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1. Widening of the genetic and clinical spectrum of Lamb-Shaffer syndrome, a neurodevelopmental disorder due to SOX5 haploinsufficiency

Author

Ashley N. Sigafoos, Salima El Chehadeh, Marcia C. Willing, Ela Akay, Florian Cherik, Anne-Marie E. Goyette, Vinodh Narayanan, Diane Masser-Frye, Catherine Karimov, Rhonda E. Schnur, Rebekah Bressi, Rhys H. Thomas, Gary D. Clark, Tina Barbaro-Dieber, Jill A. Rosenfeld, Carlos A. Bacino, Maria J. Guillen Sacoto, Laura Russell, Kristin Lindstrom, Caroline Schluth-Bolard, Xia Wang, Yvonne Hilhorst-Hofstee, Marcelo Vargas, Zehua Zhu, Ash Zawerton, Boris Keren, Mariëtte J.V. Hoffer, Isabelle Marey, Alice Poisson, Daphné Lehalle, Maries Joseph, Gaetan Lesca, Simon Zwolinski, Laurence Perrin, Rhoda Akilapa, Emilia K. Bijlsma, Christel Depienne, Amélie Piton, Claire G. Salter, Lucie Dupuis, Daryl A. Scott, Jolien S. Klein Wassink-Ruiter, Benjamin Cogné, Mathilde Nizon, Richard Chang, Kirsty McWalter, Myriam Srour, Perrine Charles, Anne-Claude Tabet, Natalie Canham, Sylvie Odent, Caroline Nava, Karl J. Clark, Elizabeth J. Bhoj, Jonathan Levy, Keri Ramsey, Yves Alembik, Lucia Ortega, Sophie Dupuis-Girod, Shoji Ichikawa, Christine Francannet, Marta Bertoli, Christèle Dubourg, Eric W. Klee, Ange-Line Bruel, Sebastien Moutton, Emily Fassi, Anthony Vandersteen, Abdul Haseeb, Antonina Wojcik, Patrick R. Blackburn, Lynne M. Bird, Patrick Rump, Véronique Lefebvre, Alma Kuechler, Sophie Nambot, Keren Machol, Cyril Mignot, Andreas Hartmann, Rossana Sanchez Russo, Erica H. Gerkes, Sylvie Jaillard, Roberto Mendoza-Londono, Trevor Cole, Pauline Monin, Cleveland Clinic, 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], Sorbonne Université (SU)-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 National de la Recherche Scientifique (CNRS), Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], CHU Pitié-Salpêtrière [AP-HP], Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Génétique humaine et fonctions cognitives - Human Genetics and Cognitive Functions (GHFC (UMR_3571 / U-Pasteur_1)), Institut Pasteur [Paris]-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), 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), Centre de recherche en neurosciences de Lyon (CRNL), Université Claude Bernard Lyon 1 (UCBL), 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), Hospices Civils de Lyon (HCL), Centre d'Etude et de Recherche Multimodal Et Pluridisciplinaire en imagerie du vivant (CERMEP - imagerie du vivant), Université de Lyon-Université de Lyon-CHU Grenoble-Hospices Civils de Lyon (HCL)-CHU Saint-Etienne-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), 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, Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Centre National de la Recherche Scientifique (CNRS)-Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique ), CHU Pontchaillou [Rennes], Institut de recherche en santé, environnement et travail (Irset), Structure Fédérative de Recherche en Biologie et Santé de Rennes ( Biosit : Biologie - Santé - Innovation Technologique )-Institut National de la Santé et de la Recherche Médicale (INSERM)-École des Hautes Études en Santé Publique [EHESP] (EHESP)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Université d'Angers (UA), Center for Human and Clinical Genetics, Leiden University Medical Center (LUMC), Service de génétique médicale - Unité de génétique clinique [Nantes], Université de Nantes (UN)-Centre hospitalier universitaire de Nantes (CHU Nantes), unité de recherche de l'institut du thorax UMR1087 UMR6291 (ITX), Université de Nantes - UFR de Médecine et des Techniques Médicales (UFR MEDECINE), Université de Nantes (UN)-Université de Nantes (UN)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), 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), Department of Health Sciences Research [Mayo Clinic] (HSR), Mayo Clinic, This research was funded in part by the Agence Nationale de la Recherche and European High-Functioning Autism Network (ANR EUHFAUTISM), the Assistance Publique–Hôpitaux de Paris (AP-HP), the Institut National de la Santé et de la Recherche Médicale (INSERM), the BioPsy labex (to Christel Depienne and C.N.) and the Association Française du Syndrome Gilles de la Tourette (AFSGT) to Christel Depienne. It was also funded by the Cleveland Clinic Lerner Research Institute (LRI Chair’s Innovative Research Award to V.L.), and by Harper’s Quest and the LAMSHF Syndrome Research Fund (donations to V.L.) and the Center for Individualized Medicine, Mayo Clinic. This study makes use of data generated by the DECIPHER community and the Deciphering Developmental Disorders (DDD) Study, which is funded by the Wellcome Trust. The DDD study presents independent research commissioned by the Health Innovation Challenge Fund (grant number HICF-1009-003), a parallel funding partnership between Wellcome and the Department of Health, and the Wellcome Sanger Institute (grant number WT098051). The views expressed in this publication are those of the author(s) and not necessarily those of Wellcome or the Department of Health. The study has UK Research Ethics Committee approval (10/H0305/83, granted by the Cambridge South REC, and GEN/284/12 granted by the Republic of Ireland REC). The research team acknowledges the support of the National Institute for Health Research, through the Comprehensive Clinical Research Network., We thank the patients and their families for their participation in this study, and the C4RCD Research Group (Newell Belnap, Amanda Courtright, Ana Claasen, David Craig, Matt Huentelman, Madison LaFleur, Sampathkumar Rangasamy, Ryan Richholt, Isabelle Schrauwen, Ashley L. Siniard, and Szabolics Szelinger) for providing clinical information on patient P18., Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Pitié-Salpêtrière [APHP]-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Service de Génétique et Cytogénétique [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS)-Institut Pasteur [Paris], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-AP-HP Hôpital universitaire Robert-Debré [Paris], Centre d'Exploration et de Recherche Médicales par Émission de Positons (CERMEP), Université Joseph Fourier - Grenoble 1 (UJF)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-CHU Grenoble-Hospices Civils de Lyon (HCL)-CHU Saint-Etienne-Université Jean Monnet [Saint-Étienne] (UJM)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université de Bourgogne (UB)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale (INSERM), 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 ), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), and Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)

