49 results on '"Rieubland C"'
Search Results
2. Development, behaviour and autism in individuals with SMC1A variants
- Author
-
Mulder, P.A., Huisman, S., Landlust, A.M., Moss, J., Bader, I., Balkom, I.D.C. van, Bisgaard, A.M., Brooks, A., Cereda, A., Cinca, C., Clark, D., Cormier-Daire, V., Deardorff, M.A., Diderich, K., Elting, M., Essen, A. van, FitzPatrick, D., Gervasini, C., Gillessen-Kaesbach, G., Girisha, K.M., Hennekam, R.C., Hilhorst-Hofstee, Y., Hopman, S., Horn, D., Isrie, M., Jansen, S., Jespersgaard, C., Kaiser, F.J., Kaur, M., Kleefstra, T., Krantz, I.D., Lakeman, P., Lessel, D., Michot, C., Noon, S.E., Oliver, C., Parenti, I., Pie, J., Piening, S., Puisac, B., Ramos, F.J., Redeker, E., Rieubland, C., Russo, S., Selicorni, A., Tumer, Z., Vorstenbosch, R., Vries, I.M., Wenger, T.L., Wierzba, J., SMC1A Consortium, Clinical Genetics, Pediatric surgery, APH - Quality of Care, Human genetics, Amsterdam Reproduction & Development (AR&D), Graduate School, ANS - Cellular & Molecular Mechanisms, and Paediatric Genetics
- Subjects
cognition ,Male ,Autism Spectrum Disorder ,Chromosomal Proteins, Non-Histone ,CHILDREN ,Cell Cycle Proteins ,COMMUNICATION ,Pediatrics ,0302 clinical medicine ,De Lange Syndrome ,Intellectual disability ,Developmental and Educational Psychology ,Spectrum disorder ,Child ,self-injurious behaviour ,05 social sciences ,SELF-INJURIOUS-BEHAVIOR ,Perinatology ,PREVALENCE ,and Child Health ,Psychiatry and Mental health ,Phenotype ,DE-LANGE-SYNDROME ,Autism spectrum disorder ,Child, Preschool ,Female ,Psychology ,050104 developmental & child psychology ,Clinical psychology ,Behavioural phenotype ,Adult ,Down syndrome ,cornelia de lange syndrome ,Cornelia de Lange Syndrome ,Adolescent ,autism ,Rett syndrome ,03 medical and health sciences ,Young Adult ,All institutes and research themes of the Radboud University Medical Center ,Journal Article ,medicine ,Humans ,0501 psychology and cognitive sciences ,Cognitive Dysfunction ,Pediatrics, Perinatology, and Child Health ,rett syndrome ,SPECTRUM DISORDER ,Neurodevelopmental disorders Donders Center for Medical Neuroscience [Radboudumc 7] ,MUTATIONS ,Infant ,NIPBL ,medicine.disease ,Cross-Sectional Studies ,Pediatrics, Perinatology and Child Health ,Autism ,Down Syndrome ,Self-Injurious Behavior ,030217 neurology & neurosurgery - Abstract
Introduction: Development and behaviour in Cornelia de Lange Syndrome (CdLS), including autism characteristics, have been described infrequently stratified to genetic cause and only a few studies have considered behavioural characteristics in relation to developmental level. Here, we describe the behavioural phenotype in individuals with CdLS with SMC1A variants. Methods: We performed an international, interdisciplinary study on 51 individuals with SMC1A variants. Results of questionnaire studies are compared to those in individuals with Down Syndrome and with Autism Spectrum Disorder. Results on cognition and self-injurious behaviour (SIB) are compared to those in individuals with CdLS caused by NIPBL variants. For Dutch participants with SMC1A variants we performed direct in-person assessments of cognition, autism, and added an interview and questionnaire on adaptive behaviour and sensory processing. Results: Individuals with SMC1A variants show a higher cognitive level and less SIB than individuals with NIPBL variants. Individuals with SMC1A variants without classic CdLS phenotype but with a Rett-like phenotype show more severe intellectual disability and more SIB compared to those with a CdLS phenotype. Autism is less present if outcomes in direct in-person assessments are evaluated taking developmental level into account compared to results based on a questionnaire. Conclusions: Behaviour in individuals with CdLS should be evaluated taking genetic cause into account. Detailed interdisciplinary approaches are of clinical importance to inform tailored care and may eventually improve quality of life of patients and families.
- Published
- 2019
3. Clinical delineation, sex differences, and genotype-phenotype correlation in pathogenic KDM6A variants causing X-linked Kabuki syndrome type 2
- Author
-
Faundes, V., Goh, S., Akilapa, R., Bezuidenhout, H., Bjornsson, H.T., Bradley, L., Brady, A.F., Brischoux-Boucher, E., Brunner, H.G., Bulk, S., Canham, N., Cody, D., Dentici, M.L., Digilio, M.C., Elmslie, F., Fry, A.E., Gill, H., Hurst, J., Johnson, D., Julia, S., Lachlan, K., Lebel, R.R., Byler, M., Gershon, E., Lemire, E., Gnazzo, M., Lepri, F.R., Marchese, Antonia, McEntagart, M., McGaughran, J., Mizuno, S., Okamoto, N., Rieubland, C., Rodgers, J., Sasaki, E., Scalais, E., Scurr, I., Suri, M., Burgt, I. van der, Matsumoto, N., Miyake, N., Benoit, V., Lederer, D., Banka, S., Faundes, V., Goh, S., Akilapa, R., Bezuidenhout, H., Bjornsson, H.T., Bradley, L., Brady, A.F., Brischoux-Boucher, E., Brunner, H.G., Bulk, S., Canham, N., Cody, D., Dentici, M.L., Digilio, M.C., Elmslie, F., Fry, A.E., Gill, H., Hurst, J., Johnson, D., Julia, S., Lachlan, K., Lebel, R.R., Byler, M., Gershon, E., Lemire, E., Gnazzo, M., Lepri, F.R., Marchese, Antonia, McEntagart, M., McGaughran, J., Mizuno, S., Okamoto, N., Rieubland, C., Rodgers, J., Sasaki, E., Scalais, E., Scurr, I., Suri, M., Burgt, I. van der, Matsumoto, N., Miyake, N., Benoit, V., Lederer, D., and Banka, S.
- Abstract
Contains fulltext : 237823.pdf (Publisher’s version ) (Open Access), PURPOSE: The variant spectrum and the phenotype of X-linked Kabuki syndrome type 2 (KS2) are poorly understood. METHODS: Genetic and clinical details of new and published individuals with pathogenic KDM6A variants were compiled and analyzed. RESULTS: Sixty-one distinct pathogenic KDM6A variants (50 truncating, 11 missense) from 80 patients (34 males, 46 females) were identified. Missense variants clustered in the TRP 2, 3, 7 and Jmj-C domains. Truncating variants were significantly more likely to be de novo. Thirteen individuals had maternally inherited variants and one had a paternally inherited variant. Neonatal feeding difficulties, hypoglycemia, postnatal growth retardation, poor weight gain, motor delay, intellectual disability (ID), microcephaly, congenital heart anomalies, palate defects, renal malformations, strabismus, hearing loss, recurrent infections, hyperinsulinism, seizures, joint hypermobility, and gastroesophageal reflux were frequent clinical findings. Facial features of over a third of patients were not typical for KS. Males were significantly more likely to be born prematurely, have shorter stature, and severe developmental delay/ID. CONCLUSION: We expand the KDM6A variant spectrum and delineate the KS2 phenotype. We demonstrate that the variability of the KS2 phenotypic depends on sex and the variant type. We also highlight the overlaps and differences between the phenotypes of KS2 and KS1.
- Published
- 2021
4. NF1 : l’analyse moléculaire dans la pratique clinique
- Author
-
Rieubland, C., Vidaud, D., and Jacquemont, S.
- Published
- 2007
- Full Text
- View/download PDF
5. Arthrogryposis multiplex congenita: fetal sonographic, clinical and genetic findings in seven cases from a tertiary care center in Switzerland
- Author
-
Radan, A.-P, additional, Mosimann, B, additional, Trottmann, F, additional, Rieubland, C, additional, Surbek, D, additional, and Raio, L, additional
- Published
- 2020
- Full Text
- View/download PDF
6. Detection of cryptic pathogenic copy number variations and constitutional loss of heterozygosity using high resolution SNP microarray analysis in 117 patients referred for cytogenetic analysis and impact on clinical practice
- Author
-
Bruno, D L, Ganesamoorthy, D, Schoumans, J, Bankier, A, Coman, D, Delatycki, M, Gardner, R J M, Hunter, M, James, P A, Kannu, P, McGillivray, G, Pachter, N, Peters, H, Rieubland, C, Savarirayan, R, Scheffer, I E, Sheffield, L, Tan, T, White, S M, Yeung, A, Bowman, Z, Ngo, C, Choy, K W, Cacheux, V, Wong, L, Amor, D J, and Slater, H R
- Published
- 2009
- Full Text
- View/download PDF
7. Detection of cryptic pathogenic copy number variations and constitutional loss of heterozygosity using high resolution SNP microarray analysis in 117 patients referred to cytogenetic analysis and impact on clinical practice
- Author
-
Bruno, D.L., Ganesamoorthy, D., Schoumans, J., Bankier, A., Coman, D., Delatycki, M., Gardner, R.J.M., Hunter, M., James, P.A., Kannu, P., McGillivray, G., Pachter, N., Peters, H., Rieubland, C., Savarirayan, R., Scheffer, I.E., Sheffield, L., Tan, T., White, S.M., Yeung, A., Bowman, Zho, Ngo, C., Choy, K.W., Cacheux, V., Wong, L., Amor, D.J., and Slater, H.R.
- Subjects
DNA microarrays -- Usage ,DNA microarrays -- Research ,Genetic disorders -- Diagnosis ,Genetic disorders -- Research ,Genetic variation -- Analysis ,Single nucleotide polymorphisms -- Analysis ,Health - Published
- 2009
8. SCN5A mutations in 442 neonates and children: genotype-phenotype correlation and identification of higher-risk subgroups.
- Author
-
Baruteau, A, Kyndt, F, Behr, E, Vink, A, Lachaud, M, Joong, A, Schott, J, Horie, M, Denjoy, I, Crotti, L, Shimizu, W, Bos, J, Stephenson, E, Wong, L, Abrams, D, Davis, A, Winbo, A, Dubin, A, Sanatani, S, Liberman, L, Kaski, J, Rudic, B, Kwok, S, Rieubland, C, Tfelt-Hansen, J, Van Hare, G, Guyomarc'h-Delasalle, B, Blom, N, Wijeyeratne, Y, Gourraud, J, Le Marec, H, Ozawa, J, Fressart, V, Lupoglazoff, J, Dagradi, F, Spazzolini, C, Aiba, T, Tester, D, Zahavich, L, Beauséjour-Ladouceur, V, Jadhav, M, Skinner, J, Franciosi, S, Krahn, A, Abdelsayed, M, Ruben, P, Yung, T, Ackerman, M, Wilde, A, Schwartz, P, Probst, V, Baruteau, AE, Behr, ER, Vink, AS, Schott, JJ, Bos, JM, Stephenson, EA, Abrams, DJ, Davis, AM, Dubin, AM, Kaski, JP, Kwok, SY, Van Hare, GF, Blom, NA, Wijeyeratne, YD, Gourraud, JB, Lupoglazoff, JM, Tester, DJ, Zahavich, LA, Skinner, JR, Krahn, AD, Ruben, PC, Yung, TC, Ackerman, MJ, Wilde, AA, Schwartz, PJ, Probst, V., Baruteau, A, Kyndt, F, Behr, E, Vink, A, Lachaud, M, Joong, A, Schott, J, Horie, M, Denjoy, I, Crotti, L, Shimizu, W, Bos, J, Stephenson, E, Wong, L, Abrams, D, Davis, A, Winbo, A, Dubin, A, Sanatani, S, Liberman, L, Kaski, J, Rudic, B, Kwok, S, Rieubland, C, Tfelt-Hansen, J, Van Hare, G, Guyomarc'h-Delasalle, B, Blom, N, Wijeyeratne, Y, Gourraud, J, Le Marec, H, Ozawa, J, Fressart, V, Lupoglazoff, J, Dagradi, F, Spazzolini, C, Aiba, T, Tester, D, Zahavich, L, Beauséjour-Ladouceur, V, Jadhav, M, Skinner, J, Franciosi, S, Krahn, A, Abdelsayed, M, Ruben, P, Yung, T, Ackerman, M, Wilde, A, Schwartz, P, Probst, V, Baruteau, AE, Behr, ER, Vink, AS, Schott, JJ, Bos, JM, Stephenson, EA, Abrams, DJ, Davis, AM, Dubin, AM, Kaski, JP, Kwok, SY, Van Hare, GF, Blom, NA, Wijeyeratne, YD, Gourraud, JB, Lupoglazoff, JM, Tester, DJ, Zahavich, LA, Skinner, JR, Krahn, AD, Ruben, PC, Yung, TC, Ackerman, MJ, Wilde, AA, Schwartz, PJ, and Probst, V.
- Abstract
Aims: To clarify the clinical characteristics and outcomes of children with SCN5A-mediated disease and to improve theirrisk stratification. Methods and results: A multicentre, international, retrospective cohort study was conducted in 25 tertiary hospitals in 13 countries between1990 and 2015. All patients <_16 years of age diagnosed with a genetically confirmed SCN5A mutation wereincluded in the analysis. There was no restriction made based on their clinical diagnosis. A total of 442 children{55.7% boys, 40.3% probands, median age: 8.0 [interquartile range (IQR) 9.5] years} from 350 families wereincluded; 67.9% were asymptomatic at diagnosis. Four main phenotypes were identified: isolated progressive cardiacconduction disorders (25.6%), overlap phenotype (15.6%), isolated long QT syndrome type 3 (10.6%), and isolatedBrugada syndrome type 1 (1.8%); 44.3% had a negative electrocardiogram phenotype. During a medianfollow-up of 5.9 (IQR 5.9) years, 272 cardiac events (CEs) occurred in 139 (31.5%) patients. Patients whose mutationlocalized in the C-terminus had a lower risk. Compound genotype, both gain- and loss-of-function SCN5A mutation,age <_1 year at diagnosis in probands and age <_1 year at diagnosis in non-probands were independent predictorsof CE.Conclusion In this large paediatric cohort of SCN5A mutation-positive subjects, cardiac conduction disorders were the mostprevalent phenotype; CEs occurred in about one-third of genotype-positive children, and several independent riskfactors were identified, including age <_1 year at diagnosis, compound mutation, and mutation with both gain- andloss-of-function.
- Published
- 2018
9. Phenotypes and genotypes in individuals with SMC1A variants
- Author
-
Huisman, S., Mulder, P.A., Redeker, E., Bader, I., Bisgaard, A.M., Brooks, A., Cereda, A., Cinca, C., Clark, D., Cormier-Daire, V., Deardorff, M.A., Diderich, K., Elting, M., Essen, A. van, Fitzpatrick, D., Gervasini, C., Gillessen-Kaesbach, G., Girisha, K.M., Hilhorst-Hofstee, Y., Hopman, S., Horn, D., Isrie, M., Jansen, S, Jespersgaard, C., Kaiser, F.J., Kaur, M., Kleefstra, T., Krantz, I.D., Lakeman, P., Landlust, A., Lessel, D., Michot, C., Moss, J., Noon, S.E., Oliver, C., Parenti, I., Pie, J., Ramos, F.J., Rieubland, C., Russo, S., Selicorni, A., Tumer, Z., Vorstenbosch, R., Wenger, T.L., Balkom, I.D.C. van, Piening, S., Wierzba, J., Hennekam, R.C., Huisman, S., Mulder, P.A., Redeker, E., Bader, I., Bisgaard, A.M., Brooks, A., Cereda, A., Cinca, C., Clark, D., Cormier-Daire, V., Deardorff, M.A., Diderich, K., Elting, M., Essen, A. van, Fitzpatrick, D., Gervasini, C., Gillessen-Kaesbach, G., Girisha, K.M., Hilhorst-Hofstee, Y., Hopman, S., Horn, D., Isrie, M., Jansen, S, Jespersgaard, C., Kaiser, F.J., Kaur, M., Kleefstra, T., Krantz, I.D., Lakeman, P., Landlust, A., Lessel, D., Michot, C., Moss, J., Noon, S.E., Oliver, C., Parenti, I., Pie, J., Ramos, F.J., Rieubland, C., Russo, S., Selicorni, A., Tumer, Z., Vorstenbosch, R., Wenger, T.L., Balkom, I.D.C. van, Piening, S., Wierzba, J., and Hennekam, R.C.
- Abstract
Item does not contain fulltext, SMC1A encodes one of the proteins of the cohesin complex. SMC1A variants are known to cause a phenotype resembling Cornelia de Lange syndrome (CdLS). Exome sequencing has allowed recognizing SMC1A variants in individuals with encephalopathy with epilepsy who do not resemble CdLS. We performed an international, interdisciplinary study on 51 individuals with SMC1A variants for physical and behavioral characteristics, and compare results to those in 67 individuals with NIPBL variants. For the Netherlands all known individuals with SMC1A variants were studied, both with and without CdLS phenotype. Individuals with SMC1A variants can resemble CdLS, but manifestations are less marked compared to individuals with NIPBL variants: growth is less disturbed, facial signs are less marked (except for periocular signs and thin upper vermillion), there are no major limb anomalies, and they have a higher level of cognitive and adaptive functioning. Self-injurious behavior is more frequent and more severe in the NIPBL group. In the Dutch group 5 of 13 individuals (all females) had a phenotype that shows a remarkable resemblance to Rett syndrome: epileptic encephalopathy, severe or profound intellectual disability, stereotypic movements, and (in some) regression. Their missense, nonsense, and frameshift mutations are evenly spread over the gene. We conclude that SMC1A variants can result in a phenotype resembling CdLS and a phenotype resembling Rett syndrome. Resemblances between the SMC1A group and the NIPBL group suggest that a disturbed cohesin function contributes to the phenotype, but differences between these groups may also be explained by other underlying mechanisms such as moonlighting of the cohesin genes.
