1
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Clément K, Argente J, Haqq A, Chung W, Dollfus H, Forsythe E, Beales P, Martos-Moreno G, Yanovski J, Haws R. Efficacité à long terme du setmélanotide chez des patients souffrant d’un syndrome de Bardet-Biedl. Nephrol Ther 2022. [DOI: 10.1016/j.nephro.2022.07.301] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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2
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Clément K, Argente J, Dollfus H, Han J, Haqq A, Martos-Moreno G, Mittleman R, Stewart M, Webster M, Yanovski J, Yuan G, Haws R. Étude de phase 3 sur l’efficacité de setmélanotide chez des patients ayant un syndrome de Bardet-Biedl : résultats contrôlés par placebo. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.154] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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3
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Argente J, Clément K, Dollfus H, Han J, Haqq A, Martos-Moreno G, Mittleman R, Stewart M, Webster M, Yanovski J, Yuan G, Haws R. Étude de phase 3 sur le setmélanotide chez des patients ayant un syndrome de Bardet-Biedl : résultats contrôlés par placebo. NUTR CLIN METAB 2022. [DOI: 10.1016/j.nupar.2021.12.029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Abstract
Heimler syndrome is a rare syndrome associating sensorineural hearing loss with retinal dystrophy and amelogenesis imperfecta due to PEX1 or PEX6 biallelic pathogenic variations. This syndrome is one of the less severe forms of peroxisome biogenesis disorders. In this chapter, we will review clinical, biological, and genetic knowledges about the Heimler syndrome.
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Affiliation(s)
- S Mechaussier
- Laboratory of Genetics in Ophthalmology (LGO), INSERM UMR1163, Institute of Genetic Diseases, Imagine and Paris University, Paris, France
| | - I Perrault
- Laboratory of Genetics in Ophthalmology (LGO), INSERM UMR1163, Institute of Genetic Diseases, Imagine and Paris University, Paris, France
| | - H Dollfus
- Department of Medical Genetics, Institute of Medical Genetics of Alsace (IGMA), Strasbourg University Hospitals - Hautepierre Hospital, Strasbourg, France.,Laboratory of Medical Genetics, INSERM U1112, Institute of Medical Genetics of Alsace (IGMA), Strasbourg University, Strasbourg, France
| | - A Bloch-Zupan
- Strasbourg University, Faculty of Dental Medicine, Institute for Advanced Study (USIAS), Strasbourg, France.,Strasbourg University Hospitals (HUS), Oral Surgery and Oral Medecine Unit, Dental Clinic, Civil Hospital, Reference Center for Rare Oral and Dental Diseases, O-Rares, Filière Santé Maladies rares TETE COU, European Reference Network ERN CRANIO, Strasbourg, France.,Strasbourg University, Institute of Genetics and Molecular and Cellular Biology (IGBMC), Illkirch, France
| | - N Loundon
- Pediatric ENT Department, Necker-Enfants Malades Hospital, Paris, France.,Reference Center for Rare Diseases "Genetic deafness", Filière Santé Maladies rares SENSGENE, European Reference Network ERN CRANIO, Federation of Genetic, Necker-Enfants Malades Hospital, Paris, France
| | - L Jonard
- Reference Center for Rare Diseases "Genetic deafness", Filière Santé Maladies rares SENSGENE, European Reference Network ERN CRANIO, Federation of Genetic, Necker-Enfants Malades Hospital, Paris, France
| | - S Marlin
- Reference Center for Rare Diseases "Genetic deafness", Filière Santé Maladies rares SENSGENE, European Reference Network ERN CRANIO, Federation of Genetic, Necker-Enfants Malades Hospital, Paris, France. .,Laboratory of Embryology and Genetics of Malformations, INSERM UMR 1163, Institute of Genetic Diseases, Imagine and Paris University, Paris, France.
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5
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Plaisancié J, Tarilonte M, Ramos P, Jeanton-Scaramouche C, Gaston V, Dollfus H, Aguilera D, Kaplan J, Fares-Taie L, Blanco-Kelly F, Villaverde C, Francannet C, Goldenberg A, Arroyo I, Rozet JM, Ayuso C, Chassaing N, Calvas P, Corton M. Implication of non-coding PAX6 mutations in aniridia. Hum Genet 2018; 137:831-846. [PMID: 30291432 DOI: 10.1007/s00439-018-1940-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/23/2018] [Indexed: 01/14/2023]
Abstract
There is an increasing implication of non-coding regions in pathological processes of genetic origin. This is partly due to the emergence of sophisticated techniques that have transformed research into gene expression by allowing a more global understanding of the genome, both at the genomic, epigenomic and chromatin levels. Here, we implemented the analysis of PAX6, whose coding loss-of-function variants are mainly implied in aniridia, by studying its non-coding regions (untranslated regions, introns and cis-regulatory sequences). In particular, we have taken advantage of the development of high-throughput approaches to screen the upstream and downstream regulatory regions of PAX6 in 47 aniridia patients without identified mutation in the coding sequence. This was made possible through the use of custom targeted resequencing and/or CGH array to analyze the entire PAX6 locus on 11p13. We found candidate variants in 30 of the 47 patients. 9/30 correspond to the well-known described 3' deletions encompassing SIMO and other enhancer elements. In addition, we identified numerous different variants in various non-coding regions, in particular untranslated regions. Among these latter, most of them demonstrated an in vitro functional effect using a minigene strategy, and 12/21 are thus considered as causative mutations or very likely to explain the phenotypes. This new analysis strategy brings molecular diagnosis to more than 90% of our aniridia patients. This study revealed an outstanding mutation pattern in non-coding PAX6 regions confirming that PAX6 remains the major gene for aniridia.
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Affiliation(s)
- Julie Plaisancié
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France.
- INSERM U1056, Université Toulouse III, Toulouse, France.
| | - M Tarilonte
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - P Ramos
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - C Jeanton-Scaramouche
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
| | - V Gaston
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
| | - H Dollfus
- Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - D Aguilera
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - J Kaplan
- Laboratoire de Génétique Ophtalmologique INSERM U1163, Institut Imagine, Paris, France
| | - L Fares-Taie
- Laboratoire de Génétique Ophtalmologique INSERM U1163, Institut Imagine, Paris, France
| | - F Blanco-Kelly
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - C Villaverde
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - C Francannet
- Service de Génétique Médicale, CHU Estaing, Clermont-Ferrand, France
| | - A Goldenberg
- Service de Génétique, CHU de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - I Arroyo
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
- Department of Genetics, Hospital of Cáceres, Cáceres, Spain
| | - J M Rozet
- Laboratoire de Génétique Ophtalmologique INSERM U1163, Institut Imagine, Paris, France
| | - C Ayuso
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - N Chassaing
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
- INSERM U1056, Université Toulouse III, Toulouse, France
| | - P Calvas
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
- INSERM U1056, Université Toulouse III, Toulouse, France
| | - M Corton
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
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6
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Plaisancié J, Ragge N, Dollfus H, Kaplan J, Lehalle D, Francannet C, Morin G, Colineaux H, Calvas P, Chassaing N. FOXE3
mutations: genotype-phenotype correlations. Clin Genet 2018; 93:837-845. [DOI: 10.1111/cge.13177] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2017] [Revised: 08/21/2017] [Accepted: 08/22/2017] [Indexed: 01/25/2023]
Affiliation(s)
- J. Plaisancié
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse; Toulouse France
- INSERM U1056; Université Toulouse III; Toulouse France
| | - N.K. Ragge
- Faculty of Health and Life Sciences; Oxford Brookes University; Oxford UK
- West Midlands Regional Genetics Service; Birmingham Women and Children’s NHS Foundation Trust; Birmingham UK
| | - H. Dollfus
- Centre de Référence pour les affections rares en génétique ophtalmologique; CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg; Strasbourg France
| | - J. Kaplan
- INSERM U1163; Génétique Ophtalmologique; Paris France
| | - D. Lehalle
- Centre de Génétique et Centre de Référence "Anomalies du Développement et Syndromes Malformatifs; Hôpital d'Enfants; Dijon France
| | - C. Francannet
- Service de Génétique Médicale; CHU Estaing; Clermont-Ferrand France
| | - G. Morin
- Service de génétique; Hôpital nord d’Amiens; Amiens France
| | - H. Colineaux
- Department of Epidemiology, Health Economics and Public Health; Toulouse University Hospital; France
- LEASP UMR1027, INSERM; Université Toulouse III; Toulouse France
| | - P. Calvas
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse; Toulouse France
- INSERM U1056; Université Toulouse III; Toulouse France
| | - N. Chassaing
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse; Toulouse France
- INSERM U1056; Université Toulouse III; Toulouse France
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7
