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Jedraszak G, Jobic F, Receveur A, Bilan F, Gilbert-Dussardier B, Tiffany B, Missirian C, Willems M, Odent S, Lucas J, Dubourg C, Schaefer E, Scheidecker S, Lespinasse J, Goldenberg A, Guerrot AM, Joly-Helas G, Chambon P, Le Caignec C, David A, Coutton C, Satre V, Vieville G, Amblard F, Harbuz R, Sanlaville D, Till M, Vincent-Delorme C, Colson C, Andrieux J, Naudion S, Toutain J, Rooryck C, de Fréminville B, Prieur F, Daire VC, Amram D, Kleinfinger P, Schulze MB, Raabe-Meyer G, Courage C, Lemke J, Stefanou EG, Loretta T, Emmanouil M, Tzeli SK, Sodowska H, Anderson J, Nandini A, Copin H, Garçon L, Liehr T, Morin G. Cat eye syndrome: Clinical, cytogenetics and familial findings in a large cohort of 43 patients highlighting the importance of congenital heart disease and inherited cases. Am J Med Genet A 2024; 194:e63476. [PMID: 37974505 DOI: 10.1002/ajmg.a.63476] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [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: 07/22/2023] [Revised: 10/13/2023] [Accepted: 11/05/2023] [Indexed: 11/19/2023]
Abstract
Cat Eye Syndrome (CES) is a rare genetic disease caused by the presence of a small supernumerary marker chromosome derived from chromosome 22, which results in a partial tetrasomy of 22p-22q11.21. CES is classically defined by association of iris coloboma, anal atresia, and preauricular tags or pits, with high clinical and genetic heterogeneity. We conducted an international retrospective study of patients carrying genomic gain in the 22q11.21 chromosomal region upstream from LCR22-A identified using FISH, MLPA, and/or array-CGH. We report a cohort of 43 CES cases. We highlight that the clinical triad represents no more than 50% of cases. However, only 16% of CES patients presented with the three signs of the triad and 9% not present any of these three signs. We also highlight the importance of other impairments: cardiac anomalies are one of the major signs of CES (51% of cases), and high frequency of intellectual disability (47%). Ocular motility defects (45%), abdominal malformations (44%), ophthalmologic malformations (35%), and genitourinary tract defects (32%) are other frequent clinical features. We observed that sSMC is the most frequent chromosomal anomaly (91%) and we highlight the high prevalence of mosaic cases (40%) and the unexpectedly high prevalence of parental transmission of sSMC (23%). Most often, the transmitting parent has mild or absent features and carries the mosaic marker at a very low rate (<10%). These data allow us to better delineate the clinical phenotype associated with CES, which must be taken into account in the cytogenetic testing for this syndrome. These findings draw attention to the need for genetic counseling and the risk of recurrence.
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Affiliation(s)
- Guillaume Jedraszak
- Constitutional Genetics Laboratory, University Hospital of Amiens, Amiens, France
- UR4666, University of Picardy Jules Verne, Amiens, France
| | - Florence Jobic
- Clinical Genetics Unit, University Hospital of Amiens, Amiens, France
| | - Aline Receveur
- Constitutional Genetics Laboratory, University Hospital of Amiens, Amiens, France
| | - Frédéric Bilan
- Genetics Laboratory, University Hospital of Poitiers, Poitiers, France
| | | | - Busa Tiffany
- Medical Genetics Unit, University Hospital of Marseille, Marseille, France
| | - Chantal Missirian
- Cytogenetics Laboratory, University Hospital of Marseille, Marseille, France
| | - Marjolaine Willems
- Medical Genetics Laboratory, University Hospital of Montpellier, Montpellier, France
| | - Sylvie Odent
- Medical Genetics Unit, University Hospital of Rennes, Rennes, France
| | - Josette Lucas
- Genetics Laboratory, University Hospital of Rennes, Rennes, France
| | | | - Elise Schaefer
- Clinical Genetics Unit, University Hospital of Strasbourg, Strasbourg, France
| | | | | | - Alice Goldenberg
- Clinical Genetics Unit, University Hospital of Rouen, Rouen, France
| | | | | | - Pascal Chambon
- Cytogenetics Laboratory, University Hospital of Rouen, Rouen, France
| | - Cédric Le Caignec
- Medical Gentics Unit, University Hospital of Toulouse, Toulouse, France
| | - Albert David
- Clinical Genetics Unit, University Hospital of Nantes, Nantes, France
| | - Charles Coutton
- Cytogenetics Laboratory, University Hospital of Grenoble & INSERM U1209 Institute for Advanced Biosciences, University of Grenoble Alpes, Grenoble, France
| | - Véronique Satre
- Cytogenetics Laboratory, University Hospital of Grenoble & INSERM U1209 Institute for Advanced Biosciences, University of Grenoble Alpes, Grenoble, France
| | - Gaëlle Vieville
- Cytogenetics Laboratory, University Hospital of Grenoble, Grenoble, France
| | - Florence Amblard
- Cytogenetics Laboratory, University Hospital of Grenoble, Grenoble, France
| | - Radu Harbuz
- Cytogenetics Laboratory, University Hospital of Grenoble, Grenoble, France
| | | | - Marianne Till
- Cytogenetics Laboratory, University Hospital of Lyon, Bron, France
| | - Catherine Vincent-Delorme
- Catherine Vincent Delorme, Clinical Genetics Unit Guy Fontaine, University Hospital of Lille, Lille, France
| | - Cindy Colson
- Catherine Vincent Delorme, Clinical Genetics Unit Guy Fontaine, University Hospital of Lille, Lille, France
| | - Joris Andrieux
- Molecular Genetics Institute, University hospital of Lille, Lille, France
| | - Sophie Naudion
- Clinical Genetics Unit, University Hospital of Bordeaux, Bordeaux, France
| | - Jérome Toutain
- Clinical Genetics Unit, University Hospital of Bordeaux, Bordeaux, France
| | - Caroline Rooryck
- Medical Genetics Laboratory, University Hospital of Bordeaux, Bordeaux, France
| | | | - Fabienne Prieur
- Medical Genetics Unit, University Hospital of Saint-Etienne, Saint Etienne, France
| | | | - Daniel Amram
- Clinicial Genetics Unit, University Hospital of Creteil, Creteil, France
| | | | - Matthias B Schulze
- Department of Molecular Epidemiology, German Institute of Human Nutrition Potsdam-Rehbruecke, Nuthetal, Germany
| | | | | | - Johannes Lemke
- Institute of Human Genetics, University of Leipzig Medical Center, Leipzig, Germany
| | - Eunice G Stefanou
- Cytogenetics Unit, Laboratory of Medical Genetics, University General Hospital of Patras, Patras, Greece
| | - Thomaidis Loretta
- Developmental Assessment Unit, National and Kapodistrian University of Athens, Athens, Greece
| | | | - Sophia Kitsiou Tzeli
- Department of Medical Genetics, National and Kapodistrian University of Athens, Athens, Greece
| | - Henryka Sodowska
- Niepubliczny Zakład Opieki Zdrowotne "Genom", Ruda Slaska, Poland
| | - Jasen Anderson
- Cytogenetics Department, Sullivan and Nicolaides Pathology, Taringa, Queensland, Australia
| | - Adayapalam Nandini
- Department of Cytogenetics, Royal Brisbane and Women's Hospital, Brisbane, Australia
| | - Henri Copin
- Constitutional Genetics Laboratory, University Hospital of Amiens, Amiens, France
| | - Loïc Garçon
- Constitutional Genetics Laboratory, University Hospital of Amiens, Amiens, France
- UR4666, University of Picardy Jules Verne, Amiens, France
| | - Thomas Liehr
- Jena University Hospital, Friedrich Schiller University, Institute of Human Genetics, Jena, Germany
| | - Gilles Morin
- Clinical Genetics Unit, University Hospital of Amiens, Amiens, France
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2
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Geoffroy V, Lamouche JB, Guignard T, Nicaise S, Kress A, Scheidecker S, Le Béchec A, Muller J. The AnnotSV webserver in 2023: updated visualization and ranking. Nucleic Acids Res 2023:7175348. [PMID: 37216590 DOI: 10.1093/nar/gkad426] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/20/2023] [Accepted: 05/09/2023] [Indexed: 05/24/2023] Open
Abstract
Much of the human genetics variant repertoire is composed of single nucleotide variants (SNV) and small insertion/deletions (indel) but structural variants (SV) remain a major part of our modified DNA. SV detection has often been a complex question to answer either because of the necessity to use different technologies (array CGH, SNP array, Karyotype, Optical Genome Mapping…) to detect each category of SV or to get an appropriate resolution (Whole Genome Sequencing). Thanks to the deluge of pangenomic analysis, Human geneticists are accumulating SV and their interpretation remains time consuming and challenging. The AnnotSV webserver (https://www.lbgi.fr/AnnotSV/) aims at being an efficient tool to (i) annotate and interpret SV potential pathogenicity in the context of human diseases, (ii) recognize potential false positive variants from all the SV identified and (iii) visualize the patient variants repertoire. The most recent developments in the AnnotSV webserver are: (i) updated annotations sources and ranking, (ii) three novel output formats to allow diverse utilization (analysis, pipelines), as well as (iii) two novel user interfaces including an interactive circos view.
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Affiliation(s)
- Véronique Geoffroy
- Université de Brest, Inserm, EFS, UMR 1078, GGB, F-29200 Brest, France
- Laboratoire de Génétique Médicale, UMR 1112, INSERM, IGMA, Université de Strasbourg, Strasbourg, France
| | - Jean-Baptiste Lamouche
- Laboratoire de Génétique Médicale, UMR 1112, INSERM, IGMA, Université de Strasbourg, Strasbourg, France
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Samuel Nicaise
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Arnaud Kress
- Complex Systems and Translational Bioinformatics, ICube, UMR 7357, University of Strasbourg, CNRS, FMTS, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale, UMR 1112, INSERM, IGMA, Université de Strasbourg, Strasbourg, France
- Laboratoires de Diagnostic Génétique, IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Antony Le Béchec
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jean Muller
- Laboratoire de Génétique Médicale, UMR 1112, INSERM, IGMA, Université de Strasbourg, Strasbourg, France
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Laboratoires de Diagnostic Génétique, IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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3
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Karam A, Delvallée C, Estrada-Cuzcano A, Geoffroy V, Lamouche JB, Leuvrey AS, Nourisson E, Tarabeux J, Stoetzel C, Scheidecker S, Porter LF, Génin E, Redon R, Sandron F, Boland A, Deleuze JF, Le May N, Dollfus H, Muller J. WGS Revealed Novel BBS5 Pathogenic Variants, Missed by WES, Causing Ciliary Structure and Function Defects. Int J Mol Sci 2023; 24:8729. [PMID: 37240074 PMCID: PMC10218572 DOI: 10.3390/ijms24108729] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2023] [Revised: 04/18/2023] [Accepted: 04/24/2023] [Indexed: 05/28/2023] Open
Abstract
Bardet-Biedl syndrome (BBS) is an autosomal recessive ciliopathy that affects multiple organs, leading to retinitis pigmentosa, polydactyly, obesity, renal anomalies, cognitive impairment, and hypogonadism. Until now, biallelic pathogenic variants have been identified in at least 24 genes delineating the genetic heterogeneity of BBS. Among those, BBS5 is a minor contributor to the mutation load and is one of the eight subunits forming the BBSome, a protein complex implied in protein trafficking within the cilia. This study reports on a European BBS5 patient with a severe BBS phenotype. Genetic analysis was performed using multiple next-generation sequencing (NGS) tests (targeted exome, TES and whole exome, WES), and biallelic pathogenic variants could only be identified using whole-genome sequencing (WGS), including a previously missed large deletion of the first exons. Despite the absence of family samples, the biallelic status of the variants was confirmed. The BBS5 protein's impact was confirmed on the patient's cells (presence/absence and size of the cilium) and ciliary function (Sonic Hedgehog pathway). This study highlights the importance of WGS and the challenge of reliable structural variant detection in patients' genetic explorations as well as functional tests to assess a variant's pathogenicity.
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Affiliation(s)
- Adella Karam
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Clarisse Delvallée
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Alejandro Estrada-Cuzcano
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Jean-Baptiste Lamouche
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Anne-Sophie Leuvrey
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France (E.N.)
| | - Elsa Nourisson
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France (E.N.)
| | - Julien Tarabeux
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France (E.N.)
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France (E.N.)
| | - Louise Frances Porter
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
- Centre de Référence Pour les Affections Rares en Génétique Ophtalmologique (CARGO), Institut de Génétique Médicale d’Alsace (IGMA), Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France
| | - Emmanuelle Génin
- Inserm, Université de Brest, EFS, UMR 1078, GGB, F-29200 Brest, France
| | - Richard Redon
- CHU Nantes, CNRS, INSERM, L’institut du Thorax, Nantes Université, 44000 Nantes, France
| | - Florian Sandron
- CEA, Centre National de Recherche en Génomique Humaine, Université Paris-Saclay, 91057 Evry, France
| | - Anne Boland
- CEA, Centre National de Recherche en Génomique Humaine, Université Paris-Saclay, 91057 Evry, France
| | - Jean-François Deleuze
- CEA, Centre National de Recherche en Génomique Humaine, Université Paris-Saclay, 91057 Evry, France
| | - Nicolas Le May
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
| | - Hélène Dollfus
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
- Centre de Référence Pour les Affections Rares en Génétique Ophtalmologique (CARGO), Institut de Génétique Médicale d’Alsace (IGMA), Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France
- Service de Génétique Médicale, Institut de Génétique Médicale d’Alsace (IGMA), Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
| | - Jean Muller
- Laboratoire de Génétique Médicale, UMR_S INSERM U1112, Institut de Génétique Médicale d’Alsace (IGMA), Faculté de Médecine FMTS, Université de Strasbourg, 67000 Strasbourg, France
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France (E.N.)