- Published
- 2017
10. Phenotypes and genotypes in individuals with SMC1A variants
- Author
-
Huisman, S.A. (Sylvia), Mulder, P.A. (Paul A.), Redeker, E.J.W. (Egbert), Bader, I. (Ingrid), Bisgaard, A.-M. (Anne-Marie), Brooks, A.S. (Alice), Cereda, A., Cinca, C. (Constanza), Clark, D. (Dinah), Cormier-Daire, V. (Valerie), Deardorff, M.A. (Matthew), Diderich, K.E.M. (Karin), Elting, M. (Mariet), Essen, J.A. (Anthonie) van, Fitzpatrick, D.R. (David R.), Gervasini, C., Gillessen-Kaesbach, G. (Gabriele), Girisha, K.M. (Katta M), Hilhorst-Hofstee, Y. (Yvonne), Hopman, S.M.J. (Saskia), Horn, D. (Denise), Isrie, M. (Mala), Jansen, S. (Sandra), Jespersgaard, C. (Cathrine), Kaiser, F.J. (Frank), Kaur, M. (Maninder), Kleefstra, T. (Tjitske), Krantz, D.H. (David), Lakeman, P. (Phillis), Landlust, A. (Annemiek), Lessel, D. (Davor), Michot, C. (Caroline), Moss, J. (Jo), Noon, S.E. (Sarah E.), Oliver, C. (Chris), Parenti, I., Pie, J. (Juan), Ramos, F.J., Rieubland, C. (Claudine), Russo, S. (Sascha), Selicorni, A. (Angelo), Tümer, Z., Vorstenbosch, R. (Rieneke), Wenger, T.L. (Tara L.), van Balkom, I. (Ingrid), Piening, S. (Sigrid), Wierzba, J. (Jolanta), Hennekam, R.C.M. (Raoul), Huisman, S.A. (Sylvia), Mulder, P.A. (Paul A.), Redeker, E.J.W. (Egbert), Bader, I. (Ingrid), Bisgaard, A.-M. (Anne-Marie), Brooks, A.S. (Alice), Cereda, A., Cinca, C. (Constanza), Clark, D. (Dinah), Cormier-Daire, V. (Valerie), Deardorff, M.A. (Matthew), Diderich, K.E.M. (Karin), Elting, M. (Mariet), Essen, J.A. (Anthonie) van, Fitzpatrick, D.R. (David R.), Gervasini, C., Gillessen-Kaesbach, G. (Gabriele), Girisha, K.M. (Katta M), Hilhorst-Hofstee, Y. (Yvonne), Hopman, S.M.J. (Saskia), Horn, D. (Denise), Isrie, M. (Mala), Jansen, S. (Sandra), Jespersgaard, C. (Cathrine), Kaiser, F.J. (Frank), Kaur, M. (Maninder), Kleefstra, T. (Tjitske), Krantz, D.H. (David), Lakeman, P. (Phillis), Landlust, A. (Annemiek), Lessel, D. (Davor), Michot, C. (Caroline), Moss, J. (Jo), Noon, S.E. (Sarah E.), Oliver, C. (Chris), Parenti, I., Pie, J. (Juan), Ramos, F.J., Rieubland, C. (Claudine), Russo, S. (Sascha), Selicorni, A. (Angelo), Tümer, Z., Vorstenbosch, R. (Rieneke), Wenger, T.L. (Tara L.), van Balkom, I. (Ingrid), Piening, S. (Sigrid), Wierzba, J. (Jolanta), and Hennekam, R.C.M. (Raoul)
- Abstract
SMC1A encodes one of the proteins of the cohesin complex. SMC1A variants are known to cause a phenotype resembling Cornelia de Lange syndrome (CdLS). Exome sequencing has allowed recognizing SMC1A variants in individuals with encephalopathy with epilepsy who do not resemble CdLS. We performed an international, interdisciplinary study on 51 individuals with SMC1A variants for physical and behavioral characteristics, and compare results to those in 67 individuals with NIPBL variants. For the Netherlands all known individuals with SMC1A variants were studied, both with and without CdLS phenotype. Individuals with SMC1A variants can resemble CdLS, but manifestations are less marked compared to individuals with NIPBL variants: growth is less disturbed, facial signs are less marked (except for periocular signs and thin upper vermillion), there are no major limb anomalies, and they have a higher level of cognitive and adaptive functioning. Self-injurious behavior is more frequent and more severe in the NIPBL group. In the Dutch group 5 of 13 individuals (all females) had a phenotype that shows a remarkable resemblance to Rett syndrome: epileptic encephalopathy, severe or profound intellectual disability, stereotypic movements, and (in some) regression. Their missense, nonsense, and frameshift mutations are evenly spread over the gene. We conclude that SMC1A variants can result in a phenotype resembling CdLS and a phenotype resembling Rett syndrome. Resemblances between the SMC1A group and the NIPBL group suggest that a disturbed cohesin function contributes to the phenotype, but differences between these groups may also be explained by other underlying mechanisms such as moonlighting of the cohesin genes.
- Published
- 2017
- Full Text
- View/download PDF
11. Phenotypes and genotypes in individuals with SMC1A variants
- Author
-
Huisman, S, Mulder, PA, Redeker, E, Bader, I, Bisgaard, AM, Brooks, A, Cereda, A, Cinca, C, Clark, D, Cormier-Daire, V, Deardorff, MA, Diderich, K, Elting, M, van Essen, A, FitzPatrick, D, Gervasini, C, Gillessen-Kaesbach, G, Girisha, KM, Hilhorst-Hofstee, Y, Hopman, S, Horn, D, Isrie, M, Jansen, S (Silke), Jespersgaard, C, Kaiser, FJ, Kaur, M, Kleefstra, T, Krantz, ID, Lakeman, P, Landlust, A, Lessel, D, Michot, C, Moss, J, Noon, SE, Oliver, C, Parenti, I, Pie, J, Ramos, FJ, Rieubland, C, Russo, S, Selicorni, A, Tumer, Z, van de Vorstenbosch, R, Wenger, TL, van Balkom, I, Piening, S, Wierzba, J, Hennekam, RC, Huisman, S, Mulder, PA, Redeker, E, Bader, I, Bisgaard, AM, Brooks, A, Cereda, A, Cinca, C, Clark, D, Cormier-Daire, V, Deardorff, MA, Diderich, K, Elting, M, van Essen, A, FitzPatrick, D, Gervasini, C, Gillessen-Kaesbach, G, Girisha, KM, Hilhorst-Hofstee, Y, Hopman, S, Horn, D, Isrie, M, Jansen, S (Silke), Jespersgaard, C, Kaiser, FJ, Kaur, M, Kleefstra, T, Krantz, ID, Lakeman, P, Landlust, A, Lessel, D, Michot, C, Moss, J, Noon, SE, Oliver, C, Parenti, I, Pie, J, Ramos, FJ, Rieubland, C, Russo, S, Selicorni, A, Tumer, Z, van de Vorstenbosch, R, Wenger, TL, van Balkom, I, Piening, S, Wierzba, J, and Hennekam, RC
- Published
- 2017
12. Sudden cardiac death in forensic medicine – Swiss recommendations for a multidisciplinary approach
- Author
-
Wilhelm, M, primary, Bolliger, SA, additional, Bartsch, C, additional, Fokstuen, S, additional, Gräni, C, additional, Martos, V, additional, Medeiros, Domingo, additional, Osculati, A, additional, Rieubland, C, additional, Sabatasso, S, additional, Saguner, AM, additional, Schyma, C, additional, Tschui, J, additional, Wyler, D, additional, Bhuiyan, ZA, additional, Fellmann, F, additional, and Michaud, K, additional
- Published
- 2015
- Full Text
- View/download PDF
13. Lambdoid synostosis and craniofacial dysmorphism with normal intellect: A novel syndrome?
- Author
-
Rieubland, C, Holmes, AD, Caramins, M, Roscioli, T, Amor, DJ, Rieubland, C, Holmes, AD, Caramins, M, Roscioli, T, and Amor, DJ
- Published
- 2011
14. Rapid detection of genetic variants in hypertrophic cardiomyopathy by custom DNA resequencing array in clinical practice
- Author
-
Fokstuen, S., primary, Munoz, A., additional, Melacini, P., additional, Iliceto, S., additional, Perrot, A., additional, Ozcelik, C., additional, Jeanrenaud, X., additional, Rieubland, C., additional, Farr, M., additional, Faber, L., additional, Sigwart, U., additional, Mach, F., additional, Lerch, R., additional, Antonarakis, S. E., additional, and Blouin, J.-L., additional
- Published
- 2011
- Full Text
- View/download PDF
15. Mutations in the SDHB gene are associated with extra-adrenal and/or malignant phaeochromocytomas
- Author
-
Ap, Gimenez-Roqueplo, Judith Favier, Rustin P, Rieubland C, Crespin M, Nau V, Khau Van Kien P, Corvol P, Pf, Plouin, Jeunemaitre X, and Comete, Network
16. SCN5A mutations in 442 neonates and children: genotype-phenotype correlation and identification of higher-risk subgroups
- Author
-
Michael J. Ackerman, Sonia Franciosi, Carla Spazzolini, Peter J. Schwartz, Laura Zahavich, Annika Winbo, Anna Joong, Hervé Le Marec, Arja S. Vink, Andrew D. Krahn, Isabelle Denjoy, Mangesh Jadhav, Béatrice Guyomarc’h-Delasalle, Virginie Beauséjour-Ladouceur, Johan M Bos, Nico A. Blom, Alban-Elouen Baruteau, Matthias Lachaud, Claudine Rieubland, Jean Marc Lupoglazoff, Minoru Horie, Yanushi D. Wijeyeratne, Peter C. Ruben, Mena Abdelsayed, Jonathan R. Skinner, Elijah R. Behr, George F. Van Hare, Dominic Abrams, Takeshi Aiba, Jean-Baptiste Gourraud, Arthur A.M. Wilde, Junichi Ozawa, Tak-cheung Yung, Wataru Shimizu, Jacob Tfelt-Hansen, Leonardo Liberman, Lia Crotti, Sit Yee Kwok, Anne M. Dubin, David J. Tester, Shubhayan Sanatani, Vincent Probst, Juan Pablo Kaski, Andrew M. Davis, Federica Dagradi, Elizabeth A. Stephenson, Véronique Fressart, Boris Rudic, Leonie C.H. Wong, F. Kyndt, Jean-Jacques Schott, Baruteau, A, Kyndt, F, Behr, E, Vink, A, Lachaud, M, Joong, A, Schott, J, Horie, M, Denjoy, I, Crotti, L, Shimizu, W, Bos, J, Stephenson, E, Wong, L, Abrams, D, Davis, A, Winbo, A, Dubin, A, Sanatani, S, Liberman, L, Kaski, J, Rudic, B, Kwok, S, Rieubland, C, Tfelt-Hansen, J, Van Hare, G, Guyomarc'h-Delasalle, B, Blom, N, Wijeyeratne, Y, Gourraud, J, Le Marec, H, Ozawa, J, Fressart, V, Lupoglazoff, J, Dagradi, F, Spazzolini, C, Aiba, T, Tester, D, Zahavich, L, Beauséjour-Ladouceur, V, Jadhav, M, Skinner, J, Franciosi, S, Krahn, A, Abdelsayed, M, Ruben, P, Yung, T, Ackerman, M, Wilde, A, Schwartz, P, Probst, V, Amsterdam Cardiovascular Sciences, Graduate School, ACS - Heart failure & arrhythmias, Cardiology, and Paediatric Cardiology
- Subjects
0301 basic medicine ,Male ,medicine.medical_specialty ,BIO/18 - GENETICA ,610 Medicine & health ,030204 cardiovascular system & hematology ,Lower risk ,Asymptomatic ,NAV1.5 Voltage-Gated Sodium Channel ,03 medical and health sciences ,Electrocardiography ,0302 clinical medicine ,Cardiac Conduction System Disease ,Interquartile range ,Loss of Function Mutation ,Risk Factors ,Internal medicine ,Genotype ,Cardiac conduction ,Medicine ,Humans ,Child ,Genetic Association Studies ,Brugada syndrome ,Brugada Syndrome ,Retrospective Studies ,business.industry ,Age Factors ,Infant, Newborn ,Infant ,Retrospective cohort study ,MED/11 - MALATTIE DELL'APPARATO CARDIOVASCOLARE ,medicine.disease ,Brugada syndrome, Genotype–phenotype correlation, Long QT syndrome, Progressive cardiac conduction disorders, SCN5A, Sodium channelopathy ,Long QT Syndrome ,030104 developmental biology ,Child, Preschool ,Gain of Function Mutation ,Cohort ,Asymptomatic Diseases ,Female ,medicine.symptom ,Cardiology and Cardiovascular Medicine ,business ,Follow-Up Studies - Abstract
Aims To clarify the clinical characteristics and outcomes of children with SCN5A-mediated disease and to improve their risk stratification. Methods and results A multicentre, international, retrospective cohort study was conducted in 25 tertiary hospitals in 13 countries between 1990 and 2015. All patients ≤ 16 years of age diagnosed with a genetically confirmed SCN5A mutation were included in the analysis. There was no restriction made based on their clinical diagnosis. A total of 442 children {55.7% boys, 40.3% probands, median age: 8.0 [interquartile range (IQR) 9.5] years} from 350 families were included; 67.9% were asymptomatic at diagnosis. Four main phenotypes were identified: isolated progressive cardiac conduction disorders (25.6%), overlap phenotype (15.6%), isolated long QT syndrome type 3 (10.6%), and isolated Brugada syndrome type 1 (1.8%); 44.3% had a negative electrocardiogram phenotype. During a median follow-up of 5.9 (IQR 5.9) years, 272 cardiac events (CEs) occurred in 139 (31.5%) patients. Patients whose mutation localized in the C-terminus had a lower risk. Compound genotype, both gain- and loss-of-function SCN5A mutation, age ≤ 1 year at diagnosis in probands and age ≤ 1 year at diagnosis in non-probands were independent predictors of CE. Conclusion In this large paediatric cohort of SCN5A mutation-positive subjects, cardiac conduction disorders were the most prevalent phenotype; CEs occurred in about one-third of genotype-positive children, and several independent risk factors were identified, including age ≤ 1 year at diagnosis, compound mutation, and mutation with both gain- and loss-of-function.