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Burin des Roziers C, Rothschild P, Barjol A, Clément C, Edelson C, Derrien S, Metge F, Michau S, Robert M, Prévot C, Dollfus H, Layet V, Delphin N, Bernardelli M, Ghiotti T, Hanein S, Fourrage C, Bonnefont J, Rozet J, Brézin A, Caputo G, Brémond-Gignac D, Valleix S. Targeted NGS: an effective approach for molecular diagnosis of hereditary vitreoretinopathies. Acta Ophthalmol 2017. [DOI: 10.1111/j.1755-3768.2017.02361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- C. Burin des Roziers
- Laboratoire de Génétique Ophtalmologique; Institut Imagine - Institut des maladies génétiques; Paris France
| | - P.R. Rothschild
- Département d'ophtalmologie; Groupe Hospitalier Cochin-Hôtel-Dieu; Paris France
| | - A. Barjol
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - C.A. Clément
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - C. Edelson
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - S. Derrien
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - F. Metge
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - S. Michau
- Service d'ophtalmologie; Centre Hospitalier Universitaire de Montpellier; Montpellier France
| | - M. Robert
- Service d'ophtalmologie; Hôpital Necker - Enfants malades; Paris France
| | - C. Prévot
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - H. Dollfus
- Centre Hospitalier Universitaire de Strasbourg; Centre de référence pour les Affections Rares en Génétique Ophtalmologique CARGO; Strasbourg France
| | - V. Layet
- Groupe Hospitalier du Havre; Service de génétique clinique; Le Havre France
| | - N. Delphin
- Service de génétique moléculaire; Hôpital Necker - Enfants malades; Paris France
| | - M. Bernardelli
- Service de génétique moléculaire; Hôpital Necker - Enfants malades; Paris France
| | - T. Ghiotti
- Service de génétique moléculaire; Groupe Hospitalier Cochin-Hôtel-Dieu; Paris France
| | - S. Hanein
- Plateforme de génomique; Institut Imagine - Institut des maladies génétiques; Paris France
| | - C. Fourrage
- Service de génétique moléculaire; Hôpital Necker - Enfants malades; Paris France
| | - J.P. Bonnefont
- Service de génétique moléculaire; Hôpital Necker - Enfants malades; Paris France
| | - J.M. Rozet
- Laboratoire de Génétique Ophtalmologique; Institut Imagine - Institut des maladies génétiques; Paris France
| | - A. Brézin
- Département d'ophtalmologie; Groupe Hospitalier Cochin-Hôtel-Dieu; Paris France
| | - G. Caputo
- Service d'ophtalmologie; Fondation Rothschild; Paris France
| | - D. Brémond-Gignac
- Service d'ophtalmologie; Hôpital Necker - Enfants malades; Paris France
| | - S. Valleix
- Service de génétique moléculaire; Hôpital Necker - Enfants malades; Paris France
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8
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Tardieu C, Jung S, Niederreither K, Prasad M, Hadj-Rabia S, Philip N, Mallet A, Consolino E, Sfeir E, Noueiri B, Chassaing N, Dollfus H, Manière M, Bloch-Zupan A, Clauss F. Dental and extra-oral clinical features in 41 patients with WNT10A
gene mutations: A multicentric genotype-phenotype study. Clin Genet 2017; 92:477-486. [DOI: 10.1111/cge.12972] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Revised: 01/11/2017] [Accepted: 01/16/2017] [Indexed: 11/27/2022]
Affiliation(s)
- C. Tardieu
- ADES UMR 7268, Hôpital Timone, Service Odontologie; Aix Marseille University, APHM; Marseille France
| | - S. Jung
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
| | - K. Niederreither
- CNRS UMR7104, INSERM U964; Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg; Illkirch France
| | - M. Prasad
- Medical Genetics Laboratory, INSERM U1112, Translational Medicine federation (FMTS); Alsace Medical Genetics Institute; Strasbourg France
| | - S. Hadj-Rabia
- Reference Center for Genodermatosis; Necker Hospital, AP-HP; Paris France
| | - N. Philip
- INSERM GMGF, UMR-S910; Aix-Marseille University; Marseille France
- Department of Medical Genetics, Reference Center for Developmental Anomalies; APHM, Hôpital Timone; Marseille France
| | - A. Mallet
- Department of Medical Genetics, Reference Center for Developmental Anomalies; APHM, Hôpital Timone; Marseille France
| | - E. Consolino
- Department of Medical Genetics, Reference Center for Developmental Anomalies; APHM, Hôpital Timone; Marseille France
| | - E. Sfeir
- Department of Pediatric Dentistry; Libanese University; Beyrouth Lebanon
| | - B. Noueiri
- Department of Pediatric Dentistry; Libanese University; Beyrouth Lebanon
| | - N. Chassaing
- Department of Medical Genetics; University Hospital; Toulouse France
| | - H. Dollfus
- Medical Genetics Laboratory, INSERM U1112, Translational Medicine federation (FMTS); Alsace Medical Genetics Institute; Strasbourg France
| | - M.C. Manière
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
- INSERM Unit UMR 1109; Osteoarticular and Dental Regenerative Nanomedicine; Strasbourg France
| | - A. Bloch-Zupan
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
- CNRS UMR7104, INSERM U964; Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg; Illkirch France
| | - F. Clauss
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, O Rares; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Faculté de Chirurgie Dentaire; Université de Strasbourg; Strasbourg France
- CNRS UMR7104, INSERM U964; Institut de Génétique et de Biologie Moléculaire and Cellulaire, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg; Illkirch France
- INSERM Unit UMR 1109; Osteoarticular and Dental Regenerative Nanomedicine; Strasbourg France
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Abstract
Amelogenesis imperfecta (AI) is a clinically and genetically heterogeneous group of diseases characterized by enamel defects. The authors have identified a large consanguineous Moroccan family segregating different clinical subtypes of hypoplastic and hypomineralized AI in different individuals within the family. Using targeted next-generation sequencing, the authors identified a novel heterozygous nonsense mutation in COL17A1 (c.1873C>T, p.R625*) segregating with hypoplastic AI and a novel homozygous 8-bp deletion in C4orf26 (c.39_46del, p.Cys14Glyfs*18) segregating with hypomineralized-hypoplastic AI in this family. This study highlights the phenotypic and genotypic heterogeneity of AI that can exist even within a single consanguineous family. Furthermore, the identification of novel mutations in COL17A1 and C4orf26 and their correlation with distinct AI phenotypes can contribute to a better understanding of the pathophysiology of AI and the contribution of these genes to amelogenesis.
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Affiliation(s)
- M K Prasad
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
| | - S Laouina
- Department of Pediatric Dentistry, Faculty of Dental Medicine, Mohammed V University, Rabat, Morocco
| | - M El Alloussi
- Department of Pediatric Dentistry, Faculty of Dental Medicine, Mohammed V University, Rabat, Morocco
| | - H Dollfus
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Fédération de Médecine Translationnelle de Strasbourg, Université de Strasbourg, Strasbourg, France
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique, Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - A Bloch-Zupan
- Faculté de Chirurgie Dentaire, Université de Strasbourg, Strasbourg, France
- Pôle de Médecine et Chirurgie Bucco-Dentaires, Centre de Référence des Manifestations Odontologiques des Maladies Rares, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Institut de Génétique et de Biologie Moléculaire and Cellulaire, CNRS UMR7104, INSERM U964, Centre Européen de Recherche en Biologie et en Médecine, Université de Strasbourg, Illkirch, France
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10
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Goussot R, Prasad M, Stoetzel C, Lenormand C, Dollfus H, Lipsker D. Cancer pancréatique et poïkilodermie fibrosante héréditaire par mutation du gène FAM111B : coïncidence ou prédisposition ? Ann Dermatol Venereol 2016. [DOI: 10.1016/j.annder.2016.09.421] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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11
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Braun JJ, Noblet V, Kremer S, Molière S, Dollfus H, Marion V, Goetz N, Muller J, Riehm S. Value of MRI olfactory bulb evaluation in the assessment of olfactory dysfunction in Bardet-Biedl syndrome. Clin Genet 2016; 90:79-83. [PMID: 26586152 DOI: 10.1111/cge.12697] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 11/16/2015] [Accepted: 11/16/2015] [Indexed: 11/27/2022]
Abstract
Olfactory bulb (OB) volume evaluation by magnetic resonance imaging (MRI) has been demonstrated to be related to olfactory dysfunction in many different diseases. Olfactory dysfunction is often overlooked in Bardet-Biedl syndrome (BBS) patients and is rarely objectively evaluated by MRI. We present a series of 20 BBS patients with olfactory dysfunction. The OB was evaluated separately and blindly by two radiologists (SR and SM) with 3 Tesla MRI imaging comparatively to 12 normal control subjects by global visual evaluation and by quantitative measurement of OB volume. In the 12 control cases OB visual evaluation was considered as normal in all cases for radiologist (SR) and in 10 cases for radiologist (SM). In the 20 BBS patients, OB visual evaluation was considered as abnormal in 18 cases for SR and in all cases for SM. OB volumetric evaluation for SR and SM in BBS patients was able to provide significant correlation between BBS and olfactory dysfunction. This study indicates that OB volume evaluation by MRI imaging like structural MRI scan for gray matter modifications demonstrates that olfactory dysfunction in BBS patients is a constant and cardinal symptom integrated in a genetical syndrome with peripheral and central olfactory structure alterations.
