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Cario M, Scalia J, Mahfouf W, Muzotte E, Michaud V, Plaisant C, Dupuy JW, Douki T, Morice-Picard F, Rambert J, Perrier E, Trompezinski S, Rezvani HR. Proteome characterization of XPC-deficient melanocytes generated by CRISPR-Cas9 technology reveals alteration in the expression of several hundred proteins. J Dermatol Sci 2024:S0923-1811(24)00052-5. [PMID: 38556435 DOI: 10.1016/j.jdermsci.2024.03.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2023] [Revised: 01/23/2024] [Accepted: 03/21/2024] [Indexed: 04/02/2024]
Affiliation(s)
- Muriel Cario
- Univ. Bordeaux, Inserm, BRIC, Bordeaux, France; Aquiderm, University of Bordeaux, Bordeaux, France
| | - Julie Scalia
- NAOS Institute of Life Science, Aix-en-Provence, France
| | | | | | | | | | | | - Thierry Douki
- Nucleic Acids Lesions Laboratory, SCIB/INAC, CEA, Universite´ Joseph Fourier- Grenoble, Grenoble, France
| | - Fanny Morice-Picard
- Univ. Bordeaux, Inserm, BRIC, Bordeaux, France; Paediatric Dermatology Department, Bordeaux University Hospital, Bordeaux, France
| | - Jérôme Rambert
- Univ. Bordeaux, Inserm, BRIC, Bordeaux, France; Aquiderm, University of Bordeaux, Bordeaux, France
| | - Eric Perrier
- NAOS Institute of Life Science, Aix-en-Provence, France
| | | | - Hamid-Reza Rezvani
- Univ. Bordeaux, Inserm, BRIC, Bordeaux, France; Aquiderm, University of Bordeaux, Bordeaux, France.
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2
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Sergouniotis PI, Michaud V, Lasseaux E, Campbell C, Plaisant C, Javerzat S, Birney E, Ramsden SC, Black GC, Arveiler B. A multilayered approach to the analysis of genetic data from individuals with suspected albinism. J Med Genet 2023; 60:1245-1249. [PMID: 37460203 DOI: 10.1136/jmg-2022-109088] [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: 12/01/2022] [Accepted: 05/12/2023] [Indexed: 11/29/2023]
Abstract
Albinism is a clinically and genetically heterogeneous group of conditions characterised by visual abnormalities and variable degrees of hypopigmentation. Multiple studies have demonstrated the clinical utility of genetic investigations in individuals with suspected albinism. Despite this, the variation in the provision of genetic testing for albinism remains significant. One key issue is the lack of a standardised approach to the analysis of genomic data from affected individuals. For example, there is variation in how different clinical genetic laboratories approach genotypes that involve incompletely penetrant alleles, including the common, 'hypomorphic' TYR c.1205G>A (p.Arg402Gln) [rs1126809] variant. Here, we discuss the value of genetic testing as a frontline diagnostic tool in individuals with features of albinism and propose a practice pattern for the analysis of genomic data from affected families.