- Unité Fonctionnelle de Bioinformatique Médicale Appliquée au Diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, 67000 Strasbourg, France
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4
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Jouret G, Egloff M, Landais E, Tassy O, Giuliano F, Karmous-Benailly H, Coutton C, Satre V, Devillard F, Dieterich K, Vieville G, Kuentz P, le Caignec C, Beneteau C, Isidor B, Nizon M, Callier P, Marquet V, Bieth E, Lévy J, Tabet AC, Lyonnet S, Baujat G, Rio M, Cartault F, Scheidecker S, Gouronc A, Schalk A, Jacquin C, Spodenkiewicz M, Angélini C, Pennamen P, Rooryck C, Doco-Fenzy M, Poirsier C. Clinical and genomic delineation of the new proximal 19p13.3 microduplication syndrome. Am J Med Genet A 2023; 191:52-63. [PMID: 36196855 DOI: 10.1002/ajmg.a.62983] [Citation(s) in RCA: 0] [Impact Index Per Article: 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: 05/16/2022] [Revised: 08/16/2022] [Accepted: 09/20/2022] [Indexed: 12/14/2022]
Abstract
A small but growing body of scientific literature is emerging about clinical findings in patients with 19p13.3 microdeletion or duplication. Recently, a proximal 19p13.3 microduplication syndrome was described, associated with growth delay, microcephaly, psychomotor delay and dysmorphic features. The aim of our study was to better characterize the syndrome associated with duplications in the proximal 19p13.3 region (prox 19p13.3 dup), and to propose a comprehensive analysis of the underlying genomic mechanism. We report the largest cohort of patients with prox 19p13.3 dup through a collaborative study. We collected 24 new patients with terminal or interstitial 19p13.3 duplication characterized by array-based Comparative Genomic Hybridization (aCGH). We performed mapping, phenotype-genotype correlations analysis, critical region delineation and explored three-dimensional chromatin interactions by analyzing Topologically Associating Domains (TADs). We define a new 377 kb critical region (CR 1) in chr19: 3,116,922-3,494,377, GRCh37, different from the previously described critical region (CR 2). The new 377 kb CR 1 includes a TAD boundary and two enhancers whose common target is PIAS4. We hypothesize that duplications of CR 1 are responsible for tridimensional structural abnormalities by TAD disruption and misregulation of genes essentials for the control of head circumference during development, by breaking down the interactions between enhancers and the corresponding targeted gene.
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Affiliation(s)
- Guillaume Jouret
- Department of Genetics, Reims University Hospital, Reims, France.,National Center of Genetics (NCG), Laboratoire national de santé (LNS), Dudelange, Luxembourg
| | - Matthieu Egloff
- Department of Genetics, Necker-Enfants malades, AP-HP, Institut Imagine, Paris, France
| | - Emilie Landais
- Department of Genetics, Reims University Hospital, Reims, France
| | | | | | | | - Charles Coutton
- Service de Génétique et Procréation, Hôpital Couple-Enfant, CHU Grenoble Alpes, Université Grenoble-Alpes, La Tronche, France.,ACLF (Association des Cytogénéticiens de Langue Française, French Society of Cytogenetics) Member, Grenoble cedex, France
| | - Véronique Satre
- Service de Génétique et Procréation, Hôpital Couple-Enfant, CHU Grenoble Alpes, Université Grenoble-Alpes, La Tronche, France
| | - Françoise Devillard
- Service de Génétique et Procréation, Hôpital Couple-Enfant, CHU Grenoble Alpes, Université Grenoble-Alpes, La Tronche, France
| | - Klaus Dieterich
- Service de Génétique et Procréation, Hôpital Couple-Enfant, CHU Grenoble Alpes, Université Grenoble-Alpes, La Tronche, France
| | - Gaëlle Vieville
- Service de Génétique et Procréation, Hôpital Couple-Enfant, CHU Grenoble Alpes, Université Grenoble-Alpes, La Tronche, France
| | - Paul Kuentz
- Génétique Biologique, PCBio, Besançon University Hospital, Besançon, France
| | - Cédric le Caignec
- ACLF (Association des Cytogénéticiens de Langue Française, French Society of Cytogenetics) Member, Grenoble cedex, France.,Department of Genetics, Nantes University Hospital, Nantes, France
| | - Claire Beneteau
- Department of Genetics, Nantes University Hospital, Nantes, France
| | - Bertrand Isidor
- Department of Genetics, Nantes University Hospital, Nantes, France
| | - Mathilde Nizon
- Department of Genetics, Nantes University Hospital, Nantes, France
| | - Patrick Callier
- ACLF (Association des Cytogénéticiens de Langue Française, French Society of Cytogenetics) Member, Grenoble cedex, France.,Department of Genetics, Dijon University Hospital, Dijon, France
| | - Valentine Marquet
- ACLF (Association des Cytogénéticiens de Langue Française, French Society of Cytogenetics) Member, Grenoble cedex, France.,Department of Genetics, Limoges University Hospital, Limoges, France
| | - Eric Bieth
- Department of Genetics, Toulouse University Hospital, Toulouse, France
| | - Jonathan Lévy
- Department of Genetics, Robert-Debré University Hospital, Paris, France
| | - Anne-Claude Tabet
- Department of Genetics, Robert-Debré University Hospital, Paris, France
| | - Stanislas Lyonnet
- Department of Genetics, Necker-Enfants malades, AP-HP, Institut Imagine, Paris, France.,INSERM U-1163, Université de Paris, Paris, France
| | - Geneviève Baujat
- Department of Genetics, Necker-Enfants malades, AP-HP, Institut Imagine, Paris, France
| | - Marlène Rio
- Department of Genetics, Necker-Enfants malades, AP-HP, Institut Imagine, Paris, France
| | - François Cartault
- Department of Genetics, La Réunion University Hospital, Saint Denis, France
| | | | | | | | - Clémence Jacquin
- Department of Genetics, Reims University Hospital, Reims, France
| | | | - Chloé Angélini
- CHU Bordeaux, Service de Génétique Médicale, Bordeaux, France
| | | | | | - Martine Doco-Fenzy
- Department of Genetics, Reims University Hospital, Reims, France.,ACLF (Association des Cytogénéticiens de Langue Française, French Society of Cytogenetics) Member, Grenoble cedex, France.,EA3801, SFR CAPSANTE, Reims, France
| | - Céline Poirsier
- Department of Genetics, Reims University Hospital, Reims, France
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5
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M’Kacher R, Miguet M, Maillard PY, Colicchio B, Scheidecker S, Najar W, Arnoux M, Oudrhiri N, Borie C, Biehler M, Plesch A, Heidingsfelder L, Bennaceur-Griscelli A, Dieterlen A, Voisin P, Junker S, Carde P, Jeandidier E. A Central Role of Telomere Dysfunction in the Formation of a Unique Translocation within the Sub-Telomere Region Resulting in Duplication and Partial Trisomy. Genes (Basel) 2022; 13:genes13101762. [PMID: 36292646 PMCID: PMC9601474 DOI: 10.3390/genes13101762] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 09/22/2022] [Accepted: 09/23/2022] [Indexed: 12/02/2022] Open
Abstract
Telomeres play a major role in maintaining genome stability and integrity. Putative involvement of telomere dysfunction in the formation of various types of chromosomal aberrations is an area of active research. Here, we report a case of a six-month-old boy with a chromosomal gain encompassing the 11q22.3q25 region identified by SNP array analysis. The size of the duplication is 26.7 Mb and contains 170 genes (OMIM). The duplication results in partial trisomy of the region in question with clinical consequences, including bilateral renal dysplasia, delayed development, and a heart defect. Moreover, the karyotype determined by R-banding and chromosome painting as well as by hybridization with specific sub-telomere probes revealed the presence of an unbalanced t(9;11)(p24;q22.3) translocation with a unique breakpoint involving the sub-telomere region of the short arm of chromosome 9. The karyotypes of the parents were normal. Telomere integrity in circulating lymphocytes from the child and from his parents was assessed using an automated high-throughput method based on fluorescence in situ hybridization (FISH) with telomere- and centromere-specific PNA probes followed by M-FISH multicolor karyotyping. Very short telomeres, as well as an increased frequency of telomere loss and formation of telomere doublets, were detected in the child’s cells. Interestingly, similar telomere profiles were found in the circulating lymphocytes of the father. Moreover, an assessment of clonal telomere aberrations identified chromosomes 9 and 11 with particularly high frequencies of such aberrations. These findings strongly suggest that telomere dysfunction plays a central role in the formation of this specific unbalanced chromosome rearrangement via chromosome end-to-end fusion and breakage–fusion–bridge cycles.
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Affiliation(s)
- Radhia M’Kacher
- Cell Environment DNA Damage R&D, Genopole, 91058 Evry, France
- Correspondence: (R.M.); (E.J.); Tel.: +33-1-60878918 (R.M.); +33-3-89648703 (E.J.)
| | - Marguerite Miguet
- Laboratoire de Génétique, Groupe Hospitalier de la Région de Mulhouse Sud-Alsace, 68070 Mulhouse, France
| | - Pierre-Yves Maillard
- Service de Génétique Hôpitaux Universitaires de Strasbourg, Hôpital de Haute Pierre, 1, Rue Molière, 67000 Strasbourg, France
| | - Bruno Colicchio
- IRIMAS, Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, 68070 Mulhouse, France
| | - Sophie Scheidecker
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 1, Place de l’Hôpital, 67000 Strasbourg, France
| | - Wala Najar
- Cell Environment DNA Damage R&D, Genopole, 91058 Evry, France
| | - Micheline Arnoux
- APHP-Service d’Hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay, 94801 Villejuif, France
| | - Noufissa Oudrhiri
- APHP-Service d’Hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay, 94801 Villejuif, France
| | - Claire Borie
- APHP-Service d’Hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay, 94801 Villejuif, France
| | - Margaux Biehler
- Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Nouvel Hôpital Civil, 1, Place de l’Hôpital, 67000 Strasbourg, France
| | - Andreas Plesch
- MetaSystems GmbH, Robert-Bosch-Str. 6, 68804 Altlussheim, Germany
| | | | - Annelise Bennaceur-Griscelli
- APHP-Service d’Hématologie-Oncohématologie Moléculaire et Cytogénétique Hôpital Paul Brousse Université Paris Saclay, 94801 Villejuif, France
| | - Alain Dieterlen
- IRIMAS, Institut de Recherche en Informatique, Mathématiques, Automatique et Signal, Université de Haute-Alsace, 68070 Mulhouse, France
| | - Philippe Voisin
- Cell Environment DNA Damage R&D, Genopole, 91058 Evry, France
| | - Steffen Junker
- Institute of Biomedicine, University of Aarhus, 8000 Aarhus, Denmark
| | - Patrice Carde
- Department of Hematology Gustave Roussy Cancer Campus, Paris Saclay, 94805 Villejuif, France
| | - Eric Jeandidier
- Laboratoire de Génétique, Groupe Hospitalier de la Région de Mulhouse Sud-Alsace, 68070 Mulhouse, France
- Correspondence: (R.M.); (E.J.); Tel.: +33-1-60878918 (R.M.); +33-3-89648703 (E.J.)
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6
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Jordan P, Dorval G, Arrondel C, Morinière V, Tournant C, Audrezet MP, Michel-Calemard L, Putoux A, Lesca G, Labalme A, Whalen S, Loeuillet L, Martinovic J, Attie-Bitach T, Bessières B, Schaefer E, Scheidecker S, Lambert L, Beneteau C, Patat O, Boute-Benejean O, Molin A, Guimiot F, Fontanarosa N, Nizon M, Lefebvre M, Jeanpierre C, Saunier S, Heidet L. Targeted next-generation sequencing in a large series of fetuses with severe renal diseases. Hum Mutat 2022; 43:347-361. [PMID: 35005812 DOI: 10.1002/humu.24324] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [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: 10/18/2021] [Revised: 11/23/2021] [Accepted: 12/14/2021] [Indexed: 11/07/2022]
Abstract
We report the screening of a large panel of genes in a series of 100 fetuses (98 families) affected with severe renal defects. Causative variants were identified in 22% of cases, greatly improving genetic counseling. The percentage of variants explaining the phenotype was different according to the type of phenotype. The highest diagnostic yield was found in cases affected with the ciliopathy-like phenotype (11/15 families and, in addition, a single heterozygous or a homozygous Class 3 variant in PKHD1 in three unrelated cases with autosomal recessive polycystic kidney disease). The lowest diagnostic yield was observed in cases with congenital anomalies of the kidney and urinary tract (9/78 families and, in addition, Class 3 variants in GREB1L in three unrelated cases with bilateral renal agenesis). Inheritance was autosomal recessive in nine genes (PKHD1, NPHP3, CEP290, TMEM67, DNAJB11, FRAS1, ACE, AGT, and AGTR1), and autosomal dominant in six genes (PKD1, PKD2, PAX2, EYA1, BICC1, and MYOCD). Finally, we developed an original approach of next-generation sequencing targeted RNA sequencing using the custom capture panel used for the sequencing of DNA, to validate one MYOCD heterozygous splicing variant identified in two male siblings with megabladder and inherited from their healthy mother.
