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7 results on '"Aral B"'

1. OFD1 mutations in males: phenotypic spectrum and ciliary basal body docking impairment.

Author

Thauvin-Robinet C, Thomas S, Sinico M, Aral B, Burglen L, Gigot N, Dollfus H, Rossignol S, Raynaud M, Philippe C, Badens C, Touraine R, Gomes C, Franco B, Lopez E, Elkhartoufi N, Faivre L, Munnich A, Boddaert N, Van Maldergem L, Encha-Razavi F, Lyonnet S, Vekemans M, Escudier E, and Attié-Bitach T

Subjects
Abnormalities, Multiple pathology, Adolescent, Basal Bodies metabolism, Cerebellar Diseases pathology, Cerebellum abnormalities, Child, Child, Preschool, Cilia metabolism, Eye Abnormalities pathology, Genetic Diseases, X-Linked pathology, Genotype, Humans, Infant, Newborn, Kidney Diseases, Cystic pathology, Male, Orofaciodigital Syndromes pathology, Phenotype, Retina pathology, Young Adult, Abnormalities, Multiple genetics, Basal Bodies pathology, Cerebellar Diseases genetics, Cilia pathology, Eye Abnormalities genetics, Genetic Diseases, X-Linked genetics, Kidney Diseases, Cystic genetics, Mutation, Orofaciodigital Syndromes genetics, Proteins genetics, Retina abnormalities
Published
2013
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2. Long-term follow-up and molecular characterization of a patient with a RECQL4 mutation spectrum disorder.

Author

Fradin M, Merklen-Djafri C, Perrigouard C, Aral B, Muller J, Stoetzel C, Frouin E, Flori E, Doray B, Dollfus H, and Lipsker D

Subjects
Adult, Child, Humans, Infant, Newborn, Keratosis genetics, Male, Mutation, Pedigree, Time Factors, Young Adult, Abnormalities, Multiple genetics, Alopecia genetics, Anal Canal abnormalities, Anodontia genetics, Dwarfism genetics, Heart Septal Defects, Atrial genetics, Limb Deformities, Congenital genetics, Patella abnormalities, Pigmentation Disorders genetics, Radius abnormalities, RecQ Helicases genetics, Rothmund-Thomson Syndrome genetics, Thumb abnormalities
Abstract

The follow-up of a man from birth to adulthood, presenting with features both of RAPADILINO and Rothmund-Thomson syndrome (RTS), is described. Molecular studies confirmed the presence of two different mutations, c.2767_2768delTT and c.3061C>T, in the RECQL4 gene. This gene is known to be causative of a spectrum including Baller-Gerold syndrome, RAPADILINO syndrome and RTS. New and rare features such as oral leukoplakia and very prominent hyperkeratotic verrucous papules on both soles are shown. This patient has to date no cancer history despite bearing a truncating mutation at the age of 21 years, which is also unusual.

Published
2013
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3. Search for a gene responsible for Floating-Harbor syndrome on chromosome 12q15q21.1.

Author

Lopez E, Callier P, Cormier-Daire V, Lacombe D, Moncla A, Bottani A, Lambert S, Goldenberg A, Doray B, Odent S, Sanlaville D, Gueneau L, Duplomb L, Huet F, Aral B, Thauvin-Robinet C, and Faivre L

Subjects
Adult, Child, Child, Preschool, Comparative Genomic Hybridization methods, Female, Genetic Predisposition to Disease, Haploinsufficiency genetics, High-Throughput Nucleotide Sequencing, Humans, Male, Phenotype, Abnormalities, Multiple genetics, Abnormalities, Multiple pathology, Chromosomes, Human, Pair 12 genetics, Craniofacial Abnormalities genetics, Craniofacial Abnormalities pathology, Growth Disorders genetics, Growth Disorders pathology, Heart Septal Defects, Ventricular genetics, Heart Septal Defects, Ventricular pathology, Sequence Deletion genetics
Abstract