- Published
- 2017
17. A 600 kb deletion syndrome at 16p11.2 leads to energy imbalance and neuropsychiatric disorders
- Author
-
Laurent Pasquier, Anne V. Snow, David T. Miller, Louise Harewood, Christina Triantafallou, Timothy P.L. Roberts, Leighton B. Hinkley, Zili Chu, Louis Vallée, Alyss Lian Cavanagh, Evica Rajcan-Separovic, Patricia Blanchet, Fiona Miller, Robin P. Goin-Kochel, Beau Reilly, Bettina Cerban, Vanessa Siffredi, Bridget A. Fernandez, Roger Vaughan, Brianna M. Paul, Fanny Morice-Picard, Elisabeth Flori, Dominique Campion, Gérard Didelot, Anne Philippe, Christa Lese Martin, Srikantan S. Nagarajan, Joris Andrieux, Jacques Puechberty, Marie Pierre Cordier, Jill V. Hunter, Ellen van Binsbergen, Catherine Vincent-Delorme, Vivek Swarnakar, Jean Marie Cuisset, Monica Proud, Patrick Callier, Bert B.A. de Vries, Jeffrey I. Berman, Sarah J. Spence, Alexandra Bowe, Wendy K. Chung, Katy Ankenman, Katherine Hines, Sarah E. Gobuty, Philippe Jonveaux, Lisa Blaskey, Alice Goldenberg, Sylvie Jaillard, Alessandra Renieri, Anne M. Maillard, Tracy Luks, Lee Anne Green Snyder, Elliott H. Sherr, Sarah Y. Khan, Fabienne Prieur, Simon A. Zwolinski, Andres Metspalu, Ghislaine Plessis, Jean Chiesa, Rita J. Jeremy, Valérie Malan, Michèle Mathieu-Dramard, Loyse Hippolyte, Bethanny Smith-Packard, Andrea M. Paal, Bénédicte Duban Bedu, Claudine Rieubland, Jordan Burko, Sylvie Joriot, Philippe Conus, Dominique Bonneau, Benoit Arveiler, Nicole de Leeuw, Allison G. Dempsey, John E. Spiro, Julia Wenegrat, Bertrand Isidor, Cédric Le Caignec, Kyle J. Steinman, Bruno Delobel, Ashlie Llorens, Jacques S. Beckmann, Kelly Johnson, Sean Ackerman, Polina Bukshpun, Silvia Garza, Alexandre Reymond, Damien Sanlaville, Ellen Hanson, Martine Doco-Fenzy, Jacques Thonney, Mari Wakahiro, Juliane Hoyer, Jacqueline Vigneron, Katrin Õunap, Arthur L. Beaudet, Mandy Barker, Nicole Visyak, Sonia Bouquillon, W. Andrew Faucett, Raphael Bernier, Sudha Kilaru Kessler, Audrey Lynn Bibb, Dennis Shaw, R. Frank Kooy, Suzanne M E Lewis, Anna L. Laakman, Nicholas J. Pojman, Hubert Journel, Laura Bernardini, Arianne Stevens, Julia P. Owen, Rebecca Mc Nally Keehn, Stéphanie Selmoni, Sébastien Lebon, Aurélien Macé, Bruno Leheup, Saba Qasmieh, Zoltán Kutalik, Anita Rauch, Yiping Shen, Elysa J. Marco, Nathalie Van der Aa, Carina Ferrari, Noam D. Beckmann, Delphine Héron, Jennifer Tjernage, Benjamin Aaronson, Albert David, Marie Pierre Lemaitre, Muriel Holder, Eve Õiglane-Shlik, Anneke T. Vulto-van Silfhout, Flore Zufferey, Constance Atwell, Marta Benedetti, Ellen Grant, Jenna Elgin, Patricia Z. Page, Caroline Rooryck, Randy L. Buckner, Qixuan Chen, Laurence Faivre, Sébastien Jacquemont, Kerri P. Nowell, Florence Fellmann, Disciglio Vittoria, Katharina Magdalena Rötzer, Hana Lee, Alastair J. Martin, Marion Greenup, David H. Ledbetter, Katrin Männik, Morgan W. Lasala, Jennifer Gerdts, Hanalore Alupay, Florence Petit, Elizabeth Aylward, Gerald D. Fischbach, Mafalda Mucciolo, Maxwell Cheong, Gabriela Marzano, Frédérique Béna, Danielle Martinet, Timothy J. Moss, Odile Boute, Jennifer Olson, Marco Belfiore, Christina Fagerberg, Corby L. Dale, Robert M. Witwicki, Yolanda L. Evans, Melissa B. Ramocki, Marie-Claude Addor, Christèle Dubourg, Mariken Ruiter, Tuhin K. Sinha, Mieke M. van Haelst, Alan Packer, Kathleen E. McGovern, Christie M. Brewton, Stephen M. Kanne, Richard I. Fisher, Tracey Ward, Sophie Dupuis-Girod, Pratik Mukherjee, Simons VIP Consortium, 16p11.2 European Consortium, Addor, MC., Arveiler, B., Belfiore, M., Bena, F., Bernardini, L., Blanchet, P., Bonneau, D., Boute, O., Callier, P., Campion, D., Chiesa, J., Cordier, MP., Cuisset, JM., David, A., de Leeuw, N., de Vries, B., Didelot, G., Doco-Fenzy, M., Bedu, BD., Dubourg, C., Dupuis-Girod, S., Fagerberg, CR., Faivre, L., Fellmann, F., Fernandez, BA., Fisher, R., Flori, E., Goldenberg, A., Heron, D., Holder, M., Hoyer, J., Isidor, B., Jaillard, S., Jonveaux, P., Joriot, S., Journel, H., Kooy, F., le Caignec, C., Leheup, B., Lemaitre, MP., Lewis, S., Malan, V., Mathieu-Dramard, M., Metspalu, A., Morice-Picard, F., Mucciolo, M., Oiglane-Shlik, E., Ounap, K., Pasquier, L., Petit, F., Philippe, A., Plessis, G., Prieur, F., Puechberty, J., Rajcan-Separovic, E., Rauch, A., Renieri, A., Rieubland, C., Rooryck, C., Rötzer, KM., Ruiter, M., Sanlaville, D., Selmoni, S., Shen, Y., Siffredi, V., Thonney, J., Vallée, L., van Binsbergen, E., Van der Aa, N., van Haelst MM., Vigneron, J., Vincent-Delorme, C., Vittoria, D., Vulto-van Silfhout AT., Witwicki, RM., Zwolinski, SA., Bowe, A., Beaudet, AL., Brewton, CM., Chu, Z., Dempsey, AG., Evans, YL., Garza, S., Kanne, SM., Laakman, AL., Lasala, MW., Llorens, AV., Marzano, G., Moss, TJ., Nowell, KP., Proud, MB., Chen, Q., Vaughan, R., Berman, J., Blaskey, L., Hines, K., Kessler, S., Khan, SY., Qasmieh, S., Bibb, AL., Paal, AM., Page, PZ., Smith-Packard, B., Buckner, R., Burko, J., Cavanagh, AL., Cerban, B., Snow, AV., Snyder, LG., Keehn, RM., Miller, DT., Miller, FK., Olson, JE., Triantafallou, C., Visyak, N., Atwell, C., Benedetti, M., Fischbach, GD., Greenup, M., Packer, A., Bukshpun, P., Cheong, M., Dale, C., Gobuty, SE., Hinkley, L., Jeremy, RJ., Lee, H., Luks, TL., Marco, EJ., Martin, AJ., McGovern, KE., Nagarajan, SS., Owen, J., Paul, BM., Pojman, NJ., Sinha, T., Swarnakar, V., Wakahiro, M., Alupay, H., Aaronson, B., Ackerman, S., Ankenman, K., Elgin, J., Gerdts, J., Johnson, K., Reilly, B., Shaw, D., Stevens, A., Ward, T., Wenegrat, J., Other departments, Service de génétique médicale, Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), CHU Pontchaillou [Rennes], Department of Medical Genetics, Université de Lausanne (UNIL), Centre de Génétique Chromosomique, Hôpital Saint Vincent de Paul-GHICL, Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Baylor University-Baylor University, Texas Children's Hospital [Houston, USA], Department of pediatrics, Primary palliative Care Research Group, Community Health Sciences, General Practice Section, University of Edinburgh, Center for Integrative Genomics - Institute of Bioinformatics, Génopode (CIG), Swiss Institute of Bioinformatics [Lausanne] (SIB), Université de Lausanne (UNIL)-Université de Lausanne (UNIL), Physiopathologie et neuroprotection des atteintes du cerveau en développement, Université Paris Diderot - Paris 7 (UPD7)-Institut National de la Santé et de la Recherche Médicale (INSERM), Developmental Brain and Behaviour Unit, University of Southampton, Institute of Molecular and Cell Biology, University of Tartu, Department of Human Genetics, UCLA, University of California [Los Angeles] (UCLA), University of California-University of California-Semel Institute, 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 ), Service de Cytogénétique et de Biologie Cellulaire, Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Université de Lausanne = University of Lausanne (UNIL), Hôpital Saint Vincent de Paul-Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Université de Lausanne = University of Lausanne (UNIL)-Université de Lausanne = University of Lausanne (UNIL), University of California (UC)-University of California (UC)-Semel Institute, 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 ), Université de Rennes (UR)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], and Kooy, Frank
- Subjects
Adult ,Male ,Pediatrics ,medicine.medical_specialty ,Heterozygote ,Adolescent ,[SDV]Life Sciences [q-bio] ,Developmental Disabilities ,Biology ,Body Mass Index ,03 medical and health sciences ,Young Adult ,0302 clinical medicine ,Gene Order ,Genetics ,medicine ,Humans ,Copy-number variation ,Clinical genetics ,Obesity ,Young adult ,Child ,Genetics (clinical) ,030304 developmental biology ,Child Development Disorders, Pervasive/diagnosis ,Child Development Disorders, Pervasive/genetics ,Chromosome Deletion ,Chromosomes, Human, Pair 16 ,Developmental Disabilities/diagnosis ,Developmental Disabilities/genetics ,Female ,Intelligence Tests ,Phenotype ,Syndrome ,2. Zero hunger ,Psychiatry ,0303 health sciences ,Intelligence quotient ,Neuropsychology ,Complex traits ,medicine.disease ,Comorbidity ,3. Good health ,Autism spectrum disorder ,Child Development Disorders, Pervasive ,Autism ,Medical genetics ,Human medicine ,Copy-Number Variation ,030217 neurology & neurosurgery - Abstract
Background The recurrent ∼600 kb 16p11.2 BP4-BP5 deletion is among the most frequent known genetic aetiologies of autism spectrum disorder (ASD) and related neurodevelopmental disorders. Objective To define the medical, neuropsychological, and behavioural phenotypes in carriers of this deletion. Methods We collected clinical data on 285 deletion carriers and performed detailed evaluations on 72 carriers and 68 intrafamilial non-carrier controls. Results When compared to intrafamilial controls, full scale intelligence quotient (FSIQ) is two standard deviations lower in carriers, and there is no difference between carriers referred for neurodevelopmental disorders and carriers identified through cascade family testing. Verbal IQ (mean 74) is lower than non-verbal IQ (mean 83) and a majority of carriers require speech therapy. Over 80% of individuals exhibit psychiatric disorders including ASD, which is present in 15% of the paediatric carriers. Increase in head circumference (HC) during infancy is similar to the HC and brain growth patterns observed in idiopathic ASD. Obesity, a major comorbidity present in 50% of the carriers by the age of 7 years, does not correlate with FSIQ or any behavioural trait. Seizures are present in 24% of carriers and occur independently of other symptoms. Malformations are infrequently found, confirming only a few of the previously reported associations. Conclusions The 16p11.2 deletion impacts in a quantitative and independent manner FSIQ, behaviour and body mass index, possibly through direct influences on neural circuitry. Although non-specific, these features are clinically significant and reproducible. Lastly, this study demonstrates the necessity of studying large patient cohorts ascertained through multiple methods to characterise the clinical consequences of rare variants involved in common diseases.
- Published
- 2012
18. 16p11.2 600 kb Duplications confer risk for typical and atypical Rolandic epilepsy
- Author
-
Eva M. Reinthaler, Dennis Lal, Sebastien Lebon, Michael S. Hildebrand, Hans-Henrik M. Dahl, Brigid M. Regan, Martha Feucht, Hannelore Steinböck, Birgit Neophytou, Gabriel M. Ronen, Laurian Roche, Ursula Gruber-Sedlmayr, Julia Geldner, Edda Haberlandt, Per Hoffmann, Stefan Herms, Christian Gieger, Melanie Waldenberger, Andre Franke, Michael Wittig, Susanne Schoch, Albert J. Becker, Andreas Hahn, Katrin Männik, Mohammad R. Toliat, Georg Winterer, Holger Lerche, Peter Nürnberg, Heather Mefford, Ingrid E. Scheffer, Samuel F. Berkovic, Jacques S. Beckmann, Thomas Sander, Sebastien Jacquemont, Alexandre Reymond, Fritz Zimprich, Bernd A. Neubauer, Bernd Neubauer, Martina Mörzinger, Arvid Suls, Sarah Weckhuysen, Lieve Claes, Liesbet Deprez, Katrien Smets, Tine Van Dyck, Tine Deconinck, Peter De Jonghe, Rikke S Møller, Laura L. Klitten, Helle Hjalgrim, Kiel Campus, Ingo Helbig, Hiltrud Muhle, Philipp Ostertag, Sarah von Spiczak, Ulrich Stephani, Holger Trucks, Christian E. Elger, Ailing A. Kleefuß-Lie, Wolfram S. Kunz, Rainer Surges, Verena Gaus, Dieter Janz, Bettina Schmitz, Felix Rosenow, Karl Martin Klein, Philipp S. Reif, Wolfgang H. Oertel, Hajo M. Hamer, Felicitas Becker, Yvonne Weber, Bobby P.C. Koeleman, Carolien de Kovel, Dick Lindhout, Agnès Ameil, Joris Andrieux, Sonia Bouquillon, Odile Boute, Jeanne de Flandre, Jean Marie Cuisset, Jean-Christophe Cuvellier, Roger Salengro, Albert David, Bert de Vries, Marie-Ange Delrue, Martine Doco-Fenzy, Bridget A. Fernandez, Delphine Heron, Boris Keren, Robert Lebel, Bruno Leheup, Suzanne Lewis, Maria Antonietta Mencarelli, Cyril Mignot, Jean-Claude Minet, Alexandre Moerman, Fanny Morice-Picard, Mafalda Mucciolo, Katrin Ounap, Laurent Pasquier, Florence Petit, Francesca Ragona, Evica Rajcan-Separovic, Alessandra Renieri, Claudine Rieubland, Damien Sanlaville, Elisabeth Sarrazin, Yiping Shen, Mieke van Haelst, Anneke Vulto-van Silfhout, 16p11.2 European Consortium, EPICURE Consortium, EuroEPINOMICS Consortium, Reinthaler, EM., Zimprich, F., Feucht, M., Steinböck, H., Neophytou, B., Geldner, J., Gruber-Sedlmayr, U., Haberlandt, E., Ronen, GM., Roche, L., Lal, D., Nürnberg, P., Sander, T., Lerche, H., Neubauer, B., Mörzinger, M., Suls, A., Weckhuysen, S., Claes, L., Deprez, L., Smets, K., Van Dyck, T., Deconinck, T., De Jonghe, P., Møller, RS., Klitten, LL., Hjalgrim, H., Campus, K., Helbig, I., Muhle, H., Ostertag, P., von Spiczak, S., Stephani, U., Trucks, H., Elger, CE., Kleefuß-Lie, AA., Kunz, WS., Surges, R., Gaus, V., Janz, D., Schmitz, B., Rosenow, F., Klein, KM., Reif, PS., Oertel, WH., Hamer, HM., Becker, F., Weber, Y., Koeleman, BP., de Kovel, C., Lindhout, D., Ameil, A., Andrieux, J., Bouquillon, S., Boute, O., Cordier, MP., Cuisset, JM., Cuvellier, JC., David, A., de Vries, B., Delrue, MA., Doco-Fenzy, M., Fernandez, BA., Heron, D., Keren, B., Lebel, R., Leheup, B., Lewis, S., Mencarelli, MA., Mignot, C., Minet, JC., Moerman, A., Morice-Picard, F., Mucciolo, M., Ounap, K., Pasquier, L., Petit, F., Ragona, F., Rajcan-Separovic, E., Renieri, A., Rieubland, C., Sanlaville, D., Sarrazin, E., Shen, Y., van Haelst, M., Vulto-van Silfhout, A., and Other departments
- Subjects
Male ,DNA Copy Number Variations ,Chromosomes, Human, Pair 22 ,610 Medicine & health ,Locus (genetics) ,Biology ,Polymorphism, Single Nucleotide ,Temporal lobe ,Epilepsy ,Gene duplication ,Chromosome Duplication ,Genetics ,medicine ,Humans ,Copy-number variation ,Child ,Molecular Biology ,Genetics (clinical) ,Chromosomes, Human, Pair 15 ,Infant ,General Medicine ,Odds ratio ,medicine.disease ,Epilepsy, Rolandic ,Rolandic epilepsy ,Exact test ,Chromosomes, Human, Pair 1 ,Child, Preschool ,Female ,Chromosomes, Human, Pair 16 - Abstract
Rolandic epilepsy (RE) is the most common idiopathic focal childhood epilepsy. Its molecular basis is largely unknown and a complex genetic etiology is assumed in the majority of affected individuals. The present study tested whether six large recurrent copy number variants at 1q21, 15q11.2, 15q13.3, 16p11.2, 16p13.11 and 22q11.2 previously associated with neurodevelopmental disorders also increase risk of RE. Our association analyses revealed a significant excess of the 600 kb genomic duplication at the 16p11.2 locus (chr16: 29.5-30.1 Mb) in 393 unrelated patients with typical (n = 339) and atypical (ARE; n = 54) RE compared with the prevalence in 65,046 European population controls (5/393 cases versus 32/65,046 controls; Fisher's exact test P = 2.83 × 10(-6), odds ratio = 26.2, 95% confidence interval: 7.9-68.2). In contrast, the 16p11.2 duplication was not detected in 1738 European epilepsy patients with either temporal lobe epilepsy (n = 330) and genetic generalized epilepsies (n = 1408), suggesting a selective enrichment of the 16p11.2 duplication in idiopathic focal childhood epilepsies (Fisher's exact test P = 2.1 × 10(-4)). In a subsequent screen among children carrying the 16p11.2 600 kb rearrangement we identified three patients with RE-spectrum epilepsies in 117 duplication carriers (2.6%) but none in 202 carriers of the reciprocal deletion. Our results suggest that the 16p11.2 duplication represents a significant genetic risk factor for typical and atypical RE.
