activation. We identified a putative TCR binding site on the ligand-binding domain of EphA2 that was distinct from the ephrin A binding site. Expression of EphA2 was up-regulated upon AMP-activated protein kinase (AMPK)-dependent metabolic reprogramming of cancer cells, and coexpression of EphA2 and active AMPK in tumors was associated with higher CD3 T cell infiltration in human colorectal cancer tissue. These results highlight the potential of the human γδ TCR to cooperate with a co-receptor to recognize non-MHC-encoded proteins as signals of cellular dysregulation, potentially allowing γδ T cells to sense metabolic energy changes associated with either viral infection or cancer.
Published: 2021
Full Text: View/download PDF

50. Re-focusing on Agnathia-Otocephaly complex

Author: Consolato Sergi, Didier Lacombe, Jelena Martinovic, Tania Attié-Bitach, M.J. Perez, Julie Plaisancié, Christelle Cabrol, C.P. Chen, J. Aziza, Christel Thauvin-Robinet, Nicolas Chassaing, Estelle Colin, M. Aubert-Mucca, Patrick Calvas, C. Dubucs, Stéphanie Arpin, Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM), and Université de Bordeaux (UB)-Groupe hospitalier Pellegrin-Institut National de la Santé et de la Recherche Médicale (INSERM)
Subjects: Otocephaly, Agnathia, Biology, Bioinformatics, medicine.disease_cause, 03 medical and health sciences, symbols.namesake, 0302 clinical medicine, Treacher-Collins syndrome, medicine, General Dentistry, Genetic testing, Sanger sequencing, Mutation, Aglossia, medicine.diagnostic_test, Point mutation, 030206 dentistry, medicine.disease, Phenotype, 3. Good health, Agnathia-otocephaly complex, CNBP, 030220 oncology & carcinogenesis, symbols, PRRX1, Craniofacial development, [SDV.MHEP]Life Sciences [q-bio]/Human health and pathology, OTX2
Abstract: Objectives: Agnathia-otocephaly complex is a rare condition characterized by mandibular hypoplasia or agnathia, ear anomalies (melotia/synotia) and microstomia with aglossia. This severe anomaly of the first branchial arch is most often lethal. The estimated incidence is less than 1 in 70.000 births, with etiologies linked to both genetic and teratogenic factors. Most of the cases are sporadic. To date, two genes have been described in humans to be involved in this condition: OTX2 and PRRX1. Nevertheless, the overall proportion of mutated cases is unknown and a significant number of patients remain without molecular diagnosis. Thus, the involvement of other genes than OTX2 and PRRX1 in the agnathia-otocephaly complex is not unlikely. Heterozygous mutations in Cnbp in mice are responsible for mandibular and eye defects mimicking the agnathia-otocephaly complex in humans and appear as a good candidate. Therefore, in this study, we aimed (i) to collect patients presenting with agnathia-otocephaly complex for screening CNBP, in parallel with OTX2 and PRRX1, to check its possible implication in the human phenotype and (ii) to compare our results with the literature data to estimate the proportion of mutated cases after genetic testing. Materials and methods: In this work, we describe 10 patients suffering from the agnathia-otocephaly complex. All of them benefited from array-CGH and Sanger sequencing of OTX2, PRRX1 and CNBP. A complete review of the literature was made using the Pubmed database to collect all the patients described with a phenotype of agnathia-otocephaly complex during the 20 last years (1998-2019) in order (i) to study etiology (genetic causes, iatrogenic causes...) and (ii), when genetic testing was performed, to study which genes were tested and by which type of technologies. Results: In our 10 patients’ cohort, no point mutation in the three tested genes was detected by Sanger sequencing, while array-CGH has allowed identifying a 107-kb deletion encompassing OTX2 responsible for the agnathia-otocephaly complex phenotype in 1 of them. In 4 of the 70 cases described in the literature, a toxic cause was identified and 22 out the 66 remaining cases benefited from genetic testing. Among those 22 patients, 6 were carrying mutation or deletion in the OTX2 gene and 4 in the PRRX1 gene. Thus, when compiling results from our cohort and the literature, a total of 32 patients benefited from genetic testing, with only 34% (11/32) of patients having a mutation in one of the two known genes, OTX2 or PRRX1. Conclusions: From our work and the literature review, only mutations in OTX2 and PRRX1 have been found to date in patients, explaining around one third of the etiologies after genetic testing. Thus, agnathia-otocephaly complex remains unexplained in the majority of the patients, which indicates that other factors might be involved. Although involved in first branchial arch defects, no mutation in the CNBP gene was found in this study. This suggests that mutations in CNBP might not be involved in such phenotype in humans or that, unlike in mice, a compensatory effect might exist in humans. Nevertheless, given that agnathia-otocephaly complex is a rare phenotype, more patients have to be screened for CNBP mutations before we definitively conclude about its potential implication. Therefore, this work presents the current state of knowledge on agnathia-otocephaly complex and underlines the need to expand further the understanding of the genetic bases of this disorder, which remains largely unknown. Clinical relevance: We made here an update and focus on the clinical and genetic aspects of agnathia-otocephaly complex as well as a more general review of craniofacial development.
Published: 2021
Full Text: View/download PDF

Catalog

Books, media, physical & digital resources

See catalog results

Searchworks

Select search scope, currently: Articles Catalog books, media & more in Jio Institute collections Articles journal articles & other e-resources

Search

Search Constraints

Refine your results

Search Limiters

Topic

Publication Year Range

Language

Journal

Database

Publisher

103 results on '"Laboratoire Maladies Rares: Génétique et Métabolisme (Bordeaux) (U1211 INSERM/MRGM)"'

Search Results

Catalog

Select search scope, currently: Articles

Catalog

books, media & more in Jio Institute collections

Articles

journal articles & other e-resources