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Affiliation(s)
- J J Braun
- Service ORL-CCF, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - V Noblet
- Laboratoire ICUBE, UMR CNRS 7357, Strasbourg, France
| | - S Kremer
- Laboratoire ICUBE, UMR CNRS 7357, Strasbourg, France.,Service de Radiologie 2, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - S Molière
- Service de Radiologie 2, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - H Dollfus
- Service de Génétique Médicale, centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - V Marion
- Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - N Goetz
- Service de Génétique Médicale, centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - J Muller
- Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.,Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - S Riehm
- Service de Radiologie 1, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
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12
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Moulinas C, Dollfus H, Lipsker D. Troubles pigmentaires de l’enfant : étude de 108 cas. Ann Dermatol Venereol 2015. [DOI: 10.1016/j.annder.2015.10.245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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13
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Scerbo M, Costa F, Obringer C, Dollfus H, Marion V. The study of a total and two hypothalamic-specific BBS10 knockout models highlights the importance of systemic inactivation in the obese phenotype in Bardet Biedl Syndrome. Cilia 2015. [PMCID: PMC4518618 DOI: 10.1186/2046-2530-4-s1-p5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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14
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Craene JD, Bär S, Laporte J, Marion V, Dollfus H, Friant S. Yeast as a simple eukaryotic model to study human diseases linked to membrane trafficking. Cilia 2015. [PMCID: PMC4518621 DOI: 10.1186/2046-2530-4-s1-p31] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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15
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Moulinas C, Dollfus H, Lipsker D. [Leucoderma in children: Review of the literature]. Ann Dermatol Venereol 2015; 142:399-409. [PMID: 25952794 DOI: 10.1016/j.annder.2015.01.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2014] [Revised: 11/25/2014] [Accepted: 01/06/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Leucoderma is a frequent presenting complaint in children and it is sometimes difficult to make a definite diagnostic during the first consultation. The aim of this study is to analyse the diagnoses associated with leucoderma in children in order to propose a practical approach to their differential diagnosis. MATERIAL AND METHODS We performed a review of the literature using the keywords "leucoderma children review", "leucoderma Ito" and "nevus depigmentosus" in the Medline database. All relevant articles were included. RESULTS Four hundred and thirty-five articles were retrieved and 179 were analysed. A clinical approach was proposed in 6 articles and investigations in 15 articles. DISCUSSION Causal diagnosis of leucoderma may frequently be made on clinical grounds by determining the age of onset and distribution of lesions. Nevertheless, some situations require investigation. The literature is limited regarding clinical approaches and examinations in leucoderma. Herein, we present a systematic clinical and laboratory approach to the differential diagnosis of these skin disorders.
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Affiliation(s)
- C Moulinas
- Clinique dermatologique de Strasbourg, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67091 Strasbourg cedex, France
| | - H Dollfus
- Service de génétique médicale, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67091 Strasbourg cedex, France
| | - D Lipsker
- Clinique dermatologique de Strasbourg, hôpitaux universitaires de Strasbourg, 1, place de l'Hôpital, 67091 Strasbourg cedex, France.
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16
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Chaussenot A, Rouzier C, Quere M, Plutino M, Ait-El-Mkadem S, Bannwarth S, Barth M, Dollfus H, Charles P, Nicolino M, Chabrol B, Vialettes B, Paquis-Flucklinger V. Mutation update and uncommon phenotypes in a French cohort of 96 patients with WFS1-related disorders. Clin Genet 2014; 87:430-9. [PMID: 24890733 DOI: 10.1111/cge.12437] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 05/09/2014] [Accepted: 05/26/2014] [Indexed: 11/29/2022]
Abstract
WFS1 mutations are responsible for Wolfram syndrome (WS) characterized by juvenile-onset diabetes mellitus and optic atrophy, and for low-frequency sensorineural hearing loss (LFSNHL). Our aim was to analyze the French cohort of 96 patients with WFS1-related disorders in order (i) to update clinical and molecular data with 37 novel affected individuals, (ii) to describe uncommon phenotypes and, (iii) to precise the frequency of large-scale rearrangements in WFS1. We performed quantitative polymerase chain reaction (PCR) in 13 patients, carrying only one heterozygous variant, to identify large-scale rearrangements in WFS1. Among the 37 novel patients, 15 carried 15 novel deleterious putative mutations, including one large deletion of 17,444 base pairs. The analysis of the cohort revealed unexpected phenotypes including (i) late-onset symptoms in 13.8% of patients with a probable autosomal recessive transmission; (ii) two siblings with recessive optic atrophy without diabetes mellitus and, (iii) six patients from four families with dominantly-inherited deafness and optic atrophy. We highlight the expanding spectrum of WFS1-related disorders and we show that, even if large deletions are rare events, they have to be searched in patients with classical WS carrying only one WFS1 mutation after sequencing.
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Affiliation(s)
- A Chaussenot
- Department of Medical Genetics, National Centre for Mitochondrial Diseases, Nice Teaching Hospital, Nice, France; IRCAN UMR CNRS 7284/INSERM U1081/UNS, School of Medicine, Nice Sophia-Antipolis University, Nice, France
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17
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Braun JJ, Noblet V, Durand M, Scheidecker S, Zinetti-Bertschy A, Foucher J, Marion V, Muller J, Riehm S, Dollfus H, Kremer S. Olfaction evaluation and correlation with brain atrophy in Bardet-Biedl syndrome. Clin Genet 2014; 86:521-9. [DOI: 10.1111/cge.12391] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 03/26/2014] [Accepted: 03/27/2014] [Indexed: 11/26/2022]
Affiliation(s)
- J.-J. Braun
- Service ORL-CCF; Hôpitaux Universitaires de Strasbourg; Strasbourg France
| | - V. Noblet
- Laboratoire ICUBE, UMR CNRS 7357; Université de Strasbourg; Strasbourg France
| | - M. Durand
- Service de Génétique Médicale, Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO); Hôpitaux Universitaires de Strasbourg; Strasbourg France
| | - S. Scheidecker
- Service de Génétique Médicale, Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO); Hôpitaux Universitaires de Strasbourg; Strasbourg France
| | - A. Zinetti-Bertschy
- Pôle de Psychiatrie et Santé Mentale, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
- Laboratoire de Neuropsychologie cognitive et physiopathologie de la schizophrénie, INSERM U1114, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
| | - J. Foucher
- Laboratoire ICUBE, UMR CNRS 7357; Université de Strasbourg; Strasbourg France
- Pôle de Psychiatrie et Santé Mentale, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
| | - V. Marion
- Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
| | - J. Muller
- Laboratoire ICUBE, UMR CNRS 7357; Université de Strasbourg; Strasbourg France
- Laboratoire de Diagnostic Génétique; Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), UMR 7104 and INSERM U964; Université de Strasbourg; Strasbourg France
| | - S. Riehm
- Service de Radiologie 1, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
| | - H. Dollfus
- Service de Génétique Médicale, Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO); Hôpitaux Universitaires de Strasbourg; Strasbourg France
- Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
| | - S. Kremer
- Laboratoire ICUBE, UMR CNRS 7357; Université de Strasbourg; Strasbourg France
- Service de Radiologie 2, Hôpitaux Universitaires de Strasbourg, Fédération de Médecine Translationnelle de Strasbourg (FMTS); Université de Strasbourg; Strasbourg France
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18
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Sathya Priya C, Sen P, Umashankar V, Gupta N, Kabra M, Kumaramanickavel G, Stoetzel C, Dollfus H, Sripriya S. Mutation spectrum in BBS genes guided by homozygosity mapping in an Indian cohort. Clin Genet 2014; 87:161-6. [PMID: 24400638 DOI: 10.1111/cge.12342] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2013] [Revised: 01/06/2014] [Accepted: 01/06/2014] [Indexed: 11/29/2022]
Abstract
Bardet-Biedl syndrome (BBS), a ciliopathy disorder with pleiotropic effect manifests primarily as retinal degeneration along with renal insufficiency, polydactyly and obesity. In this study, we have performed homozygosity mapping using NspI 250K affymetrix gene chip followed by mutation screening of the candidate genes located in the homozygous blocks. These regions are prioritized based on the block length and candidature of the genes in BBS and other ciliopathies. Gene alterations in known BBS (22) and other ciliopathy genes such as ALMS1 (2) were seen in 24 of 30 families (80%). Mutations in BBS3 gene, inclusive of a novel recurrent mutation (p.I91T) accounted for 18% of the identified variations. Disease associated polymorphisms p.S70N (BBS2), rs1545 and rs1547 (BBS6) were also observed. This is the first study in Indian BBS patients and homozygosity mapping has proved to be an effective tool in prioritizing the candidate genes in consanguineous pedigrees. The study reveals a different mutation profile in the ciliopathy genes in Indian population and implication of novel loci/genes in 20% of the study group.