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Affiliation(s)
- Panagiotis I Sergouniotis
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL- EBI), Wellcome Genome Campus, Cambridge, UK
- Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
- Manchester Royal Eye Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Vincent Michaud
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
- INSERM U1211, Rare Diseases, Genetics and Metabolism, University of Bordeaux, Bordeaux, France
| | - Eulalie Lasseaux
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Christopher Campbell
- Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Claudio Plaisant
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Sophie Javerzat
- INSERM U1211, Rare Diseases, Genetics and Metabolism, University of Bordeaux, Bordeaux, France
| | - Ewan Birney
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL- EBI), Wellcome Genome Campus, Cambridge, UK
| | - Simon C Ramsden
- Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Graeme C Black
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
- Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK
| | - Benoit Arveiler
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
- INSERM U1211, Rare Diseases, Genetics and Metabolism, University of Bordeaux, Bordeaux, France
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3
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Michaud V, Sequeira A, Mercier E, Lasseaux E, Plaisant C, Hadj-Rabia S, Whalen S, Bonneau D, Dieux-Coeslier A, Morice-Picard F, Coursimault J, Arveiler B, Javerzat S. Unsuspected consequences of synonymous and missense variants in OCA2 can be detected in blood cell RNA samples of patients with albinism. Pigment Cell Melanoma Res 2023. [PMID: 37650133 DOI: 10.1111/pcmr.13123] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Accepted: 08/18/2023] [Indexed: 09/01/2023]
Abstract
Oculocutaneous albinism type 2 (OCA2) is the second most frequent form of albinism and represents about 30% of OCA worldwide. As with all types of OCA, patients present with hypopigmentation of hair and skin, as well as severe visual abnormalities. We focused on a subgroup of 29 patients for whom genetic diagnosis was pending because at least one of their identified variants in or around exon 10 of OCA2 is of uncertain significance (VUS). By minigene assay, we investigated the effect of these VUS on exon 10 skipping and showed that not only intronic but also some synonymous variants can result in enhanced exon skipping. We further found that excessive skipping of exon 10 could be detected directly on blood samples of patients and of their one parent with the causal variant, avoiding invasive skin biopsies. Moreover, we show that variants, which result in lack of detectable OCA2 mRNA can be identified from blood samples as well, as shown for the most common OCA2 pathogenic missense variant c.1327G>A/p.(Val443Ile). In conclusion, blood cell RNA analysis allows testing the potential effect of any OCA2 VUS on transcription products. This should help to elucidate yet unsolved OCA2 patients and improve genetic counseling.
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Affiliation(s)
- Vincent Michaud
- Rare Diseases Genetics and Metabolism, INSERM U1211, SBM Department, University of Bordeaux, Bordeaux, France
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Angèle Sequeira
- Rare Diseases Genetics and Metabolism, INSERM U1211, SBM Department, University of Bordeaux, Bordeaux, France
| | - Elina Mercier
- Rare Diseases Genetics and Metabolism, INSERM U1211, SBM Department, University of Bordeaux, Bordeaux, France
| | - Eulalie Lasseaux
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Claudio Plaisant
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Smail Hadj-Rabia
- Department of Dermatology, Reference Center for Genodermatoses and Rare Skin Diseases (MAGEC), INSERM U1163, University of Paris, Imagine Institute, AP-HP5, Necker-Enfants Malades Hospital, Paris, France
| | - Sandra Whalen
- Clinical Genetics, Centre de Référence Maladies Rares Anomalies du développement et syndromes malformatifs, APHP, Sorbonne University, Hospital Armand Trousseau, Paris, France
| | | | - Anne Dieux-Coeslier
- Clinical Genetics Department, Reference Center for Developmental Anomalies, CHU Lille, Lille, France
| | - Fanny Morice-Picard
- Pediatric Dermatology Unit, National Center for Rare Skin Disorders, University Hospital of Bordeaux, Bordeaux, France
| | - Juliette Coursimault
- Department of Genetics and Reference Center for Developmental Disorders, Normandie Univ, UNIROUEN, CHU Rouen, Inserm U1245, Rouen, France
| | - Benoît Arveiler
- Rare Diseases Genetics and Metabolism, INSERM U1211, SBM Department, University of Bordeaux, Bordeaux, France
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Sophie Javerzat
- Rare Diseases Genetics and Metabolism, INSERM U1211, SBM Department, University of Bordeaux, Bordeaux, France
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4
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Michaud V, Lasseaux E, Green DJ, Gerrard DT, Plaisant C, Fitzgerald T, Birney E, Arveiler B, Black GC, Sergouniotis PI. The contribution of common regulatory and protein-coding TYR variants to the genetic architecture of albinism. Nat Commun 2022; 13:3939. [PMID: 35803923 PMCID: PMC9270319 DOI: 10.1038/s41467-022-31392-3] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 06/15/2022] [Indexed: 12/13/2022] Open
Abstract
Genetic diseases have been historically segregated into rare Mendelian disorders and common complex conditions. Large-scale studies using genome sequencing are eroding this distinction and are gradually unmasking the underlying complexity of human traits. Here, we analysed data from the Genomics England 100,000 Genomes Project and from a cohort of 1313 individuals with albinism aiming to gain insights into the genetic architecture of this archetypal rare disorder. We investigated the contribution of protein-coding and regulatory variants both rare and common. We focused on TYR, the gene encoding tyrosinase, and found that a high-frequency promoter variant, TYR c.-301C>T [rs4547091], modulates the penetrance of a prevalent, albinism-associated missense change, TYR c.1205G>A (p.Arg402Gln) [rs1126809]. We also found that homozygosity for a haplotype formed by three common, functionally-relevant variants, TYR c.[-301C;575C>A;1205G>A], is associated with a high probability of receiving an albinism diagnosis (OR>82). This genotype is also associated with reduced visual acuity and with increased central retinal thickness in UK Biobank participants. Finally, we report how the combined analysis of rare and common variants can increase diagnostic yield and can help inform genetic counselling in families with albinism.