Subjects
Male, Medizin, Haploinsufficiency, L-SOX5, VARIANTS, 0302 clinical medicine, Neurodevelopmental disorder, Intellectual disability, Missense mutation, 2.1 Biological and endogenous factors, Aetiology, Child, Genetics (clinical), Genetics, Pediatric, Genetics & Heredity, 0303 health sciences, Pedigree, FAMILY, DNA-Binding Proteins, developmental delay, TRANSCRIPTION FACTORS, Phenotype, intellectual disability, Child, Preschool, missense variants, Female, SOXD Transcription Factors, Adult, EXPRESSION, Adolescent, Intellectual and Developmental Disabilities (IDD), Clinical Sciences, Mutation, Missense, autism, Cell fate determination, Biology, LONG FORM, SEQUENCE, Article, 03 medical and health sciences, Young Adult, Rare Diseases, Clinical Research, CARTILAGE, Intellectual Disability, medicine, Animals, Humans, Language Development Disorders, Genetic Predisposition to Disease, Preschool, Transcription factor, Gene, 030304 developmental biology, [SDV.GEN]Life Sciences [q-bio]/Genetics, MUTATIONS, Human Genome, Infant, medicine.disease, Brain Disorders, Neurodevelopmental Disorders, Deciphering Developmental Disorder Study, Mutation, Autism, epilepsy, Missense, 030217 neurology & neurosurgery, GENERATION
Abstract