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Affiliation(s)
- C Sathya Priya
- SN ONGC Department of Genetics and Molecular Biology, Vision Research Foundation, Chennai, Tamilnadu, India; School of Chemical engineering and Biotechnology, SASTRA University, Thanjavur, Tamilnadu, India
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19
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Chassaing N, Causse A, Vigouroux A, Delahaye A, Alessandri JL, Boespflug-Tanguy O, Boute-Benejean O, Dollfus H, Duban-Bedu B, Gilbert-Dussardier B, Giuliano F, Gonzales M, Holder-Espinasse M, Isidor B, Jacquemont ML, Lacombe D, Martin-Coignard D, Mathieu-Dramard M, Odent S, Picone O, Pinson L, Quelin C, Sigaudy S, Toutain A, Thauvin-Robinet C, Kaplan J, Calvas P. Molecular findings and clinical data in a cohort of 150 patients with anophthalmia/microphthalmia. Clin Genet 2013; 86:326-34. [PMID: 24033328 DOI: 10.1111/cge.12275] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2013] [Revised: 09/03/2013] [Accepted: 09/05/2013] [Indexed: 11/27/2022]
Abstract
Anophthalmia and microphthalmia (AM) are the most severe malformations of the eye, corresponding respectively to reduced size or absent ocular globe. Wide genetic heterogeneity has been reported and different genes have been demonstrated to be causative of syndromic and non-syndromic forms of AM. We screened seven AM genes [GDF6 (growth differentiation factor 6), FOXE3 (forkhead box E3), OTX2 (orthodenticle protein homolog 2), PAX6 (paired box 6), RAX (retina and anterior neural fold homeobox), SOX2 (SRY sex determining region Y-box 2), and VSX2 (visual system homeobox 2 gene)] in a cohort of 150 patients with isolated or syndromic AM. The causative genetic defect was identified in 21% of the patients (32/150). Point mutations were identified by direct sequencing of these genes in 25 patients (13 in SOX2, 4 in RAX, 3 in OTX2, 2 in FOXE3, 1 in VSX2, 1 in PAX6, and 1 in GDF6). In addition eight gene deletions (five SOX2, two OTX2 and one RAX) were identified using a semi-quantitative multiplex polymerase chain reaction (PCR) [quantitative multiplex PCR amplification of short fluorescent fragments (QMPSF)]. The causative genetic defect was identified in 21% of the patients. This result contributes to our knowledge of the molecular basis of AM, and will facilitate accurate genetic counselling.
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Affiliation(s)
- N Chassaing
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France; Université Paul-Sabatier Toulouse III, Toulouse, France
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20
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Fradin M, Merklen-Djafri C, Perrigouard C, Aral B, Muller J, Stoetzel C, Frouin E, Flori E, Doray B, Dollfus H, Lipsker D. Long-term follow-up and molecular characterization of a patient with a RECQL4 mutation spectrum disorder. Dermatology 2013; 226:353-7. [PMID: 23899764 DOI: 10.1159/000351311] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2012] [Accepted: 03/25/2013] [Indexed: 11/19/2022] Open
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.
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Affiliation(s)
- M Fradin
- Service de Génétique Médicale, CHU de Rennes; Rennes, France
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21
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Schaefer E, Lauer J, Durand M, Pelletier V, Obringer C, Claussmann A, Braun JJ, Redin C, Mathis C, Muller J, Schmidt-Mutter C, Flori E, Marion V, Stoetzel C, Dollfus H. Mesoaxial polydactyly is a major feature in Bardet-Biedl syndrome patients with LZTFL1 (BBS17) mutations. Clin Genet 2013; 85:476-81. [PMID: 23692385 DOI: 10.1111/cge.12198] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2013] [Revised: 05/16/2013] [Accepted: 05/16/2013] [Indexed: 10/26/2022]
Abstract
Ciliopathies are heterogeneous disorders sharing different clinical signs due to a defect at the level of the primary cilia/centrosome complex. Postaxial polydactyly is frequently reported in ciliopathies, especially in Bardet-Biedl syndrome (BBS). Clinical features and genetic results observed in a pair of dizygotic twins with BBS are reported. The following manifestations were present: retinitis pigmentosa, bilateral insertional polydactyly, cognitive impairment and renal dysfunction. X-rays of the hands confirmed the presence of a 4th mesoaxial extra-digit with Y-shaped metacarpal bones. The sequencing of LZTFL1 identified a missense mutation (NM_020347.2: p.Leu87Pro; c.260T>C) and a nonsense mutation (p.Glu260*; c.778G>T), establishing a compound heterozygous status for the twins. A major decrease of LZTFL1 transcript and protein was observed in the patient's fibroblasts. This is the second report of LZTFL1 mutations in BBS patients confirming LZTFL1 as a BBS gene. Interestingly, the only two families reported in literature thus far with LZTFL1 mutations have in common mesoaxial polydactyly, a very uncommon feature for BBS. This special subtype of polydactyly in BBS patients is easily identified on clinical examination and prompts for priority sequencing of LZTFL1 (BBS17).
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Affiliation(s)
- E Schaefer
- Laboratoire de Génétique Médicale, INSERM U1112, Faculté de Médecine de Strasbourg, Universitaires de Strasbourg, Strasbourg, France
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22
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M'hamdi O, Redin C, Stoetzel C, Ouertani I, Chaabouni M, Maazoul F, M'rad R, Mandel JL, Dollfus H, Muller J, Chaabouni H. Clinical and genetic characterization of Bardet-Biedl syndrome in Tunisia: defining a strategy for molecular diagnosis. Clin Genet 2013; 85:172-7. [PMID: 23432027 DOI: 10.1111/cge.12129] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2012] [Revised: 02/18/2013] [Accepted: 02/18/2013] [Indexed: 01/11/2023]
Abstract
Bardet-Biedl syndrome (BBS, OMIM 209900) is a rare genetic disorder characterized by obesity, retinitis pigmentosa, post axial polydactyly, cognitive impairment, renal anomalies and hypogonadism. The aim of this study is to provide a comprehensive clinical and molecular analysis of a cohort of 11 Tunisian BBS consanguineous families in order to give insight into clinical and genetic spectrum and the genotype-phenotype correlations. Molecular analysis using combined sequence capture and high-throughput sequencing of 30 ciliopathies genes revealed 11 mutations in 11 studied families. Five mutations were novel and six were previously described. Novel mutations included c.1110G>A and c.39delA (p.G13fs*41) in BBS1, c.115+5G>A in BBS2, c.1272+1G>A in BBS6, c.1181_1182insGCATTTATACC in BBS10 (p.S396Lfs*6). Described mutations included c.436C>T (p.R146*) and c.1473+4A>G in BBS1, c.565C> (p.R189*) in BBS2, deletion of exons 4-6 in BBS4, c.149T>G (p.L50R) in BBS5, and c.459+1G>A in BBS8; most frequent mutations were described in BBS1 (4/11, 37%) and BBS2 (2/11, 18%) genes. No phenotype-genotype correlation was evidenced. This data expands the mutations profile of BBS genes in Tunisia and suggests a divergence of the genetic spectrum comparing Tunisian and other populations.