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Affiliation(s)
- Vincent Michaud
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
- INSERM U1211, Rare Diseases, Genetics and Metabolism, University of Bordeaux, Bordeaux, France
| | - Eulalie Lasseaux
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - David J Green
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Dave T Gerrard
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK
| | - Claudio Plaisant
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France
| | - Tomas Fitzgerald
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL- EBI), Wellcome Genome Campus, Cambridge, UK
| | - Ewan Birney
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL- EBI), Wellcome Genome Campus, Cambridge, UK
| | - Benoît Arveiler
- Department of Medical Genetics, University Hospital of Bordeaux, Bordeaux, France.
- INSERM U1211, Rare Diseases, Genetics and Metabolism, University of Bordeaux, Bordeaux, France.
| | - Graeme C Black
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
- Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK.
| | - Panagiotis I Sergouniotis
- Division of Evolution, Infection and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester, UK.
- European Molecular Biology Laboratory, European Bioinformatics Institute (EMBL- EBI), Wellcome Genome Campus, Cambridge, UK.
- Manchester Centre for Genomic Medicine, Saint Mary's Hospital, Manchester University NHS Foundation Trust, Manchester, UK.
- Manchester Royal Eye Hospital, Manchester University NHS Foundation Trust, Manchester, UK.
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5
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Pennamen P, Tingaud-Sequeira A, Gazova I, Keighren M, McKie L, Marlin S, Gherbi Halem S, Kaplan J, Delevoye C, Lacombe D, Plaisant C, Michaud V, Lasseaux E, Javerzat S, Jackson I, Arveiler B. Dopachrome tautomerase variants in patients with oculocutaneous albinism. Genet Med 2021; 23:479-487. [PMID: 33100333 DOI: 10.1038/s41436-020-00997-8] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [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: 06/26/2020] [Revised: 09/24/2020] [Accepted: 09/24/2020] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Albinism is a clinically and genetically heterogeneous condition. Despite analysis of the 20 known genes, ~30% patients remain unsolved. We aimed to identify new genes involved in albinism. METHODS We sequenced a panel of genes with known or predicted involvement in melanogenesis in 230 unsolved albinism patients. RESULTS We identified variants in the Dopachrome tautomerase (DCT) gene in two patients. One was compound heterozygous for a 14-bp deletion in exon 9 and c.118T>A p.(Cys40Ser). The second was homozygous for c.183C>G p.(Cys61Trp). Both patients had mild hair and skin hypopigmentation, and classical ocular features. CRISPR-Cas9 was used in C57BL/6J mice to create mutations identical to the missense variants carried by the patients, along with one loss-of-function indel. When bred to homozygosity the three mutations revealed hypopigmentation of the coat, milder for Cys40Ser compared with Cys61Trp or the frameshift mutation. Histological analysis identified significant hypopigmentation of the retinal pigmented epithelium (RPE) indicating that defective RPE melanogenesis could be associated with eye and vision defects. DCT loss of function in zebrafish embryos elicited hypopigmentation both in melanophores and RPE cells. CONCLUSION DCT is the gene for a new type of oculocutaneous albinism that we propose to name OCA8.