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Affiliation(s)
- Penelope Jordan
- APHP Service de Génétique, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Guillaume Dorval
- APHP Service de Génétique, Hôpital Universitaire Necker-Enfants Malades, Paris, France.,Inserm U1163, Laboratoire des Maladies Rénales Héréditaires Institut Imagine, Université de Paris, Paris, France.,APHP Service de Néphrologie Pédiatrique, Centre de Référence des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte (MARHEA), Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Christelle Arrondel
- Inserm U1163, Laboratoire des Maladies Rénales Héréditaires Institut Imagine, Université de Paris, Paris, France
| | - Vincent Morinière
- APHP Service de Génétique, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Carole Tournant
- APHP Service de Génétique, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Marie-Pierre Audrezet
- Service de Génétique moléculaire, Génétique, Génomique et Biotechnologies, UMR 1078, Hôpital Universitaire de Brest, Brest, France
| | - Laurence Michel-Calemard
- Service Biochimie Biologie Moléculaire Grand Est, Hospices Civils de Lyon, Groupement Hospitalier Est, CBPE, Bron, France
| | - Audrey Putoux
- Service de Génétique, Hospices Civils de Lyon, Groupement Hospitalier Est, Bron, France
| | - Gaethan Lesca
- Service de Génétique, Hospices Civils de Lyon, Groupement Hospitalier Est, Bron, France
| | - Audrey Labalme
- Service de Génétique, Hospices Civils de Lyon, Groupement Hospitalier Est, Bron, France
| | - Sandra Whalen
- APHP UF de Génétique Clinique, Centre de Référence des Anomalies du Développement et Syndromes Malformatifs, APHP, Hôpital Armand Trousseau, ERN ITHACA, Sorbonne Université, Paris, France
| | - Laurence Loeuillet
- APHP Service d'Embryofœtopathologie, Hôpital Universitaire Necker-Enfants Malades, Paris, France
| | - Jelena Martinovic
- APHP Service de Fœtopathologie, Hôpital Universitaire Antoine Béclère, Clamart, France
| | - Tania Attie-Bitach
- APHP Service d'Embryofœtopathologie, Hôpital Universitaire Necker-Enfants Malades, Paris, France.,Inserm U 1163, Institut Imagine, Université de Paris, Paris, France
| | - Bettina Bessières
- APHP Service d'Embryofœtopathologie, Hôpital Universitaire Necker-Enfants Malades, Paris, France.,Inserm U 1163, Institut Imagine, Université de Paris, Paris, France
| | - Elise Schaefer
- Service de Génétique Médicale, Institut de Génétique médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Service de Génétique Médicale, Institut de Génétique médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Laetitia Lambert
- Service de Génétique Médicale, Centre Hospitalier Régional Universitaire de Nancy, Nancy, France
| | - Claire Beneteau
- Service de Génétique Médicale, Centre Hospitalier Universitaire de Nantes, Nantes, France
| | - Olivier Patat
- Service de Génétique Médicale, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Odile Boute-Benejean
- Service de Génétique Médicale, Hôpital Jeanne de Flandre, Centre Hospitalier Universitaire de Lille, Lille, France
| | - Arnaud Molin
- Service de Génétique Médicale, Centre Hospitalier Universitaire de Caen, Caen, France
| | - Fabien Guimiot
- APHP Service d'Embryo-Fœtopathologie, Hôpital Universitaire Robert Debré, Paris, France
| | | | - Mathilde Nizon
- Service de Génétique Médicale, CHU Nantes, L'institut Du Thorax, INSERM, CNRS, UNIV Nantes, Nantes, France
| | - Mathilde Lefebvre
- APHP Service de Pathologie fœtale, Hôpital Universitaire Armand Trousseau, Paris, France
| | - Cécile Jeanpierre
- Inserm U1163, Laboratoire des Maladies Rénales Héréditaires Institut Imagine, Université de Paris, Paris, France
| | - Sophie Saunier
- Inserm U1163, Laboratoire des Maladies Rénales Héréditaires Institut Imagine, Université de Paris, Paris, France
| | - Laurence Heidet
- Inserm U1163, Laboratoire des Maladies Rénales Héréditaires Institut Imagine, Université de Paris, Paris, France.,APHP Service de Néphrologie Pédiatrique, Centre de Référence des Maladies Rénales Héréditaires de l'Enfant et de l'Adulte (MARHEA), Hôpital Universitaire Necker-Enfants Malades, Paris, France
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7
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Geoffroy V, Guignard T, Kress A, Gaillard JB, Solli-Nowlan T, Schalk A, Gatinois V, Dollfus H, Scheidecker S, Muller J. AnnotSV and knotAnnotSV: a web server for human structural variations annotations, ranking and analysis. Nucleic Acids Res 2021; 49:W21-W28. [PMID: 34023905 PMCID: PMC8262758 DOI: 10.1093/nar/gkab402] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 04/16/2021] [Accepted: 04/29/2021] [Indexed: 11/13/2022] Open
Abstract
With the dramatic increase of pangenomic analysis, Human geneticists have generated large amount of genomic data including millions of small variants (SNV/indel) but also thousands of structural variations (SV) mainly from next-generation sequencing and array-based techniques. While the identification of the complete SV repertoire of a patient is getting possible, the interpretation of each SV remains challenging. To help identifying human pathogenic SV, we have developed a web server dedicated to their annotation and ranking (AnnotSV) as well as their visualization and interpretation (knotAnnotSV) freely available at the following address: https://www.lbgi.fr/AnnotSV/. A large amount of annotations from >20 sources is integrated in our web server including among others genes, haploinsufficiency, triplosensitivity, regulatory elements, known pathogenic or benign genomic regions, phenotypic data. An ACMG/ClinGen compliant prioritization module allows the scoring and the ranking of SV into 5 SV classes from pathogenic to benign. Finally, the visualization interface displays the annotated SV in an interactive way including popups, search fields, filtering options, advanced colouring to highlight pathogenic SV and hyperlinks to the UCSC genome browser or other public databases. This web server is designed for diagnostic and research analysis by providing important resources to the user.
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Affiliation(s)
- Véronique Geoffroy
- Laboratoire de Génétique Médicale, U1112, INSERM, IGMA, FMTS, Université de Strasbourg, Strasbourg, France
| | | | - Arnaud Kress
- Complex Systems and Translational Bioinformatics, ICube, UMR 7357, University of Strasbourg, CNRS, FMTS, Strasbourg, France
| | | | - Tor Solli-Nowlan
- Department of Medical Genetics, Oslo University Hospital, Oslo, Norway
| | - Audrey Schalk
- Laboratoires de Diagnostic Génétique, IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Hélène Dollfus
- Laboratoire de Génétique Médicale, U1112, INSERM, IGMA, FMTS, Université de Strasbourg, Strasbourg, France
- Centre de référence pour les Affections Rares en Génétique Ophtalmologique, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale, U1112, INSERM, IGMA, FMTS, Université de Strasbourg, Strasbourg, France
- Laboratoires de Diagnostic Génétique, IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jean Muller
- Laboratoire de Génétique Médicale, U1112, INSERM, IGMA, FMTS, Université de Strasbourg, Strasbourg, France
- Laboratoires de Diagnostic Génétique, IGMA, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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8
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Delvallée C, Nicaise S, Antin M, Leuvrey AS, Nourisson E, Leitch CC, Kellaris G, Stoetzel C, Geoffroy V, Scheidecker S, Keren B, Depienne C, Klar J, Dahl N, Deleuze JF, Génin E, Redon R, Demurger F, Devriendt K, Mathieu-Dramard M, Poitou-Bernert C, Odent S, Katsanis N, Mandel JL, Davis EE, Dollfus H, Muller J. A BBS1 SVA F retrotransposon insertion is a frequent cause of Bardet-Biedl syndrome. Clin Genet 2020; 99:318-324. [PMID: 33169370 DOI: 10.1111/cge.13878] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [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: 09/29/2020] [Revised: 11/04/2020] [Accepted: 11/06/2020] [Indexed: 12/11/2022]
Abstract
Bardet-Biedl syndrome (BBS) is a ciliopathy characterized by retinitis pigmentosa, obesity, polydactyly, cognitive impairment and renal failure. Pathogenic variants in 24 genes account for the molecular basis of >80% of cases. Toward saturated discovery of the mutational basis of the disorder, we carefully explored our cohorts and identified a hominid-specific SINE-R/VNTR/Alu type F (SVA-F) insertion in exon 13 of BBS1 in eight families. In six families, the repeat insertion was found in trans with c.1169 T > G, p.Met390Arg and in two families the insertion was found in addition to other recessive BBS loci. Whole genome sequencing, de novo assembly and SNP array analysis were performed to characterize the genomic event. This insertion is extremely rare in the general population (found in 8 alleles of 8 BBS cases but not in >10 800 control individuals from gnomAD-SV) and due to a founder effect. Its 2435 bp sequence contains hallmarks of LINE1 mediated retrotransposition. Functional studies with patient-derived cell lines confirmed that the BBS1 SVA-F is deleterious as evidenced by a significant depletion of both mRNA and protein levels. Such findings highlight the importance of dedicated bioinformatics pipelines to identify all types of variation.
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Affiliation(s)
- Clarisse Delvallée
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France
| | - Samuel Nicaise
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France
| | - Manuela Antin
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Anne-Sophie Leuvrey
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Elsa Nourisson
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Carmen C Leitch
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Georgios Kellaris
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Boris Keren
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, Paris, France.,AP-HP, Hôpital de la Pitié-Salpêtrière, Département de Génétique, Paris, France
| | - Christel Depienne
- Institut du Cerveau et de la Moelle épinière (ICM), Sorbonne Université, Paris, France.,Institute of Human Genetics, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Joakim Klar
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Niklas Dahl
- Department of Immunology, Genetics and Pathology, Science for Life Laboratory, Uppsala University, Uppsala, Sweden
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de biologie François Jacob, Evry, France
| | | | - Richard Redon
- Université de Nantes, CNRS, INSERM, l'institut du thorax, Nantes, France
| | - Florence Demurger
- Service de Génétique Médicale, Centre Hospitalier Bretagne Atlantique, Vannes, France
| | - Koenraad Devriendt
- Center for Human Genetics, University Hospital Leuven and KU Leuven, Leuven, Belgium
| | | | - Christine Poitou-Bernert
- Assistance Publique Hôpitaux de Paris, Nutrition Department Pitié-Salpêtrière Hospital; Sorbonne Université, INSERM, NutriOmics Research Unit, Paris, France
| | - Sylvie Odent
- Centre de Référence Maladies Rares CLAD-Ouest, Service de Génétique Clinique, CHU Rennes, Rennes, France.,CNRS, IGDR (Institut de Génétique et Développement de Rennes) UMR 6290, Université de Rennes, Rennes, France
| | - Nicholas Katsanis
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Jean-Louis Mandel
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS UMR 7104, INSERM U964, Université de Strasbourg, Dept Transl Med and Neurogenetics Illkirch, France
| | - Erica E Davis
- Advanced Center for Translational and Genetic Medicine (ACT-GeM), Stanley Manne Children's Research Institute, Ann and Robert H. Lurie Children's Hospital of Chicago, Chicago, Illinois, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, Illinois, USA
| | - Hélène Dollfus
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Filière SENSGENE, Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jean Muller
- Laboratoire de Génétique Médicale, Institut de génétique médicale d'Alsace IGMA, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg UMRS_1112, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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9
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Liu H, Giguet-Valard AG, Simonet T, Szenker-Ravi E, Lambert L, Vincent-Delorme C, Scheidecker S, Fradin M, Morice-Picard F, Naudion S, Ciorna-Monferrato V, Colin E, Fellmann F, Blesson S, Jouk PS, Francannet C, Petit F, Moutton S, Lehalle D, Chassaing N, El Zein L, Bazin A, Bénéteau C, Attié-Bitach T, Hanu SM, Brechard MP, Chiesa J, Pasquier L, Rooryck-Thambo C, Van Maldergem L, Cabrol C, El Chehadeh S, Vasiljevic A, Isidor B, Abel C, Thevenon J, Di Filippo S, Vigouroux-Castera A, Attia J, Quelin C, Odent S, Piard J, Giuliano F, Putoux A, Khau Van Kien P, Yardin C, Touraine R, Reversade B, Bouvagnet P. Next-generation sequencing in a series of 80 fetuses with complex cardiac malformations and/or heterotaxy. Hum Mutat 2020; 41:2167-2178. [PMID: 33131162 DOI: 10.1002/humu.24132] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [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: 02/14/2020] [Revised: 09/21/2020] [Accepted: 10/02/2020] [Indexed: 11/07/2022]
Abstract
Herein, we report the screening of a large panel of genes in a series of 80 fetuses with congenital heart defects (CHDs) and/or heterotaxy and no cytogenetic anomalies. There were 49 males (61%/39%), with a family history in 28 cases (35%) and no parental consanguinity in 77 cases (96%). All fetuses had complex CHD except one who had heterotaxy and midline anomalies while 52 cases (65%) had heterotaxy in addition to CHD. Altogether, 29 cases (36%) had extracardiac and extra-heterotaxy anomalies. A pathogenic variant was found in 10/80 (12.5%) cases with a higher percentage in the heterotaxy group (8/52 cases, 15%) compared with the non-heterotaxy group (2/28 cases, 7%), and in 3 cases with extracardiac and extra-heterotaxy anomalies (3/29, 10%). The inheritance was recessive in six genes (DNAI1, GDF1, MMP21, MYH6, NEK8, and ZIC3) and dominant in two genes (SHH and TAB2). A homozygous pathogenic variant was found in three cases including only one case with known consanguinity. In conclusion, after removing fetuses with cytogenetic anomalies, next-generation sequencing discovered a causal variant in 12.5% of fetal cases with CHD and/or heterotaxy. Genetic counseling for future pregnancies was greatly improved. Surprisingly, unexpected consanguinity accounts for 20% of cases with identified pathogenic variants.