International audience; PURPOSE: Lamb-Shaffer syndrome (LAMSHF) is a neurodevelopmental disorder described in just over two dozen patients with heterozygous genetic alterations involving SOX5, a gene encoding a transcription factor regulating cell fate and differentiation in neurogenesis and other discrete developmental processes. The genetic alterations described so far are mainly microdeletions. The present study was aimed at increasing our understanding of LAMSHF, its clinical and genetic spectrum, and the pathophysiological mechanisms involved.METHODS: Clinical and genetic data were collected through GeneMatcher and clinical or genetic networks for 41 novel patients harboring various types of SOX5 alterations. Functional consequences of selected substitutions were investigated.RESULTS: Microdeletions and truncating variants occurred throughout SOX5. In contrast, most missense variants clustered in the pivotal SOX-specific high-mobility-group domain. The latter variants prevented SOX5 from binding DNA and promoting transactivation in vitro, whereas missense variants located outside the high-mobility-group domain did not. Clinical manifestations and severity varied among patients. No clear genotype-phenotype correlations were found, except that missense variants outside the high-mobility-group domain were generally better tolerated.CONCLUSIONS:This study extends the clinical and genetic spectrum associated with LAMSHF and consolidates evidence that SOX5 haploinsufficiency leads to variable degrees of intellectual disability, language delay, and other clinical features.

Published
2020

2. Expanding the mutational landscape and clinical phenotype of the YIF1B related brain disorder

Author

Ibrahim H. Kaya, Mehran Beiraghi Toosi, Peter Bauer, Farah Ashrafzadeh, Najmeh Ahangari, Stefan T. Arold, Aida M. Bertoli-Avella, Antonina Wojcik, Mohammad A. Al-Muhaizea, Kelly J. Cardona-Londoño, Meisam Babaei, Amber Begtrup, Nouriya Al-Sannaa, Dilek Colak, Elisa Cali, Ehsan Ghayoor Karimiani, Marian Y. Girgis, Obdulia Sanchez‐Lijarcio, Namik Kaya, Chin-To Fong, Marcelo Vargas, Shima Imannezhad, Tahsin Stefan Barakat, David Murphy, Audrey Schroeder, Paria Najarzadeh Torbati, Henry Houlden, Anita Nikoncuk, Kristina Lanko, Belén Pérez, Salvador Ibáñez-Mico, Reza Maroofian, Mohammad Doosti, Tainá Regina Damaceno Silveira, Ruizhi Deng, Eva Medico Salsench, and Clinical Genetics

Subjects
Male, Mice, Knockout, AcademicSubjects/SCI01870, Vesicular Transport Proteins, Library science, Golgi Apparatus, Scholarship, Mice, Human disease, Neurodevelopmental Disorders, Political science, Mutation, Animals, Humans, AcademicSubjects/MED00310, Female, Neurology (clinical), Cilia, Clinical phenotype, Erasmus+, Letter to the Editor, Disability research, Cells, Cultured
Abstract

Human post-natal neurodevelopmental delay is often associated with cerebral alterations that can lead, by themselves or associated with peripheral deficits, to premature death. Here, we report the clinical features of 10 patients from six independent families with mutations in the autosomal YIF1B gene encoding a ubiquitous protein involved in anterograde traffic from the endoplasmic reticulum to the cell membrane, and in Golgi apparatus morphology. The patients displayed global developmental delay, motor delay, visual deficits with brain MRI evidence of ventricle enlargement, myelination alterations and cerebellar atrophy. A similar profile was observed in the Yif1b knockout (KO) mouse model developed to identify the cellular alterations involved in the clinical defects. In the CNS, mice lacking Yif1b displayed neuronal reduction, altered myelination of the motor cortex, cerebellar atrophy, enlargement of the ventricles, and subcellular alterations of endoplasmic reticulum and Golgi apparatus compartments. Remarkably, although YIF1B was not detected in primary cilia, biallelic YIF1B mutations caused primary cilia abnormalities in skin fibroblasts from both patients and Yif1b-KO mice, and in ciliary architectural components in the Yif1b-KO brain. Consequently, our findings identify YIF1B as an essential gene in early post-natal development in human, and provide a new genetic target that should be tested in patients developing a neurodevelopmental delay during the first year of life. Thus, our work is the first description of a functional deficit linking Golgipathies and ciliopathies, diseases so far associated exclusively to mutations in genes coding for proteins expressed within the primary cilium or related ultrastructures. We therefore propose that these pathologies should be considered as belonging to a larger class of neurodevelopmental diseases depending on proteins involved in the trafficking of proteins towards specific cell membrane compartments.