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Affiliation(s)
- Perrine Pennamen
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Angèle Tingaud-Sequeira
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Iveta Gazova
- MRC Human Genetics Unit, University of Edinburgh, Edinburgh, UK
| | | | - Lisa McKie
- MRC Human Genetics Unit, University of Edinburgh, Edinburgh, UK
| | - Sandrine Marlin
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, Paris Descartes, Sorbonne Paris Cité University, Paris, France
| | - Souad Gherbi Halem
- Laboratory of Embryology and Genetics of Human Malformation, Imagine Institute, Paris Descartes, Sorbonne Paris Cité University, Paris, France
| | - Josseline Kaplan
- Laboratory of Genetics in Ophthalmology, Imagine Institute, Paris Descartes, Sorbonne Paris Cité University, Paris, France
| | - Cédric Delevoye
- Institut Curie, PSL Research University, CNRS, UMR144, Structure and Membrane Compartments, Paris, France
| | - Didier Lacombe
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Claudio Plaisant
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Vincent Michaud
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Eulalie Lasseaux
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Sophie Javerzat
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Ian Jackson
- MRC Human Genetics Unit, University of Edinburgh, Edinburgh, UK
- Roslin Institute, University of Edinburgh, Edinburgh, UK
| | - Benoit Arveiler
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France.
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France.
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6
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Tingaud-Sequeira A, Trimouille A, Salaria M, Stapleton R, Claverol S, Plaisant C, Bonneu M, Lopez E, Arveiler B, Lacombe D, Rooryck C. A recurrent missense variant in EYA3 gene is associated with oculo-auriculo-vertebral spectrum. Hum Genet 2021; 140:933-944. [PMID: 33475861 DOI: 10.1007/s00439-021-02255-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 01/06/2021] [Indexed: 12/18/2022]
Abstract
Goldenhar syndrome or oculo-auriculo-vertebral spectrum (OAVS) is a complex developmental disorder characterized by asymmetric ear anomalies, hemifacial microsomia, ocular and vertebral defects. We aimed at identifying and characterizing a new gene associated with OAVS. Two affected brothers with OAVS were analyzed by exome sequencing that revealed a missense variant (p.(Asn358Ser)) in the EYA3 gene. EYA3 screening was then performed in 122 OAVS patients that identified the same variant in one individual from an unrelated family. Segregation assessment in both families showed incomplete penetrance and variable expressivity. We investigated this variant in cellular models to determine its pathogenicity and demonstrated an increased half-life of the mutated protein without impact on its ability to dephosphorylate H2AFX following DNA repair pathway induction. Proteomics performed on this cellular model revealed four significantly predicted upstream regulators which are PPARGC1B, YAP1, NFE2L2 and MYC. Moreover, eya3 knocked-down zebrafish embryos developed specific craniofacial abnormalities corroborating previous animal models and supporting its involvement in the OAVS. Additionally, EYA3 gene expression was deregulated in vitro by retinoic acid exposure. EYA3 is the second recurrent gene identified to be associated with OAVS. Moreover, based on protein interactions and related diseases, we suggest the DNA repair as a key molecular pathway involved in craniofacial development.