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Affiliation(s)
- O M'hamdi
- Faculté de médecine de Tunis, Université de Tunis El-Manar, Tunis, Tunisie
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23
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Kaplan J, Rozet JM, Gerber S, Camuzat A, Souïed E, Bonneau D, Larget-Piet D, Dollfus H, Dufier JL, Briard ML, Frézal J, Munnich A. Des gènes pour les dystrophies rétiniennes des enfants. Med Sci (Paris) 2013. [DOI: 10.4267/10608/2212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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de Melo C, Mockel A, Stoetzel C, Marion V, Dollfus H. Kidney involvement in Bardet-Biedl syndrome: urinary concentrating defects highlight the major role of primary cilium in water reabsorption. Cilia 2012. [PMCID: PMC3555786 DOI: 10.1186/2046-2530-1-s1-o5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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25
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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, Attié-Bitach T. OFD1 mutations in males: phenotypic spectrum and ciliary basal body docking impairment. Clin Genet 2012; 84:86-90. [PMID: 23036093 DOI: 10.1111/cge.12013] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 08/22/2012] [Accepted: 09/04/2012] [Indexed: 12/30/2022]
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26
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Doray B, Badila-Timbolschi D, Schaefer E, Fattori D, Monga B, Dott B, Favre R, Kohler M, Nisand I, Viville B, Kauffmann I, Bruant-Rodier C, Grollemund B, Rinkenbach R, Astruc D, Gasser B, Lindner V, Marcellin L, Flori E, Girard-Lemaire F, Dollfus H. Épidémiologie des fentes labio-palatines : expérience du Registre de malformations congénitales d’Alsace entre 1995 et 2006. Arch Pediatr 2012; 19:1021-9. [DOI: 10.1016/j.arcped.2012.07.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2011] [Revised: 05/25/2012] [Accepted: 07/04/2012] [Indexed: 11/15/2022]
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27
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Ayrignac X, Liauzun C, Lenaers G, Renard D, Amati-Bonneau P, de Sèze J, Dollfus H, Hamel C, Bonneau D, Labauge P. OPA3--related autosomal dominant optic atrophy and cataract with ataxia and areflexia. Eur Neurol 2012; 68:108-10. [PMID: 22797356 DOI: 10.1159/000339310] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2012] [Accepted: 05/06/2012] [Indexed: 11/19/2022]
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28
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Leger S, Balguerie X, Goldenberg A, Drouin-Garraud V, Amstutz-Montadert I, Cabot A, Joly P, Holder M, Jamieson R, Krause A, Baumann C, Chen H, Nunes L, Dollfus H, Goossens M, Pingault V. Troubles pigmentaires liés à des mutations non tronquantes du domaine basique de MITF. Ann Dermatol Venereol 2011. [DOI: 10.1016/j.annder.2011.09.067] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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29
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Aliferis K, Hellé S, Gyapay G, Duchatelet S, Stoetzel C, Mandel JL, Dollfus H. Differentiating Alström from Bardet-Biedl syndrome (BBS) using systematic ciliopathy genes sequencing. Ophthalmic Genet 2011; 33:18-22. [PMID: 22004009 DOI: 10.3109/13816810.2011.620055] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
INTRODUCTION Early onset retinal degeneration associated with obesity can present a diagnostic challenge in paediatric ophthalmology practice. Clinical overlap between Bardet-Biedl syndrome (BBS) and Alström syndrome has been described, although the two entities are genetically distinct. To date, 16 genes are known to be associated with BBS (BBS1-16) and only one gene has been identified for Alström syndrome (ALMS1). MATERIALS AND METHODS In collaboration with the French National Center for Sequencing (CNS, Evry), all coding exons and flanking introns were sequenced for 27 ciliopathy genes (BBS1-12, MGC1203, TTC21b, AHI1, NPHP2-8 (NPHP6=BBS14), MKS1(BBS13), MKS3, C2ORF86, SDCCAG8, ALMS1) in 96 patients referred with a clinical diagnosis of BBS. ALMS1 gene analysis included sequencing of all coding exons. RESULTS BBS known gene mutations were found in 44 patients (36 with two mutations and 8 heterozygous). ALMS1 mutations were found in four cases. The rate of ALMS1 mutations among patients suspected of having BBS was 4.2%. DISCUSSION Clinically, all four patients presented early-onset severe retinal degeneration with congenital nystagmus associated with obesity. The difficult early differential diagnosis between the two syndromes is outlined. One mutation had already been reported (c.11310delAGAG/p.R3770fsX) and three were novel (c.2293C > T/p.Q765X, c.6823insA/p.R2275fsX, c.9046delA/p.N3016fsX). CONCLUSIONS Ciliopathy genes sequencing can be very helpful in providing a timely diagnosis in this group of patients, hence appropriate genetic counselling for families and adequate medical follow-up for affected children.
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Affiliation(s)
- K Aliferis
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique, CARGO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
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Schaefer E, Zaloszyc A, Lauer J, Durand M, Stutzmann F, Perdomo-Trujillo Y, Redin C, Bennouna Greene V, Toutain A, Perrin L, Gérard M, Caillard S, Bei X, Lewis RA, Christmann D, Letsch J, Kribs M, Mutter C, Muller J, Stoetzel C, Fischbach M, Marion V, Katsanis N, Dollfus H. Mutations in SDCCAG8/NPHP10 Cause Bardet-Biedl Syndrome and Are Associated with Penetrant Renal Disease and Absent Polydactyly. Mol Syndromol 2011; 1:273-281. [PMID: 22190896 DOI: 10.1159/000331268] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/23/2011] [Indexed: 11/19/2022] Open
Abstract
The ciliopathies are an expanding group of disorders caused by mutations in genes implicated in the biogenesis and function of primary cilia. Bardet-Biedl syndrome (BBS) is a model ciliopathy characterized by progressive retinal degeneration, obesity, polydactyly, cognitive impairment, kidney anomalies and hypogonadism. Mutations in SDCCAG8(NPHP10) were described recently in patients with nephronophthisis and retinal degeneration (Senior-Loken syndrome; SLS). Given the phenotypic and genetic overlap between known ciliopathy genes, we hypothesized that mutations in SDCCAG8 might also contribute alleles to more severe, multisystemic ciliopathies. We performed genetic and phenotypic analyses of 2 independent BBS cohorts. Subsequent to mutation screening, we made a detailed phenotypic analysis of 5 families mutated for SDCCAG8 (3 homozygous and 2 compound heterozygous mutations) and conducted statistical analyses across both cohorts to examine possible phenotype-genotype correlations with mutations at this locus. All patients with mutations in SDCCAG8 fulfilled the diagnostic criteria for BBS (retinal degeneration, obesity, cognitive defects, renal failure, hypogonadism). Interestingly, none of the patients with primary SDCCAG8 mutations had polydactyly, a frequent but not obligatory BBS feature. In contrast, the same patients displayed early-onset renal failure, obesity, as well as recurrent pulmonary and ENT infections. Comparison of the phenotypes of these families with our entire BBS cohort indicated that renal impairment and absent polydactyly correlated significantly with causal SDCCAG8 mutations. Thus, SDCCAG8 mutations are sufficient to cause BBS in 1-2% of our combined cohorts, and define this gene as the sixteenth BBS locus (BBS16). The absence of polydactyly and the concomitant, apparently fully penetrant association with early kidney failure represents the first significant genotype-phenotype correlation in BBS that potentially represents an indicator for phenotype-driven priority screening and informs specific patient management.
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Affiliation(s)
- E Schaefer
- Laboratoire de Génétique Médicale EA 3949, Equipe Avenir-Inserm, Faculté de Médecine de Strasbourg, Université de Strasbourg, Strasbourg
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Bennouna-Greene V, Kremer S, Stoetzel C, Christmann D, Schuster C, Durand M, Verloes A, Sigaudy S, Holder-Espinasse M, Godet J, Brandt C, Marion V, Danion A, Dietemann JL, Dollfus H. Hippocampal dysgenesis and variable neuropsychiatric phenotypes in patients with Bardet-Biedl syndrome underline complex CNS impact of primary cilia. Clin Genet 2011; 80:523-31. [PMID: 21517826 DOI: 10.1111/j.1399-0004.2011.01688.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
The Bardet-Biedl syndrome (BBS) is a rare ciliopathy clinically defined by the association of retinitis pigmentosa, polydactyly, obesity, kidney disease and cognitive impairment. The cognitive functioning, behavioral phenotype, prevalence of psychiatric diseases and memory performances of a cohort of 34 patients with BBS were evaluated and a systemic brain magnetic resonance imaging (MRI) was performed. The patients' cognitive functioning was of marked variable efficiency ranging from normal to disabling performances. Neuropsychological disorders such as slow thought process, attention difficulties and obsessive-compulsive traits were observed. Our main finding was hippocampal dysgenesis, diagnosed by MRI, found in 42.31% of the patients in this cohort. Moreover, we show that BBS proteins are expressed in the human hippocampus and in the human brain in the normal subject. Recent literature in the murine model shows that hippocampal neurogenesis, in particular in the adult mouse, requires an intact primary cilia. These results encourage us to further investigate the possible role of BBS proteins in the hippocampus and related central nervous system structures.
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Affiliation(s)
- V Bennouna-Greene
- Laboratoire de Génétique Médicale, Equipe Avenir-INSERM EA3949, Université de Strasbourg, F67085, France.
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Mockel A, Perdomo Y, Stutzmann F, Letsch J, Marion V, Dollfus H. Retinal dystrophy in Bardet-Biedl syndrome and related syndromic ciliopathies. Prog Retin Eye Res 2011; 30:258-74. [PMID: 21477661 DOI: 10.1016/j.preteyeres.2011.03.001] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2010] [Revised: 03/03/2011] [Accepted: 03/04/2011] [Indexed: 01/26/2023]
Abstract
Primary cilia are almost ubiquitously expressed in eukaryotic cells where they function as sensors relaying information either from the extracellular environment or between two compartments of the same cell, such as in the photoreceptor cell. In ciliopathies, a continuously growing class of genetic disorders related to ciliary defects, the modified primary cilium of the photoreceptor, also known as the connecting cilium, is frequently defective. Ciliary dysfunction involves disturbances in the trafficking and docking of specific proteins involved in its biogenesis or maintenance. The main well-conserved ciliary process, intraflagellar transport (IFT), is a complex process carried out by multimeric ciliary particles and molecular motors of major importance in the photoreceptor cell. It is defective in a growing number of ciliopathies leading to retinal degeneration. Retinitis pigmentosa related to ciliary dysfunction can be an isolated feature or a part of a syndrome such as Bardet-Biedl syndrome (BBS). Research on ciliopathies and BBS has led to the discovery of several major cellular processes carried out by the primary cilium structure and has highlighted their genetic heterogeneity.