Published
2021

3. Artificial intelligence in genetic services delivery: Utopia or apocalypse?

Author

Elizabeth Kearney, Deepti Babu, and Antonina Wojcik

Subjects
0303 health sciences, Health professionals, business.industry, Genetic Services, media_common.quotation_subject, Genetic counseling, Health Personnel, 030305 genetics & heredity, Genomics, 03 medical and health sciences, 0302 clinical medicine, Artificial Intelligence, 030220 oncology & carcinogenesis, Utopia, Humans, Sociology, Artificial intelligence, Applications of artificial intelligence, business, Genetics (clinical), media_common, Medical literature
Abstract

Artificial intelligence (AI) technologies have a long history, with increasing presence and potential in society and medicine. Much of the medical literature is highly optimistic about AI and machine learning, but fears also exist that healthcare professionals will be replaced by machines. AI remains mysterious for many practitioners, so this paper aims to unwind both hype and fear related to the technology for genetics professionals. After an historical introduction to AI in understandable and practical terms, we review its limitations. Building upon this foundation, we discuss current AI applications in medicine, including genomics and genetic counseling, offering grounded ideas about the impact and role of AI in genetic counseling and delivery of genetic services. Since AI is already being used in genomics today, now is the time to fundamentally understand what it is, how it is being used, what its limitations are, and how it will continue to be integrated into genetics as we look ahead.

Published
2019

4. Ocular findings in a patient with oculofaciocardiodental (OFCD) syndrome and a novel BCOR pathogenic variant

Author

Antonina Wojcik, Sudhi P. Kurup, Bahram Rahmani, Victoria R. Sanders, and Yujia Zhou

Subjects
0301 basic medicine, Pathology, medicine.medical_specialty, genetic structures, 030105 genetics & heredity, Cataract, Muscle hypertrophy, 03 medical and health sciences, Ductus arteriosus, Proto-Oncogene Proteins, OFCD SYNDROME, medicine, Blepharoptosis, Humans, Microphthalmos, Syndactyly, Eye Abnormalities, Exome sequencing, Retrospective Studies, Retina, business.industry, Heart Septal Defects, Infant, Laryngeal cleft, medicine.disease, eye diseases, Repressor Proteins, Ophthalmology, 030104 developmental biology, medicine.anatomical_structure, Congenital cataracts, Female, sense organs, medicine.symptom, business
Abstract

To report a case of OFCD associated with a de novo BCOR pathogenic variant and highlight the ocular findings and possible mechanisms. A retrospective chart review of the patient’s ocular and systemic findings was performed. The patient underwent diagnostic whole exome sequencing (WES). The patient had a comprehensive eye exam in infancy demonstrating bilateral congenital cataracts consisting of posterior lenticonus with a posterior cortical opacity. She also had blepharoptosis with a hooded appearance and retinal pigment hypertrophy of the inferior retina bilaterally. Systemic findings include atrial septal defect, patent ductus arteriosus, congenital clubfoot, syndactyly, tethered cord, and laryngeal cleft. WES identified a de novo heterozygous R1136X pathogenic variant in the BCOR gene. The typical ocular manifestation of OFCD syndrome is congenital cataracts, which can have a significant impact on visual development and so should be considered in patients with multiple medical issues that may fit the diagnosis. A comprehensive eye exam in these patients is thus warranted.

Published
2017

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