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Affiliation(s)
- Angèle Tingaud-Sequeira
- Maladies Rares: Génétique et Métabolisme (MRGM), U 1211 INSERM, Univ. Bordeaux, 33000, Bordeaux, France
| | - Aurélien Trimouille
- Maladies Rares: Génétique et Métabolisme (MRGM), U 1211 INSERM, Univ. Bordeaux, 33000, Bordeaux, France.,CHU de Bordeaux, Service de Génétique Médicale, Centre de Référence Anomalies du Développement et Syndromes Malformatifs, CHU Pellegrin-Ecole des Sages-femmes, Place Amélie Raba-Léon, 33076, Bordeaux Cedex, France
| | - Manju Salaria
- Genetic Health Service, Monash Health, 246 Clayton Road, Clayton, VIC, 3168, Australia.,Wyndham Specialist Care Centre, 289 Princes Highway, Werribee, VIC, 3030, Australia
| | - Rachel Stapleton
- Genetic Health Service NZ-South Island Hub, Christchurch Hospital, Christchurch, 8140, New Zealand
| | - Stéphane Claverol
- Plateforme Protéome, Centre Génomique Fonctionnelle Bordeaux, Bordeaux, France
| | - Claudio Plaisant
- CHU de Bordeaux, Service de Génétique Médicale, Centre de Référence Anomalies du Développement et Syndromes Malformatifs, CHU Pellegrin-Ecole des Sages-femmes, Place Amélie Raba-Léon, 33076, Bordeaux Cedex, France
| | - Marc Bonneu
- Plateforme Protéome, Centre Génomique Fonctionnelle Bordeaux, Bordeaux, France
| | - Estelle Lopez
- Maladies Rares: Génétique et Métabolisme (MRGM), U 1211 INSERM, Univ. Bordeaux, 33000, Bordeaux, France
| | - Benoit Arveiler
- Maladies Rares: Génétique et Métabolisme (MRGM), U 1211 INSERM, Univ. Bordeaux, 33000, Bordeaux, France.,CHU de Bordeaux, Service de Génétique Médicale, Centre de Référence Anomalies du Développement et Syndromes Malformatifs, CHU Pellegrin-Ecole des Sages-femmes, Place Amélie Raba-Léon, 33076, Bordeaux Cedex, France
| | - Didier Lacombe
- Maladies Rares: Génétique et Métabolisme (MRGM), U 1211 INSERM, Univ. Bordeaux, 33000, Bordeaux, France.,CHU de Bordeaux, Service de Génétique Médicale, Centre de Référence Anomalies du Développement et Syndromes Malformatifs, CHU Pellegrin-Ecole des Sages-femmes, Place Amélie Raba-Léon, 33076, Bordeaux Cedex, France
| | - Caroline Rooryck
- Maladies Rares: Génétique et Métabolisme (MRGM), U 1211 INSERM, Univ. Bordeaux, 33000, Bordeaux, France. .,CHU de Bordeaux, Service de Génétique Médicale, Centre de Référence Anomalies du Développement et Syndromes Malformatifs, CHU Pellegrin-Ecole des Sages-femmes, Place Amélie Raba-Léon, 33076, Bordeaux Cedex, France.
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7
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Pennamen P, Tingaud‐Sequeira A, Michaud V, Morice‐Picard F, Plaisant C, Vincent‐Delorme C, Giuliano F, Azarnoush S, Capri Y, Marçon C, Lacombe D, Lasseaux E, Arveiler B. Novel variants in the
BLOC1S3
gene in patients presenting a mild form of Hermansky–Pudlak syndrome. Pigment Cell Melanoma Res 2020; 34:132-135. [DOI: 10.1111/pcmr.12915] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2020] [Revised: 07/09/2020] [Accepted: 07/15/2020] [Indexed: 11/28/2022]
Affiliation(s)
- Perrine Pennamen
- Maladies Rares: Génétique et Métabolisme (MRGM) Univ. BordeauxINSERM U1211 Bordeaux France
- Department of Medical Genetics CHU Bordeaux Bordeaux France
| | | | - Vincent Michaud
- Maladies Rares: Génétique et Métabolisme (MRGM) Univ. BordeauxINSERM U1211 Bordeaux France
- Department of Medical Genetics CHU Bordeaux Bordeaux France
| | - Fanny Morice‐Picard
- Immuno‐Dermatology ATIP‐AVENIR BMGICUniv. Bordeaux, INSERM 1035 Bordeaux France
- Pediatric Dermatology Unit National Reference Center for Rare Skin DisordersCHU Bordeaux Bordeaux France
| | | | | | - Fabienne Giuliano
- Unit of Medical Genetics L'Archet 2 HospitalUniversity Hospital of Nice Nice France
| | - Saba Azarnoush
- Clinical Department of Immuno‐Hematology CHU Robert DebréParis University Paris France
| | - Yline Capri
- Service de génétique médicale AP‐HP Robert‐Debré Paris France
| | - Carolina Marçon
- Setor de Dermatologia Santa Casa de Misericordia Sao Paolo Brazil
| | - Didier Lacombe
- Maladies Rares: Génétique et Métabolisme (MRGM) Univ. BordeauxINSERM U1211 Bordeaux France
- Department of Medical Genetics CHU Bordeaux Bordeaux France
| | | | - Benoît Arveiler
- Maladies Rares: Génétique et Métabolisme (MRGM) Univ. BordeauxINSERM U1211 Bordeaux France