Floating-Harbor syndrome (FHS) is characterized by characteristic facial dysmorphism, short stature with delayed bone age, and expressive language delay. To date, the gene(s) responsible for FHS is (are) unknown and the diagnosis is only made on the basis of the clinical phenotype. The majority of cases appeared to be sporadic but rare cases following autosomal dominant inheritance have been reported. We identified a 4.7 Mb de novo 12q15-q21.1 microdeletion in a patient with FHS and intellectual deficiency. Pangenomic 244K array-CGH performed in a series of 12 patients with FHS failed to identify overlapping deletions. We hypothesized that FHS is caused by haploinsufficiency of one of the 19 genes or predictions located in the deletion found in our index patient. Since none of them appeared to be good candidate gene by their function, a high-throughput sequencing approach of the region of interest was used in eight FHS patients. No pathogenic mutation was found in these patients. This approach failed to identify the gene responsible for FHS, and this can be explained by at least four reasons: (i) our index patient could be a phenocopy of FHS; (ii) the disease may be clinically heterogeneous (since the diagnosis relies exclusively on clinical features), (iii) these could be genetic heterogeneity of the disease, (iv) the patient could carry a mutation in a gene located elsewhere. Recent descriptions of patients with 12q15-q21.1 microdeletions argue in favor of the phenocopy hypothesis., (Copyright © 2012 Wiley Periodicals, Inc.)

Published
2012
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4. GLI3 is rarely implicated in OFD syndromes with midline abnormalities.

Author

Avila M, Gigot N, Aral B, Callier P, Gautier E, Thevenon J, Pasquier L, Lopez E, Gueneau L, Duplomb L, Goldenberg A, Baumann C, Cormier V, Marlin S, Masurel-Paulet A, Huet F, Attié-Bitach T, Faivre L, and Thauvin-Robinet C

Subjects
Humans, Abnormalities, Multiple genetics, Kruppel-Like Transcription Factors genetics, Mutation, Nerve Tissue Proteins genetics, Pallister-Hall Syndrome pathology, Polydactyly pathology, Syndactyly pathology
Published
2011
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5. Search for the best indicators for the presence of a VPS13B gene mutation and confirmation of diagnostic criteria in a series of 34 patients genotyped for suspected Cohen syndrome.

Author

El Chehadeh S, Aral B, Gigot N, Thauvin-Robinet C, Donzel A, Delrue MA, Lacombe D, David A, Burglen L, Philip N, Moncla A, Cormier-Daire V, Rio M, Edery P, Verloes A, Bonneau D, Afenjar A, Jacquette A, Heron D, Sarda P, Pinson L, Doray B, Vigneron J, Leheup B, Frances-Guidet AM, Dienne G, Holder M, Masurel-Paulet A, Huet F, Teyssier JR, and Faivre L

Subjects
Abnormalities, Multiple pathology, Adolescent, Adult, Child, Child, Preschool, Family, Female, Genotype, Humans, Male, Neutropenia complications, Neutropenia epidemiology, Neutropenia genetics, Reproducibility of Results, Retinal Diseases complications, Retinal Diseases epidemiology, Retinal Diseases genetics, Retinal Diseases pathology, Syndrome, Young Adult, Abnormalities, Multiple diagnosis, Abnormalities, Multiple genetics, Mutation genetics, Vesicular Transport Proteins genetics
Abstract

Background: Cohen syndrome is a rare autosomal recessive inherited disorder that results from mutations of the VPS13B gene. Clinical features consist of a combination of mental retardation, facial dysmorphism, postnatal microcephaly, truncal obesity, slender extremities, joint hyperextensibility, myopia, progressive chorioretinal dystrophy, and intermittent neutropenia., Patients and Methods: The aim of the study was to determine which of the above clinical features were the best indicators for the presence of VPS13B gene mutations in a series of 34 patients with suspected Cohen syndrome referred for molecular analysis of VPS13B., Results: 14 VPS13B gene mutations were identified in 12 patients, and no mutation was found in 22 patients. The presence of chorioretinal dystrophy (92% vs 32%, p=0.0023), intermittent neutropenia (92% vs 5%, p<0.001), and postnatal microcephaly (100% vs 48%, p=0.0045) was significantly higher in the group of patients with a VPS13B gene mutation compared to the group of patients without a mutation. All patients with VPS13B mutations had chorioretinal dystrophy and/or intermittent neutropenia. The Kolehmainen diagnostic criteria provided 100% sensibility and 77% specificity when applied to this series., Conclusion: From this study and a review of more than 160 genotyped cases from the literature, it is concluded that, given the large size of the gene, VPS13B screening is not indicated in the absence of chorioretinal dystrophy or neutropenia in patients aged over 5 years. The follow-up of young patients could be a satisfactory alternative unless there are some reproductive issues.