- Published
- 2014
19. Mirror extreme BMI phenotypes associated with gene dosage at the chromosome 16p11.2 locus
- Author
-
Stephen W. Scherer, Mònica Gratacòs, Kari Stefansson, Muriel Holder, Unnur Thorsteinsdottir, Lukas Forer, Katharina M. Roetzer, Josette Lucas, Claudia Schurmann, Satu Kaksonen, Armand Valsesia, Carina Wallgren-Pettersson, Barbara Leube, Alexandra I. F. Blakemore, Alexandre Moerman, Marco Belfiore, Anne Faudet, Dominique Gaillard, Roberto Ravazzolo, Dominique Bonneau, Marjo-Riitta Järvelin, Yongguo Yu, Louis Vallée, Bénédicte Demeer, Sophie Visvikis-Siest, Frédérique Béna, Brigitte H. W. Faas, Benoit Arveiler, Georg Homuth, Charles Coutton, Bénédicte de Fréminville, Giorgio Gimelli, Xavier Estivill, Richard I. Fisher, Stefania Gimelli, Wendy Roberts, Jacques S. Beckmann, Emilie Landais, Orah S. Platt, Robin G. Walters, Gudmar Thorleifsson, Alexandre Reymond, Anna-Liisa Hartikainen, Solenn Legallic, James F. Gusella, Peter Vollenweider, Gian Paolo Ramelli, Tõnu Esko, Boris Keren, Nine V A M Knoers, Fanny Morice-Picard, Dominique Campion, Odile Boute, Evica Rajcan-Separovic, Rolph Pfundt, Nathalie Bednarek, Martine Doco-Fenzy, Suzanne M E Lewis, Gérard Didelot, Mylène Beri, Engilbert Sigurdsson, Véronique Satre, Audrey Labalme, Carola Tengstrom, Florian Kronenberg, Florence Petit, Simon Zwolinksi, Philippe Froguel, Paul Elliott, Dorothée Cailley, Christian R. Marshall, Bruno Leheup, Klaus Dieterich, Janina S. Ried, Sylvie Jaillard, Armand Bottani, Stylianos E. Antonarakis, Elisabetta Lapi, Jean-Christophe Cuvellier, Robert M. Witwicki, Gérard Waeber, Christèle Dubourg, Marion Gérard, Lachlan J. M. Coin, Magalie Barth, Anita Kloss-Brandstätter, Vincent Mooser, Cristóbal Richart, Giuseppe Merla, Bénédicte Duban-Bedu, Yiping Shen, Ants Kurg, Audrey Guilmatre, Juliane Hoyer, Susana Jiménez-Murcia, Mafalda Mucciolo, Bai-Lin Wu, Alessandra Ferrarini, Séverine Drunat, Yves Alembik, Páll Magnússon, Han G. Brunner, Maria Antonietta Mencarelli, Dominique Descamps, R. Frank Kooy, Azzedine Aboura, Valérie Layet, Sven Bergmann, Thomas Meitinger, Peter M. Kroisel, Nathalie Van der Aa, Olivier Guillin, Michèle Mathieu-Dramard, Zoltán Kutalik, Elisabeth Flori, Laurent Pasquier, André Reis, Noam D. Beckmann, Bertrand Isidor, Delphine Héron, Philippe Jonveaux, Sergi Villatoro Gomez, Ann Nordgren, José Manuel Fernández-Real, Florence Fellmann, Fernando Fernández-Aranda, Laurence Faivre, Dimitri J. Stavropoulos, Katrin Männik, Christian Gieger, Evald Saemundsen, Agnès Guichet, Jean-Marie Cuisset, R. Touraine, Laura Bernardini, Marie-Ange Delrue, Alessandra Renieri, Omar Gustafsson, Flore Zufferey, David A. Koolen, Massimiliano Rossi, Jacqueline Chrast, Ghislaine Plessis, Faida Walha, Joris Andrieux, Ellen van Binsbergen, Albert David, Catherine Vincent-Delorme, Cédric Le Caignec, Jean Chiesa, Ndeye Coumba Ndiaye, Geraldine Joly Helas, Damien Sanlaville, Anita Rauch, Louise Harewood, Mark I. McCarthy, Bridget A. Fernandez, Sébastien Jacquemont, Hreinn Stefansson, Anneke T. Vulto-van Silfhout, Zdenek Jaros, Matthias Nauck, Hans J. Grabe, Sonia Bouquillon, Mieke M. van Haelst, Andres Metspalu, Loyse Hippolyte, Patrick Callier, Bert B.A. de Vries, Francisco J. Tinahones, Nicole de Leeuw, Julia S. El-Sayed Moustafa, Claudine Rieubland, Kay D. MacDermot, Vittoria Disciglio, Henry Völzke, Caroline Rooryck, Bettina Blaumeiser, Danielle Martinet, Marie-Claude Addor, Bruno Delobel, Jacquemont, S, Reymond, A, Zufferey, F, Harewood, L, Walters, Rg, Kutalik, Z, Martinet, D, Shen, Y, Valsesia, A, Beckmann, Nd, Thorleifsson, G, Belfiore, M, Bouquillon, S, Campion, D, de Leeuw, N, de Vries, Bb, Esko, T, Fernandez, Ba, Fernández-Aranda, F, Fernández-Real, Jm, Gratacòs, M, Guilmatre, A, Hoyer, J, Jarvelin, Mr, Kooy, Rf, Kurg, A, Le Caignec, C, Männik, K, Platt, O, Sanlaville, D, Van Haelst, Mm, Villatoro Gomez, S, Walha, F, Wu, Bl, Yu, Y, Aboura, A, Addor, Mc, Alembik, Y, Antonarakis, Se, Arveiler, B, Barth, M, Bednarek, N, Béna, F, Bergmann, S, Beri, M, Bernardini, L, Blaumeiser, B, Bonneau, D, Bottani, A, Boute, O, Brunner, Hg, Cailley, D, Callier, P, Chiesa, J, Chrast, J, Coin, L, Coutton, C, Cuisset, Jm, Cuvellier, Jc, David, A, de Freminville, B, Delobel, B, Delrue, Ma, Demeer, B, Descamps, D, Didelot, G, Dieterich, K, Disciglio, V, Doco-Fenzy, M, Drunat, S, Duban-Bedu, B, Dubourg, C, El-Sayed Moustafa, J, Elliott, P, Faas, Bh, Faivre, L, Faudet, A, Fellmann, F, Ferrarini, A, Fisher, R, Flori, E, Forer, L, Gaillard, D, Gerard, M, Gieger, C, Gimelli, S, Gimelli, G, Grabe, Hj, Guichet, A, Guillin, O, Hartikainen, Al, Heron, D, Hippolyte, L, Holder, M, Homuth, G, Isidor, B, Jaillard, S, Jaros, Z, Jiménez-Murcia, S, Helas, Gj, Jonveaux, P, Kaksonen, S, Keren, B, Kloss-Brandstätter, A, Knoers, Nv, Koolen, Da, Kroisel, Pm, Kronenberg, F, Labalme, A, Landais, E, Lapi, E, Layet, V, Legallic, S, Leheup, B, Leube, B, Lewis, S, Lucas, J, Macdermot, Kd, Magnusson, P, Marshall, C, Mathieu-Dramard, M, Mccarthy, Mi, Meitinger, T, Mencarelli, Ma, Merla, G, Moerman, A, Mooser, V, Morice-Picard, F, Mucciolo, M, Nauck, M, Ndiaye, Nc, Nordgren, A, Pasquier, L, Petit, F, Pfundt, R, Plessis, G, Rajcan-Separovic, E, Ramelli, Gp, Rauch, A, Ravazzolo, R, Reis, A, Renieri, A, Richart, C, Ried, J, Rieubland, C, Roberts, W, Roetzer, Km, Rooryck, C, Rossi, M, Saemundsen, E, Satre, V, Schurmann, C, Sigurdsson, E, Stavropoulos, Dj, Stefansson, H, Tengström, C, Thorsteinsdóttir, U, Tinahones, Fj, Touraine, R, Vallée, L, van Binsbergen, E, Van der Aa, N, Vincent-Delorme, C, Visvikis-Siest, S, Vollenweider, P, Völzke, H, Vulto-van Silfhout, At, Waeber, G, Wallgren-Pettersson, C, Witwicki, Rm, Zwolinksi, S, Andrieux, J, Estivill, X, Gusella, Jf, Gustafsson, O, Metspalu, A, Scherer, Sw, Stefansson, K, Blakemore, Ai, Beckmann, J, Froguel, P, Faculteit Medische Wetenschappen/UMCG, Service de génétique médicale, Centre Hospitalier Universitaire Vaudois [Lausanne] (CHUV), Center for Integrative Genomics - Institute of Bioinformatics, Génopode (CIG), Swiss Institute of Bioinformatics [Lausanne] (SIB), Université de Lausanne = University of Lausanne (UNIL)-Université de Lausanne = University of Lausanne (UNIL), Department of Genomics of Common Disease, Imperial College London, Department of Medical Genetics, Université de Lausanne = University of Lausanne (UNIL), Laboratory Medicine, Boston Children's Hospital, Center for Human Genetic Research, Massachusetts General Hospital [Boston], Ludwig Institute for Cancer Research, deCODE Genetics, deCODE genetics [Reykjavik], Laboratoire de Génétique Médicale, Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Génétique médicale et fonctionnelle du cancer et des maladies neuropsychiatriques, Université de Rouen Normandie (UNIROUEN), Normandie Université (NU)-Normandie Université (NU)-Institut National de la Santé et de la Recherche Médicale (INSERM), Estonian Genome and Medicine, University of Tartu, Department of human genetics, Radboud University Medical Center [Nijmegen]-Nijmegen Centre for Molecular Life Sciences-Institute for Genetic and Metabolic Disorders, Institute of Molecular and Cell Biology, Disciplines of Genetics and Medicine, Memorial University of Newfoundland = Université Memorial de Terre-Neuve [St. John's, Canada] (MUN), Department of Psychiatry (IDIBELL), CIBERobn Fisiopatología de la Obesidad y Nutrición-University Hospital of Bellvitge, Section of Diabetes, Endocrinology and Nutrition, University Hospital of Girona-Biomedical Research Institute 'Dr Josep Trueta'-CIBERobn Fisiopatología de la Obesidad y Nutrición, Center for Genomic Regulation (CRG-UPF), CIBER de Epidemiología y Salud Pública (CIBERESP), Institute of Human Genetics [Erlangen, Allemagne], Friedrich-Alexander Universität Erlangen-Nürnberg (FAU), Department of child and adolescent health, University of Oulu-Institute of Health Sciences and Biocenter Oulu-National Institute for Health and Welfare [Helsinki], Antwerp University Hospital [Edegem] (UZA), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Service de cytogénétique constitutionnelle, Hospices Civils de Lyon (HCL)-CHU de Lyon-Centre Neuroscience et Recherche, University Medical Center [Utrecht], Institutes of Biomedical Science, Fudan University [Shanghai]-Children's Hospital, Shanghai Children's Medical Center, Département de génétique, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Service de cytogénétique, CHU Strasbourg-Hôpital de Hautepierre [Strasbourg], Génétique médicale, Hôpitaux Universitaires de Genève (HUG), Maladies Rares - Génétique et Métabolisme (MRGM), Université Bordeaux Segalen - Bordeaux 2-Hôpital Pellegrin-Service de Génétique Médicale du CHU de Bordeaux, Université de Bordeaux (UB)-CHU Bordeaux [Bordeaux]-Groupe hospitalier Pellegrin, 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), Université de Reims Champagne-Ardenne (URCA), Department of Molecular Genetics, Weizmann Institute of Science [Rehovot, Israël], Service de Génétique [CHRU Nancy], Centre Hospitalier Régional Universitaire de Nancy (CHRU Nancy), Mendel Laboratory, Istituto di Ricovero e Cura a Carattere Scientifico, Ospedale Casa Sollievo della Sofferenza [San Giovanni Rotondo] (IRCCS), Service de Génétique clinique, Laboratoire de cytogénétique (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Laboratoire de Cytogénétique, Centre Hospitalier Universitaire de Nîmes (CHU Nîmes), Département de génétique et procréation, Université Joseph Fourier - Grenoble 1 (UJF)-CHU Grenoble-faculté de médecine-pharmacie, AGeing and IMagery (AGIM), Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-École Pratique des Hautes Études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de biochimie et génétique moléculaire, CHU Grenoble, Service de Neuropédiatrie, Hôpital Roger Salengro [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Service de génétique, Centre Hospitalier Universitaire de Saint-Etienne [CHU Saint-Etienne] (CHU ST-E), Centre de Génétique Chromosomique, Hôpital Saint Vincent de Paul-Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), CHU Amiens-Picardie, Centre Hospitalier de Béthune (CH Béthune), GHT de l'Artois, Service de Génétique Clinique, Department of Biotechnology, Università degli Studi di Siena = University of Siena (UNISI)-Medical Genetics, Service de Génétique, Centre Hospitalier Universitaire de Reims (CHU Reims)-Hôpital Maison Blanche-IFR 53, Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA), Institut de Génétique et Développement de Rennes (IGDR), Université de Rennes (UR)-Centre National de la Recherche Scientifique (CNRS), Department of Epidemiology and Public Health, Department of Human Genetics [Nijmegen], Radboud University Medical Center [Nijmegen], Department of Experimental Cardiology, Academic Medical Center - Academisch Medisch Centrum [Amsterdam] (AMC), University of Amsterdam [Amsterdam] (UvA)-University of Amsterdam [Amsterdam] (UvA)-Heart Failure Research Center (HFRC), CHU Pitié-Salpêtrière [AP-HP], Institute of human genetics, International Centre for Life, Division of genetic epidemiology, HMNC Brain Health-Molecular and Clinical Pharmacology-Innsbruck Medical University = Medizinische Universität Innsbruck (IMU), Institute of Experimental Medicine, Czech Academy of Sciences [Prague] (CAS), Department of Obstetrics and Gynecology, University of Oulu-Institute of Clinical Medicine, Laboratorio di citogenetica, G. Gaslini Institute, Department of Psychiatry and Psychotherapy, Universität Greifswald - University of Greifswald, Interfaculty Institute for Genetics and Functional Genomics, Abteilung für Kinder und Jugendheilkunde, Landesklinikum Waldviertel Zwettl, Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), The Habilitation Unit of Folkhalsan, Medical University Graz, Medical Genetics Unit, Children's Hospital Anna Meyer, Unité de Cytogénétique et Génétique Médicale, Groupe Hospitalier du Havre-Hôpital Gustave Flaubert, Service de Médecine Infantile III et Génétique Clinique [CHRU Nancy], Institute of Human Genetics and Anthropology, Heinrich-Heine University Hospital Duesseldorf, Child and Family Research Institute-University of British Columbia (UBC), North West Thames Regional Genetics Service, Northwick Park & St Marks Hospital, Child and Adolescent Psychiatry, Landspitali University Hospital, Program in Genetics and Genomic Biology, Hospital for Sick Children-University of Toronto McLaughlin Centre, Oxford Centre for Diabetes, Endocrinology and Metabolism (OCDEM), University of Oxford, The Wellcome Trust Centre for Human Genetics [Oxford], Institute of Human Genetics, Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Helmholtz Zentrum München = German Research Center for Environmental Health, Genetics, GlaxoSmithKline R&D, GlaxoSmithKline, Institute of Clinical Chemistry and Laboratory Medicine, Génétique cardiovasculaire (GC), Université Henri Poincaré - Nancy 1 (UHP), Molecular Medicine and Surgery department, Karolinska Institutet [Stockholm], Service de Génétique [CHU Caen], Université de Caen Normandie (UNICAEN), Normandie Université (NU)-Normandie Université (NU)-CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Tumorothèque de Caen Basse-Normandie (TCBN), Department of Pathology, Division of pediatrics, Ospedale San Giovanni, Institute of Medical Genetics, Universität Zürich [Zürich] = University of Zurich (UZH), Department of pediatrics and CEBR, Università degli studi di Genova = University of Genoa (UniGe)-G. Gaslini Institute, Department of Internal Medicine, Universitat Rovira i Virgili-University Hospital Juan XXIII-Instituto Salud Carlos III-Ciber Fisiopatologia Obesidad y Nutricion (CIBEROBN), Division of Human Genetics, Department of Paediatrics, Inselspital-University of Bern, Autism Research Unit, The Hospital for sick children [Toronto] (SickKids)-University of Toronto, State Diagnostic, Counseling Center, University of Iceland [Reykjavik], Department of Pediatric Laboratory Medicine, Hospital for Sick Children, Genetic Services, Rinnekoti Research Foundation, Department of Endocrinology and Nutrition, Instituto Salud Carlos III-Clinic Hospital of Virgen de la Victoria-Ciber Fisiopatologia y Nutricion (CIBEROBN), Centre de Maladies Rares, Anomalies du Développement Nord de France-CH Arras - CHRU Lille, Institute for Community Medicine, Department of Medical and Clinical Genetics [Helsinki], Haartman Institute [Helsinki], Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, The Centre for Applied Genomics, Toronto, The Hospital for sick children [Toronto] (SickKids)-University of Toronto-Department of Molecular Genetics-McLaughlin Centre, Institut de biologie de Lille - UMS 3702 (IBL), Institut Pasteur de Lille, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), This work was supported by the Leenaards Foundation Prize (SJ, DM and AR), the Jérôme Lejeune Foundation (AR), the Telethon Action Suisse Foundation (AR), the Swiss National Science Foundation (AR, JSB, SB and SEA), a SNSF Sinergia grant (SJ, DM, SB, JSB and AR), the European Commission anEUploidy Integrated Project grant 037627 (AR, SB, XE, HGB and SEA), the Ludwig Institute for Cancer Research (AV), the Swiss Institute of Bioinformatics (SB, ZK), an Imperial College Dept of Medicine PhD studentship (JSe-SM), the Comprehensive Biomedical Research Centre, Imperial College Healthcare NHS Trust, and the National Institute for Health Research (PE), the Wellcome Trust and the Medical Research Council (AIFB and PF), the Instituto de Salud Carlos III (ISCIII)-FIS, the German Mental Retardation Network funded through a grant of the German Federal Ministry of Education and Research (NGFNplus 01GS08160) to A Reis and European Union-FEDER (PI081714, PS09/01778), SAF2008-02278 (XE, MG, FFA), the Belgian National Fund for Scientific Research - Flanders (NVA, RFK), the Dutch Organisation for Health Research and Development (ZONMW grant 917-86-319) and Hersenstichting Nederland (BBAdV), grant 81000346 from the Chinese National Natural Science Foundation (YGY), the Simons Foundation Autism Research Initiative, Autism Speaks and NIH grant GM061354 (JFG), and the OENB grant 13059 (AK-B). YS holds a Young Investigator Award from the Children's Tumor Foundation and Catalyst Award from Harvard Medical School, and BLW, a Fudan Scholar Research Award from Fudan University, a grant from Chinese National '973' project on Population and Health (2010CB529601) and a grant from Science and Technology Council of Shanghai (09JC1402400). ERS and SL, recipients of the Michael Smith Foundation for Health Research Scholar award, acknowledge the CIHR MOP 74502 operational grant. EGCUT received support from the EU Centre of Excellence in Genomics and FP7 grants #201413 and #245536, from Estonian Government SF0180142s08, SF0180026s09 and SF0180027s10 (AM, KM, AK). The Helmholtz Zentrum Munich and the State of Bavaria financed KORA, also supported by the German National Genome Research Network (NGFN-2 and NGFNPlus: 01GS0823), the German Federal Ministry of Education and Research (BMBF), and the Munich Center of Health Sciences (MC Health, LMUinnovativ). CIBEROBN and CIBERESP are initiatives of ISCIII (Spain). SWS holds the GlaxoSmithKline-Canadian Institutes of Health (CIHR) Chair in Genetics, Genomics at the University of Toronto and the Hospital for Sick Children and is supported by Genome Canada and the McLaughlin Centre. deCODE was funded in part by NIH grant MH071425 (KS), EU grant HEALTH-2007-2.2.1-10-223423 (Project PsychCNV) and EU grant IMI-JU-NewMeds., Centre de génomique intégrative, Université de Lausanne (UNIL), Swiss Institute of Bioinformatics (SIB), Swiss Institute of Bioinformatics, Memorial University of Newfoundland [St. John's], Friedrich Alexander University [Erlangen-Nürnberg], Service d'ORL et de Chirurgie Cervicofaciale, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Weizmann Institute of Science, IRCCS Casa Sollievo della Sofferenza Hospital, Centre Hospitalier Régional Universitaire de Nîmes (CHRU Nîmes), Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-École pratique des hautes études (EPHE)-Centre National de la Recherche Scientifique (CNRS), Hôpital Roger Salengro-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), CHU Saint-Etienne-Hôpital nord, Hôpital Saint Vincent de Paul-GHICL, Centre hospitalier de Béthune, Università degli Studi di Siena (UNISI)-Medical Genetics, Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-IFR140-Centre National de la Recherche Scientifique (CNRS), Department of Human Genetics, Radboud University Medical Centre, PO Box 9101, 6500 HB Nijmegen, Service de Génétique Cytogénétique et Embryologie [CHU Pitié-Salpêtrière], Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Pitié-Salpêtrière [APHP], Innsbruck Medical University [Austria] (IMU)-HMNC Brain Health-Molecular and Clinical Pharmacology, Czech Academy of Sciences [Prague] (ASCR), University of Oxford [Oxford], Technische Universität München [München] (TUM)-Helmholtz-Zentrum München (HZM)-German Research Center for Environmental Health, University of Zürich [Zürich] (UZH), Universita degli studi di Genova -G. Gaslini Institute, University of Toronto-The Hospital for Sick Children, University of Helsinki-University of Helsinki-Faculty of Medecine [Helsinki], University of Helsinki-University of Helsinki, University of Toronto-The Hospital for Sick Children-Department