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Affiliation(s)
- Hui Liu
- Department of Anatomy, Hainan Medical College, Haikou, Hainan, China
| | | | - Thomas Simonet
- Centre de Biotechnologie Cellulaire, Groupe Hospitalier Est, CHU Lyon, Lyon, Bron, France
| | - Emmanuelle Szenker-Ravi
- Human Genetics & Embryology Laboratory, Institute of Medical Biology, A*STAR, Singapore, Singapore
| | - Laetitia Lambert
- Génétique Clinique UF6211, CHU Nancy, Maternité Régionale Universitaire, Nancy, France
| | | | - Sophie Scheidecker
- Service de Génétique Médicale, Hôpital de Hautepierre, CHU Strasbourg, Strasbourg, France
| | - Mélanie Fradin
- Service de Génétique Médicale, CHU Rennes, Rennes, France
| | - Fanny Morice-Picard
- Service de Génétique Médicale, Hôpital Pellegrin, CHU Bordeaux, Bordeaux, France
| | - Sophie Naudion
- Service de Génétique Médicale, Hôpital Pellegrin, CHU Bordeaux, Bordeaux, France
| | | | - Estelle Colin
- Département de Biochimie et Génétique, CHU Angers, Angers, France
| | | | - Sophie Blesson
- Service de Génétique, Centre Hospitalier Bretonneau, CHU Tours, Tours, France
| | - Pierre-Simon Jouk
- Département de Génétique et Reproduction, CHU Grenoble Alpes, Grenoble, France
| | - Christine Francannet
- Service de Génétique Médicale, Hôpital Estaing, CHU Clermont-Ferrand, Clermont-Ferrand, France
| | - Florence Petit
- Clinique de Génétique Guy Fontaine, Hôpital Jeanne de Flandres, CHU Lille, Lille, France
| | | | - Daphné Lehalle
- Département de Génétique Médicale, CHU Dijon, Dijon, France
| | - Nicolas Chassaing
- Service de Génétique Médicale, Hôpital Purpan, CHU Toulouse, Toulouse, France
| | - Loubna El Zein
- Biology Department, Lebanese University, Beirut, Lebanon
| | - Anne Bazin
- Centre de Diagnostic Prénatal, CH Pontoise, Cergy Pontoise, France
| | | | - Tania Attié-Bitach
- Département de Génétique et Institut Imagine, Hôpital Necker-Enfants Malades, Paris, France
| | - Sylvie M Hanu
- Clinique de Génétique Guy Fontaine, Hôpital Jeanne de Flandres, CHU Lille, Lille, France
| | | | - Jean Chiesa
- Unité de Génétique Médicale et Cytogénétique, Hôpital Caremeau, CHU Nîmes, Nîmes, France
| | | | | | | | | | - Salima El Chehadeh
- Service de Génétique Médicale, Hôpital de Hautepierre, CHU Strasbourg, Strasbourg, France
| | - Alexandre Vasiljevic
- Laboratoire d'Anatomo-pathologie, Groupe Hospitalier Est, CHU Lyon, Lyon, France
| | | | - Carine Abel
- Centre de Diagnostic Prénatal, Hôpital de la Croix-Rousse, CHU Lyon, Lyon, France
| | - Julien Thevenon
- Département de Génétique et Reproduction, CHU Grenoble Alpes, Grenoble, France
| | - Sylvie Di Filippo
- Service de Cardiologie Pédiatrique, Groupe Hospitalier Est, CHU Lyon, Lyon, France
| | | | - Jocelyne Attia
- Centre de Diagnostic Prénatal, Centre Hospitalier Lyon Sud, Lyon, France
| | - Chloé Quelin
- Service de Génétique Médicale, CHU Rennes, Rennes, France
| | - Sylvie Odent
- Service de Génétique Médicale, CHU Rennes, Rennes, France
| | - Juliette Piard
- Centre de Génétique Humaine, CHU Franche-Comté, Besançon, France
| | - Fabienne Giuliano
- Service de Génétique Médicale, Hôpital de l'Archet 2, CHU Nice, Nice, France
| | - Audrey Putoux
- Service de Génétique Clinique, Groupe Hospitalier Est, CHU Lyon, Lyon, France
| | - Philippe Khau Van Kien
- Unité de Génétique Médicale et Cytogénétique, Hôpital Caremeau, CHU Nîmes, Nîmes, France
| | - Catherine Yardin
- Service de Cytogénétique, Génétique Médicale et Biologie de la Reproduction, Hôpital de la Mère et de l'Enfant, CHU Dupuytren, Limoges, France
| | - Renaud Touraine
- Service de Génétique, Hôpital Nord, CHU Saint Etienne, Saint Etienne, France
| | - Bruno Reversade
- Human Genetics & Embryology Laboratory, Institute of Medical Biology, A*STAR, Singapore, Singapore
| | - Patrice Bouvagnet
- Centre de Diagnostic Prénatal, Hôpital MFME, Fort de France, Martinique, France
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10
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Gouronc A, Zilliox V, Jacquemont M, Darcel F, Leuvrey A, Nourisson E, Antin M, Alessandri J, Doray B, Gueguen P, Payet F, Randrianaivo H, Stoetzel C, Scheidecker S, Flodrops H, Dollfus H, Muller J. High prevalence of
Bardet‐Biedl
syndrome in
La Réunion
Island
is due to a founder variant in
ARL6/BBS3. Clin Genet 2020; 98:166-171. [DOI: 10.1111/cge.13768] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 12/11/2022]
Affiliation(s)
- Aurélie Gouronc
- Laboratoires de Diagnostic GénétiqueHôpitaux Universitaires de Strasbourg Strasbourg France
| | - Vincent Zilliox
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363)Hôpitaux Universitaires de Strasbourg Strasbourg France
| | | | - Françoise Darcel
- Service des Maladies Neurologiques RaresGHSR, CHU de La Réunion Saint Pierre La Réunion France
| | - Anne‐Sophie Leuvrey
- Laboratoires de Diagnostic GénétiqueHôpitaux Universitaires de Strasbourg Strasbourg France
| | - Elsa Nourisson
- Laboratoires de Diagnostic GénétiqueHôpitaux Universitaires de Strasbourg Strasbourg France
| | - Manuela Antin
- Laboratoires de Diagnostic GénétiqueHôpitaux Universitaires de Strasbourg Strasbourg France
| | - Jean‐Luc Alessandri
- Pole Femme‐Mère‐Enfants, CH Félix GuyonCHU de La Réunion Saint‐Denis La Réunion France
| | - Bérénice Doray
- Service de Génétique, CH Félix GuyonCHU de La Réunion Saint‐Denis La Réunion France
| | - Paul Gueguen
- Service de Génétique, CH Félix GuyonCHU de La Réunion Saint‐Denis La Réunion France
| | - Frédérique Payet
- Service de Génétique, CH Félix GuyonCHU de La Réunion Saint‐Denis La Réunion France
| | | | - Corinne Stoetzel
- Laboratoire de Génétique MédicaleINSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg Faculté de médecine de Strasbourg Strasbourg France
| | - Sophie Scheidecker
- Laboratoires de Diagnostic GénétiqueHôpitaux Universitaires de Strasbourg Strasbourg France
- Laboratoire de Génétique MédicaleINSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg Faculté de médecine de Strasbourg Strasbourg France
| | - Hugues Flodrops
- Service de Pédiatrie, GHSRCHU de La Réunion Saint Pierre La Réunion France
| | - Hélène Dollfus
- Laboratoire de Génétique MédicaleINSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg Faculté de médecine de Strasbourg Strasbourg France
- Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENEHôpitaux Universitaires de Strasbourg Strasbourg France
- Service de Génétique MédicaleInstitut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg Strasbourg France
| | - Jean Muller
- Laboratoires de Diagnostic GénétiqueHôpitaux Universitaires de Strasbourg Strasbourg France
- Unité Fonctionnelle de Bioinformatique Médicale appliquée au diagnostic (UF7363)Hôpitaux Universitaires de Strasbourg Strasbourg France
- Laboratoire de Génétique MédicaleINSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg Faculté de médecine de Strasbourg Strasbourg France
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11
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Kröll-Hermi A, Ebstein F, Stoetzel C, Geoffroy V, Schaefer E, Scheidecker S, Bär S, Takamiya M, Kawakami K, Zieba BA, Studer F, Pelletier V, Eyermann C, Speeg-Schatz C, Laugel V, Lipsker D, Sandron F, McGinn S, Boland A, Deleuze JF, Kuhn L, Chicher J, Hammann P, Friant S, Etard C, Krüger E, Muller J, Strähle U, Dollfus H. Proteasome subunit PSMC3 variants cause neurosensory syndrome combining deafness and cataract due to proteotoxic stress. EMBO Mol Med 2020; 12:e11861. [PMID: 32500975 PMCID: PMC7338805 DOI: 10.15252/emmm.201911861] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 05/04/2020] [Accepted: 05/07/2020] [Indexed: 12/13/2022] Open
Abstract
The ubiquitin–proteasome system degrades ubiquitin‐modified proteins to maintain protein homeostasis and to control signalling. Whole‐genome sequencing of patients with severe deafness and early‐onset cataracts as part of a neurological, sensorial and cutaneous novel syndrome identified a unique deep intronic homozygous variant in the PSMC3 gene, encoding the proteasome ATPase subunit Rpt5, which lead to the transcription of a cryptic exon. The proteasome content and activity in patient's fibroblasts was however unaffected. Nevertheless, patient's cells exhibited impaired protein homeostasis characterized by accumulation of ubiquitinated proteins suggesting severe proteotoxic stress. Indeed, the TCF11/Nrf1 transcriptional pathway allowing proteasome recovery after proteasome inhibition is permanently activated in the patient's fibroblasts. Upon chemical proteasome inhibition, this pathway was however impaired in patient's cells, which were unable to compensate for proteotoxic stress although a higher proteasome content and activity. Zebrafish modelling for knockout in PSMC3 remarkably reproduced the human phenotype with inner ear development anomalies as well as cataracts, suggesting that Rpt5 plays a major role in inner ear, lens and central nervous system development.
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Affiliation(s)
- Ariane Kröll-Hermi
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France.,Karlsruhe Institute of Technology (KIT), Institut für Biologische und Chemische Systeme (IBCS, BIP), Eggenstein-Leopoldshafen, Germany
| | - Frédéric Ebstein
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France
| | - Elise Schaefer
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Séverine Bär
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, Strasbourg, France
| | - Masanari Takamiya
- Karlsruhe Institute of Technology (KIT), Institut für Biologische und Chemische Systeme (IBCS, BIP), Eggenstein-Leopoldshafen, Germany
| | - Koichi Kawakami
- Laboratory of Molecular and Developmental Biology, National Institute of Genetics, Mishima, Japan.,Department of Genetics, SOKENDAI (The Graduate University for Advanced Studies), Mishima, Japan
| | - Barbara A Zieba
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Fouzia Studer
- Filière SENSGENE, Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Valerie Pelletier
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Filière SENSGENE, Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Carine Eyermann
- Service de chirurgie ORL, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Claude Speeg-Schatz
- Department of Ophthalmology, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Vincent Laugel
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France.,Service de Pédiatrie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Dan Lipsker
- Faculté de Médecine, Hôpitaux Universitaires, Université de Strasbourg et Clinique Dermatologique, Strasbourg, France
| | - Florian Sandron
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Steven McGinn
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Anne Boland
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, Evry, France.,Centre d'études du polymorphisme humain-Fondation Jean Dausset, Paris, France
| | - Lauriane Kuhn
- CNRS FRC1589, Institut de Biologie Moléculaire et Cellulaire (IBMC), Plateforme Protéomique Strasbourg-Esplanade, Strasbourg, France
| | - Johana Chicher
- CNRS FRC1589, Institut de Biologie Moléculaire et Cellulaire (IBMC), Plateforme Protéomique Strasbourg-Esplanade, Strasbourg, France
| | - Philippe Hammann
- CNRS FRC1589, Institut de Biologie Moléculaire et Cellulaire (IBMC), Plateforme Protéomique Strasbourg-Esplanade, Strasbourg, France
| | - Sylvie Friant
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, Strasbourg, France
| | - Christelle Etard
- Karlsruhe Institute of Technology (KIT), Institut für Biologische und Chemische Systeme (IBCS, BIP), Eggenstein-Leopoldshafen, Germany
| | - Elke Krüger
- Institut für Medizinische Biochemie und Molekularbiologie (IMBM), Universitätsmedizin Greifswald, Greifswald, Germany
| | - Jean Muller
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Uwe Strähle
- Karlsruhe Institute of Technology (KIT), Institut für Biologische und Chemische Systeme (IBCS, BIP), Eggenstein-Leopoldshafen, Germany
| | - Hélène Dollfus
- Laboratoire de Génétique Médicale, INSERM, UMRS_1112, Institut de Génétique Médicale d'Alsace (IGMA), Université de Strasbourg, Faculté de médecine de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Filière SENSGENE, Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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12
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Durand B, Stoetzel C, Schaefer E, Calmels N, Scheidecker S, Kempf N, De Melo C, Guilbert AS, Timbolschi D, Donato L, Astruc D, Sauer A, Antal MC, Dollfus H, El Chehadeh S. A severe case of Frank-ter Haar syndrome and literature review: Further delineation of the phenotypical spectrum. Eur J Med Genet 2020; 63:103857. [DOI: 10.1016/j.ejmg.2020.103857] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 12/07/2019] [Accepted: 01/17/2020] [Indexed: 11/26/2022]
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13
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Estrada-Cuzcano A, Etard C, Delvallée C, Stoetzel C, Schaefer E, Scheidecker S, Geoffroy V, Schneider A, Studer F, Mattioli F, Chennen K, Sigaudy S, Plassard D, Poch O, Piton A, Strahle U, Muller J, Dollfus H. Novel IQCE variations confirm its role in postaxial polydactyly and cause ciliary defect phenotype in zebrafish. Hum Mutat 2019; 41:240-254. [PMID: 31549751 DOI: 10.1002/humu.23924] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 03/20/2019] [Revised: 09/06/2019] [Accepted: 09/15/2019] [Indexed: 12/12/2022]
Abstract
Polydactyly is one of the most frequent inherited defects of the limbs characterized by supernumerary digits and high-genetic heterogeneity. Among the many genes involved, either in isolated or syndromic forms, eight have been implicated in postaxial polydactyly (PAP). Among those, IQCE has been recently identified in a single consanguineous family. Using whole-exome sequencing in patients with uncharacterized ciliopathies, including PAP, we identified three families with biallelic pathogenic variations in IQCE. Interestingly, the c.895_904del (p.Val301Serfs*8) was found in all families without sharing a common haplotype, suggesting a recurrent mechanism. Moreover, in two families, the systemic phenotype could be explained by additional pathogenic variants in known genes (TULP1, ATP6V1B1). RNA expression analysis on patients' fibroblasts confirms that the dysfunction of IQCE leads to the dysregulation of genes associated with the hedgehog-signaling pathway, and zebrafish experiments demonstrate a full spectrum of phenotypes linked to defective cilia: Body curvature, kidney cysts, left-right asymmetry, misdirected cilia in the pronephric duct, and retinal defects. In conclusion, we identified three additional families confirming IQCE as a nonsyndromic PAP gene. Our data emphasize the importance of taking into account the complete set of variations of each individual, as each clinical presentation could finally be explained by multiple genes.