Published
2010
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6. Fifteen years of research on oral-facial-digital syndromes: from 1 to 16 causal genes

Author

Nadège Gigot, Anne Dieux, Yannis Duffourd, Bernard Aral, Lydie Burglen, Bérénice Doray, Olivier Rosnet, Alice Goldenberg, Martijn A. Huynen, Oliver E. Blacque, Brunella Franco, André Mégarbané, Diane Doummar, Ernie M.H.F. Bongers, Anne Fargeot-Espaliat, Clarisse Baumann, Judith St-Onge, Daniel Birnbaum, Sophie Saunier, Thibaut Eguether, Jean-François Deleuze, Estelle Lopez, Dominique Gaillard, Geneviève Pierquin, Shubha R. Phadke, Michel R. Leroux, Rachel H. Giles, Tania Attié-Bitach, Jaclyn S. Goldstein, Isabelle Desguerres, Elisabeth Steichen-Gersdorf, Brigitte Gilbert-Dussardier, Manuela Morleo, Jesús Argente, Jean Baptiste Rivière, Gregory J. Pazour, Christel Thauvin-Robinet, Julien Thevenon, Albert David, Maxence V. Nachury, Laurence Faivre, Philippe Loget, Véronique Chevrier, Bruno Reversade, Laurence Jego, Ange Line Bruel, Vicente Herranz-Pérez, Laurent Pasquier, Colin A. Johnson, John B. Wallingford, Valérie Cormier-Daire, Inusha Panigrahi, Equipe GAD (LNC - U1231), Lipides - Nutrition - Cancer [Dijon - U1231] (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Institut d'Astrophysique et de Géophysique [Liège], Université de Liège, FHU TRANSLAD (CHU de Dijon), Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand (CHU Dijon), Centre de génétique - Centre de référence des maladies rares, anomalies du développement et syndromes malformatifs (CHU de Dijon), Lipides - Nutrition - Cancer (U866) (LNC), Université de Bourgogne (UB)-Institut National de la Santé et de la Recherche Médicale (INSERM)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation de Dijon (ENSBANA), Génétique des Anomalies du Développement (GAD), Université de Bourgogne (UB)-IFR100 - Structure fédérative de recherche Santé-STIC, Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Service: neuropédiatrie pathologie du développement, Université Pierre et Marie Curie - Paris 6 (UPMC), University Medical Center [Utrecht], University of Leeds, Radboud University [Nijmegen], Centre de Recherche en Cancérologie de Marseille (CRCM), Aix Marseille Université (AMU)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), CHU Trousseau [APHP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Necker - Enfants Malades [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Centre de Génétique Humaine, Université de Liège-CHU Liège, Service de Génétique, Hôpital de Hautepierre [Strasbourg], Génétique Médicale, Centre hospitalier universitaire de Poitiers (CHU Poitiers)-Centre de Référence Anomalies du Développement Ouest, Laboratory of Human Embryology and Genetics, Institute of Medical Biology, Singapore, Department of Pediatrics, Innsbruck Medical University = Medizinische Universität Innsbruck (IMU), Département de Génétique Médicale, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré, Advanced Pediatric Center (PGIMER), Pediatry center, Pédiatrie Neonatalogie, Centre Hospitalier Général, Brive-la-Gaillarde, Brive-la-Gaillarde, France, Service de Génétique clinique, Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] (CHRU Lille), Dauphine Recherches en Management - MLAB (DRM - MLAB), Dauphine Recherches en Management (DRM), Université Paris Dauphine-PSL, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS), Service de génétique [Rouen], CHU Rouen, Normandie Université (NU)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Department of human genetics, Radboud University Medical Center [Nijmegen]-Nijmegen Centre for Molecular Life Sciences-Institute for Genetic and Metabolic