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Affiliation(s)
- A Mockel
- Laboratoire de physiopathologie des syndromes rares et héréditaires, Strasbourg, France
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Aliferis K, Marsal C, Pelletier V, Doray B, Weiss MM, Tops CMJ, Speeg-Schatz C, Lesnik SAJ, Dollfus H. A novel nonsense B3GALTL mutation confirms Peters plus syndrome in a patient with multiple malformations and Peters anomaly. Ophthalmic Genet 2011; 31:205-8. [PMID: 21067481 DOI: 10.3109/13816810.2010.512355] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Peters plus syndrome is an autosomal recessive rare congenital disorder defined by corneal Peters anomaly with short disproportionate stature, development delay and dysmorphic facial features. In addition, cardiac, genito-urinary and/or central nervous system malformations can be present. Mutations in the beta-1,3-galactosyltransferase-like glycosyltransferase gene (B3GALTL) have been reported in patients with Peters plus syndrome prompting phenotype-genotype studies because of the variable clinical spectrum related to the syndrome. A 20 month old boy presenting with bilateral Peters anomaly in association with multiple developmental anomalies including cerebral malformations was found to carry a novel homozygous B3GALTL nonsense mutation [p.Tyr366X]. This is the first stop mutation described in association with this gene. The present report confirms the wide clinical spectrum of Peters plus syndrome, underlines the major clinical criteria of the syndrome and the major implication of B3GALTL gene in this condition. Ophthalmologic examination in multiple developmental anomalies remains an important clinical issue that may lead to specific gene screening. In Peters plus syndrome B3GALTL molecular test provides diagnosis confirmation and improves dramatically genetic counselling for the families.
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Affiliation(s)
- K Aliferis
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France. k.aliferis@gmailcom
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34
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Germanaud D, Rossi M, Bussy G, Gérard D, Hertz-Pannier L, Blanchet P, Dollfus H, Giuliano F, Bennouna-Greene V, Sarda P, Sigaudy S, Curie A, Vincent MC, Touraine R, des Portes V. The Renpenning syndrome spectrum: new clinical insights supported by 13 new PQBP1-mutated males. Clin Genet 2010; 79:225-35. [PMID: 20950397 DOI: 10.1111/j.1399-0004.2010.01551.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
Since the first reports of polyglutamine-binding protein 1 (PQBP1) mutations in Renpenning syndrome and related disorders, the spectrum of PQBP1-linked clinical manifestations has been outlined from rare published case reports. The phenotypic description is often obtained from medical archives, and therefore, heterogeneous. Moreover, some aspects such as brain imaging or cognitive and behavioral functioning are rarely described. In this study, 13 PQBP1-mutated French patients were subjected to a standardized clinical, cognitive and behavioral assessment. Physical measurements of their relatives were also collected. We report on a recognizable clinical and radiological phenotype. All patients presented with microcephaly, leanness and mild short stature, relative to familial measurements. Three new clinical features are described: upper back progressive muscular atrophy, metacarpophalangeal ankylosis of the thumb and velar dysfunction. The specific facial dysmorphic features included at least four of the following signs: long triangular face, large ridged nose, half-depilated eyebrows, dysplastic or protruding ears and rough slightly sparse hair. An over-aged appearance was noticed in elderly patients. Cortical gyrification was normal based on available magnetic brain imaging of six patients. PQBP1-linked microcephaly (or Renpenning syndrome) is an X-linked mental retardation syndrome, which has clinically recognizable features.
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Affiliation(s)
- D Germanaud
- Centre de Référence Déficiences Intellectuelles de Causes Rares Centre de Référence anomalies du développement embryonnaire, Hôpital Femme Mère Enfant, Hospices Civils de Lyon, 59 Boulevard Pinel, Bron Cedex, France
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Fradin M, Stoetzel C, Muller J, Koob M, Christmann D, Debry C, Kohler M, Isnard M, Astruc D, Desprez P, Zorres C, Flori E, Dollfus H, Doray B. Osteosclerotic bone dysplasia in siblings with a Fam20C mutation. Clin Genet 2010; 80:177-83. [PMID: 20825432 DOI: 10.1111/j.1399-0004.2010.01516.x] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Raine syndrome is an autosomal recessive disorder caused by mutations in the FAM20C gene. FAM20C codes for the human homolog of DMP4, a dentin matrix protein highly expressed in odontoblasts and moderately in bone. DMP4 is probably playing a role in the mineralization process. Since the first case reported in 1989 by Raine et al. 21 cases have been published delineating a phenotype which associates dysmorphic features, cerebral calcifications, choanal atresia or stenosis and thoracic/pulmonary hypoplasia. Kan and Kozlowski suggested the name of Raine syndrome to describe this new lethal osteosclerotic bone dysplasia. All the cases described were lethal during the neonatal period except for the last two reported patients aged 8 and 11 years who presented severe mental retardation. Here we describe two sisters, with an attenuated phenotype of Raine syndrome, who present an unexpectedly normal psychomotor development at ages 4 and 1, respectively. Identification of a homozygous mutation in the FAM20C gene confirmed the Raine syndrome diagnosis, thus contributing to the expansion of the Raine syndrome phenotype. This case report also prompted us to revisit the FAM20 gene classification and allowed us to highlight the ancestral status of Fam20C.
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Affiliation(s)
- Melanie Fradin
- Service de Génétique Médicale, CHU Strasbourg, Hôpital de Hautepierre, Avenue Molière, Strasbourg, France.
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36
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Bonnet C, Andrieux J, Beri-Dexheimer M, Leheup B, Boute O, Manouvrier S, Delobel B, Copin H, Receveur A, Mathieu M, Thiriez G, Le Caignec C, David A, de Blois MC, Malan V, Philippe A, Cormier-Daire V, Colleaux L, Flori E, Dollfus H, Pelletier V, Thauvin-Robinet C, Masurel-Paulet A, Faivre L, Tardieu M, Bahi-Buisson N, Callier P, Mugneret F, Edery P, Jonveaux P, Sanlaville D. Microdeletion at chromosome 4q21 defines a new emerging syndrome with marked growth restriction, mental retardation and absent or severely delayed speech. J Med Genet 2010; 47:377-84. [DOI: 10.1136/jmg.2009.071902] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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37
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Laugel V, Dalloz C, Durand M, Sauvanaud F, Kristensen U, Vincent MC, Pasquier L, Odent S, Cormier-Daire V, Gener B, Tobias ES, Tolmie JL, Martin-Coignard D, Drouin-Garraud V, Heron D, Journel H, Raffo E, Vigneron J, Lyonnet S, Murday V, Gubser-Mercati D, Funalot B, Brueton L, Sanchez Del Pozo J, Muñoz E, Gennery AR, Salih M, Noruzinia M, Prescott K, Ramos L, Stark Z, Fieggen K, Chabrol B, Sarda P, Edery P, Bloch-Zupan A, Fawcett H, Pham D, Egly JM, Lehmann AR, Sarasin A, Dollfus H. Mutation update for the CSB/ERCC6 and CSA/ERCC8 genes involved in Cockayne syndrome. Hum Mutat 2010; 31:113-26. [PMID: 19894250 DOI: 10.1002/humu.21154] [Citation(s) in RCA: 163] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
Cockayne syndrome is an autosomal recessive multisystem disorder characterized principally by neurological and sensory impairment, cachectic dwarfism, and photosensitivity. This rare disease is linked to mutations in the CSB/ERCC6 and CSA/ERCC8 genes encoding proteins involved in the transcription-coupled DNA repair pathway. The clinical spectrum of Cockayne syndrome encompasses a wide range of severity from severe prenatal forms to mild and late-onset presentations. We have reviewed the 45 published mutations in CSA and CSB to date and we report 43 new mutations in these genes together with the corresponding clinical data. Among the 84 reported kindreds, 52 (62%) have mutations in the CSB gene. Many types of mutations are scattered along the whole coding sequence of both genes, but clusters of missense mutations can be recognized and highlight the role of particular motifs in the proteins. Genotype-phenotype correlation hypotheses are considered with regard to these new molecular and clinical data. Additional cases of molecular prenatal diagnosis are reported and the strategy for prenatal testing is discussed. Two web-based locus-specific databases have been created to list all identified variants and to allow the inclusion of future reports (www.umd.be/CSA/ and www.umd.be/CSB/).
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Affiliation(s)
- V Laugel
- Laboratory of Medical Genetics, University of Strasbourg, Strasbourg, France.
