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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. Cerebral dysgenesis does not exclude OFD I syndrome.

Author

Thauvin-Robinet C, Lesca G, Aral B, Gigot N, Lambert S, Gueneau L, Macca M, Franco B, Huet F, Zabot MT, Attié-Bitach T, Attia-Sobol J, and Faivre L

Subjects
Female, Humans, Sequence Analysis, DNA, Sequence Deletion, Brain abnormalities, Orofaciodigital Syndromes classification, Orofaciodigital Syndromes pathology, Proteins genetics
Published
2011
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3. Search for genomic imbalances in a cohort of 20 patients with oral-facial-digital syndromes negative for mutations and large rearrangements in the OFD1 gene.

Author

Thauvin-Robinet C, Callier P, Franco B, Zuffardi O, Payet M, Aral B, Gigot N, Donzel A, Mosca-Boidron AL, Masurel-Paulet A, Huet F, Teyssier JR, Mugneret F, and Faivre L

Subjects
Chromosome Aberrations, Cohort Studies, Comparative Genomic Hybridization, Female, Humans, Mutation genetics, Orofaciodigital Syndromes pathology, Genomic Instability, Orofaciodigital Syndromes genetics, Proteins genetics
Published
2009
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4. Genomic deletions of OFD1 account for 23% of oral-facial-digital type 1 syndrome after negative DNA sequencing.

Author

Thauvin-Robinet C, Franco B, Saugier-Veber P, Aral B, Gigot N, Donzel A, Van Maldergem L, Bieth E, Layet V, Mathieu M, Teebi A, Lespinasse J, Callier P, Mugneret F, Masurel-Paulet A, Gautier E, Huet F, Teyssier JR, Tosi M, Frébourg T, and Faivre L

Subjects
Female, Humans, Polymerase Chain Reaction, Genome, Human genetics, Orofaciodigital Syndromes genetics, Proteins genetics, Sequence Analysis, DNA, Sequence Deletion
Abstract

Oral-facial-digital type I syndrome (OFDI) is characterised by an X-linked dominant mode of inheritance with lethality in males. Clinical features include facial dysmorphism with oral, dental and distal abnormalities, polycystic kidney disease and central nervous system malformations. Considerable allelic heterogeneity has been reported within the OFD1 gene, but DNA bi-directional sequencing of the exons and intron-exon boundaries of the OFD1 gene remains negative in more than 20% of cases. We hypothesized that genomic rearrangements could account for the majority of the remaining undiagnosed cases. Thus, we took advantage of two independent available series of patients with OFDI syndrome and negative DNA bi-directional sequencing of the exons and intron-exon boundaries of the OFD1 gene from two different European labs: 13/36 cases from the French lab; 13/95 from the Italian lab. All patients were screened by a semiquantitative fluorescent multiplex method (QFMPSF) and relative quantification by real-time PCR (qPCR). Six OFD1 genomic deletions (exon 5, exons 1-8, exons 1-14, exons 10-11, exons 13-23 and exon 17) were identified, accounting for 5% of OFDI patients and for 23% of patients with negative mutation screening by DNA sequencing. The association of DNA direct sequencing, QFMPSF and qPCR detects OFD1 alteration in up to 85% of patients with a phenotype suggestive of OFDI syndrome. Given the average percentage of large genomic rearrangements (5%), we suggest that dosage methods should be performed in addition to DNA direct sequencing analysis to exclude the involvement of the OFD1 transcript when there are genetic counselling issues., ((c) 2008 Wiley-Liss, Inc.)

Published
2009
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5. 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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6. The oral-facial-digital syndrome gene C2CD3 encodes a positive regulator of centriole elongation

Author

Laurent Pasquier, Bernard Aral, Jaclyn S Lee, Judith St-Onge, Michel Vekemans, Frédéric Huet, Brunella Franco, Fan Ye, Philippe Loget, Ange-Line Bruel, Arnold Munnich, Nadège Gigot, Carla A.M. Lopes, Sophie Saunier, José Manuel García-Verdugo, Julien Thevenon, Vicente Herranz-Pérez, Susana González-Granero, Laurence Jego, Maxence V. Nachury, André Mégarbané, Jean-Baptiste Rivière, Laurence Faivre, Caroline Alby, Toshinobu Shida, Christel Thauvin-Robinet, Andrew M. Fry, Estelle Lopez, Tania Attié-Bitach, Thauvin Robinet, C, Lee, J, Lopez, E, Herranz Pérez, V, Shida, T, Franco, Brunella, Jego, L, Ye, F, Pasquier, L, Loget, P, Gigot, N, Aral, B, Lopes, Ca, St Onge, J, Bruel, Al, Thevenon, J, González Granero, S, Alby, C, Munnich, A, Vekemans, M, Huet, F, Fry, Am, Saunier, S, Rivière, Jb, Attié Bitach, T, Garcia Verdugo, Jm, Faivre, L, Mégarbané, A, and Nachury, M. V.