Disorders, Centre de génétique et Centre de référence maladies rares et anomalies du développement et syndromes malformatifs du Centre Est, Département de Génétique et Procréation UF-Hôpital Couple Enfant de Grenoble-CHU Grenoble, Hospital Universitario La Paz, Laboratoire de Génétique Chromosomique et Moléculaire [CHU Dijon], FHU TRANSLAD, Département de Génétique, Department of Medical Genetics, Sanjay Gandhi Post Graduate Institute of Medical Sciences, Lucknow, India, Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement (Inserm U781), Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Imagerie intégrative de la molécule à l'organisme, Institut Curie [Paris]-Institut National de la Santé et de la Recherche Médicale (INSERM), Service d'anatomie et cytologie pathologiques [Rennes] = Anatomy and Cytopathology [Rennes], CHU Pontchaillou [Rennes], Neuropathies héréditaires et rein en développement, Institut National de la Santé et de la Recherche Médicale (INSERM), Unité de génétique médicale, Université Saint-Joseph de Beyrouth (USJ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Imagine - Institut des maladies génétiques (IMAGINE - U1163), Lipides - Nutrition - Cancer [Dijon - U1231] ( LNC ), Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université de Bourgogne ( UB ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Institut National de la Santé et de la Recherche Médicale ( INSERM ), FHU TRANSLAD, Centre Hospitalier Universitaire de Dijon - Hôpital François Mitterrand ( CHU Dijon ), Lipides - Nutrition - Cancer (U866) ( LNC ), Université de Bourgogne ( UB ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement-Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation de Dijon ( ENSBANA ), Génétique des Anomalies du Développement ( GAD ), IFR100 - Structure fédérative de recherche Santé-STIC-Université de Bourgogne ( UB ), Centre National de Génotypage ( CNG ), Commissariat à l'énergie atomique et aux énergies alternatives ( CEA ), Université Pierre et Marie Curie - Paris 6 ( UPMC ), Department of Nephrology and Hypertension, University Medical Center Utrecht, Utrecht, The Netherlands, Section of Ophthalmology and Neurosciences, Leeds Institute of Molecular Medicine, University of Leeds, Leeds, UK, Radboud university [Nijmegen], Centre de Recherche en Cancérologie de Marseille ( CRCM ), Aix Marseille Université ( AMU ) -Institut Paoli-Calmettes-Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Centre National de la Recherche Scientifique ( CNRS ), Service de neuropédiatrie et pathologie du développement, Assistance publique - Hôpitaux de Paris (AP-HP)-CHU Trousseau [APHP], Service de neurométabolisme, Hôpital Necker-Enfants Malades, CHU, Paris, France, CHU de Poitiers-Centre de Référence Anomalies du Développement Ouest, Innsbruck Medical University [Austria] ( IMU ), Assistance publique - Hôpitaux de Paris (AP-HP)-Hôpital Robert Debré, Advanced Pediatric Center ( PGIMER ), Hôpital Jeanne de Flandre [Lille]-Centre Hospitalier Régional Universitaire [Lille] ( CHRU Lille ), Dauphine Recherches en Management - MLAB ( DRM - MLAB ), Dauphine Recherches en Management ( DRM ), Université Paris-Dauphine-Centre National de la Recherche Scientifique ( CNRS ) -Université Paris-Dauphine-Centre National de la Recherche Scientifique ( CNRS ), CHU Rouen-Université de Rouen Normandie ( UNIROUEN ), Normandie Université ( NU ) -Normandie Université ( NU ), Génétique et épigénétique des maladies métaboliques, neurosensorielles et du développement ( Inserm U781 ), Université Paris Descartes - Paris 5 ( UPD5 ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Institut National de la Santé et de la Recherche