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Affiliation(s)
- Alejandro Estrada-Cuzcano
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France
| | - Christelle Etard
- Institute of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Karlsruhe, Eggenstein-Leopoldshafen, Germany
| | - Clarisse Delvallée
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France
| | - Corinne Stoetzel
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France
| | - Elise Schaefer
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France
| | - Aline Schneider
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France
| | - Fouzia Studer
- Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Francesca Mattioli
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch-Graffenstaden, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U1258, Illkirch-Graffenstaden, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS UMR 7104, Illkirch-Graffenstaden, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Illkirch, France
| | - Kirsley Chennen
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France.,Complex Systems and Translational Bioinformatics, ICube UMR 7357, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Sabine Sigaudy
- Département de Génétique Médicale, Hôpital de la Timone, Marseille, France
| | | | - Olivier Poch
- Complex Systems and Translational Bioinformatics, ICube UMR 7357, Fédération de Médecine Translationnelle, Université de Strasbourg, Strasbourg, France
| | - Amélie Piton
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch-Graffenstaden, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, INSERM U1258, Illkirch-Graffenstaden, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS UMR 7104, Illkirch-Graffenstaden, France.,Institut de Génétique et de Biologie Moléculaire et Cellulaire, Université de Strasbourg, Illkirch, France
| | - Uwe Strahle
- Institute of Toxicology and Genetics (ITG), Karlsruhe Institute of Technology (KIT), Karlsruhe, Eggenstein-Leopoldshafen, Germany
| | - Jean Muller
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Hélène Dollfus
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine, FMTS, Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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14
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Lornage X, Schartner V, Balbueno I, Willis T, Echaniz-Laguna A, Malfatti E, Scheidecker S, Biancalana V, Sewry C, Romero N, Laporte J, Böhm J. P.114Clinical, histological, and genetic characterization of PYROXD1-related myopathy. Neuromuscul Disord 2019. [DOI: 10.1016/j.nmd.2019.06.170] [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: 11/26/2022]
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15
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Lornage X, Schartner V, Balbueno I, Biancalana V, Willis T, Echaniz-Laguna A, Scheidecker S, Quinlivan R, Fardeau M, Malfatti E, Lannes B, Sewry C, Romero NB, Laporte J, Böhm J. Clinical, histological, and genetic characterization of PYROXD1-related myopathy. Acta Neuropathol Commun 2019; 7:138. [PMID: 31455395 PMCID: PMC6710884 DOI: 10.1186/s40478-019-0781-8] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Accepted: 07/25/2019] [Indexed: 12/28/2022] Open
Abstract
Recessive mutations in PYROXD1, encoding an oxidoreductase, were recently reported in families with congenital myopathy or limb-girdle muscular dystrophy. Here we describe three novel PYROXD1 families at the clinical, histological, and genetic level. Histological analyses on muscle biopsies from all families revealed fiber size variability, endomysial fibrosis, and muscle fibers with multiple internal nuclei and cores. Further characterization of the structural muscle defects uncovered aggregations of myofibrillar proteins, and provided evidence for enhanced oxidative stress. Sequencing identified homozygous or compound heterozygous PYROXD1 mutations including the first deep intronic mutation reinforcing a cryptic donor splice site and resulting in mRNA instability through exonisation of an intronic segment. Overall, this work expands the PYROXD1 mutation spectrum, defines and specifies the histopathological hallmarks of the disorder, and indicates that oxidative stress contributes to the pathomechanism. Comparison of all new and published cases uncovered a genotype/phenotype correlation with a more severe and early-onset phenotypic presentation of patients harboring splice mutations resulting in reduced PYROXD1 protein levels compared with patients carrying missense mutations.
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16
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Marini C, Porro A, Rastetter A, Dalle C, Rivolta I, Bauer D, Oegema R, Nava C, Parrini E, Mei D, Mercer C, Dhamija R, Chambers C, Coubes C, Thévenon J, Kuentz P, Julia S, Pasquier L, Dubourg C, Carré W, Rosati A, Melani F, Pisano T, Giardino M, Innes AM, Alembik Y, Scheidecker S, Santos M, Figueiroa S, Garrido C, Fusco C, Frattini D, Spagnoli C, Binda A, Granata T, Ragona F, Freri E, Franceschetti S, Canafoglia L, Castellotti B, Gellera C, Milanesi R, Mancardi MM, Clark DR, Kok F, Helbig KL, Ichikawa S, Sadler L, Neupauerová J, Laššuthova P, Šterbová K, Laridon A, Brilstra E, Koeleman B, Lemke JR, Zara F, Striano P, Soblet J, Smits G, Deconinck N, Barbuti A, DiFrancesco D, LeGuern E, Guerrini R, Santoro B, Hamacher K, Thiel G, Moroni A, DiFrancesco JC, Depienne C. HCN1 mutation spectrum: from neonatal epileptic encephalopathy to benign generalized epilepsy and beyond. Brain 2019; 141:3160-3178. [PMID: 30351409 DOI: 10.1093/brain/awy263] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2018] [Accepted: 08/09/2018] [Indexed: 12/15/2022] Open
Abstract
Hyperpolarization-activated cyclic nucleotide-gated (HCN) channels control neuronal excitability and their dysfunction has been linked to epileptogenesis but few individuals with neurological disorders related to variants altering HCN channels have been reported so far. In 2014, we described five individuals with epileptic encephalopathy due to de novo HCN1 variants. To delineate HCN1-related disorders and investigate genotype-phenotype correlations further, we assembled a cohort of 33 unpublished patients with novel pathogenic or likely pathogenic variants: 19 probands carrying 14 different de novo mutations and four families with dominantly inherited variants segregating with epilepsy in 14 individuals, but not penetrant in six additional individuals. Sporadic patients had epilepsy with median onset at age 7 months and in 36% the first seizure occurred during a febrile illness. Overall, considering familial and sporadic patients, the predominant phenotypes were mild, including genetic generalized epilepsies and genetic epilepsy with febrile seizures plus (GEFS+) spectrum. About 20% manifested neonatal/infantile onset otherwise unclassified epileptic encephalopathy. The study also included eight patients with variants of unknown significance: one adopted patient had two HCN1 variants, four probands had intellectual disability without seizures, and three individuals had missense variants inherited from an asymptomatic parent. Of the 18 novel pathogenic missense variants identified, 12 were associated with severe phenotypes and clustered within or close to transmembrane domains, while variants segregating with milder phenotypes were located outside transmembrane domains, in the intracellular N- and C-terminal parts of the channel. Five recurrent variants were associated with similar phenotypes. Using whole-cell patch-clamp, we showed that the impact of 12 selected variants ranged from complete loss-of-function to significant shifts in activation kinetics and/or voltage dependence. Functional analysis of three different substitutions altering Gly391 revealed that these variants had different consequences on channel biophysical properties. The Gly391Asp variant, associated with the most severe, neonatal phenotype, also had the most severe impact on channel function. Molecular dynamics simulation on channel structure showed that homotetramers were not conducting ions because the permeation path was blocked by cation(s) strongly complexed to the Asp residue, whereas heterotetramers showed an instantaneous current component possibly linked to deformation of the channel pore. In conclusion, our results considerably expand the clinical spectrum related to HCN1 variants to include common generalized epilepsy phenotypes and further illustrate how HCN1 has a pivotal function in brain development and control of neuronal excitability.
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Affiliation(s)
- Carla Marini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy.,EuroEPINOMICS RES Consortium
| | | | - Agnès Rastetter
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Carine Dalle
- Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France
| | - Ilaria Rivolta
- School of Medicine and Surgery, University Milano-Bicocca, Monza, Italy
| | - Daniel Bauer
- Computational Biology and Simulation Group, Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
| | - Renske Oegema
- Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Caroline Nava
- EuroEPINOMICS RES Consortium.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Génétique, Paris, France
| | - Elena Parrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy
| | - Davide Mei
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy
| | - Catherine Mercer
- Wessex Clinical Genetics Service, Princess Anne Hospital, Southampton, UK
| | - Radhika Dhamija
- Department of Clinical Genomics and Neurology, Mayo Clinic, Phoenix, AZ, USA
| | - Chelsea Chambers
- Department of Neurosciences, University of Virginia, Charlottesville, VA, USA
| | - Christine Coubes
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, Hôpital Arnaud de Villeneuve, Montpellier, France
| | - Julien Thévenon
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon and INSERM UMR 1231 GAD team, Genetics of Developmental Anomalies, Université de Bourgogne-Franche Comté, Dijon, France
| | - Paul Kuentz
- FHU-TRANSLAD, Université de Bourgogne/CHU Dijon and INSERM UMR 1231 GAD team, Genetics of Developmental Anomalies, Université de Bourgogne-Franche Comté, Dijon, France.,Génétique Biologique Histologie, CHRU de Besançon, Besançon, France
| | - Sophie Julia
- Service de génétique médicale, Pôle de biologie, CHU de Toulouse - Hôpital Purpan, Toulouse, France
| | - Laurent Pasquier
- Service de Génétique Clinique, Centre Référence Déficiences Intellectuelles de causes rares (CRDI), CHU Rennes, Rennes, France
| | - Christèle Dubourg
- Laboratoire de Génétique Moléculaire et Génomique, CHU de Rennes, Rennes, France
| | - Wilfrid Carré
- Laboratoire de Génétique Moléculaire et Génomique, CHU de Rennes, Rennes, France
| | - Anna Rosati
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy
| | - Federico Melani
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy
| | - Tiziana Pisano
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy
| | - Maria Giardino
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy
| | - A Micheil Innes
- Department of Medical Genetics and Alberta Children's Hospital Research Institute, Cumming School of Medicine, University of Calgary, Calgary, Alberta, Canada
| | - Yves Alembik
- Laboratoires de génétique, Institut de génétique médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoires de génétique, Institut de génétique médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Manuela Santos
- Neuropediatric Department, Centro Hospitalar do Porto, Porto, Portugal
| | - Sonia Figueiroa
- Neuropediatric Department, Centro Hospitalar do Porto, Porto, Portugal
| | - Cristina Garrido
- Neuropediatric Department, Centro Hospitalar do Porto, Porto, Portugal
| | - Carlo Fusco
- Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Daniele Frattini
- Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Carlotta Spagnoli
- Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Reggio Emilia, Italy
| | - Anna Binda
- School of Medicine and Surgery, University Milano-Bicocca, Monza, Italy
| | - Tiziana Granata
- Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | | | - Elena Freri
- Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | | | | | | | - Cinzia Gellera
- Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Raffaella Milanesi
- Department of Biosciences, The PaceLab, Università degli Studi di Milano, Milan, Italy
| | - Maria Margherita Mancardi
- Child Neuropsychiatry Unit, Department of Medical and Surgical Neurosciences and Rehabilitation, IRCCS Istituto Giannina Gaslini, Genova, Italy
| | | | - Fernando Kok
- Mendelics Genomic Analysis, Sao Paulo, SP, Brazil
| | - Katherine L Helbig
- Division of Neurology, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Shoji Ichikawa
- Department of Clinical Diagnostics, Ambry Genetics, Aliso Viejo, CA, USA
| | - Laurie Sadler
- Division of Genetics, Department of Pediatrics, Oishei Children's Hospital, Jacobs School of Medicine and Biomedical Sciences, University of Buffalo, State University of New York, Buffalo, NY, USA
| | - Jana Neupauerová
- Department of Child Neurology, Charles University 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Petra Laššuthova
- Department of Child Neurology, Charles University 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Katalin Šterbová
- EuroEPINOMICS RES Consortium.,Department of Child Neurology, Charles University 2nd Faculty of Medicine and University Hospital Motol, Prague, Czech Republic
| | - Annick Laridon
- Department of Neurology, Academic Center for Epileptology, Kempenhaeghe/Maastricht University Medical Center, Heeze, The Netherlands
| | - Eva Brilstra
- EuroEPINOMICS RES Consortium.,Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Bobby Koeleman
- EuroEPINOMICS RES Consortium.,Department of Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
| | - Johannes R Lemke
- EuroEPINOMICS RES Consortium.,Institute of Human Genetics, University of Leipzig Hospitals and Clinics, Leipzig, Germany
| | - Federico Zara
- Laboratory of Neurogenetics and Neuroscience, Institute G Gaslini, Genova, Italy
| | - Pasquale Striano
- EuroEPINOMICS RES Consortium.,Pediatric Neurology and Muscular Diseases Unit, Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, 'G Gaslini' Institute, Genova, Italy
| | - Julie Soblet
- Department of Genetics, Hôpital Universitaire des Enfants Reine Fabiola, ULB Center of Human Genetics, Université Libre de Bruxelles, Brussels, Belgium.,Department of Genetics, Hôpital Erasme ULB Center of Human Genetics, Université Libre de Bruxelles, Brussels, Belgium.,Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles, Brussels, Belgium
| | - Guillaume Smits
- Department of Genetics, Hôpital Universitaire des Enfants Reine Fabiola, ULB Center of Human Genetics, Université Libre de Bruxelles, Brussels, Belgium.,Department of Genetics, Hôpital Erasme ULB Center of Human Genetics, Université Libre de Bruxelles, Brussels, Belgium.,Interuniversity Institute of Bioinformatics in Brussels, Université Libre de Bruxelles, Brussels, Belgium
| | - Nicolas Deconinck
- Department of Pediatric Neurology, Hôpital Universitaire des Enfants Reine Fabiola, Université Libre de Bruxelles, ULB, Brussels, Belgium
| | - Andrea Barbuti
- Department of Biosciences, The PaceLab, Università degli Studi di Milano, Milan, Italy
| | - Dario DiFrancesco
- Department of Biosciences, The PaceLab, Università degli Studi di Milano, Milan, Italy
| | - Eric LeGuern
- EuroEPINOMICS RES Consortium.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,AP-HP, Groupe Hospitalier Pitié-Salpêtrière, Département de Génétique, Paris, France
| | - Renzo Guerrini
- Pediatric Neurology, Neurogenetics and Neurobiology Unit and Laboratories, Neuroscience Department, A Meyer Children's Hospital, University of Florence, Viale Pieraccini 24, Florence, Italy.,EuroEPINOMICS RES Consortium
| | - Bina Santoro
- Department of Neuroscience, Columbia University, New York, NY, USA
| | - Kay Hamacher
- Computational Biology and Simulation Group, Department of Biology, Technische Universität Darmstadt, Darmstadt, Germany
| | - Gerhard Thiel
- Membrane Biophysics, Deparment of Biology, Technische Universität Darmstadt, Darmstadt, Germany
| | - Anna Moroni
- Department of Biosciences, University of Milan, Milan, Italy
| | - Jacopo C DiFrancesco
- Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy.,Department of Neurology, San Gerardo Hospital, University Milano-Bicocca, Monza, Italy
| | - Christel Depienne
- EuroEPINOMICS RES Consortium.,Inserm U 1127, CNRS UMR 7225, Sorbonne Universités, UPMC Univ Paris 06 UMR S 1127, Institut du Cerveau et de la Moelle épinière, ICM, Paris, France.,IGBMC, CNRS UMR 7104/INSERM U964/Université de Strasbourg, Illkirch, France.,Institute of Human Genetics, University Hospital Essen, University Duisburg-Essen, Essen, Germany
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17
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Scheidecker S, Bär S, Stoetzel C, Geoffroy V, Lannes B, Rinaldi B, Fischer F, Becker HD, Pelletier V, Pagan C, Acquaviva-Bourdain C, Kremer S, Mirande M, Tranchant C, Muller J, Friant S, Dollfus H. Mutations in KARS cause a severe neurological and neurosensory disease with optic neuropathy. Hum Mutat 2019; 40:1826-1840. [PMID: 31116475 DOI: 10.1002/humu.23799] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [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: 03/19/2018] [Revised: 04/25/2019] [Accepted: 05/15/2019] [Indexed: 11/09/2022]
Abstract
Mutations in genes encoding aminoacyl-tRNA synthetases have been reported in several neurological disorders. KARS is a dual localized lysyl-tRNA synthetase and its cytosolic isoform belongs to the multiple aminoacyl-tRNA synthetase complex (MSC). Biallelic mutations in the KARS gene were described in a wide phenotypic spectrum ranging from nonsyndromic deafness to complex impairments. Here, we report on a patient with severe neurological and neurosensory disease investigated by whole-exome sequencing and found to carry biallelic mutations c.683C>T (p.Pro228Leu) and c.871T>G (p.Phe291Val), the second one being novel, in the KARS gene. The patient presented with an atypical clinical presentation with an optic neuropathy not previously reported. At the cellular level, we show that cytoplasmic KARS was expressed at a lower level in patient cells and displayed decreased interaction with MSC. In vitro, these two KARS variants have a decreased aminoacylation activity compared with wild-type KARS, the p.Pro228Leu being the most affected. Our data suggest that dysfunction of cytoplasmic KARS resulted in a decreased level of translation of the nuclear-encoded lysine-rich proteins belonging to the respiratory chain complex, thus impairing mitochondria functions.