Subjects
Male, Microcephaly, Centriole, Microtubule-associated protein, sports, Biology, Ciliopathies, Centriole elongation, Article, Cell Line, Procentriole, Genetics, medicine, Humans, Genetic Predisposition to Disease, Centrioles, Cilium, Proteins, Orofaciodigital Syndromes, medicine.disease, sports.league, HEK293 Cells, Centrosome, Child, Preschool, Microtubule-Associated Proteins
Abstract

Centrioles are microtubule-based, barrel-shaped structures that initiate the assembly of centrosomes and cilia(1,2). How centriole length is precisely set remains elusive. The microcephaly protein CPAP (also known as MCPH6) promotes procentriole growth(3-5), whereas the oral-facial-digital (OFD) syndrome protein OFD1 represses centriole elongation(6,7). Here we uncover a new subtype of OFD with severe microcephaly and cerebral malformations and identify distinct mutations in two affected families in the evolutionarily conserved C2CD3 gene. Concordant with the clinical overlap, C2CD3 colocalizes with OFD1 at the distal end of centrioles, and C2CD3 physically associates with OFD1. However, whereas OFD1 deletion leads to centriole hyperelongation, loss of C2CD3 results in short centrioles without subdistal and distal appendages. Because C2CD3 overexpression triggers centriole hyperelongation and OFD1 antagonizes this activity, we propose that C2CD3 directly promotes centriole elongation and that OFD1 acts as a negative regulator of C2CD3. Our results identify regulation of centriole length as an emerging pathogenic mechanism in ciliopathies.

Published
2014
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7. Detailed clinical, genetic and neuroimaging characterization of OFD VI syndrome

Author

N. Méjean, Nadège Gigot, Lydie Burglen, Estelle Lopez, Valérie Cormier-Daire, Didier Lacombe, Christel Thauvin-Robinet, John Dean, Marie Gonzales, Diana Rodriguez, Brunella Franco, Bérénice Doray, Melissa Crenshaw, Isabelle Desguerres, Patrick Callier, Laurent Pasquier, Tania Attié-Bitach, Frédéric Huet, Bernard Aral, Matthew Pastore, Véronique Darmency-Stamboul, Laurence Faivre, Darmency Stamboul, V, Burglen, L, Lopez, E, Mejean, N, Dean, J, Franco, Brunella, Rodriguez, D, Lacombe, D, Desguerres, I, Cormier Daire, V, Doray, B, Pasquier, L, Gonzales, M, Pastore, M, Crenshaw, Ml, Huet, F, Gigot, N, Aral, B, Callier, P, Faivre, L, Attié Bitach, T, and Thauvin Robinet, C.

Subjects
Molar tooth sign, Neuroimaging, Joubert syndrome, Frameshift mutation, Hypothalamic hamartoma, Genetics, medicine, Clinical genetic, Humans, Child, Mesoaxial polydactyly, Genetics (clinical), Polydactyly, business.industry, Brain, Infant, Proteins, General Medicine, Anatomy, Orofaciodigital Syndromes, medicine.disease, Magnetic Resonance Imaging, stomatognathic diseases, Child, Preschool, Mutation, Female, business, Tomography, X-Ray Computed
Abstract

Oral-facial-digital syndrome type VI (OFD VI) is characterized by the association of malformations of the face, oral cavity and extremities, distinguished from the 12 other OFD syndromes by cerebellar and metacarpal abnormalities. Cerebellar malformations in OFD VI have been described as a molar tooth sign (MTS), thus, including OFD VI among the "Joubert syndrome related disorders" (JSRD). OFD VI diagnostic criteria have recently been suggested: 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 hands or feet; 3) hypothalamic hamartoma. In order to further delineate this rare entity, we present the neurological and radiological data of 6 additional OFD VI patients. All patients presented oral malformations, facial dysmorphism and distal abnormalities including frequent polydactyly (66%), as well as neurological symptoms with moderate to severe mental retardation. Contrary to historically reported patients, mesoaxial polydactyly did not appear to be a predominant clinical feature in OFD VI. Sequencing analyzes of the 14 genes implicated in JSRD up to 2011 revealed only an OFD1 frameshift mutation in one female OFD VI patient, strengthening the link between these two oral-facial-digital syndromes and JSRD.

Published
2013

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