Médicale ( INSERM ) -INSTITUT CURIE, Service d'anatomie et cytologie pathologiques [Rennes], Université de Rennes 1 ( UR1 ), Université de Rennes ( UNIV-RENNES ) -Université de Rennes ( UNIV-RENNES ) -Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Institut National de la Santé et de la Recherche Médicale ( INSERM ), Université Saint-Joseph de Beyrouth ( USJ ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ), Imagine - Institut des maladies génétiques ( IMAGINE - U1163 ), Centre National de la Recherche Scientifique ( CNRS ) -Institut National de la Santé et de la Recherche Médicale ( INSERM ) -Université Paris Descartes - Paris 5 ( UPD5 ), Centre National de la Recherche Scientifique (CNRS)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Institut Paoli-Calmettes, Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Fédération nationale des Centres de lutte contre le Cancer (FNCLCC)-Aix Marseille Université (AMU), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-CHU Trousseau [APHP], Innsbruck Medical University [Austria] (IMU), Assistance publique - Hôpitaux de Paris (AP-HP) (APHP)-Hôpital Robert Debré, Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL-Centre National de la Recherche Scientifique (CNRS)-Université Paris Dauphine-PSL, Institut Curie-Institut National de la Santé et de la Recherche Médicale (INSERM), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Hôpital Pontchaillou-CHU Pontchaillou [Rennes], Centre National de la Recherche Scientifique (CNRS)-Université Paris Descartes - Paris 5 (UPD5)-Institut National de la Santé et de la Recherche Médicale (INSERM), Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université, Institut National de la Santé et de la Recherche Médicale (INSERM)-Université de Bourgogne (UB)-Ecole Nationale Supérieure de Biologie Appliquée à la Nutrition et à l'Alimentation de Dijon (ENSBANA)-AgroSup Dijon - Institut National Supérieur des Sciences Agronomiques, de l'Alimentation et de l'Environnement, Bruel, Ange Line, Franco, Brunella, Duffourd, Yanni, Thevenon, Julien, Jego, Laurence, Lopez, Estelle, Deleuze, Jean Françoi, Doummar, Diane, Giles, Rachel H, Johnson, Colin A, Huynen, Martijn A, Chevrier, Véronique, Burglen, Lydie, Morleo, Manuela, Desguerres, Isabelle, Pierquin, Geneviève, Doray, Bérénice, Gilbert Dussardier, Brigitte, Reversade, Bruno, Steichen Gersdorf, Elisabeth, Baumann, Clarisse, Panigrahi, Inusha, Fargeot Espaliat, Anne, Dieux, Anne, David, Albert, Goldenberg, Alice, Bongers, Ernie, Gaillard, Dominique, Argente, Jesú, Aral, Bernard, Gigot, Nadège, St Onge, Judith, Birnbaum, Daniel, Phadke, Shubha R, Cormier Daire, Valérie, Eguether, Thibaut, Pazour, Gregory J, Herranz Pérez, Vicente, Goldstein, Jaclyn S, Pasquier, Laurent, Loget, Philippe, Saunier, Sophie, Mégarbané, André, Rosnet, Olivier, Leroux, Michel R, Wallingford, John B, Blacque, Oliver E, Nachury, Maxence V, Attie Bitach, Tania, Rivière, Jean Baptiste, Faivre, Laurence, Thauvin Robinet, Christel, Bruel, Al, Franco, B, Duffourd, Y, Thevenon, J, Jego, L, Lopez, E, Deleuze, Jf, Doummar, D, Giles, Rh, Johnson, Ca, Huynen, Ma, Chevrier, V, Burglen, L, Morleo, M, Desguerres, I, Pierquin, G, Doray, B, Gilbert-Dussardier, B, Reversade, B, Steichen-Gersdorf, E, Baumann, C, Panigrahi, I, Fargeot-Espaliat, A, Dieux, A, David, A, Goldenberg, A, Bongers, E, Gaillard, D, Argente, J, Aral, B, Gigot, N, St-Onge, J, Birnbaum, D, Phadke, Sr, Cormier-Daire, V, Eguether, T, Pazour, Gj, Herranz-Perez, V, Goldstein, J, Pasquier, L, Loget, P, Saunier, S, Megarbane, A, Rosnet, O, Leroux, Mr, Wallingford, Jb, Blacque, Oe, Nachury, Mv, Attie-Bitach, T, Riviere, Jb, Faivre, L, and Thauvin-Robinet, C