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Affiliation(s)
- Sophie Scheidecker
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Université de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Séverine Bär
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Université de Strasbourg, CNRS, Strasbourg, France
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Université de Strasbourg, Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Université de Strasbourg, Strasbourg, France
| | - Béatrice Lannes
- Service d'Anatomo-pathologie, Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Bruno Rinaldi
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Université de Strasbourg, CNRS, Strasbourg, France
| | - Frédéric Fischer
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Université de Strasbourg, CNRS, Strasbourg, France
| | - Hubert D Becker
- Laboratoire de Génétique Moléculaire, Génomique, Microbiologie (GMGM), UMR7156, Université de Strasbourg, CNRS, Strasbourg, France
| | - Valérie Pelletier
- Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Cécile Pagan
- Service de Biochimie et Biologie Moléculaire, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, Lyon, France
| | - Cécile Acquaviva-Bourdain
- Service de Biochimie et Biologie Moléculaire, Centre de Biologie et de Pathologie Est, Hospices Civils de Lyon, Lyon, France
| | - Stéphane Kremer
- Service de Neuroradiologie/Imagerie 2, CHU de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Marc Mirande
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, University Paris-Sud, Université Paris-Saclay, Gif-sur-Yvette, France
| | - Christine Tranchant
- Service de Neurologie Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Jean Muller
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Université de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sylvie Friant
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Hélène Dollfus
- Laboratoire de Génétique Médicale, INSERM U1112, Institut de Génétique Médicale d'Alsace, Université de Strasbourg, Strasbourg, France.,Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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18
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Geoffroy V, Stoetzel C, Scheidecker S, Schaefer E, Perrault I, Bär S, Kröll A, Delbarre M, Antin M, Leuvrey AS, Henry C, Blanché H, Decker E, Kloth K, Klaus G, Mache C, Martin-Coignard D, McGinn S, Boland A, Deleuze JF, Friant S, Saunier S, Rozet JM, Bergmann C, Dollfus H, Muller J. Whole-genome sequencing in patients with ciliopathies uncovers a novel recurrent tandem duplication in IFT140. Hum Mutat 2018; 39:983-992. [PMID: 29688594 DOI: 10.1002/humu.23539] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [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: 01/29/2018] [Revised: 04/10/2018] [Accepted: 04/16/2018] [Indexed: 12/30/2022]
Abstract
Ciliopathies represent a wide spectrum of rare diseases with overlapping phenotypes and a high genetic heterogeneity. Among those, IFT140 is implicated in a variety of phenotypes ranging from isolated retinis pigmentosa to more syndromic cases. Using whole-genome sequencing in patients with uncharacterized ciliopathies, we identified a novel recurrent tandem duplication of exon 27-30 (6.7 kb) in IFT140, c.3454-488_4182+2588dup p.(Tyr1152_Thr1394dup), missed by whole-exome sequencing. Pathogenicity of the mutation was assessed on the patients' skin fibroblasts. Several hundreds of patients with a ciliopathy phenotype were screened and biallelic mutations were identified in 11 families representing 12 pathogenic variants of which seven are novel. Among those unrelated families especially with a Mainzer-Saldino syndrome, eight carried the same tandem duplication (two at the homozygous state and six at the heterozygous state). In conclusion, we demonstrated the implication of structural variations in IFT140-related diseases expanding its mutation spectrum. We also provide evidences for a unique genomic event mediated by an Alu-Alu recombination occurring on a shared haplotype. We confirm that whole-genome sequencing can be instrumental in the ability to detect structural variants for genomic disorders.
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Affiliation(s)
- Véronique Geoffroy
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France
| | - Corinne Stoetzel
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Elise Schaefer
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Isabelle Perrault
- Laboratory of Genetics in Ophthalmology (LGO), INSERM UMR1163, Institute of Genetic Diseases, Imagine, Paris Descartes University, Paris, France
| | - Séverine Bär
- Department of Molecular and Cellular Genetics, UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, Strasbourg, France
| | - Ariane Kröll
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France
| | - Marion Delbarre
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Manuela Antin
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Anne-Sophie Leuvrey
- Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Hélène Blanché
- Centre d'études du polymorphisme humain-Fondation Jean Dausset, Paris, France
| | - Eva Decker
- Center for Human Genetics, Bioscientia, Ingelheim, Germany
| | - Katja Kloth
- Institut für Humangenetik, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Germany
| | - Günter Klaus
- University Marburg, KfH-Nierenzentrum für Kinder und Jugendliche, Marburg, Germany
| | - Christoph Mache
- Department of Pediatrics, Medical University of Graz, Graz, Austria
| | | | - Steven McGinn
- CNRGH, Institut de Biologie François Jacob, DRF, CEA, Evry, France
| | - Anne Boland
- CNRGH, Institut de Biologie François Jacob, DRF, CEA, Evry, France
| | - Jean-François Deleuze
- Centre d'études du polymorphisme humain-Fondation Jean Dausset, Paris, France.,CNRGH, Institut de Biologie François Jacob, DRF, CEA, Evry, France
| | - Sylvie Friant
- Department of Molecular and Cellular Genetics, UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, Strasbourg, France
| | | | - Jean-Michel Rozet
- Laboratory of Genetics in Ophthalmology (LGO), INSERM UMR1163, Institute of Genetic Diseases, Imagine, Paris Descartes University, Paris, France
| | - Carsten Bergmann
- Center for Human Genetics, Bioscientia, Ingelheim, Germany.,Department of Medicine, University Hospital Freiburg, Freiburg, Germany
| | - Hélène Dollfus
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France.,Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jean Muller
- Laboratoire de Génétique médicale, UMR_S INSERM U1112, IGMA, Faculté de Médecine FMTS, Université de Strasbourg, Strasbourg, France.,Laboratoires de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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19
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Miguet M, Faivre L, Amiel J, Nizon M, Touraine R, Prieur F, Pasquier L, Lefebvre M, Thevenon J, Dubourg C, Julia S, Sarret C, Remerand G, Francannet C, Laffargue F, Boespflug-Tanguy O, David A, Isidor B, Vigneron J, Leheup B, Lambert L, Philippe C, Béri-Dexheimer M, Cuisset JM, Andrieux J, Plessis G, Toutain A, Guibaud L, Cormier-Daire V, Rio M, Bonnefont JP, Echenne B, Journel H, Burglen L, Chantot-Bastaraud S, Bienvenu T, Baumann C, Perrin L, Drunat S, Jouk PS, Dieterich K, Devillard F, Lacombe D, Philip N, Sigaudy S, Moncla A, Missirian C, Badens C, Perreton N, Thauvin-Robinet C, AChro-Puce R, Pedespan JM, Rooryck C, Goizet C, Vincent-Delorme C, Duban-Bedu B, Bahi-Buisson N, Afenjar A, Maincent K, Héron D, Alessandri JL, Martin-Coignard D, Lesca G, Rossi M, Raynaud M, Callier P, Mosca-Boidron AL, Marle N, Coutton C, Satre V, Caignec CL, Malan V, Romana S, Keren B, Tabet AC, Kremer V, Scheidecker S, Vigouroux A, Lackmy-Port-Lis M, Sanlaville D, Till M, Carneiro M, Gilbert-Dussardier B, Willems M, Van Esch H, Portes VD, El Chehadeh S. Further delineation of the MECP2 duplication syndrome phenotype in 59 French male patients, with a particular focus on morphological and neurological features. J Med Genet 2018; 55:359-371. [PMID: 29618507 DOI: 10.1136/jmedgenet-2017-104956] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [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: 09/06/2017] [Revised: 02/04/2018] [Accepted: 02/15/2018] [Indexed: 12/22/2022]
Abstract
The Xq28 duplication involving the MECP2 gene (MECP2 duplication) has been mainly described in male patients with severe developmental delay (DD) associated with spasticity, stereotypic movements and recurrent infections. Nevertheless, only a few series have been published. We aimed to better describe the phenotype of this condition, with a focus on morphological and neurological features. Through a national collaborative study, we report a large French series of 59 affected males with interstitial MECP2 duplication. Most of the patients (93%) shared similar facial features, which evolved with age (midface hypoplasia, narrow and prominent nasal bridge, thick lower lip, large prominent ears), thick hair, livedo of the limbs, tapered fingers, small feet and vasomotor troubles. Early hypotonia and global DD were constant, with 21% of patients unable to walk. In patients able to stand, lower limbs weakness and spasticity led to a singular standing habitus: flexion of the knees, broad-based stance with pseudo-ataxic gait. Scoliosis was frequent (53%), such as divergent strabismus (76%) and hypermetropia (54%), stereotypic movements (89%), without obvious social withdrawal and decreased pain sensitivity (78%). Most of the patients did not develop expressive language, 35% saying few words. Epilepsy was frequent (59%), with a mean onset around 7.4 years of age, and often (62%) drug-resistant. Other medical issues were frequent: constipation (78%), and recurrent infections (89%), mainly lung. We delineate the clinical phenotype of MECP2 duplication syndrome in a large series of 59 males. Pulmonary hypertension appeared as a cause of early death in these patients, advocating its screening early in life.