of Molecular Genetics-McLaughlin Centre, Institut de biologie de Lille - IBL (IBLI), Université de Lille, Sciences et Technologies-Institut Pasteur de Lille, Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Université de Lille, Droit et Santé-Centre National de la Recherche Scientifique (CNRS), Human genetics, Amsterdam Neuroscience - Complex Trait Genetics, Amsterdam Reproduction & Development (AR&D), De Villemeur, Hervé, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU)-Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), Université Pierre Mendès France - Grenoble 2 (UPMF)-Université Joseph Fourier - Grenoble 1 (UJF)-École pratique des hautes études (EPHE), Service of Medical Genetics, Centre Hospitalier Universitaire Vaudois, 1011 Lausanne, Switzerland., Other departments, Reymond, Alexandre, Antonarakis, Stylianos, Sloan Bena, Frédérique, Bottani, Armand, Callier, Patrick, Gimelli, Stefania, Merla, Giuseppe, Vollenweider, Peter, Université de Lausanne (UNIL)-Université de Lausanne (UNIL), Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Joseph Fourier - Grenoble 1 (UJF)-Université Pierre Mendès France - Grenoble 2 (UPMF), Centre National de la Recherche Scientifique (CNRS)-Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES), Technische Universität Munchen - Université Technique de Munich [Munich, Allemagne] (TUM)-Helmholtz-Zentrum München (HZM)-German Research Center for Environmental Health, CHU Caen, Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Normandie Université (NU)-Tumorothèque de Caen Basse-Normandie (TCBN)-Université de Caen Normandie (UNICAEN), University of Toronto-The Hospital for sick children [Toronto] (SickKids)-Department of Molecular Genetics-McLaughlin Centre, Université de Lille-Institut Pasteur de Lille, and Réseau International des Instituts Pasteur (RIIP)-Réseau International des Instituts Pasteur (RIIP)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Male ,Aging ,Transcription, Genetic ,Adolescent ,Adult ,Aged ,Body Height ,Body Mass Index ,Case-Control Studies ,Child ,Child, Preschool ,Chromosomes, Human, Pair 16 ,Cohort Studies ,Comparative Genomic Hybridization ,Developmental Disabilities ,Energy Metabolism ,Europe ,Female ,Gene Dosage ,Gene Duplication ,Gene Expression Profiling ,Genetic Predisposition to Disease ,Genome-Wide Association Study ,Head ,Heterozygote ,Humans ,Infant ,Infant, Newborn ,Mental Disorders ,Middle Aged ,Mutation ,North America ,Obesity ,Phenotype ,RNA, Messenger ,Sequence Deletion ,Thinness ,Young Adult ,Physiology ,RNA, Messenger/analysis/genetics ,Genome-wide association study ,HIDDEN-MARKOV MODEL ,0302 clinical medicine ,Sequence Deletion/genetics ,ddc:576.5 ,0303 health sciences ,education.field_of_study ,Body Height/genetics ,Genetic Predisposition to Disease/genetics ,[SDV.MHEP.EM]Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism ,3. Good health ,population characteristics ,Chromosomes, Human, Pair 16/genetics ,Human ,Locus (genetics) ,Gene Duplication/genetics ,Article ,03 medical and health sciences ,Genetic ,education ,SNP GENOTYPING DATA ,Thinness/genetics ,[SDV.GEN]Life Sciences [q-bio]/Genetics ,Pair 16 ,Case-control study ,nutritional and metabolic diseases ,social sciences ,medicine.disease ,DEPENDENT PROBE AMPLIFICATION ,Human medicine ,Body mass index ,030217 neurology & neurosurgery ,Messenger ,Obesity/genetics ,FAILURE-TO-THRIVE ,[SDV.GEN] Life Sciences [q-bio]/Genetics ,Head/anatomy & histology ,METABOLIC SYNDROME ,[SDV.MHEP.EM] Life Sciences [q-bio]/Human health and pathology/Endocrinology and metabolism ,2. Zero hunger ,Genetics ,Multidisciplinary ,TIME QUANTITATIVE PCR ,Failure to thrive ,medicine.symptom ,Underweight ,Transcription ,geographic locations ,Mutation/genetics ,Population ,Biology ,Chromosomes ,150 000 MR Techniques in Brain Function ,medicine ,Preschool ,030304 developmental biology ,COPY NUMBER VARIATION ,Mental Disorders/genetics ,Energy Metabolism/genetics ,RELATIVE QUANTIFICATION ,Gene Dosage/genetics ,Newborn ,BODY-MASS INDEX ,CIRCULAR BINARY SEGMENTATION ,RNA ,Genetics and epigenetic pathways of disease Genomic disorders and inherited multi-system disorders [NCMLS 6] ,human activities ,Developmental Disabilities/genetics - Abstract
To access publisher full text version of this article. Please click on the hyperlink in Additional Links field. Both obesity and being underweight have been associated with increased mortality. Underweight, defined as a body mass index (BMI) ≤ 18.5 kg per m(2) in adults and ≤ -2 standard deviations from the mean in children, is the main sign of a series of heterogeneous clinical conditions including failure to thrive, feeding and eating disorder and/or anorexia nervosa. In contrast to obesity, few genetic variants underlying these clinical conditions have been reported. We previously showed that hemizygosity of a ∼600-kilobase (kb) region on the short arm of chromosome 16 causes a highly penetrant form of obesity that is often associated with hyperphagia and intellectual disabilities. Here we show that the corresponding reciprocal duplication is associated with being underweight. We identified 138 duplication carriers (including 132 novel cases and 108 unrelated carriers) from individuals clinically referred for developmental or intellectual disabilities (DD/ID) or psychiatric disorders, or recruited from population-based cohorts. These carriers show significantly reduced postnatal weight and BMI. Half of the boys younger than five years are underweight with a probable diagnosis of failure to thrive, whereas adult duplication carriers have an 8.3-fold increased risk of being clinically underweight. We observe a trend towards increased severity in males, as well as a depletion of male carriers among non-medically ascertained cases. These features are associated with an unusually high frequency of selective and restrictive eating behaviours and a significant reduction in head circumference. Each of the observed phenotypes is the converse of one reported in carriers of deletions at this locus. The phenotypes correlate with changes in transcript levels for genes mapping within the duplication but not in flanking regions. The reciprocal impact of these 16p11.2 copy-number variants indicates that severe obesity and being underweight could have mirror aetiologies, possibly through contrasting effects on energy balance. Leenaards Foundation Jerome Lejeune Foundation Telethon Action Suisse Foundation Swiss National Science Foundation European Commission 037627 QLG1-CT-2000-01643 Ludwig Institute for Cancer Research Swiss Institute of Bioinformatics Imperial College Department of Medicine Comprehensive Biomedical Research Centre Imperial College Healthcare NHS Trust National Institute for Health Research Wellcome Trust Medical Research Council Instituto de Salud Carlos III (ISCIII)-FIS German Mental Retardation Network German Federal Ministry of Education and Research NGFNplus 01GS08160 European Union PI081714 PS09/01778 201413 245536 info:eu-repo/grantAgreement/EC/FP7/223423 Belgian National Fund for Scientific Research, Flanders Dutch Organisation for Health Research and Development (ZON-MW) 917-86-319 Hersenstichting Nederland (B.B.A.d.V.) Chinese National Natural Science Foundation 81000346 Simons Foundation Autism Research Initiative Autism Speaks NIH GM061354 MH071425 Oesterreichische Nationalbank (OENB) 13059 Children's Tumor Foundation Harvard Medical School Fudan University Chinese National '973' project on Population and Health 2010CB529601 Science and Technology Council of Shanghai 09JC1402400 Michael Smith Foundation for Health CIHR MOP 74502 Estonian Government SF0180142s08 SF0180026s09 SF0180027s10 Helmholtz Zentrum Munich State of Bavaria German National Genome Research Network 01GS0823 German Federal Ministry of Education and Research (BMBF) Munich Center of Health Sciences (MC Health, LMUinnovativ) Genome Canada McLaughlin Centre Academy of Finland 104781 120315 129269 1114194 University Hospital Oulu Biocenter University of Oulu, Finland 75617 NHLBI 5R01HL087679-02 1RL1MH083268-01 NIH/NIMH 5R01MH63706:02 ENGAGE project Medical Research Council, UK G0500539 G0600705 Academy of Finland Biocentrum Helsinki SAF2008-02278 HEALTH-F4-2007-201413
- Published
- 2011
20. MARK2 variants cause autism spectrum disorder via the downregulation of WNT/β-catenin signaling pathway.
- Author
-
Gong M, Li J, Qin Z, Machado Bressan Wilke MV, Liu Y, Li Q, Liu H, Liang C, Morales-Rosado JA, Cohen ASA, Hughes SS, Sullivan BR, Waddell V, van den Boogaard MH, van Jaarsveld RH, van Binsbergen E, van Gassen KL, Wang T, Hiatt SM, Amaral MD, Kelley WV, Zhao J, Feng W, Ren C, Yu Y, Boczek NJ, Ferber MJ, Lahner C, Elliott S, Ruan Y, Mignot C, Keren B, Xie H, Wang X, Popp B, Zweier C, Piard J, Coubes C, Mau-Them FT, Safraou H, Innes AM, Gauthier J, Michaud JL, Koboldt DC, Sylvie O, Willems M, Tan WH, Cogne B, Rieubland C, Braun D, McLean SD, Platzer K, Zacher P, Oppermann H, Evenepoel L, Blanc P, El Khattabi L, Haque N, Dsouza NR, Zimmermann MT, Urrutia R, Klee EW, Shen Y, Du H, Rappaport L, Liu CM, and Chen X
- Abstract
Microtubule affinity-regulating kinase 2 (MARK2) contributes to establishing neuronal polarity and developing dendritic spines. Although large-scale sequencing studies have associated MARK2 variants with autism spectrum disorder (ASD), the clinical features and variant spectrum in affected individuals with MARK2 variants, early developmental phenotypes in mutant human neurons, and the pathogenic mechanism underlying effects on neuronal development have remained unclear. Here, we report 31 individuals with MARK2 variants and presenting with ASD, other neurodevelopmental disorders, and distinctive facial features. Loss-of-function (LoF) variants predominate (81%) in affected individuals, while computational analysis and in vitro expression assay of missense variants supported the effect of MARK2 loss. Using proband-derived and CRISPR-engineered isogenic induced pluripotent stem cells (iPSCs), we show that MARK2 loss leads to early neuronal developmental and functional deficits, including anomalous polarity and dis-organization in neural rosettes, as well as imbalanced proliferation and differentiation in neural progenitor cells (NPCs). Mark2
+/- mice showed abnormal cortical formation and partition and ASD-like behavior. Through the use of RNA sequencing (RNA-seq) and lithium treatment, we link MARK2 loss to downregulation of the WNT/β-catenin signaling pathway and identify lithium as a potential drug for treating MARK2-associated ASD., Competing Interests: Declaration of interests The authors declare no competing interests., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)- Published
- 2024
- Full Text
- View/download PDF
21. De novo variants predicting haploinsufficiency for DIP2C are associated with expressive speech delay.
- Author
-
Ha T, Morgan A, Bartos MN, Beatty K, Cogné B, Braun D, Gerber CB, Gaspar H, Kopps AM, Rieubland C, Hurst ACE, Amor DJ, Nizon M, Pasquier L, Pfundt R, Reis A, Siu VM, Tessarech M, Thompson ML, Vincent M, de Vries BBA, Walsh MB, Wechsler SB, Zweier C, Schnur RE, Guillen Sacoto MJ, Margot H, Masotto B, Palafoll MIV, Nawaz U, Voineagu I, and Slavotinek A
- Subjects
- Humans, Male, Female, Child, Preschool, Child, Infant, Phenotype, Genetic Predisposition to Disease, Haploinsufficiency genetics, Language Development Disorders genetics, Language Development Disorders pathology, Language Development Disorders physiopathology
- Abstract
The disconnected (disco)-interacting protein 2 (DIP2) gene was first identified in D. melanogaster and contains a DNA methyltransferase-associated protein 1 (DMAP1) binding domain, Acyl-CoA synthetase domain and AMP-binding sites. DIP2 regulates axonal bifurcation of the mushroom body neurons in D. melanogaster and is required for axonal regeneration in the neurons of C. elegans. The DIP2 homologues in vertebrates, Disco-interacting protein 2 homolog A (DIP2A), Disco-interacting protein 2 homolog B (DIP2B), and Disco-interacting protein 2 homolog C (DIP2C), are highly conserved and expressed widely in the central nervous system. Although there is evidence that DIP2C plays a role in cognition, reports of pathogenic variants in these genes are rare and their significance is uncertain. We present 23 individuals with heterozygous DIP2C variants, all manifesting developmental delays that primarily affect expressive language and speech articulation. Eight patients had de novo variants predicting loss-of-function in the DIP2C gene, two patients had de novo missense variants, three had paternally inherited loss of function variants and six had maternally inherited loss-of-function variants, while inheritance was unknown for four variants. Four patients had cardiac defects (hypertrophic cardiomyopathy, atrial septal defects, and bicuspid aortic valve). Minor facial anomalies were inconsistent but included a high anterior hairline with a long forehead, broad nasal tip, and ear anomalies. Brainspan analysis showed elevated DIP2C expression in the human neocortex at 10-24 weeks after conception. With the cases presented herein, we provide phenotypic and genotypic data supporting the association between loss-of-function variants in DIP2C with a neurocognitive phenotype., (© 2024 The Authors. American Journal of Medical Genetics Part A published by Wiley Periodicals LLC.)
- Published
- 2024
- Full Text
- View/download PDF
22. Enhancing fetal outcomes in GCK-MODY pregnancies: a precision medicine approach via non-invasive prenatal GCK mutation detection.
- Author
-
Schwitzgebel VM, Blouin JL, Dehos B, Köhler-Ballan B, Puder JJ, Rieubland C, Triantafyllidou M, Zanchi A, Abramowicz M, and Nouspikel T
- Abstract
Background: Mutations in the GCK gene cause Maturity Onset Diabetes of the Young (GCK-MODY) by impairing glucose-sensing in pancreatic beta cells. During pregnancy, managing this type of diabetes varies based on fetal genotype. Fetuses carrying a GCK mutation can derive benefit from moderate maternal hyperglycemia, stimulating insulin secretion in fetal islets, whereas this may cause macrosomia in wild-type fetuses. Modulating maternal glycemia can thus be viewed as a form of personalized prenatal therapy, highly beneficial but not justifying the risk of invasive testing. We therefore developed a monogenic non-invasive prenatal diagnostic (NIPD-M) test to reliably detect the transmission of a known maternal GCK mutation to the fetus., Methods: A small amount of fetal circulating cell-free DNA is present in maternal plasma but cannot be distinguished from maternal cell-free DNA. Determining transmission of a maternal mutation to the fetus thus implies sequencing adjacent polymorphisms to determine the balance of maternal haplotypes, the transmitted haplotype being over-represented in maternal plasma., Results: Here we present a series of such tests in which fetal genotype was successfully determined and show that it can be used to guide therapeutic decisions during pregnancy and improve the outcome for the offspring. We discuss several potential hurdles inherent to the technique, and strategies to overcome these., Conclusion: Our NIPD-M test allows reliable determination of the presence of a maternal GCK mutation in the fetus, thereby allowing personalized in utero therapy by modulating maternal glycemia, without incurring the risk of miscarriage inherent to invasive testing., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2024 Schwitzgebel, Blouin, Dehos, Köhler-Ballan, Puder, Rieubland, Triantafyllidou, Zanchi, Abramowicz and Nouspikel.)
- Published
- 2024
- Full Text
- View/download PDF
23. Expanding Genotype/Phenotype Correlation in 2p11.2-p12 Microdeletion Syndrome.
- Author
-
Ferrario A, Aliu N, Rieubland C, Vuilleumier S, Grabe HM, and Escher P
- Subjects
- Male, Humans, Chromosome Deletion, Comparative Genomic Hybridization, Phenotype, Genotype, Intellectual Disability genetics, Intellectual Disability diagnosis
- Abstract
Chromosomal abnormalities on the short arm of chromosome 2 in the region p11.2 have been associated with developmental delay, intellectual disability, facial anomalies, abnormal ears, skeletal and genital malformations. Here we describe a patient with a de novo interstitial heterozygous microdeletion on the short arm of chromosome 2 in the region p11.2-p12. He presents with facial dysmorphism characterized by a broad and low root of the nose and low-set protruding ears. Clinical examinations during follow-up visits revealed congenital pendular nystagmus, decreased visual acuity and psychomotor development disorder including intellectual disability. The heterozygous 5 Mb-microdeletion was characterized by an array CGH (Comparative Genomic Hybridization) analysis. In the past two decades, nine patients with microdeletions in this region have been identified by array CGH analysis and were reported in the literature. All these patients show psychomotor development disorder and outer and/or inner ear anomalies. In addition, most of the patients have mild to severe intellectual disability and show facial malformations. We reviewed the literature on PubMed and OMIM using the gene/loci names as search terms in an attempt to identify correlations between genes located within the heterozygous microdeletion and the clinical phenotype of the patient, in order to define a recognizable phenotype for the 2p11.2p12 microdeletion syndrome. We discuss additional symptoms that are not systematically present in all patients and contribute to a heterogeneous clinical presentation of this microdeletion syndrome.
- Published
- 2023
- Full Text
- View/download PDF
24. Clinical and genetic analysis further delineates the phenotypic spectrum of ALDH1A3-related anophthalmia and microphthalmia.
- Author
-
Kesim Y, Ceroni F, Damián A, Blanco-Kelly F, Ayuso C, Williamson K, Paquis-Flucklinger V, Bax DA, Plaisancié J, Rieubland C, Chamlal M, Cortón M, Chassaing N, Calvas P, and Ragge NK
- Subjects
- Humans, Mutation, Aldehyde Oxidoreductases genetics, Phenotype, Microphthalmos genetics, Anophthalmos genetics, Eye Abnormalities
- Abstract
Biallelic pathogenic variants in ALDH1A3 are responsible for approximately 11% of recessively inherited cases of severe developmental eye anomalies. Some individuals can display variable neurodevelopmental features, but the relationship to the ALDH1A3 variants remains unclear. Here, we describe seven unrelated families with biallelic pathogenic ALDH1A3 variants: four compound heterozygous and three homozygous. All affected individuals had bilateral anophthalmia/microphthalmia (A/M), three with additional intellectual or developmental delay, one with autism and seizures and three with facial dysmorphic features. This study confirms that individuals with biallelic pathogenic ALDH1A3 variants consistently manifest A/M, but additionally display neurodevelopmental features with significant intra- and interfamilial variability. Furthermore, we describe the first case with cataract and highlight the importance of screening ALDH1A3 variants in nonconsanguineous families with A/M., (© 2023. The Author(s).)
- Published
- 2023
- Full Text
- View/download PDF
25. Correction: Clinical and genetic analysis further delineates the phenotypic spectrum of ALDH1A3-related anophthalmia and microphthalmia.