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38
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Greene VB, Stoetzel C, Pelletier V, Perdomo-Trujillo Y, Liebermann L, Marion V, De Korvin H, Boileau C, Dufier JL, Dollfus H. Confirmation of ADAMTSL4 mutations for autosomal recessive isolated bilateral ectopia lentis. Ophthalmic Genet 2010; 31:47-51. [PMID: 20141359 DOI: 10.3109/13816810903567604] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Ectopia lentis (EL) is a zonular disease where alteration of the zonular fibers leads progressively to lens dislocation. It is most often associated with systemic diseases such as Marfan syndrome, Weill-Marchesani syndrome or homocystinuria. Isolated non syndromic ectopia lentis (IEL) is reported in families with autosomal inheritance, with dominant forms being more common than recessive. LTBP2 truncating mutations have been described as a cause of autosomal recessive ectopia lentis as a primary or secondary feature in patients showing ocular (eg, glaucoma) or extraocular manifestations (eg, Marfanoid habitus). Recently, ADAMTSL4 has been shown to be responsible for isolated autosomal recessive ectopia lentis in an inbred family. Herein we show a consanguineous family that carries a novel homozygous splice mutation IVS4-1G>A/IVS4-1G>A in ADAMTSL4 responsible for isolated autosomal recessive EL, thus confirming the involvement of this gene in this condition and underlining the major role of ADAMTS proteases in zonular fibers homeostasis.
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Affiliation(s)
- V Bennouna Greene
- Laboratoire de Génétique Médicale, Equipe Avenir-Inserm, Faculté de Médecine de Strasbourg, Université de Strasbourg, Strasbourg, France
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39
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Muller J, Stoetzel C, Vincent MC, Leitch CC, Laurier V, Danse JM, Hellé S, Marion V, Bennouna-Greene V, Vicaire S, Megarbane A, Kaplan J, Drouin-Garraud V, Hamdani M, Sigaudy S, Francannet C, Roume J, Bitoun P, Goldenberg A, Philip N, Odent S, Green J, Cossée M, Davis EE, Katsanis N, Bonneau D, Verloes A, Poch O, Mandel JL, Dollfus H. Identification of 28 novel mutations in the Bardet-Biedl syndrome genes: the burden of private mutations in an extensively heterogeneous disease. Hum Genet 2010; 127:583-93. [PMID: 20177705 DOI: 10.1007/s00439-010-0804-9] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2009] [Accepted: 02/10/2010] [Indexed: 12/01/2022]
Abstract
Bardet-Biedl syndrome (BBS), an emblematic disease in the rapidly evolving field of ciliopathies, is characterized by pleiotropic clinical features and extensive genetic heterogeneity. To date, 14 BBS genes have been identified, 3 of which have been found mutated only in a single BBS family each (BBS11/TRIM32, BBS13/MKS1 and BBS14/MKS4/NPHP6). Previous reports of systematic mutation detection in large cohorts of BBS families (n > 90) have dealt only with a single gene, or at most small subsets of the known BBS genes. Here we report extensive analysis of a cohort of 174 BBS families for 12/14 genes, leading to the identification of 28 novel mutations. Two pathogenic mutations in a single gene have been found in 117 families, and a single heterozygous mutation in 17 families (of which 8 involve the BBS1 recurrent mutation, M390R). We confirm that BBS1 and BBS10 are the most frequently mutated genes, followed by BBS12. No mutations have been found in BBS11/TRIM32, the identification of which as a BBS gene only relies on a single missense mutation in a single consanguineous family. While a third variant allele has been observed in a few families, they are in most cases missenses of uncertain pathogenicity, contrasting with the type of mutations observed as two alleles in a single gene. We discuss the various strategies for diagnostic mutation detection, including homozygosity mapping and targeted arrays for the detection of previously reported mutations.
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Affiliation(s)
- Jean Muller
- Laboratoire de Diagnostic Génétique, CHU Strasbourg Nouvel Hôpital Civil, 1 place de l'Hôpital, 67000 Strasbourg, France.
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40
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Stoetzel C, Riehm S, Bennouna Greene V, Pelletier V, Vigneron J, Leheup B, Marion V, Hellé S, Danse J, Thibault C, Moulinier L, Veillon F, Dollfus H. Confirmation ofTFAP2Agene involvement in branchio-oculo-facial syndrome (BOFS) and report of temporal bone anomalies. Am J Med Genet A 2009; 149A:2141-6. [DOI: 10.1002/ajmg.a.33015] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Leveziel N, Delcourt C, Zerbib J, Dollfus H, Kaplan J, Benlian P, Coscas G, Souied E, Soubrane G. Épidémiologie de la dégénérescence maculaire liée à l’âge. J Fr Ophtalmol 2009; 32:440-51. [DOI: 10.1016/j.jfo.2009.04.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2008] [Accepted: 04/21/2009] [Indexed: 11/29/2022]
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42
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Laugel V, Dalloz C, Tobias ES, Tolmie JL, Martin-Coignard D, Drouin-Garraud V, Valayannopoulos V, Sarasin A, Dollfus H. Cerebro-oculo-facio-skeletal syndrome: three additional cases with CSB mutations, new diagnostic criteria and an approach to investigation. J Med Genet 2008; 45:564-71. [PMID: 18628313 DOI: 10.1136/jmg.2007.057141] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND The cerebro-oculo-facio-skeletal syndrome (COFS syndrome) is an autosomal recessive disorder which was initially described in a specific aboriginal population from Manitoba. In recent years, COFS syndrome has been linked in this original population to a defective DNA repair pathway and to a homozygous mutation in the major gene underlying Cockayne syndrome (CSB). However, most reports of suspected COFS syndrome outside this population have not been confirmed at the molecular level, leading to considerable heterogeneity within the syndrome and confusing overlaps between COFS syndrome and other eye and brain disorders. OBJECTIVE To refine the delineation of the syndrome on genetically proven COFS cases. METHODS We report the exhaustive clinical, cellular and molecular data of three unrelated COFS patients with mutations in the CSB gene. RESULTS All three patients present the cardinal features of COFS syndrome including extreme microcephaly, congenital cataracts, facial dysmorphism and arthrogryposis. They also exhibit a predominantly postnatal growth failure, a severe psychomotor retardation, with axial hypotonia and peripheral hypertonia and neonatal feeding difficulties. Fibroblasts from the patients show the same DNA repair defect which can be complemented by transfection of the CSB wild-type cDNA. Five new mutations in the CSB gene have been identified in these patients. CONCLUSIONS Our data indicate that COFS syndrome represents the most severe end of the Cockayne spectrum. New diagnostic criteria for COFS syndrome are proposed, based on our findings and on the few genetically proven COFS cases from the literature.
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Affiliation(s)
- V Laugel
- Laboratory of Medical Genetics, Faculte de Medecine, 11 rue Humann, F-67000 Strasbourg, France.
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43
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de Pontual L, Pelet A, Clement-Ziza M, Trochet D, Antonarakis SE, Attie-Bitach T, Beales PL, Blouin JL, Dastot-Le Moal F, Dollfus H, Goossens M, Katsanis N, Touraine R, Feingold J, Munnich A, Lyonnet S, Amiel J. Epistatic interactions with a common hypomorphic RET allele in syndromic Hirschsprung disease. Hum Mutat 2007; 28:790-6. [PMID: 17397038 DOI: 10.1002/humu.20517] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Hirschsprung disease (HSCR) stands as a model for genetic dissection of complex diseases. In this model, a major gene, RET, is involved in most if not all cases of isolated (i.e., nonsyndromic) HSCR, in conjunction with other autosomal susceptibility loci under a multiplicative model. HSCR susceptibility alleles can harbor either heterozygous coding sequence mutations or, more frequently, a polymorphism within intron 1, leading to a hypomorphic RET allele. On the other hand, about 30% of HSCR are syndromic. Hitherto, the disease causing gene has been identified for eight Mendelian syndromes with HSCR: congenital central hypoventilation (CCHS), Mowat-Wilson (MWS), Bardet-Biedl (BBS), Shah-Waardenburg (WS4), cartilage-hair-hypoplasia (CHH), Smith-Lemli-Opitz (SLO), Goldberg-Sprintzsen (GSS), and hydrocephalus due to congenital stenosis of the aqueduct of sylvius (HSAS). According to the HSCR syndrome, the penetrance of HSCR trait varies from 5 to 70%. Trisomy 21 (T21) also predisposes to HSCR. We were able to collect a series of 393 patients affected by CCHS (n = 173), WS4 (n = 24), BBS (n = 51), MWS (n = 71), T21 (n = 46), and mental retardation (MR) with HSCR (n = 28). For each syndrome, we studied the RET locus in two subgroups of patients; i.e., with or without HSCR. We genotyped the RET locus in 393 patients among whom 195 had HSCR, and compared the distribution of alleles and genotypes within the two groups for each syndrome. RET acts as a modifier gene for the HSCR phenotype in patients with CCHS, BBS, and Down syndrome, but not in patients with MWS and WS4. The frequent, low penetrant, predisposing allele of the RET gene can be regarded as a risk factor for the HSCR phenotype in CCHS, BBS, and Down syndrome, while its role is not significant in MWS and WS4. These data highlight the pivotal role of the RET gene in both isolated and syndromic HSCR.