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Affiliation(s)
- Marguerite Miguet
- Service de génétique médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares "Anomalies du développement et syndromes malformatifs", Centre de Référence Maladies Rares "Des déficiences intellectuelles de causes rares", Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Laurence Faivre
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du développement et syndromes malformatifs», Centre de Génétique, CHU de Dijon, Dijon, France
| | - Jeanne Amiel
- Service de Génétique Clinique, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Mathilde Nizon
- Service de Génétique Clinique, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Renaud Touraine
- Service de Génétique Clinique, CHU de Saint-Etienne, Saint-Etienne, France
| | - Fabienne Prieur
- Service de Génétique Clinique, CHU de Saint-Etienne, Saint-Etienne, France
| | - Laurent Pasquier
- Service de Génétique Clinique, CLAD Ouest, CHU de Rennes, Rennes, France
| | - Mathilde Lefebvre
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du développement et syndromes malformatifs», Centre de Génétique, CHU de Dijon, Dijon, France
| | - Julien Thevenon
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du développement et syndromes malformatifs», Centre de Génétique, CHU de Dijon, Dijon, France
| | | | - Sophie Julia
- Service de Génétique Médicale, CHU de Toulouse, Toulouse, France
| | - Catherine Sarret
- Service de Neuropédiatrie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Ganaëlle Remerand
- Service de Neuropédiatrie, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Christine Francannet
- Service de Génétique Médicale, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Fanny Laffargue
- Service de Génétique Médicale, CHU de Clermont-Ferrand, Clermont-Ferrand, France
| | - Odile Boespflug-Tanguy
- Service de Neuropédiatrie et Maladies Métaboliques, Hôpital Robert Debré, APHP, Paris, France
| | - Albert David
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | - Bertrand Isidor
- Service de Génétique Médicale, CHU de Nantes, Nantes, France
| | | | - Bruno Leheup
- Service de Génétique Médicale, CHU de Nancy, Nancy, France
| | | | | | | | | | - Joris Andrieux
- Laboratoire de Génétique Médicale, Hôpital Jeanne de Flandre, CHRU de Lille, Lille, France
| | | | | | - Laurent Guibaud
- Service de Radiologie, Hôpital Femme Mère Enfant, Bron, France
| | | | - Marlene Rio
- Service de Génétique Clinique, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Jean-Paul Bonnefont
- Laboratoire de Biologie Moléculaire, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Bernard Echenne
- Service de Neurologie pédiatrique, CHU de Montpellier, Montpellier, France
| | - Hubert Journel
- Service de Génétique, Centre Hospitalier de Vannes, Vannes, France
| | - Lydie Burglen
- Service de Génétique, Hôpital Armand Trousseau, APHP, Paris, France
| | | | - Thierry Bienvenu
- Laboratoire de Génétique Moléculaire, GH Cochin-Broca Hôtel Dieu, APHP, Paris, France
| | - Clarisse Baumann
- Service de Génétique Clinique, Hôpital Robert Debré, APHP, Paris, France
| | - Laurence Perrin
- Service de Génétique Clinique, Hôpital Robert Debré, APHP, Paris, France
| | - Séverine Drunat
- Laboratoire de Biologie Moléculaire, Hôpital Robert Debré, APHP, Paris, France
| | - Pierre-Simon Jouk
- Département de Génétique et Procréation - UMR CNRS 5525 TIMC-IMAG - équipe DYCTIM, CHU Grenoble, Grenoble, France
| | - Klaus Dieterich
- Département de Génétique et Procréation - UMR CNRS 5525 TIMC-IMAG - équipe DYCTIM, CHU Grenoble, Grenoble, France
| | - Françoise Devillard
- Département de Génétique et Procréation - UMR CNRS 5525 TIMC-IMAG - équipe DYCTIM, CHU Grenoble, Grenoble, France
| | - Didier Lacombe
- Université de Bordeaux, Laboratoire MRGM, INSERM U1211 and Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Nicole Philip
- Département de Génétique Médicale, Hôpital de la Timone, Marseille, France
| | - Sabine Sigaudy
- Département de Génétique Médicale, Hôpital de la Timone, Marseille, France
| | - Anne Moncla
- Laboratoire de Génétique Chromosomique, Hôpital de la Timone, Marseille, France
| | - Chantal Missirian
- Laboratoire de Génétique Chromosomique, Hôpital de la Timone, Marseille, France
| | - Catherine Badens
- Laboratoire de Biologie Moléculaire, Hôpital de la Timone, Marseille, France
| | | | - Christel Thauvin-Robinet
- FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du développement et syndromes malformatifs», Centre de Génétique, CHU de Dijon, Dijon, France
| | | | | | - Caroline Rooryck
- Université de Bordeaux, Laboratoire MRGM, INSERM U1211 and Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Cyril Goizet
- Université de Bordeaux, Laboratoire MRGM, INSERM U1211 and Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | | | - Bénédicte Duban-Bedu
- Centre de Génétique Chromosomique, GH de l'Institut Catholique de Lille, Hôpital Saint-Vincent-de-Paul, Lille, France
| | - Nadia Bahi-Buisson
- Service de Neuropédiatrie, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Alexandra Afenjar
- Département de Génétique Médicale, Centre de Référence "Malformations et maladies congénitales du cervelet", APHP, Hôpital Armand Trousseau, APHP, Paris, France
| | - Kim Maincent
- Département de Génétique Médicale, Centre de Référence "Malformations et maladies congénitales du cervelet", APHP, Hôpital Armand Trousseau, APHP, Paris, France
| | - Delphine Héron
- Service de Génétique Clinique, Hôpital Pitié-Salpêtrière, APHP, Paris, France
| | | | | | - Gaëtan Lesca
- Service de génétique, Hospices Civils de Lyon, Lyon, France.,INSERM U1028, CNRS UMR5292, Centre de Recherche en Neurosciences de Lyon, GENDEV Team, Université Claude Bernard Lyon 1, Lyon, France
| | - Massimiliano Rossi
- Service de génétique, Hospices Civils de Lyon, Lyon, France.,INSERM U1028, CNRS UMR5292, Centre de Recherche en Neurosciences de Lyon, GENDEV Team, Université Claude Bernard Lyon 1, Lyon, France
| | - Martine Raynaud
- Laboratoire de Génétique Moléculaire, CHRU de Tours, Tours, France
| | | | | | - Nathalie Marle
- Laboratoire de Cytogénétique, CHU de Dijon, Dijon, France
| | - Charles Coutton
- Laboratoire de Cytogénétique, CHU de Grenoble, Grenoble, France
| | - Véronique Satre
- Laboratoire de Cytogénétique, CHU de Grenoble, Grenoble, France
| | - Cédric Le Caignec
- Laboratoire de Cytogénétique, CHU de Nantes, Nantes, France.,Sarcomes osseux et remodelage des tissus calcifiés, Université Bretagne Loire, INSERM, UMR1238, Nantes, France
| | - Valérie Malan
- Laboratoire de Cytogénétique, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Serge Romana
- Laboratoire de Cytogénétique, Hôpital Necker Enfants Malades, APHP, Paris, France
| | - Boris Keren
- Laboratoire de Cytogénétique, Hôpital Pitié-Salpêtrière, APHP, Paris, France
| | - Anne-Claude Tabet
- Laboratoire de Cytogénétique, Hôpital Robert Debré, APHP, Paris, France
| | - Valérie Kremer
- Laboratoire de Cytogénétique, CHU de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Cytogénétique, CHU de Strasbourg, Hôpital de Hautepierre, Strasbourg, France
| | | | | | | | - Marianne Till
- Laboratoire de Cytogénétique, CHU de Lyon, Lyon, France
| | - Maryline Carneiro
- Service de Neuropédiatrie, CHU de Lyon, Hôpital Femme-Mère-Enfant, Lyon, France
| | | | | | - Hilde Van Esch
- Laboratory for Genetics of Cognition, Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Vincent Des Portes
- Centre de Référence Maladies Rares «Des déficiences intellectuelles de causes rares», HFME, Hospices Civils de Lyon and Université de Lyon, Lyon, France.,Institut des Sciences Cognitives, CNRS UMR 5304, Bron, France
| | - Salima El Chehadeh
- Service de génétique médicale, Institut de Génétique Médicale d'Alsace (IGMA), Centre de Référence Maladies Rares "Anomalies du développement et syndromes malformatifs", Centre de Référence Maladies Rares "Des déficiences intellectuelles de causes rares", Hôpitaux Universitaires de Strasbourg, Hôpital de Hautepierre, Strasbourg, France.,FHU TRANSLAD, Centre de Référence Maladies Rares «Anomalies du développement et syndromes malformatifs», Centre de Génétique, CHU de Dijon, Dijon, France
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Kieny A, Kremer V, Scheidecker S, Lipsker D. 9q22.3 Microdeletion Syndrome with Multiple Basal Cell Carcinomas Treated with Vismodegib: Three Key Messages in One Patient. Acta Derm Venereol 2018; 98:287-288. [PMID: 29057423 DOI: 10.2340/00015555-2822] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Affiliation(s)
- Alice Kieny
- Department of Dermatology, Faculty of Medicine, University Hospital, University of Strasbourg, Hôpital Civil, 1 Place de l'Hôpital, FR-67000 Strasbourg, France
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21
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Stoetzel C, Bär S, De Craene JO, Scheidecker S, Etard C, Chicher J, Reck JR, Perrault I, Geoffroy V, Chennen K, Strähle U, Hammann P, Friant S, Dollfus H. A mutation in VPS15 (PIK3R4) causes a ciliopathy and affects IFT20 release from the cis-Golgi. Nat Commun 2016; 7:13586. [PMID: 27882921 PMCID: PMC5123056 DOI: 10.1038/ncomms13586] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2015] [Accepted: 10/18/2016] [Indexed: 11/25/2022] Open
Abstract
Ciliopathies are a group of diseases that affect kidney and retina among other organs. Here, we identify a missense mutation in PIK3R4 (phosphoinositide 3-kinase regulatory subunit 4, named VPS15) in a family with a ciliopathy phenotype. Besides being required for trafficking and autophagy, we show that VPS15 regulates primary cilium length in human fibroblasts, as well as ciliary processes in zebrafish. Furthermore, we demonstrate its interaction with the golgin GM130 and its localization to the Golgi. The VPS15-R998Q patient mutation impairs Golgi trafficking functions in humanized yeast cells. Moreover, in VPS15-R998Q patient fibroblasts, the intraflagellar transport protein IFT20 is not localized to vesicles trafficking to the cilium but is restricted to the Golgi. Our findings suggest that at the Golgi, VPS15 and GM130 form a protein complex devoid of VPS34 to ensure the IFT20-dependent sorting and transport of membrane proteins from the cis-Golgi to the primary cilium. VPS15 is known as a VPS34-associated protein that functions in intracellular trafficking and autophagy. Here the authors identify a role for VPS15 in ciliopathy and ciliary phenotypes, and show that it interacts with GM130 and functions in IFT20-dependent cis-Golgi to cilium trafficking.
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Affiliation(s)
- Corinne Stoetzel
- Medical Genetics Laboratory, INSERM U1112, Institute of Medical Genetics of Alsace, University of Strasbourg, Strasbourg Medical School, 67000 Strasbourg, France
| | - Séverine Bär
- Department of Molecular and Cellular Genetics, UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, 67084 Strasbourg, France
| | - Johan-Owen De Craene
- Department of Molecular and Cellular Genetics, UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, 67084 Strasbourg, France
| | - Sophie Scheidecker
- Medical Genetics Laboratory, INSERM U1112, Institute of Medical Genetics of Alsace, University of Strasbourg, Strasbourg Medical School, 67000 Strasbourg, France
| | - Christelle Etard
- Institut für Toxikologie und Genetik, Campus Nord, Karlsruher Institut für Technologie, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein Leopoldshafen, Germany
| | - Johana Chicher
- Institut de Biologie Moléculaire et Cellulaire (IBMC), Plateforme Protéomique Strasbourg-Esplanade, CNRS FRC1589, 67084 Strasbourg, France
| | - Jennifer R Reck
- Department of Molecular and Cellular Genetics, UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, 67084 Strasbourg, France
| | - Isabelle Perrault
- Laboratory of Genetics in Ophthalmology, INSERM UMR1163, Institut Imagine, Université Paris Descartes Sorbonne Paris Cité, Hôpital Necker, 75015 Paris, France
| | - Véronique Geoffroy
- Medical Genetics Laboratory, INSERM U1112, Institute of Medical Genetics of Alsace, University of Strasbourg, Strasbourg Medical School, 67000 Strasbourg, France
| | - Kirsley Chennen
- Medical Genetics Laboratory, INSERM U1112, Institute of Medical Genetics of Alsace, University of Strasbourg, Strasbourg Medical School, 67000 Strasbourg, France
| | - Uwe Strähle
- Institut für Toxikologie und Genetik, Campus Nord, Karlsruher Institut für Technologie, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein Leopoldshafen, Germany
| | - Philippe Hammann
- Institut de Biologie Moléculaire et Cellulaire (IBMC), Plateforme Protéomique Strasbourg-Esplanade, CNRS FRC1589, 67084 Strasbourg, France
| | - Sylvie Friant
- Department of Molecular and Cellular Genetics, UMR7156, Centre National de Recherche Scientifique (CNRS), Université de Strasbourg, 67084 Strasbourg, France
| | - Hélène Dollfus
- Medical Genetics Laboratory, INSERM U1112, Institute of Medical Genetics of Alsace, University of Strasbourg, Strasbourg Medical School, 67000 Strasbourg, France.,Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, 67091 Strasbourg, France
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22
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Mary L, Scheidecker S, Kohler M, Lombardi MP, Delezoide AL, Auberger E, Triau S, Colin E, Gerard M, Grzeschik KH, Dollfus H, Antal MC. Prenatal diagnosis of focal dermal hypoplasia: Report of three fetuses and review of the literature. Am J Med Genet A 2016; 173:479-486. [PMID: 27623003 DOI: 10.1002/ajmg.a.37974] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [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: 01/11/2016] [Accepted: 08/29/2016] [Indexed: 11/09/2022]
Abstract
Focal dermal hypoplasia (FDH) is a rare syndrome characterized by pleiotropic features knowing to involve mostly skin and limbs. Although FDH has been described in children and adults, the cardinal signs of the fetal phenotype are not straightforward impacting the quality of the prenatal diagnosis. We describe in depth the ultrasound, radiological, macroscopical, and histological phenotype of three female fetuses with a severe form of FDH, propose a review of the literature and an attempt to delineate minimal and cardinal signs for FDH diagnosis. This report confirms the variability of FDH phenotype, highlights unreported FDH features, and allows delineating evocative clinical associations for prenatal diagnosis, namely intrauterine growth retardation, limbs malformations, anterior wall/diaphragm defects, and eye anomalies. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Laura Mary
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Cytogénétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Monique Kohler
- Service de Gynécologie et Obstétrique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Maria-Paola Lombardi
- Department of Clinical Genetics, Academisch Medisch Centrum, Amsterdam, The Netherlands
| | | | - Elisabeth Auberger
- Anatomie et Cytologie Pathologiques, Hôpital Simone Veil, Groupement Hospitalier Eaubonne-Montmorency, Montmorency, France
| | - Stéphane Triau
- Laboratoire de Pathologie Cellulaire et Tissulaire-Fœtopathologie, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Estelle Colin
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire d'Angers, Angers, France
| | - Marion Gerard
- Service de Génétique, Centre Hospitalier Universitaire de Caen, Caen, France
| | | | - Hélène Dollfus
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Faculté de Médecine de Strasbourg, Strasbourg, France
| | - Maria Cristina Antal
- Faculté de Médecine de Strasbourg, Strasbourg, France.,Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Fédération de Médecine Translationnelle, Strasbourg, France
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23
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Schaefer E, Stoetzel C, Scheidecker S, Geoffroy V, Prasad MK, Redin C, Missotte I, Lacombe D, Mandel JL, Muller J, Dollfus H. Identification of a novel mutation confirms the implication of IFT172 (BBS20) in Bardet-Biedl syndrome. J Hum Genet 2016; 61:447-50. [PMID: 26763875 DOI: 10.1038/jhg.2015.162] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Revised: 12/04/2015] [Accepted: 12/07/2015] [Indexed: 12/11/2022]
Abstract
Bardet-Biedl syndrome (BBS; MIM 209900) is a recessive heterogeneous ciliopathy characterized by retinitis pigmentosa (RP), postaxial polydactyly, obesity, hypogonadism, cognitive impairment and kidney dysfunction. So far, 20 BBS genes have been identified, with the last reported ones being found in one or very few families. Whole-exome sequencing was performed in a consanguineous family in which two affected children presented typical BBS features (retinitis pigmentosa, postaxial polydactyly, obesity, hypogonadism and cognitive impairment) without any mutation identified in known BBS genes at the time of the study. We identified a homozygous splice-site mutation (NM_015662.2: c.4428+3A>G) in both affected siblings in the last reported BBS gene, namely, Intraflagellar Transport 172 Homolog (IFT172). Familial mutation segregation was consistent with autosomal recessive inheritance. IFT172 mutations were initially reported in Jeune and Mainzer-Saldino syndromes. Recently, mutations have also been found in isolated RP and Bardet-Biedl-like ciliopathy. This is the second report of IFT172 mutations in BBS patients validating IFT172 as the twentieth BBS gene (BBS20). Moreover, another IFT gene, IFT27, was already associated with BBS, confirming the implication of IFT genes in the pathogenesis of BBS.