- Author
-
Kesim Y, Ceroni F, Damián A, Blanco-Kelly F, Ayuso C, Williamson K, Paquis-Flucklinger V, Bax DA, Plaisancié J, Rieubland C, Chamlal M, Cortón M, Chassaing N, Calvas P, and Ragge NK
- Published
- 2023
- Full Text
- View/download PDF
26. The clinical and genetic spectrum of autosomal-recessive TOR1A-related disorders.
- Author
-
Saffari A, Lau T, Tajsharghi H, Karimiani EG, Kariminejad A, Efthymiou S, Zifarelli G, Sultan T, Toosi MB, Sedighzadeh S, Siu VM, Ortigoza-Escobar JD, AlShamsi AM, Ibrahim S, Al-Sannaa NA, Al-Hertani W, Sandra W, Tarnopolsky M, Alavi S, Li C, Day-Salvatore DL, Martínez-González MJ, Levandoski KM, Bedoukian E, Madan-Khetarpal S, Idleburg MJ, Menezes MJ, Siddharth A, Platzer K, Oppermann H, Smitka M, Collins F, Lek M, Shahrooei M, Ghavideldarestani M, Herman I, Rendu J, Faure J, Baker J, Bhambhani V, Calderwood L, Akhondian J, Imannezhad S, Mirzadeh HS, Hashemi N, Doosti M, Safi M, Ahangari N, Torbati PN, Abedini S, Salpietro V, Gulec EY, Eshaghian S, Ghazavi M, Pascher MT, Vogel M, Abicht A, Moutton S, Bruel AL, Rieubland C, Gallati S, Strom TM, Lochmüller H, Mohammadi MH, Alvi JR, Zackai EH, Keena BA, Skraban CM, Berger SI, Andrew EH, Rahimian E, Morrow MM, Wentzensen IM, Millan F, Henderson LB, Dafsari HS, Jungbluth H, Gomez-Ospina N, McRae A, Peter M, Veltra D, Marinakis NM, Sofocleous C, Ashrafzadeh F, Pehlivan D, Lemke JR, Melki J, Benezit A, Bauer P, Weis D, Lupski JR, Senderek J, Christodoulou J, Chung WK, Goodchild R, Offiah AC, Moreno-De-Luca A, Suri M, Ebrahimi-Fakhari D, Houlden H, and Maroofian R
- Subjects
- Male, Humans, Cross-Sectional Studies, Mutation genetics, Phenotype, Molecular Chaperones genetics, Dystonia genetics, Dystonic Disorders genetics, Nervous System Malformations
- Abstract
In the field of rare diseases, progress in molecular diagnostics led to the recognition that variants linked to autosomal-dominant neurodegenerative diseases of later onset can, in the context of biallelic inheritance, cause devastating neurodevelopmental disorders and infantile or childhood-onset neurodegeneration. TOR1A-associated arthrogryposis multiplex congenita 5 (AMC5) is a rare neurodevelopmental disorder arising from biallelic variants in TOR1A, a gene that in the heterozygous state is associated with torsion dystonia-1 (DYT1 or DYT-TOR1A), an early-onset dystonia with reduced penetrance. While 15 individuals with AMC5-TOR1A have been reported (less than 10 in detail), a systematic investigation of the full disease-associated spectrum has not been conducted. Here, we assess the clinical, radiological and molecular characteristics of 57 individuals from 40 families with biallelic variants in TOR1A. Median age at last follow-up was 3 years (0-24 years). Most individuals presented with severe congenital flexion contractures (95%) and variable developmental delay (79%). Motor symptoms were reported in 79% and included lower limb spasticity and pyramidal signs, as well as gait disturbances. Facial dysmorphism was an integral part of the phenotype, with key features being a broad/full nasal tip, narrowing of the forehead and full cheeks. Analysis of disease-associated manifestations delineated a phenotypic spectrum ranging from normal cognition and mild gait disturbance to congenital arthrogryposis, global developmental delay, intellectual disability, absent speech and inability to walk. In a subset, the presentation was consistent with foetal akinesia deformation sequence with severe intrauterine abnormalities. Survival was 71%, with higher mortality in males. Death occurred at a median age of 1.2 months (1 week-9 years), due to respiratory failure, cardiac arrest or sepsis. Analysis of brain MRI studies identified non-specific neuroimaging features, including a hypoplastic corpus callosum (72%), foci of signal abnormality in the subcortical and periventricular white matter (55%), diffuse white matter volume loss (45%), mega cisterna magna (36%) and arachnoid cysts (27%). The molecular spectrum included 22 distinct variants, defining a mutational hotspot in the C-terminal domain of the Torsin-1A protein. Genotype-phenotype analysis revealed an association of missense variants in the 3-helix bundle domain to an attenuated phenotype, while missense variants near the Walker A/B motif as well as biallelic truncating variants were linked to early death. In summary, this systematic cross-sectional analysis of a large cohort of individuals with biallelic TOR1A variants across a wide age-range delineates the clinical and genetic spectrum of TOR1A-related autosomal-recessive disease and highlights potential predictors for disease severity and survival., (© The Author(s) 2023. Published by Oxford University Press on behalf of the Guarantors of Brain.)
- Published
- 2023
- Full Text
- View/download PDF
27. Gain and loss of function variants in EZH1 disrupt neurogenesis and cause dominant and recessive neurodevelopmental disorders.
- Author
-
Gracia-Diaz C, Zhou Y, Yang Q, Maroofian R, Espana-Bonilla P, Lee CH, Zhang S, Padilla N, Fueyo R, Waxman EA, Lei S, Otrimski G, Li D, Sheppard SE, Mark P, Harr MH, Hakonarson H, Rodan L, Jackson A, Vasudevan P, Powel C, Mohammed S, Maddirevula S, Alzaidan H, Faqeih EA, Efthymiou S, Turchetti V, Rahman F, Maqbool S, Salpietro V, Ibrahim SH, di Rosa G, Houlden H, Alharbi MN, Al-Sannaa NA, Bauer P, Zifarelli G, Estaras C, Hurst ACE, Thompson ML, Chassevent A, Smith-Hicks CL, de la Cruz X, Holtz AM, Elloumi HZ, Hajianpour MJ, Rieubland C, Braun D, Banka S, French DL, Heller EA, Saade M, Song H, Ming GL, Alkuraya FS, Agrawal PB, Reinberg D, Bhoj EJ, Martínez-Balbás MA, and Akizu N
- Subjects
- Animals, Chick Embryo, Humans, Cell Differentiation genetics, Cell Nucleus, Chromatin genetics, Methyltransferases, Neurodevelopmental Disorders genetics, Neurogenesis genetics, Polycomb Repressive Complex 2 genetics
- Abstract
Genetic variants in chromatin regulators are frequently found in neurodevelopmental disorders, but their effect in disease etiology is rarely determined. Here, we uncover and functionally define pathogenic variants in the chromatin modifier EZH1 as the cause of dominant and recessive neurodevelopmental disorders in 19 individuals. EZH1 encodes one of the two alternative histone H3 lysine 27 methyltransferases of the PRC2 complex. Unlike the other PRC2 subunits, which are involved in cancers and developmental syndromes, the implication of EZH1 in human development and disease is largely unknown. Using cellular and biochemical studies, we demonstrate that recessive variants impair EZH1 expression causing loss of function effects, while dominant variants are missense mutations that affect evolutionarily conserved aminoacids, likely impacting EZH1 structure or function. Accordingly, we found increased methyltransferase activity leading to gain of function of two EZH1 missense variants. Furthermore, we show that EZH1 is necessary and sufficient for differentiation of neural progenitor cells in the developing chick embryo neural tube. Finally, using human pluripotent stem cell-derived neural cultures and forebrain organoids, we demonstrate that EZH1 variants perturb cortical neuron differentiation. Overall, our work reveals a critical role of EZH1 in neurogenesis regulation and provides molecular diagnosis for previously undefined neurodevelopmental disorders., (© 2023. The Author(s).)
- Published
- 2023
- Full Text
- View/download PDF
28. Activating RAC1 variants in the switch II region cause a developmental syndrome and alter neuronal morphology.
- Author
-
Banka S, Bennington A, Baker MJ, Rijckmans E, Clemente GD, Ansor NM, Sito H, Prasad P, Anyane-Yeboa K, Badalato L, Dimitrov B, Fitzpatrick D, Hurst ACE, Jansen AC, Kelly MA, Krantz I, Rieubland C, Ross M, Rudy NL, Sanz J, Stouffs K, Xu ZL, Malliri A, Kazanietz MG, and Millard TH
- Subjects
- Animals, Mice, Neurons, NIH 3T3 Cells, Signal Transduction genetics, Megalencephaly genetics, Neurodevelopmental Disorders genetics, rac1 GTP-Binding Protein
- Abstract
RAC1 is a highly conserved Rho GTPase critical for many cellular and developmental processes. De novo missense RAC1 variants cause a highly variable neurodevelopmental disorder. Some of these variants have previously been shown to have a dominant negative effect. Most previously reported patients with this disorder have either severe microcephaly or severe macrocephaly. Here, we describe eight patients with pathogenic missense RAC1 variants affecting residues between Q61 and R68 within the switch II region of RAC1. These patients display variable combinations of developmental delay, intellectual disability, brain anomalies such as polymicrogyria and cardiovascular defects with normocephaly or relatively milder micro- or macrocephaly. Pulldown assays, NIH3T3 fibroblast spreading assays and staining for activated PAK1/2/3 and WAVE2 suggest that these variants increase RAC1 activity and over-activate downstream signalling targets. Axons of neurons isolated from Drosophila embryos expressing the most common of the activating variants are significantly shorter, with an increased density of filopodial protrusions. In vivo, these embryos exhibit frequent defects in axonal organization. Class IV dendritic arborization neurons expressing this variant exhibit a significant reduction in the total area of the dendritic arbour, increased branching and failure of self-avoidance. RNAi knock down of the WAVE regulatory complex component Cyfip significantly rescues these morphological defects. These results establish that activating substitutions affecting residues Q61-R68 within the switch II region of RAC1 cause a developmental syndrome. Our findings reveal that these variants cause altered downstream signalling, resulting in abnormal neuronal morphology and reveal the WAVE regulatory complex/Arp2/3 pathway as a possible therapeutic target for activating RAC1 variants. These insights also have the potential to inform the mechanism and therapy for other disorders caused by variants in genes encoding other Rho GTPases, their regulators and downstream effectors., (© The Author(s) 2022. Published by Oxford University Press on behalf of the Guarantors of Brain.)
- Published
- 2022
- Full Text
- View/download PDF
29. Compound-heterozygous GRIN2A null variants associated with severe developmental and epileptic encephalopathy.
- Author
-
Strehlow V, Rieubland C, Gallati S, Kim S, Myers SJ, Peterson V, Ramsey AJ, Teuscher DD, Traynelis SF, and Lemke JR
- Subjects
- Animals, Child, Female, Humans, Mice, Phenotype, Receptors, N-Methyl-D-Aspartate genetics, Epilepsy, Generalized, Mental Disorders
- Abstract
We report on an 8-year-old girl with severe developmental and epileptic encephalopathy due to the compound heterozygous null variants p.(Gln661*) and p.(Leu830Profs*2) in GRIN2A resulting in a knockout of the human GluN2A subunit of the N-methyl-D-aspartate receptor. Both parents had less severe GRIN2A-related phenotypes and were heterozygous carriers of the respective null variant. Functional investigations of both variants suggested a loss-of-function effect. This is the first description of an autosomal recessive, biallelic type of GRIN2A-related disorder. Nonetheless, there are marked parallels to two previously published families with severe epileptic encephalopathy due to homozygous null variants in GRIN1 as well as various knockout animal models. Compared to heterozygous null variants, biallelic knockout of either GluN1 or GluN2A is associated with markedly more severe phenotypes in both humans and mice. Furthermore, recent findings enable a potential precision medicine approach targeting GRIN-related disorders due to null variants., (© 2022 The Authors. Epilepsia published by Wiley Periodicals LLC on behalf of International League Against Epilepsy.)
- Published
- 2022
- Full Text
- View/download PDF
30. Clinical delineation, sex differences, and genotype-phenotype correlation in pathogenic KDM6A variants causing X-linked Kabuki syndrome type 2.
- Author
-
Faundes V, Goh S, Akilapa R, Bezuidenhout H, Bjornsson HT, Bradley L, Brady AF, Brischoux-Boucher E, Brunner H, Bulk S, Canham N, Cody D, Dentici ML, Digilio MC, Elmslie F, Fry AE, Gill H, Hurst J, Johnson D, Julia S, Lachlan K, Lebel RR, Byler M, Gershon E, Lemire E, Gnazzo M, Lepri FR, Marchese A, McEntagart M, McGaughran J, Mizuno S, Okamoto N, Rieubland C, Rodgers J, Sasaki E, Scalais E, Scurr I, Suri M, van der Burgt I, Matsumoto N, Miyake N, Benoit V, Lederer D, and Banka S
- Subjects
- Abnormalities, Multiple, DNA-Binding Proteins genetics, Face abnormalities, Female, Genetic Association Studies, Hematologic Diseases, Humans, Infant, Newborn, Male, Neoplasm Proteins genetics, Phenotype, Vestibular Diseases, Histone Demethylases genetics, Intellectual Disability genetics, Sex Characteristics
- Abstract
Purpose: The variant spectrum and the phenotype of X-linked Kabuki syndrome type 2 (KS2) are poorly understood., Methods: Genetic and clinical details of new and published individuals with pathogenic KDM6A variants were compiled and analyzed., Results: Sixty-one distinct pathogenic KDM6A variants (50 truncating, 11 missense) from 80 patients (34 males, 46 females) were identified. Missense variants clustered in the TRP 2, 3, 7 and Jmj-C domains. Truncating variants were significantly more likely to be de novo. Thirteen individuals had maternally inherited variants and one had a paternally inherited variant. Neonatal feeding difficulties, hypoglycemia, postnatal growth retardation, poor weight gain, motor delay, intellectual disability (ID), microcephaly, congenital heart anomalies, palate defects, renal malformations, strabismus, hearing loss, recurrent infections, hyperinsulinism, seizures, joint hypermobility, and gastroesophageal reflux were frequent clinical findings. Facial features of over a third of patients were not typical for KS. Males were significantly more likely to be born prematurely, have shorter stature, and severe developmental delay/ID., Conclusion: We expand the KDM6A variant spectrum and delineate the KS2 phenotype. We demonstrate that the variability of the KS2 phenotypic depends on sex and the variant type. We also highlight the overlaps and differences between the phenotypes of KS2 and KS1.
- Published
- 2021
- Full Text
- View/download PDF
31. Delineation of phenotypes and genotypes related to cohesin structural protein RAD21.
- Author
-
Krab LC, Marcos-Alcalde I, Assaf M, Balasubramanian M, Andersen JB, Bisgaard AM, Fitzpatrick DR, Gudmundsson S, Huisman SA, Kalayci T, Maas SM, Martinez F, McKee S, Menke LA, Mulder PA, Murch OD, Parker M, Pie J, Ramos FJ, Rieubland C, Rosenfeld Mokry JA, Scarano E, Shinawi M, Gómez-Puertas P, Tümer Z, and Hennekam RC
- Subjects
- Adolescent, Adult, Cell Cycle Proteins chemistry, Child, Child, Preschool, DNA-Binding Proteins chemistry, Female, Genetic Association Studies, Genotype, Humans, Infant, Infant, Newborn, Male, Middle Aged, Molecular Dynamics Simulation, Phenotype, Protein Conformation, Young Adult, Cell Cycle Proteins genetics, Cell Cycle Proteins metabolism, Chromosome Deletion, DNA-Binding Proteins genetics, DNA-Binding Proteins metabolism, De Lange Syndrome genetics, De Lange Syndrome pathology, Mutation
- Abstract
RAD21 encodes a key component of the cohesin complex, and variants in RAD21 have been associated with Cornelia de Lange Syndrome (CdLS). Limited information on phenotypes attributable to RAD21 variants and genotype-phenotype relationships is currently published. We gathered a series of 49 individuals from 33 families with RAD21 alterations [24 different intragenic sequence variants (2 recurrent), 7 unique microdeletions], including 24 hitherto unpublished cases. We evaluated consequences of 12 intragenic variants by protein modelling and molecular dynamic studies. Full clinical information was available for 29 individuals. Their phenotype is an attenuated CdLS phenotype compared to that caused by variants in NIPBL or SMC1A for facial morphology, limb anomalies, and especially for cognition and behavior. In the 20 individuals with limited clinical information, additional phenotypes include Mungan syndrome (in patients with biallelic variants) and holoprosencephaly, with or without CdLS characteristics. We describe several additional cases with phenotypes including sclerocornea, in which involvement of the RAD21 variant is uncertain. Variants were frequently familial, and genotype-phenotype analyses demonstrated striking interfamilial and intrafamilial variability. Careful phenotyping is essential in interpreting consequences of RAD21 variants, and protein modeling and dynamics can be helpful in determining pathogenicity. The current study should be helpful when counseling families with a RAD21 variation.
- Published
- 2020
- Full Text
- View/download PDF
32. Functional characterization of a novel SCN5A variant associated with long QT syndrome and sudden cardiac death.
- Author
-
Neubauer J, Wang Z, Rougier JS, Abriel H, Rieubland C, Bartholdi D, Haas C, and Medeiros-Domingo A
- Subjects
- Female, Genotype, Heterozygote, Humans, Infant, Male, Phenotype, Exome Sequencing, Young Adult, Death, Sudden, Cardiac etiology, Long QT Syndrome genetics, Mutation, Missense, NAV1.5 Voltage-Gated Sodium Channel genetics, Pedigree
- Abstract
Sudden arrhythmic death syndrome (SADS) in young individuals is a devastating and tragic event often caused by an undiagnosed inherited cardiac disease. Although post-mortem genetic testing represents a promising tool to elucidate potential disease-causing mechanisms in such autopsy-negative death cases, a variant interpretation is still challenging, and functional consequences of identified sequence alterations often remain unclear. Recently, we have identified a novel heterozygous missense variant (N1774H) in the Na
v 1.5 channel-encoding gene SCN5A in a 19-year-old female SADS victim. The aim of this study was to perform a co-segregation analysis in family members of the index case and to evaluate the functional consequences of this SCN5A variant. Functional characterization of the SCN5A N1774H variant was performed using patch-clamp techniques in TsA-201 cell line transiently expressing either wild-type or variant Nav 1.5 channels. Electrophysiological analyses revealed that variant Nav 1.5 channels show a loss-of-function in the peak current densities, but an increased late current compared to the wild-type channels, which could lead to both, loss- and gain-of-function respectively. Furthermore, clinical assessment and genetic testing of the relatives of the index case showed that all N1774H mutation carriers have prolonged QT intervals. The identification of several genotype and phenotype positive family members and the functional implication of the SCN5A N1774H variant support the evidence of the in silico predicted pathogenicity of the here reported sequence alteration.- Published
- 2019
- Full Text
- View/download PDF
33. SCN5A mutations in 442 neonates and children: genotype-phenotype correlation and identification of higher-risk subgroups.
- Author
-
Baruteau AE, Kyndt F, Behr ER, Vink AS, Lachaud M, Joong A, Schott JJ, Horie M, Denjoy I, Crotti L, Shimizu W, Bos JM, Stephenson EA, Wong L, Abrams DJ, Davis AM, Winbo A, Dubin AM, Sanatani S, Liberman L, Kaski JP, Rudic B, Kwok SY, Rieubland C, Tfelt-Hansen J, Van Hare GF, Guyomarc'h-Delasalle B, Blom NA, Wijeyeratne YD, Gourraud JB, Le Marec H, Ozawa J, Fressart V, Lupoglazoff JM, Dagradi F, Spazzolini C, Aiba T, Tester DJ, Zahavich LA, Beauséjour-Ladouceur V, Jadhav M, Skinner JR, Franciosi S, Krahn AD, Abdelsayed M, Ruben PC, Yung TC, Ackerman MJ, Wilde AA, Schwartz PJ, and Probst V
- Subjects
- Age Factors, Asymptomatic Diseases, Brugada Syndrome genetics, Child, Child, Preschool, Electrocardiography, Female, Follow-Up Studies, Gain of Function Mutation, Humans, Infant, Infant, Newborn, Long QT Syndrome genetics, Loss of Function Mutation, Male, Retrospective Studies, Risk Factors, Cardiac Conduction System Disease genetics, Genetic Association Studies, NAV1.5 Voltage-Gated Sodium Channel genetics
- Abstract
Aims: To clarify the clinical characteristics and outcomes of children with SCN5A-mediated disease and to improve their risk stratification., Methods and Results: A multicentre, international, retrospective cohort study was conducted in 25 tertiary hospitals in 13 countries between 1990 and 2015. All patients ≤16 years of age diagnosed with a genetically confirmed SCN5A mutation were included in the analysis. There was no restriction made based on their clinical diagnosis. A total of 442 children {55.7% boys, 40.3% probands, median age: 8.0 [interquartile range (IQR) 9.5] years} from 350 families were included; 67.9% were asymptomatic at diagnosis. Four main phenotypes were identified: isolated progressive cardiac conduction disorders (25.6%), overlap phenotype (15.6%), isolated long QT syndrome type 3 (10.6%), and isolated Brugada syndrome type 1 (1.8%); 44.3% had a negative electrocardiogram phenotype. During a median follow-up of 5.9 (IQR 5.9) years, 272 cardiac events (CEs) occurred in 139 (31.5%) patients. Patients whose mutation localized in the C-terminus had a lower risk. Compound genotype, both gain- and loss-of-function SCN5A mutation, age ≤1 year at diagnosis in probands and age ≤1 year at diagnosis in non-probands were independent predictors of CE., Conclusion: In this large paediatric cohort of SCN5A mutation-positive subjects, cardiac conduction disorders were the most prevalent phenotype; CEs occurred in about one-third of genotype-positive children, and several independent risk factors were identified, including age ≤1 year at diagnosis, compound mutation, and mutation with both gain- and loss-of-function.