Subjects
Male, 0301 basic medicine, Heterozygote, ciliopathie, Oral facial digital, [SDV]Life Sciences [q-bio], [ SDV.BBM.BM ] Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Biology, Ciliopathies, Centriole elongation, 03 medical and health sciences, Intraflagellar transport, Genotype, Genetics, Polycystic kidney disease, medicine, Humans, Abnormalities, Multiple, [SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology, Functional studies, [ SDV.BBM ] Life Sciences [q-bio]/Biochemistry, Molecular Biology, Gene, oral-facial-digital syndromes, Genetics (clinical), ComputingMilieux_MISCELLANEOUS, Encephalocele, Polycystic Kidney Diseases, [ SDV ] Life Sciences [q-bio], ciliopathies, Proteins, Metabolic Disorders Radboud Institute for Molecular Life Sciences [Radboudumc 6], [SDV.BBM.BM]Life Sciences [q-bio]/Biochemistry, Molecular Biology/Molecular biology, Orofaciodigital Syndromes, medicine.disease, 030104 developmental biology, Face, Mutation, Female, Retinitis Pigmentosa, Rare cancers Radboud Institute for Health Sciences [Radboudumc 9], Ciliary Motility Disorders
Abstract

Oral–facial–digital syndromes (OFDS) gather rare genetic disorders characterised by facial, oral and digital abnormalities associated with a wide range of additional features (polycystic kidney disease, cerebral malformations and several others) to delineate a growing list of OFDS subtypes. The most frequent, OFD type I, is caused by a heterozygous mutation in theOFD1gene encoding a centrosomal protein. The wide clinical heterogeneity of OFDS suggests the involvement of other ciliary genes. For 15 years, we have aimed to identify the molecular bases of OFDS. This effort has been greatly helped by the recent development of whole-exome sequencing (WES). Here, we present all our published and unpublished results for WES in 24 cases with OFDS. We identified causal variants in five new genes (C2CD3,TMEM107,INTU,KIAA0753andIFT57) and related the clinical spectrum of four genes in other ciliopathies (C5orf42,TMEM138,TMEM231andWDPCP) to OFDS. Mutations were also detected in two genes previously implicated in OFDS. Functional studies revealed the involvement of centriole elongation, transition zone and intraflagellar transport defects in OFDS, thus characterising three ciliary protein modules: the complex KIAA0753-FOPNL-OFD1, a regulator of centriole elongation; the Meckel-Gruber syndrome module, a major component of the transition zone; and the CPLANE complex necessary for IFT-A assembly. OFDS now appear to be a distinct subgroup of ciliopathies with wide heterogeneity, which makes the initial classification obsolete. A clinical classification restricted to the three frequent/well-delineated subtypes could be proposed, and for patients who do not fit one of these three main subtypes, a further classification could be based on the genotype.

Published
2017
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7. C5orf42 is the major gene responsible for OFD syndrome type VI

Author

Louise Devisme, Jun-ichi Takanashi, Hülya Kayserili, Frédéric Huet, Jelena Martinovic, Catherine Noël, Tania Attié-Bitach, Muriel Holder, Nadia El Khartoufi, Estelle Lopez, Cédric Le Caignec, Jean-Baptiste Rivière, Pascale Kleinfinger, Ferechté Razavi, Hélène Ansart-Franquet, Nadège Gigot, Brunella Franco, Magali Avila, Irahara Kaori, Didier Lacombe, Julien Thevenon, Martine Le Merrer, Bernard Aral, Stanislas Lyonnet, Christel Thauvin-Robinet, Véronique Darmency-Stamboul, Bruno Reversade, Yeliz Güven, Lydie Burglen, Laurence Faivre, Lena Ho, Mohammad Shboul, Other departments, Lopez, E, Thauvin Robinet, C, Reversade, B, Khartoufi, Ne, Devisme, L, Holder, M, Ansart Franquet, H, Avila, M, Lacombe, D, Kleinfinger, P, Kaori, I, Takanashi, Ji, Le Merrer, M, Martinovic, J, Noël, C, Shboul, M, Ho, L, Güven, Y, Razavi, F, Burglen, L, Gigot, N, Darmency Stamboul, V, Thevenon, J, Aral, B, Kayserili, H, Huet, F, Lyonnet, S, Le Caignec, C, Franco, Brunella, Rivière, Jb, Faivre, L, and Attié Bitach, T.

Subjects
Adult, Male, Adolescent, Developmental Disabilities, Hamartoma, Biology, Nervous System Malformations, Microphthalmia, Ciliopathies, Joubert syndrome, Retina, Young Adult, Cerebellar Diseases, Cerebellum, Genetics, medicine, Humans, Abnormalities, Multiple, Exome, Eye Abnormalities, Child, Genetics (clinical), Exome sequencing, Alleles, Polydactyly, Corpus Callosum Agenesis, Membrane Proteins, Sequence Analysis, DNA, Kidney Diseases, Cystic, Orofaciodigital Syndromes, medicine.disease, Ciliopathy, Phenotype, Mutation, Female, Hypothalamic Diseases
Abstract

Oral-facial-digital syndrome type VI (OFD VI) is a recessive ciliopathy defined by two diagnostic criteria: molar tooth sign (MTS) and one or more of the following: (1) tongue hamartoma (s) and/or additional frenula and/or upper lip notch; (2) mesoaxial polydactyly of one or more hands or feet; (3) hypothalamic hamartoma. Because of the MTS, OFD VI belongs to the “Joubert syndrome related disorders”. Its genetic aetiology remains largely unknown although mutations in the TMEM216 gene, responsible for Joubert (JBS2) and Meckel-Gruber (MKS2) syndromes, have been reported in two OFD VI patients. To explore the molecular cause(s) of OFD VI syndrome, we used an exome sequencing strategy in six unrelated families followed by Sanger sequencing. We identified a total of 14 novel mutations in the C5orf42 gene in 9/11 families with positive OFD VI diagnostic criteria including a severe fetal case with microphthalmia, cerebellar hypoplasia, corpus callosum agenesis, polydactyly and skeletal dysplasia. C5orf42 mutations have already been reported in Joubert syndrome confirming that OFD VI and JBS are allelic disorders, thus enhancing our knowledge of the complex, highly heterogeneous nature of ciliopathies.

Published
2014

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