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Affiliation(s)
- Elise Schaefer
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Véronique Geoffroy
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Megana K Prasad
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
| | - Claire Redin
- Département de Médecine translationnelle et Neurogénétique, IGBMC, CNRS UMR 7104/INSERM U964/Université de Strasbourg, Illkirch, France
| | - Isabelle Missotte
- Service de Pédiatrie, Centre Hospitalier de Nouvelle-Calédonie, Hôpital de Magenta, Nouméa, New Caledonia New Caledonia
| | - Didier Lacombe
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Jean-Louis Mandel
- Département de Médecine translationnelle et Neurogénétique, IGBMC, CNRS UMR 7104/INSERM U964/Université de Strasbourg, Illkirch, France.,Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.,Chaire de Génétique Humaine, Collège de France, Illkirch, France
| | - Jean Muller
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.,Laboratoire de Diagnostic Génétique, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Hélène Dollfus
- Laboratoire de Génétique Médicale, Institut de Génétique Médicale d'Alsace, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France.,Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
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24
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Scheidecker S, Hull S, Perdomo Y, Studer F, Pelletier V, Muller J, Stoetzel C, Schaefer E, Defoort-Dhellemmes S, Drumare I, Holder GE, Hamel CP, Webster AR, Moore AT, Puech B, Dollfus HJ. Predominantly Cone-System Dysfunction as Rare Form of Retinal Degeneration in Patients With Molecularly Confirmed Bardet-Biedl Syndrome. Am J Ophthalmol 2015; 160:364-372.e1. [PMID: 25982971 DOI: 10.1016/j.ajo.2015.05.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2014] [Revised: 05/07/2015] [Accepted: 05/08/2015] [Indexed: 02/05/2023]
Abstract
PURPOSE To describe a series of patients with Bardet-Biedl syndrome (BBS) and predominantly retinal cone dysfunction, a previously only rarely reported association. DESIGN Retrospective observational case series. METHODS Seven patients with clinically proven Bardet-Biedl syndrome had undergone detailed ocular phenotyping, which included fundus examination, Goldmann visual fields, fundus autofluorescence imaging (FAF), optical coherence tomography (OCT), and electroretinography (ERG). Mutational screening in the BBS genes was performed either by direct Sanger sequencing or targeted next-generation sequencing. RESULTS All 7 patients had proven BBS mutations; 1 had a cone dystrophy phenotype on ERG and 6 had a cone-rod pattern of dysfunction. Macular atrophy was present in all patients, usually with central hypofluorescence surrounded by a continuous hyperfluorescent ring on fundus autofluorescence imaging. OCT confirmed loss of outer retinal structure within the atrophic areas. No clear genotype-phenotype relationship was evident. CONCLUSIONS Patients with Bardet-Biedl syndrome usually develop early-onset retinitis pigmentosa. In contrast, the patients described herein, with molecularly confirmed Bardet-Biedl syndrome, developed early cone dysfunction, including the first reported case of a cone dystrophy phenotype associated with the disorder. The findings significantly expand the phenotype associated with Bardet-Biedl syndrome.
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25
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Herenger Y, Stoetzel C, Schaefer E, Scheidecker S, Manière MC, Pelletier V, Alembik Y, Christmann D, Clavert JM, Terzic J, Fischbach M, De Saint Martin A, Dollfus H. Long term follow up of two independent patients with Schinzel-Giedion carrying SETBP1 mutations. Eur J Med Genet 2015; 58:479-87. [PMID: 26188272 DOI: 10.1016/j.ejmg.2015.07.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [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: 02/26/2015] [Revised: 06/26/2015] [Accepted: 07/13/2015] [Indexed: 10/23/2022]
Abstract
Schinzel-Giedion syndrome (SGS, MIM #269150) is a rare syndrome characterized by severe intellectual disability, typical facial gestalt, hypertrichosis and multiple congenital malformations including skeletal, genitourinary, renal and cardiac abnormalities. The prognosis of SGS is very severe and death occurs generally within a few years after birth. In 2002, we reported 2 children with SGS with a follow-up of 3 years. They presented a very similar and particular phenotype associating distinctive facial gestalt, severe developmental delay, megacalycosis, progressive neurodegeneration, alacrimi, corneal hypoesthesia and deafness. Furthermore, temporal bone imaging revealed a tuning-fork malformation of the stapes. In 2010, Hoischen et al. identified in SGS patients pathogenic heterozygous de novo mutations in SETBP1. We sequenced SETBP1 in our patients and found the previously reported c.2608G>A (p.Gly870Ser) mutation in both children. Since 2002, one of our patients died at 6 years old and the other patient is still alive at 15 years old. Such a life expectancy has never been reported so far. We describe herein the follow up of the 2 children during 6 and 15 years respectively. This article gives further evidence of the implication of SETBP1 as the major gene of SGS, and reports the previously unseen natural evolution of the disease in a 15 years old patient.
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Affiliation(s)
- Yvan Herenger
- Laboratoire de Génétique Médicale INSERM U1112, Institut de Génétique Médicale d'Alsace (IGMA), Faculté de Médecine de Strasbourg, Université De Strasbourg, Strasbourg, France; Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Corinne Stoetzel
- Laboratoire de Génétique Médicale INSERM U1112, Institut de Génétique Médicale d'Alsace (IGMA), Faculté de Médecine de Strasbourg, Université De Strasbourg, Strasbourg, France
| | - Elise Schaefer
- Laboratoire de Génétique Médicale INSERM U1112, Institut de Génétique Médicale d'Alsace (IGMA), Faculté de Médecine de Strasbourg, Université De Strasbourg, Strasbourg, France; Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Sophie Scheidecker
- Laboratoire de Génétique Médicale INSERM U1112, Institut de Génétique Médicale d'Alsace (IGMA), Faculté de Médecine de Strasbourg, Université De Strasbourg, Strasbourg, France; Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Marie-Cécile Manière
- Reference Centre for Orodental Manifestations of Rare Diseases, CRMR, Pôle de Médecine et Chirurgie Bucco-Dentaires, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Valérie Pelletier
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Yves Alembik
- Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Dominique Christmann
- Service de Radiologie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jean-Michel Clavert
- Service de Pédiatrie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Joelle Terzic
- Service de Pédiatrie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Michel Fischbach
- Service de Pédiatrie, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | | | - Hélène Dollfus
- Laboratoire de Génétique Médicale INSERM U1112, Institut de Génétique Médicale d'Alsace (IGMA), Faculté de Médecine de Strasbourg, Université De Strasbourg, Strasbourg, France; Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), Hôpitaux Universitaires de Strasbourg, Strasbourg, France; Service de Génétique Médicale, Hôpitaux Universitaires de Strasbourg, Strasbourg, France.
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Scheidecker S, Etard C, Haren L, Stoetzel C, Hull S, Arno G, Plagnol V, Drunat S, Passemard S, Toutain A, Obringer C, Koob M, Geoffroy V, Marion V, Strähle U, Ostergaard P, Verloes A, Merdes A, Moore A, Dollfus H. Mutations in TUBGCP4 alter microtubule organization via the γ-tubulin ring complex in autosomal-recessive microcephaly with chorioretinopathy. Am J Hum Genet 2015; 96:666-74. [PMID: 25817018 DOI: 10.1016/j.ajhg.2015.02.011] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Accepted: 02/19/2015] [Indexed: 12/27/2022] Open
Abstract
We have identified TUBGCP4 variants in individuals with autosomal-recessive microcephaly and chorioretinopathy. Whole-exome sequencing performed on one family with two affected siblings and independently on another family with one affected child revealed compound-heterozygous mutations in TUBGCP4. Subsequent Sanger sequencing was performed on a panel of individuals from 12 French families affected by microcephaly and ophthalmic manifestations, and one other individual was identified with compound-heterozygous mutations in TUBGCP4. One synonymous variant was common to all three families and was shown to induce exon skipping; the other mutations were frameshift mutations and a deletion. TUBGCP4 encodes γ-tubulin complex protein 4, a component belonging to the γ-tubulin ring complex (γ-TuRC) and known to regulate the nucleation and organization of microtubules. Functional analysis of individual fibroblasts disclosed reduced levels of the γ-TuRC, altered nucleation and organization of microtubules, abnormal nuclear shape, and aneuploidy. Moreover, zebrafish treated with morpholinos against tubgcp4 were found to have reduced head volume and eye developmental anomalies with chorioretinal dysplasia. In summary, the identification of TUBGCP4 mutations in individuals with microcephaly and a spectrum of anomalies in eye development, particularly photoreceptor anomalies, provides evidence of an important role for the γ-TuRC in brain and eye development.
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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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28
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Scheidecker S, Etard C, Pierce NW, Geoffroy V, Schaefer E, Muller J, Chennen K, Flori E, Pelletier V, Poch O, Marion V, Stoetzel C, Strähle U, Nachury MV, Dollfus H. Exome sequencing of Bardet-Biedl syndrome patient identifies a null mutation in the BBSome subunit BBIP1 (BBS18). J Med Genet 2013; 51:132-6. [PMID: 24026985 DOI: 10.1136/jmedgenet-2013-101785] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND Bardet-Biedl syndrome (BBS) is a recessive and genetically heterogeneous ciliopathy characterised by retinitis pigmentosa, obesity, kidney dysfunction, postaxial polydactyly, behavioural dysfunction and hypogonadism. 7 of the 17 BBS gene products identified to date assemble together with the protein BBIP1/BBIP10 into the BBSome, a protein complex that ferries signalling receptors to and from cilia. METHODS AND RESULTS Exome sequencing performed on a sporadic BBS case revealed for the first time a homozygous stop mutation (NM_001195306: c.173T>G, p.Leu58*) in the BBIP1 gene. This mutation is pathogenic since no BBIP1 protein could be detected in fibroblasts from the patient, and BBIP1[Leu58*] is unable to associate with the BBSome subunit BBS4. CONCLUSIONS These findings identify BBIP1 as the 18th BBS gene (BBS18) and suggest that BBSome assembly may represent a unifying pathomechanism for BBS.
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Affiliation(s)
- Sophie Scheidecker
- Laboratoire de Génétique Médicale, INSERM U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), Université de Strasbourg, Strasbourg, France
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Scheidecker S, Vodoff-Oehler MV, Issa-Brunet L, Peralta MF. [Mental retardation revealing mucopolysaccharidosis type I in a child treated for cystic fibrosis: a case report]. Arch Pediatr 2011; 18:1324-6. [PMID: 22030348 DOI: 10.1016/j.arcped.2011.09.026] [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] [Received: 12/09/2010] [Revised: 02/26/2011] [Accepted: 09/20/2011] [Indexed: 11/16/2022]
Abstract
Mucopolysaccharidosis I (MPS I) is a lysosomal storage disease due to an α-L-iduronidase deficiency, which leads to an accumulation of glycosaminoglycans in the lysosomes of most cells, resulting in tissue and organ dysfunction. MPS I is inherited in an autosomal-recessive manner. This disorder has a chronic, progressive course and is characterized by mental retardation, dysmorphy, organomegaly, multisystem involvement, and multiple dysostosis. Early disease recognition is important for a prompt start of specific treatment, which improves many aspects of MPS I, and for the patient's overall management.
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Affiliation(s)
- S Scheidecker
- Service de pédiatrie, hôpital du Hasenrain, Mulhouse, France
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30
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Scheidecker S, Köckritz A, Schnell M. α-substituierte Phosphonate. 56. Synthese und Reaktionen von 1-Formylamino-2,2,2-trichlorethanphosphonaten. ACTA ACUST UNITED AC 1990. [DOI: 10.1002/prac.19903320614] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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