- Published
- 2018
- Full Text
- View/download PDF
34. Unexplained cardiac arrest: a tale of conflicting interpretations of KCNQ1 genetic test results.
- Author
-
Chua HC, Servatius H, Asatryan B, Schaller A, Rieubland C, Noti F, Seiler J, Roten L, Baldinger SH, Tanner H, Fuhrer J, Haeberlin A, Lam A, Pless SA, and Medeiros-Domingo A
- Subjects
- DNA Mutational Analysis, Electrocardiography, Gene Frequency, Heart Arrest blood, Heart Arrest genetics, Humans, KCNQ1 Potassium Channel metabolism, Long QT Syndrome blood, Long QT Syndrome genetics, Male, Pedigree, Phenotype, Young Adult, DNA genetics, Genetic Testing methods, Heart Arrest etiology, KCNQ1 Potassium Channel genetics, Long QT Syndrome complications, Mutation
- Abstract
Objective: Unexplained cardiac arrest (UCA) is often the first manifestation of an inherited arrhythmogenic disease. Genetic testing in UCA is challenging due to the complexities of variant interpretation in the absence of supporting cardiac phenotype. We aimed to investigate if a KCNQ1 variant [p.(Pro64_Pro70del)], previously reported as pathogenic, contributes to the long-QT syndrome phenotype, co-segregates with disease or affects KCNQ1 function in vitro., Methods: DNA was extracted from peripheral blood of a 22-year-old male after resuscitation from UCA. Targeted exome sequencing was performed using the TruSight-One Sequencing Panel (Illumina). Variants in 190 clinically relevant cardiac genes with minor allele frequency < 1% were analyzed according to the guidelines of the American College of Medical Genetics. Functional characterization was performed using site-directed mutagenesis, expression in Xenopus laevis oocytes using the two-electrode voltage-clamp technique., Results: The 12-lead ECG, transthoracic echocardiography and coronary angiography after resuscitation showed no specific abnormalities. Two variants were identified: c.190_210del in-frame deletion in KCNQ1 (p.Pro64_Pro70del), reported previously as pathogenic and c.2431C > A in PKP2 (p.Arg811Ser), classified as likely benign. Two asymptomatic family members with no evident phenotype hosted the KCNQ1 variant. Functional studies showed that the wild-type and mutant channels have no significant differences in current levels, conductance-voltage relationships, as well as activation and deactivation kinetics, in the absence and presence of the auxiliary subunit KCNE1., Conclusions: Based on our data and previous reports, available evidence is insufficient to consider the variant KCNQ1:c.190_210del as pathogenic. Our findings call for cautious interpretation of genetic tests in UCA in the absence of a clinical phenotype.
- Published
- 2018
- Full Text
- View/download PDF
35. Recommendations for genetic testing and counselling after sudden cardiac death: practical aspects for Swiss practice.
- Author
-
Medeiros Domingo A, Bolliger S, Gräni C, Rieubland C, Hersch D, Asatryan B, Schyma C, Saguner A, Wyler D, Bhuiyan Z, Fellman F, Osculati AM, Ringger R, Fokstuen S, Sabatasso S, Wilhelm M, and Michaud K
- Subjects
- Age Factors, Autopsy, Forensic Pathology, Humans, Switzerland, Death, Sudden, Cardiac etiology, Family psychology, Genetic Counseling, Genetic Predisposition to Disease, Genetic Testing
- Abstract
There is a need to standardise, within a coordinated Swiss framework, the practical aspects of genetic testing and genetic counselling on possibly inherited cardiovascular disorders in relatives of a sudden cardiac death (SCD) victim. Because of the major advances in genetic investigation techniques and recent publication of international guidelines in the field of cardiology, genetics and pathology, we consider it important to summarise the current evidence and propose an optimal approach to post-mortem genetic investigation for SCD victims and their families in Switzerland. In this article, we discuss important technical, financial and medico-ethical aspects, and provide updated information on specific situations in which forensic pathologists, general practitioners and cardiologists should suspect a genetic origin of the SCD. At present, the principles of benefit, the duty to warn and the impact of genetic information for family members at risk are considered as strong justifications for post-mortem disclosure and prevail over the arguments of respect for a deceased person's privacy and confidentiality. This paper underlines also the need to update and improve the general knowledge concerning the genetic risk of cardiovascular pathologies, the importance to perform an autopsy and post-mortem genetic testing in SCD victims, and to develop standardized post-mortem disclosure policy at national and international levels for SCD cases and relatives.
- Published
- 2018
- Full Text
- View/download PDF
36. Phenotypes and genotypes in individuals with SMC1A variants.
- Author
-
Huisman S, Mulder PA, Redeker E, Bader I, Bisgaard AM, Brooks A, Cereda A, Cinca C, Clark D, Cormier-Daire V, Deardorff MA, Diderich K, Elting M, van Essen A, FitzPatrick D, Gervasini C, Gillessen-Kaesbach G, Girisha KM, Hilhorst-Hofstee Y, Hopman S, Horn D, Isrie M, Jansen S, Jespersgaard C, Kaiser FJ, Kaur M, Kleefstra T, Krantz ID, Lakeman P, Landlust A, Lessel D, Michot C, Moss J, Noon SE, Oliver C, Parenti I, Pie J, Ramos FJ, Rieubland C, Russo S, Selicorni A, Tümer Z, Vorstenbosch R, Wenger TL, van Balkom I, Piening S, Wierzba J, and Hennekam RC
- Subjects
- Adolescent, Adult, Child, Child, Preschool, De Lange Syndrome diagnosis, De Lange Syndrome physiopathology, Exome genetics, Humans, Infant, Infant, Newborn, Male, Middle Aged, Netherlands epidemiology, Rett Syndrome diagnosis, Rett Syndrome physiopathology, Spasms, Infantile diagnosis, Spasms, Infantile genetics, Spasms, Infantile physiopathology, Young Adult, Cell Cycle Proteins genetics, Chromosomal Proteins, Non-Histone genetics, De Lange Syndrome genetics, Proteins genetics, Rett Syndrome genetics
- Abstract
SMC1A encodes one of the proteins of the cohesin complex. SMC1A variants are known to cause a phenotype resembling Cornelia de Lange syndrome (CdLS). Exome sequencing has allowed recognizing SMC1A variants in individuals with encephalopathy with epilepsy who do not resemble CdLS. We performed an international, interdisciplinary study on 51 individuals with SMC1A variants for physical and behavioral characteristics, and compare results to those in 67 individuals with NIPBL variants. For the Netherlands all known individuals with SMC1A variants were studied, both with and without CdLS phenotype. Individuals with SMC1A variants can resemble CdLS, but manifestations are less marked compared to individuals with NIPBL variants: growth is less disturbed, facial signs are less marked (except for periocular signs and thin upper vermillion), there are no major limb anomalies, and they have a higher level of cognitive and adaptive functioning. Self-injurious behavior is more frequent and more severe in the NIPBL group. In the Dutch group 5 of 13 individuals (all females) had a phenotype that shows a remarkable resemblance to Rett syndrome: epileptic encephalopathy, severe or profound intellectual disability, stereotypic movements, and (in some) regression. Their missense, nonsense, and frameshift mutations are evenly spread over the gene. We conclude that SMC1A variants can result in a phenotype resembling CdLS and a phenotype resembling Rett syndrome. Resemblances between the SMC1A group and the NIPBL group suggest that a disturbed cohesin function contributes to the phenotype, but differences between these groups may also be explained by other underlying mechanisms such as moonlighting of the cohesin genes., (© 2017 Wiley Periodicals, Inc.)
- Published
- 2017
- Full Text
- View/download PDF
37. Phenotype and genotype in 103 patients with tricho-rhino-phalangeal syndrome.
- Author
-
Maas SM, Shaw AC, Bikker H, Lüdecke HJ, van der Tuin K, Badura-Stronka M, Belligni E, Biamino E, Bonati MT, Carvalho DR, Cobben J, de Man SA, Den Hollander NS, Di Donato N, Garavelli L, Grønborg S, Herkert JC, Hoogeboom AJ, Jamsheer A, Latos-Bielenska A, Maat-Kievit A, Magnani C, Marcelis C, Mathijssen IB, Nielsen M, Otten E, Ousager LB, Pilch J, Plomp A, Poke G, Poluha A, Posmyk R, Rieubland C, Silengo M, Simon M, Steichen E, Stumpel C, Szakszon K, Polonkai E, van den Ende J, van der Steen A, van Essen T, van Haeringen A, van Hagen JM, Verheij JB, Mannens MM, and Hennekam RC
- Subjects
- Abnormalities, Multiple pathology, Adolescent, Adult, Aged, Child, Child, Preschool, Female, Genetic Association Studies, Humans, Infant, Langer-Giedion Syndrome pathology, Male, Middle Aged, Mutation, Missense, Repressor Proteins, Young Adult, Abnormalities, Multiple genetics, DNA-Binding Proteins genetics, Langer-Giedion Syndrome genetics, Transcription Factors genetics
- Abstract
Tricho-rhino-phalangeal syndrome (TRPS) is characterized by craniofacial and skeletal abnormalities, and subdivided in TRPS I, caused by mutations in TRPS1, and TRPS II, caused by a contiguous gene deletion affecting (amongst others) TRPS1 and EXT1. We performed a collaborative international study to delineate phenotype, natural history, variability, and genotype-phenotype correlations in more detail. We gathered information on 103 cytogenetically or molecularly confirmed affected individuals. TRPS I was present in 85 individuals (22 missense mutations, 62 other mutations), TRPS II in 14, and in 5 it remained uncertain whether TRPS1 was partially or completely deleted. Main features defining the facial phenotype include fine and sparse hair, thick and broad eyebrows, especially the medial portion, a broad nasal ridge and tip, underdeveloped nasal alae, and a broad columella. The facial manifestations in patients with TRPS I and TRPS II do not show a significant difference. In the limbs the main findings are short hands and feet, hypermobility, and a tendency for isolated metacarpals and metatarsals to be shortened. Nails of fingers and toes are typically thin and dystrophic. The radiological hallmark are the cone-shaped epiphyses and in TRPS II multiple exostoses. Osteopenia is common in both, as is reduced linear growth, both prenatally and postnatally. Variability for all findings, also within a single family, can be marked. Morbidity mostly concerns joint problems, manifesting in increased or decreased mobility, pain and in a minority an increased fracture rate. The hips can be markedly affected at a (very) young age. Intellectual disability is uncommon in TRPS I and, if present, usually mild. In TRPS II intellectual disability is present in most but not all, and again typically mild to moderate in severity. Missense mutations are located exclusively in exon 6 and 7 of TRPS1. Other mutations are located anywhere in exons 4-7. Whole gene deletions are common but have variable breakpoints. Most of the phenotype in patients with TRPS II is explained by the deletion of TRPS1 and EXT1, but haploinsufficiency of RAD21 is also likely to contribute. Genotype-phenotype studies showed that mutations located in exon 6 may have somewhat more pronounced facial characteristics and more marked shortening of hands and feet compared to mutations located elsewhere in TRPS1, but numbers are too small to allow firm conclusions., (Copyright © 2015 Elsevier Masson SAS. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
38. 15q26.1 microdeletion encompassing only CHD2 and RGMA in two adults with moderate intellectual disability, epilepsy and truncal obesity.
- Author
-
Courage C, Houge G, Gallati S, Schjelderup J, and Rieubland C
- Subjects
- Adolescent, Adult, Child, Child, Preschool, Epilepsy diagnosis, Facies, GPI-Linked Proteins genetics, Humans, Infant, Intellectual Disability diagnosis, Male, Obesity diagnosis, Phenotype, Young Adult, Chromosome Deletion, Chromosomes, Human, Pair 15, DNA-Binding Proteins genetics, Epilepsy genetics, Intellectual Disability genetics, Nerve Tissue Proteins genetics, Obesity genetics
- Abstract
We report two patients with microdeletions in chromosomal subdomain 15q26.1 encompassing only two genes, CHD2 and RGMA. Both patients present a distinct phenotype with intellectual disability, epilepsy, behavioral issues, truncal obesity, scoliosis and facial dysmorphism. CHD2 haploinsufficiency is known to cause intellectual disability and epilepsy, RGMA haploinsufficiency might explain truncal obesity with onset around puberty observed in our two patients., (Copyright © 2014 Elsevier Masson SAS. All rights reserved.)
- Published
- 2014
- Full Text
- View/download PDF
39. Duplication of the sodium channel gene cluster on 2q24 in children with early onset epilepsy.
- Author
-
Goeggel Simonetti B, Rieubland C, Courage C, Strozzi S, Tschumi S, Gallati S, and Lemke JR
- Subjects
- Comparative Genomic Hybridization, Databases, Factual statistics & numerical data, Electroencephalography, Female, Humans, Infant, Male, Chromosomes, Human, Pair 2 genetics, Epilepsy genetics, Gene Duplication genetics, Genetic Predisposition to Disease genetics, Sodium Channels genetics
- Abstract
Purpose: Sodium channel gene aberrations are associated with a wide range of seizure disorders, particularly Dravet syndrome. They usually consist of missense or truncating gene mutations or deletions. Duplications involving multiple genes encoding for different sodium channels are not widely known. This article summarizes the clinical, radiologic, and genetic features of patients with 2q24 duplication involving the sodium channel gene cluster., Methods: A systematic review of the literature and report of two cases., Key Findings: Nine individuals with 2q24 duplication involving the sodium channel gene cluster are described (seven female, two male). All presented with severe seizures refractory to anticonvulsant drugs. Seizure onset was in the neonatal period in eight patients with SCN1A-involvement, in infancy in one patient with SCN2A and SCN3A, but no SCN1A involvement. Seizure activity decreased and eventually stopped at 5-20 months of age. Seizures recurred at the age of 3 years in the patient with SCN2A and SCN3A, but no SCN1A involvement. Eight patients had a poor neurodevelopmental outcome despite seizure freedom., Significance: This article describes a distinct seizure disorder associated with a duplication of the sodium gene cluster on 2q24 described in otherwise healthy neonates and infants with severe, anticonvulsant refractory seizures and poor developmental outcome despite seizure freedom occurring at the age of 5-20 months., (Wiley Periodicals, Inc. © 2012 International League Against Epilepsy.)
- Published
- 2012
- Full Text
- View/download PDF
40. Mirror extreme BMI phenotypes associated with gene dosage at the chromosome 16p11.2 locus.
- Author
-
Jacquemont S, Reymond A, Zufferey F, Harewood L, Walters RG, Kutalik Z, Martinet D, Shen Y, Valsesia A, Beckmann ND, Thorleifsson G, Belfiore M, Bouquillon S, Campion D, de Leeuw N, de Vries BB, Esko T, Fernandez BA, Fernández-Aranda F, Fernández-Real JM, Gratacòs M, Guilmatre A, Hoyer J, Jarvelin MR, Kooy RF, Kurg A, Le Caignec C, Männik K, Platt OS, Sanlaville D, Van Haelst MM, Villatoro Gomez S, Walha F, Wu BL, Yu Y, Aboura A, Addor MC, Alembik Y, Antonarakis SE, Arveiler B, Barth M, Bednarek N, Béna F, Bergmann S, Beri M, Bernardini L, Blaumeiser B, Bonneau D, Bottani A, Boute O, Brunner HG, Cailley D, Callier P, Chiesa J, Chrast J, Coin L, Coutton C, Cuisset JM, Cuvellier JC, David A, de Freminville B, Delobel B, Delrue MA, Demeer B, Descamps D, Didelot G, Dieterich K, Disciglio V, Doco-Fenzy M, Drunat S, Duban-Bedu B, Dubourg C, El-Sayed Moustafa JS, Elliott P, Faas BH, Faivre L, Faudet A, Fellmann F, Ferrarini A, Fisher R, Flori E, Forer L, Gaillard D, Gerard M, Gieger C, Gimelli S, Gimelli G, Grabe HJ, Guichet A, Guillin O, Hartikainen AL, Heron D, Hippolyte L, Holder M, Homuth G, Isidor B, Jaillard S, Jaros Z, Jiménez-Murcia S, Helas GJ, Jonveaux P, Kaksonen S, Keren B, Kloss-Brandstätter A, Knoers NV, Koolen DA, Kroisel PM, Kronenberg F, Labalme A, Landais E, Lapi E, Layet V, Legallic S, Leheup B, Leube B, Lewis S, Lucas J, MacDermot KD, Magnusson P, Marshall C, Mathieu-Dramard M, McCarthy MI, Meitinger T, Mencarelli MA, Merla G, Moerman A, Mooser V, Morice-Picard F, Mucciolo M, Nauck M, Ndiaye NC, Nordgren A, Pasquier L, Petit F, Pfundt R, Plessis G, Rajcan-Separovic E, Ramelli GP, Rauch A, Ravazzolo R, Reis A, Renieri A, Richart C, Ried JS, Rieubland C, Roberts W, Roetzer KM, Rooryck C, Rossi M, Saemundsen E, Satre V, Schurmann C, Sigurdsson E, Stavropoulos DJ, Stefansson H, Tengström C, Thorsteinsdóttir U, Tinahones FJ, Touraine R, Vallée L, van Binsbergen E, Van der Aa N, Vincent-Delorme C, Visvikis-Siest S, Vollenweider P, Völzke H, Vulto-van Silfhout AT, Waeber G, Wallgren-Pettersson C, Witwicki RM, Zwolinksi S, Andrieux J, Estivill X, Gusella JF, Gustafsson O, Metspalu A, Scherer SW, Stefansson K, Blakemore AI, Beckmann JS, and Froguel P
- Subjects
- Adolescent, Adult, Aged, Aging, Body Height genetics, Case-Control Studies, Child, Child, Preschool, Cohort Studies, Comparative Genomic Hybridization, Developmental Disabilities genetics, Energy Metabolism genetics, Europe, Female, Gene Duplication genetics, Gene Expression Profiling, Genetic Predisposition to Disease genetics, Genome-Wide Association Study, Head anatomy & histology, Heterozygote, Humans, Infant, Infant, Newborn, Male, Mental Disorders genetics, Middle Aged, Mutation genetics, North America, RNA, Messenger analysis, RNA, Messenger genetics, Sequence Deletion genetics, Transcription, Genetic, Young Adult, Body Mass Index, Chromosomes, Human, Pair 16 genetics, Gene Dosage genetics, Obesity genetics, Phenotype, Thinness genetics
- Abstract
Both obesity and being underweight have been associated with increased mortality. Underweight, defined as a body mass index (BMI) ≤ 18.5 kg per m(2) in adults and ≤ -2 standard deviations from the mean in children, is the main sign of a series of heterogeneous clinical conditions including failure to thrive, feeding and eating disorder and/or anorexia nervosa. In contrast to obesity, few genetic variants underlying these clinical conditions have been reported. We previously showed that hemizygosity of a ∼600-kilobase (kb) region on the short arm of chromosome 16 causes a highly penetrant form of obesity that is often associated with hyperphagia and intellectual disabilities. Here we show that the corresponding reciprocal duplication is associated with being underweight. We identified 138 duplication carriers (including 132 novel cases and 108 unrelated carriers) from individuals clinically referred for developmental or intellectual disabilities (DD/ID) or psychiatric disorders, or recruited from population-based cohorts. These carriers show significantly reduced postnatal weight and BMI. Half of the boys younger than five years are underweight with a probable diagnosis of failure to thrive, whereas adult duplication carriers have an 8.3-fold increased risk of being clinically underweight. We observe a trend towards increased severity in males, as well as a depletion of male carriers among non-medically ascertained cases. These features are associated with an unusually high frequency of selective and restrictive eating behaviours and a significant reduction in head circumference. Each of the observed phenotypes is the converse of one reported in carriers of deletions at this locus. The phenotypes correlate with changes in transcript levels for genes mapping within the duplication but not in flanking regions. The reciprocal impact of these 16p11.2 copy-number variants indicates that severe obesity and being underweight could have mirror aetiologies, possibly through contrasting effects on energy balance.