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Affiliation(s)
- L de Pontual
- Université Paris-René Descartes, Faculté de Médecine, INSERM U-781, AP-HP, Hôpital Necker-Enfant Malades, Paris, France
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44
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Fleury M, Barbier R, Ziegler F, Mohr M, Caron O, Dollfus H, Tranchant C, Warter JM. Myopathy with tubular aggregates and gyrate atrophy of the choroid and retina due to hyperornithinaemia. J Neurol Neurosurg Psychiatry 2007; 78:656-7. [PMID: 17088329 PMCID: PMC2077941 DOI: 10.1136/jnnp.2006.101386] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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45
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Blanc F, Wolff V, Talmant V, Attali P, Germain P, Flori E, Toutain A, Dollfus H, Tranchant C. Late onset stroke and myocardial infarction in Williams syndrome. Eur J Neurol 2006; 13:e3-4. [PMID: 17116204 DOI: 10.1111/j.1468-1331.2006.01475.x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Michel G, Villega F, Desprez P, Dollfus H, Speeg-Schatz C. [Ondine's Curse and rare oculomotor abnormalities: a case report]. J Fr Ophtalmol 2006; 29:422-5. [PMID: 16885811 DOI: 10.1016/s0181-5512(06)77703-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Ondine's Curse or congenital central hypoventilation syndrome (CCHS) is a neurocristopathy (failure of migration or differentiation of neural crest-derived precursor cells) and is characterized by hypoventilation or apnea, which is most pronounced during sleep, with no other abnormalities of the neuro-respiratory system. Because of respiratory distress soon after birth, patients must be intubated and ventilated for a long time. This disorder may be associated with other symptoms of neurocristopathy (Hirschsprung disease, neuroblastoma, neuroganglioma) and other abnormalities of the autonomic nervous system (vasomotor dysfunctions or ophthalmic abnormalities: abnormal pupils, insufficient convergence, strabismus, or ptosis). We report the original case of a CCHS patient who presented with alternative ptosis of both the right and left eyes and esotropia. The ocular findings should lead to earlier diagnosis and speedier adequate treatment.
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Affiliation(s)
- G Michel
- Clinique Ophtalmologique, Hôpital Civil, Hôpitaux Universitaires de Strasbourg.
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Seifert W, Holder-Espinasse M, Spranger S, Hoeltzenbein M, Rossier E, Dollfus H, Lacombe D, Verloes A, Chrzanowska KH, Maegawa GHB, Chitayat D, Kotzot D, Huhle D, Meinecke P, Albrecht B, Mathijssen I, Leheup B, Raile K, Hennies HC, Horn D. Mutational spectrum of COH1 and clinical heterogeneity in Cohen syndrome. J Med Genet 2006; 43:e22. [PMID: 16648375 PMCID: PMC2564527 DOI: 10.1136/jmg.2005.039867] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cohen syndrome (CS) is an autosomal recessive disorder with variability in the clinical manifestations, characterised by mental retardation, postnatal microcephaly, facial dysmorphism, pigmentary retinopathy, myopia, and intermittent neutropenia. Mutations in the gene COH1 have been found in an ethnically diverse series of patients. Brief clinical descriptions of 24 patients with CS are provided. The patients were from 16 families of different ethnic backgrounds and between 2.5 and 60 years of age at assessment. DNA samples from all patients were analysed for mutations in COH1 by direct sequencing. Splice site mutations were characterised using reverse transcriptase PCR analysis from total RNA samples. In this series, we detected 25 different COH1 mutations; 19 of these were novel, including 9 nonsense mutations, 8 frameshift mutations, 4 verified splice site mutations, 3 larger in frame deletions, and 1 missense mutation. We observed marked variability of developmental and growth parameters. The typical facial gestalt was seen in 23/24 patients. Early onset progressive myopia was present in all the patients older than 5 years. Widespread pigmentary retinopathy was found in 12/14 patients assessed over 5 years of age. We present evidence for extended allelic heterogeneity of CS, with the vast majority of mutations leading to premature termination codons in COH1. Our data confirm the broad clinical spectrum of CS with some patients lacking even the characteristic facial gestalt and pigmentary retinopathy at school age.
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Schluth C, Cossée M, Girard-Lemaire F, Carelle N, Dollfus H, Jeandidier E, Flori E. Phenotype in X chromosome rearrangements: pitfalls of X inactivation study. ACTA ACUST UNITED AC 2006; 55:29-36. [PMID: 16690229 DOI: 10.1016/j.patbio.2006.04.003] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2006] [Accepted: 04/05/2006] [Indexed: 11/21/2022]
Abstract
OBJECTIVE X inactivation pattern in X chromosome rearrangements usually favor the less unbalanced cells. It is correlated to a normal phenotype, small size or infertility. We studied the correlation between phenotype and X inactivation ratio in patients with X structural anomalies. PATIENTS AND METHODS During the 1999-2005 period, 12 X chromosome rearrangements, including three prenatal cases, were diagnosed in the Laboratoire de Cytogénétique of Strasbourg. In seven cases, X inactivation ratio could be assessed by late replication or methylation assay. RESULTS In three of seven cases (del Xp, dup Xp, t(X;A)), X inactivation ratio and phenotype were consistent. The four other cases showed discrepancies between phenotype and X inactivation pattern: mental retardation and dysmorphism in a case of balanced X-autosome translocation, schizophrenia and autism in two cases of XX maleness and MLS syndrome (microphthalmia with linear skin defects) in a case of Xp(21.3-pter) deletion. CONCLUSION Discrepancies between X inactivation ratio and phenotype are not rare and can be due to gene disruption, position effect, complex microrearrangements, variable pattern of X inactivation in different tissues or fortuitous association. In this context, the prognostic value of X inactivation study in prenatal diagnosis will be discussed.
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MESH Headings
- Abnormalities, Multiple/genetics
- Adult
- Autistic Disorder/genetics
- Child, Preschool
- Chromosome Deletion
- Chromosomes, Human, X/genetics
- DNA Methylation
- DNA Replication Timing
- Dwarfism/genetics
- Female
- Fragile X Mental Retardation Protein/genetics
- Genes, X-Linked
- Genetic Diseases, X-Linked/diagnosis
- Genetic Diseases, X-Linked/embryology
- Genetic Diseases, X-Linked/genetics
- Humans
- Infant, Newborn
- Male
- Mental Retardation, X-Linked/genetics
- Phenotype
- Prenatal Diagnosis
- Receptors, Androgen/genetics
- Schizophrenia/genetics
- Translocation, Genetic/genetics
- Turner Syndrome/genetics
- X Chromosome Inactivation
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Affiliation(s)
- C Schluth
- Laboratoire de Cytogénétique, Hôpital de Hautepierre, avenue Molière, 67098 Strasbourg cedex, France
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Pasquier L, Laugel V, Lazaro L, Dollfus H, Journel H, Edery P, Goldenberg A, Martin D, Heron D, Le Merrer M, Rustin P, Odent S, Munnich A, Sarasin A, Cormier-Daire V. Wide clinical variability among 13 new Cockayne syndrome cases confirmed by biochemical assays. Arch Dis Child 2006; 91:178-82. [PMID: 16428367 PMCID: PMC2082700 DOI: 10.1136/adc.2005.080473] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Cockayne syndrome is a multi-systemic, autosomal recessive disease characterised by postnatal growth failure and progressive multi-organ dysfunction. The main clinical features are severe dwarfism (<-2 SD), microcephaly (<-3 SD), psychomotor delay, sensorial loss (cataracts, pigmentary retinopathy, and deafness), and cutaneous photosensitivity. Here, 13 new cases of Cockayne syndrome are reported, which have been clinically diagnosed and confirmed using a biochemical transcription assay. The wide clinical variability, ranging from prenatal features to normal psychomotor development, is emphasised. When cardinal features are lacking, the diagnosis of Cockayne syndrome should be considered when presented with growth retardation, microcephaly, and one of the suggesting features such as enophthalmia, limb ataxia, abnormal auditory evoked responses, or increased ventricular size on cerebral imaging.
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Affiliation(s)
- L Pasquier
- Unité de Génétique Clinique, Hôpital Sud, 35203 Rennes, France.
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Ross AJ, May-Simera H, Eichers ER, Kai M, Hill J, Jagger DJ, Leitch CC, Chapple JP, Munro PM, Fisher S, Tan PL, Phillips HM, Leroux MR, Henderson DJ, Murdoch JN, Copp AJ, Eliot MM, Lupski JR, Kemp DT, Dollfus H, Tada M, Katsanis N, Forge A, Beales PL. Erratum: Corrigendum: Disruption of Bardet-Biedl syndrome ciliary proteins perturbs planar cell polarity in vertebrates. Nat Genet 2005. [DOI: 10.1038/ng1205-1381b] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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