- Published
- 2011
- Full Text
- View/download PDF
41. Metopic and sagittal synostosis in Greig cephalopolysyndactyly syndrome: five cases with intragenic mutations or complete deletions of GLI3.
- Author
-
Hurst JA, Jenkins D, Vasudevan PC, Kirchhoff M, Skovby F, Rieubland C, Gallati S, Rittinger O, Kroisel PM, Johnson D, Biesecker LG, and Wilkie AO
- Subjects
- Adolescent, Child, Child, Preschool, Female, Heterozygote, Humans, Infant, Infant, Newborn, Male, Phenotype, Zinc Finger Protein Gli3, Acrocephalosyndactylia complications, Acrocephalosyndactylia genetics, Craniosynostoses complications, Craniosynostoses genetics, Kruppel-Like Transcription Factors genetics, Mutation genetics, Nerve Tissue Proteins genetics
- Abstract
Greig cephalopolysyndactyly syndrome (GCPS) is a multiple congenital malformation characterised by limb and craniofacial anomalies, caused by heterozygous mutation or deletion of GLI3. We report four boys and a girl who were presented with trigonocephaly due to metopic synostosis, in association with pre- and post-axial polydactyly and cutaneous syndactyly of hands and feet. Two cases had additional sagittal synostosis. None had a family history of similar features. In all five children, the diagnosis of GCPS was confirmed by molecular analysis of GLI3 (two had intragenic mutations and three had complete gene deletions detected on array comparative genomic hybridisation), thus highlighting the importance of trigonocephaly or overt metopic or sagittal synostosis as a distinct presenting feature of GCPS. These observations confirm and extend a recently proposed association of intragenic GLI3 mutations with metopic synostosis; moreover, the three individuals with complete deletion of GLI3 were previously considered to have Carpenter syndrome, highlighting an important source of diagnostic confusion.
- Published
- 2011
- Full Text
- View/download PDF
42. Lambdoid synostosis and craniofacial dysmorphism with normal intellect: A novel syndrome?
- Author
-
Rieubland C, Holmes AD, Caramins M, Roscioli T, and Amor DJ
- Subjects
- Chromatography, High Pressure Liquid, Craniosynostoses genetics, DNA Mutational Analysis, Humans, Infant, Karyotyping, Male, Nuclear Proteins genetics, Receptor, Fibroblast Growth Factor, Type 1 genetics, Syndrome, Twist-Related Protein 1 genetics, Craniosynostoses pathology, Facial Bones abnormalities, Skull abnormalities
- Published
- 2011
- Full Text
- View/download PDF
43. Mutations in the LHX2 gene are not a frequent cause of micro/anophthalmia.
- Author
-
Desmaison A, Vigouroux A, Rieubland C, Peres C, Calvas P, and Chassaing N
- Subjects
- Amino Acid Sequence, Base Sequence, Cohort Studies, Conserved Sequence genetics, Homeodomain Proteins chemistry, Humans, LIM-Homeodomain Proteins, Molecular Sequence Data, Transcription Factors chemistry, Anophthalmos genetics, Homeodomain Proteins genetics, Microphthalmos genetics, Mutation, Missense genetics, Transcription Factors genetics
- Abstract
Purpose: Microphthalmia and anophthalmia are at the severe end of the spectrum of abnormalities in ocular development. A few genes (orthodenticle homeobox 2 [OTX2], retina and anterior neural fold homeobox [RAX], SRY-box 2 [SOX2], CEH10 homeodomain-containing homolog [CHX10], and growth differentiation factor 6 [GDF6]) have been implicated mainly in isolated micro/anophthalmia but causative mutations of these genes explain less than a quarter of these developmental defects. The essential role of the LIM homeobox 2 (LHX2) transcription factor in early eye development has recently been documented. We postulated that mutations in this gene could lead to micro/anophthalmia, and thus performed molecular screening of its sequence in patients having micro/anophthalmia., Methods: Seventy patients having non-syndromic forms of colobomatous microphthalmia (n=25), isolated microphthalmia (n=18), or anophthalmia (n=17), and syndromic forms of micro/anophthalmia (n=10) were included in this study after negative molecular screening for OTX2, RAX, SOX2, and CHX10 mutations. Mutation screening of LHX2 was performed by direct sequencing of the coding sequences and intron/exon boundaries., Results: Two heterozygous variants of unknown significance (c.128C>G [p.Pro43Arg]; c.776C>A [p.Pro259Gln]) were identified in LHX2 among the 70 patients. These variations were not identified in a panel of 100 control patients of mixed origins. The variation c.776C>A (p.Pro259Gln) was considered as non pathogenic by in silico analysis, while the variation c.128C>G (p.Pro43Arg) considered as deleterious by in silico analysis and was inherited from the asymptomatic father., Conclusions: Mutations in LHX2 do not represent a frequent cause of micro/anophthalmia.
- Published
- 2010
44. Phenotypic and molecular characterization of a novel case of dyssegmental dysplasia, Silverman-Handmaker type.
- Author
-
Rieubland C, Jacquemont S, Mittaz L, Osterheld MC, Vial Y, Superti-Furga A, Unger S, and Bonafé L
- Subjects
- Abnormalities, Multiple genetics, Dwarfism genetics, Encephalocele genetics, Female, Humans, Meningocele genetics, Osteochondrodysplasias genetics, Point Mutation, Pregnancy, Heparan Sulfate Proteoglycans genetics
- Abstract
Dyssegmental dysplasia, Silverman-Handmaker type (DDSH; #MIM 224410) is an autosomal recessive form of lethal dwarfism characterized by a defect in segmentation and fusion of vertebral bodies components ("anisospondyly") and by severe limb shortening. It is caused by mutations in the perlecan gene (HSPG2), but so far, only three molecularly confirmed cases have been reported. We report a novel case of DDSH in a fetus that presented at 15 weeks gestation with encephalocele, severe micromelic dwarfism and narrow thorax. After termination of pregnancy, radiographs showed short ribs, short and bent long bones and anisospondyly of two vertebral bodies. The fetus was homozygous for a previously undescribed null mutation in HSPG2., (Copyright © 2010 Elsevier Masson SAS. All rights reserved.)
- Published
- 2010
- Full Text
- View/download PDF
45. Two cases of trisomy 16 mosaicism ascertained postnatally.
- Author
-
Rieubland C, Francis D, Houben L, Corrie S, Bankier A, and White SM
- Subjects
- Abnormalities, Multiple diagnosis, Fatal Outcome, Female, Humans, Hypospadias complications, Hypospadias diagnosis, Hypospadias genetics, Infant, Infant, Newborn, Infant, Newborn, Diseases diagnosis, Infant, Newborn, Diseases genetics, Male, Polydactyly complications, Polydactyly diagnosis, Polydactyly genetics, Skin Pigmentation genetics, Abnormalities, Multiple genetics, Chromosomes, Human, Pair 16, Mosaicism, Trisomy diagnosis
- Abstract
Postnatally ascertained trisomy 16 mosaicism is a rare diagnosis, with only three reported cases to date with no defined clinical phenotype. Trisomy 16 mosaicism diagnosed prenatally is common and associated with variable pregnancy outcomes ranging from stillbirth with multiple congenital abnormalities to an apparently normal newborn, making the genetic counseling very challenging. It is not clear whether uniparental disomy (UPD) 16 contributes to the phenotype, although it has been suggested that maternal UPD 16 affects the rate of intra-uterine growth retardation (IUGR) and congenital anomalies. We report on two further cases of trisomy 16 mosaicism confined to fibroblasts diagnosed postnatally. Patient 1 presented at birth with severe hypospadias, unilateral postaxial polydactyly, and different hair color with midline demarcation. His growth and development were normal at 11 months of age. Patient 2 was born with IUGR, significant craniofacial and body asymmetry, asymmetric skin hyperpigmentation, unilateral hearing loss, scoliosis, VSD, unexplained dilated cardiomyopathy, feeding difficulties, failure to thrive, and recurrent respiratory tract infections. She died at 7 months of age from respiratory failure. These two further cases of postnatally diagnosed trisomy 16 mosaicism highlight the variability of clinical features and outcome in this diagnosis. While Patient 2 presented with typical features of chromosomal mosaicism, Patient 1 had mild and transient features with essentially normal outcome, suggesting that trisomy 16 mosaicism may be under-diagnosed.
- Published
- 2009
- Full Text
- View/download PDF
46. Uncombable hair syndrome: a clinical report.
- Author
-
Rieubland C, de Viragh PA, and Addor MC
- Subjects
- Child, Preschool, Female, Hair ultrastructure, Hair Color, Humans, Microscopy, Electron, Scanning, Switzerland, Hair abnormalities, Hair Diseases congenital
- Abstract
Uncombable hair syndrome, also named "pili trianguli et canaliculi" or "cheveux incoiffables", is a rare structural anomaly of the hair shaft first reported in 1973. Both inherited and sporadic forms have been described, characterized by dry and frizzy scalp hair that is impossible to comb. Diagnosis is suspected clinically and confirmed by scanning electron microscopy. The condition is usually isolated, however, several physical abnormalities can be associated. We report the case of a 2(1/2) year old-girl presenting isolated uncombable hair syndrome suspected clinically and confirmed by scanning electron microscopy.
- Published
- 2007
- Full Text
- View/download PDF
47. Molecular defects of the C7 gene in two patients with complement C7 deficiency.
- Author
-
Barroso S, Rieubland C, José álvarez A, López-Trascasa M, Bart PA, Núñez-Roldán A, and Sánchez B
- Subjects
- Adult, Amino Acid Sequence, Base Sequence, Complement System Proteins analysis, DNA Mutational Analysis methods, Female, Humans, Lupus Erythematosus, Systemic immunology, Meningitis, Meningococcal immunology, Molecular Sequence Data, Complement C7 deficiency, Complement C7 genetics, Mutation
- Abstract
Different genetic mutations have been described in complement components resulting in total or subtotal deficiency states. In this work we report the genetic basis of C7 deficiency in a previously reported Spanish patient exhibiting a combined total deficiency of C7 and C4B associated with systemic lupus erythematosus. Exon-specific polymerase chain reaction and sequencing revealed a not previously described single base mutation in exon 10 (T1458A) leading to a stop codon that causes the premature truncation of the C7 protein (C464X). Additionally, a C to A transversion at position 1561 (exon 11) was found in the patient resulting in an amino acid change (R499S). This latter mutation has been previously reported in individuals with subtotal C7 deficiency or with combined subtotal C6/C7 deficiency from widely spaced geographical areas. Another novel mutation was found in a second patient with meningococcal meningitis of Bolivian and Czech origin; a 11-base pair deletion of nucleotides 631-641 in exon 6 leading to the generation of a downstream stop codon causing the premature truncation of the C7 protein product (T189 x 193). This patient was found to be a heterozygous compound for another mutation in C7; a two-base pair deletion of nucleotides 1922 and 1923, 1923 and 1924 or 1924 and 1925 in exon 14 (1922delAG/1923delGA/1924delAG), leading again to the generation of a downstream stop codon that provokes the truncation of the C7 protein (S620x630). This latter mutation has been recently reported by our group in another Spanish family. Our results provide more evidences for the heterogeneous molecular basis of C7 deficiency.
- Published
- 2006
- Full Text
- View/download PDF
48. Mutations in the SDHB gene are associated with extra-adrenal and/or malignant phaeochromocytomas.
- Author
-
Gimenez-Roqueplo AP, Favier J, Rustin P, Rieubland C, Crespin M, Nau V, Khau Van Kien P, Corvol P, Plouin PF, and Jeunemaitre X
- Subjects
- Adrenal Gland Neoplasms blood supply, Adrenal Gland Neoplasms enzymology, Adult, DNA, Neoplasm genetics, Female, Germ-Line Mutation, Humans, Iron-Sulfur Proteins, Loss of Heterozygosity, Male, Middle Aged, Pheochromocytoma blood supply, Pheochromocytoma enzymology, Urinary Bladder Neoplasms blood supply, Urinary Bladder Neoplasms enzymology, Urinary Bladder Neoplasms genetics, Adrenal Gland Neoplasms genetics, Pheochromocytoma genetics, Protein Subunits genetics, Succinate Dehydrogenase genetics
- Abstract
Germ-line mutations in the genes encoding succinate dehydrogenase complex subunits B (SDHB) and D (SDHD) have been reported in familial paragangliomas and apparently sporadic phaeochromocytomas (ASP), but the genotype-phenotype relationships of these mutations are unknown. Eighty-four patients (all but 2 followed up for 8.8 +/- 5.7 years) with ASP (57 with adrenal tumors, 27 with extra-adrenal, multiple, malignant, or recurrent tumors) were screened for the major susceptibility genes for phaeochromocytoma (RET, VHL, SDHD, and SDHB). Thirty-three tumors were available for molecular analysis, enzyme assays, and immunohistochemistry. No (0%) RET and 2 (2.4%) VHL mutations were detected. Only two coding single nucleotide polymorphisms in the SDHD gene (G12S and H50R) were found in 6 patients (7%). Conversely, six deleterious mutations in the SDHB gene were identified in 8 patients (9.5%). Ectopic site and recurrence or malignancy were strongly associated with SDHB mutations (7 of 8, 87%, versus 20 of 76, 26%; P = 0.001). Somatic DNA analysis indicated a loss of heterozygosity at chromosome 1p36 (SDHB locus) in 16 of 33 cases (48%). A loss of heterozygosity at the SDHB locus was found in all tumors with SDHB mutation, and assays of respiratory chain enzymes showed a complete loss of complex II catalytic activity. The vascular architecture of tumors with SDHB mutations displayed features typical of malignancy. These data strongly suggest that SDHB gene is a tumor suppressor gene and that the identification of germ-line mutations in SDHB gene in patients with ASPs should be considered as a high-risk factor for malignancy or recurrence.
- Published
- 2003
49. Functional consequences of a SDHB gene mutation in an apparently sporadic pheochromocytoma.
- Author
-
Gimenez-Roqueplo AP, Favier J, Rustin P, Rieubland C, Kerlan V, Plouin PF, Rötig A, and Jeunemaitre X
- Subjects
- Adrenal Gland Neoplasms enzymology, Basic Helix-Loop-Helix Transcription Factors, Chromosomes, Human, Pair 1, DNA Mutational Analysis, Electron Transport Complex II, Endothelial Growth Factors genetics, Female, Gene Expression, Germ-Line Mutation, Humans, Immunohistochemistry, In Situ Hybridization, Iron-Sulfur Proteins physiology, Loss of Heterozygosity, Lymphokines genetics, Middle Aged, Multienzyme Complexes deficiency, Multienzyme Complexes genetics, Mutation, Missense, Oxidoreductases deficiency, Oxidoreductases genetics, Pheochromocytoma enzymology, Protein Subunits, RNA, Messenger analysis, Sequence Analysis, DNA, Succinate Dehydrogenase deficiency, Succinate Dehydrogenase genetics, Tomography, X-Ray Computed, Trans-Activators genetics, Vascular Endothelial Growth Factor A, Vascular Endothelial Growth Factors, Adrenal Gland Neoplasms genetics, Iron-Sulfur Proteins genetics, Mutation, Pheochromocytoma genetics
- Abstract
Three genes encoding for mitochondrial complex II proteins are linked to hereditary paraganglioma. We have recently shown that an inactivation of the SDHD gene is associated with a complete loss of mitochondrial complex II activity and a stimulation of the angiogenic pathway (Gimenez-Roqueplo, A. P., J. Favier, P. Rustin, J. J. Mourad, P. F. Plouin, P. Corvol, A. Rötig, and X. Jeunemaitre, 2001, Am J Hum Genet 69:1186-1197). Here, we relate the case of a malignant sporadic pheochromocytoma induced by a germline missense mutation of the SDHB gene. Within the tumor, a loss of heterozygosity at chromosome 1pter led to a null SDHB allele and to a complete loss of complex II enzymatic activity. In situ hybridization and immunohistochemistry experiments showed a high expression of hypoxic-angiogenic responsive genes, similar to that previously observed in inherited-SDHD tumors. This observation highlights the role of the complex II mitochondrial genes in the oxygen-sensing pathway and in the regulation of angiogenesis of neural crest-derived tumors.
- Published
- 2002
- Full Text
- View/download PDF
Catalog
Discovery Service for Jio Institute Digital Library
For full access to our library's resources, please sign in.