- Department of Medical Genetics CHU Bordeaux Bordeaux France
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8
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Pennamen P, Le L, Tingaud-Sequeira A, Fiore M, Bauters A, Van Duong Béatrice N, Coste V, Bordet JC, Plaisant C, Diallo M, Michaud V, Trimouille A, Lacombe D, Lasseaux E, Delevoye C, Picard FM, Delobel B, Marks MS, Arveiler B. BLOC1S5 pathogenic variants cause a new type of Hermansky-Pudlak syndrome. Genet Med 2020; 22:1613-1622. [PMID: 32565547 DOI: 10.1038/s41436-020-0867-5] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [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: 05/04/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/09/2022] Open
Abstract
PURPOSE Hermansky-Pudlak syndrome (HPS) is characterized by oculocutaneous albinism, excessive bleeding, and often additional symptoms. Variants in ten different genes have been involved in HPS. However, some patients lack variants in these genes. We aimed to identify new genes involved in nonsyndromic or syndromic forms of albinism. METHODS Two hundred thirty albinism patients lacking a molecular diagnosis of albinism were screened for pathogenic variants in candidate genes with known links to pigmentation or HPS pathophysiology. RESULTS We identified two unrelated patients with distinct homozygous variants of the BLOC1S5 gene. Patients had mild oculocutaneous albinism, moderate bleeding diathesis, platelet aggregation deficit, and a dramatically decreased number of platelet dense granules, all signs compatible with HPS. Functional tests performed on platelets of one patient displayed an absence of the obligate multisubunit complex BLOC-1, showing that the variant disrupts BLOC1S5 function and impairs BLOC-1 assembly. Expression of the patient-derived BLOC1S5 deletion in nonpigmented murine Bloc1s5-/- melan-mu melanocytes failed to rescue pigmentation, the assembly of a functional BLOC-1 complex, and melanosome cargo trafficking, unlike the wild-type allele. CONCLUSION Mutation of BLOC1S5 is disease-causing, and we propose that BLOC1S5 is the gene for a new form of Hermansky-Pudlak syndrome, HPS-11.
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Affiliation(s)
- Perrine Pennamen
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France.,Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Linh Le
- Dept. of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia Research Institute, Philadelphia, PA, USA.,Department of Pathology, Laboratory Medicine and Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA.,Cell and Molecular Biology Graduate Group, University of Pennsylvania, Philadelphia, PA, USA
| | - Angèle Tingaud-Sequeira
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Mathieu Fiore
- Laboratoire d'Hématologie, CHU de Bordeaux, Bordeaux, France.,Reference Center for Platelet Disorders, CHU de Bordeaux, Pessac, France
| | - Anne Bauters
- Hémostase et Transfusion CHU Lille, Lille, France
| | | | | | | | - Claudio Plaisant
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Modibo Diallo
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France
| | - Vincent Michaud
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Aurélien Trimouille
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France.,Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Didier Lacombe
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France.,Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Eulalie Lasseaux
- Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France
| | - Cédric Delevoye
- Institut Curie, PSL Research University, CNRS, UMR144, Structure and Membrane Compartments, Paris, France.,Institut Curie, PSL Research University, CNRS, UMR144, Cell and Tissue Imaging Facility (PICT-IBiSA), Paris, France
| | | | - Bruno Delobel
- Centre de Génétique Chromosomique, GHICL, Hôpital Saint Vincent de Paul, Lille, France
| | - Michael S Marks
- Dept. of Pathology and Laboratory Medicine, Children's Hospital of Philadelphia Research Institute, Philadelphia, PA, USA.,Department of Pathology, Laboratory Medicine and Department of Physiology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA, USA
| | - Benoit Arveiler
- Rare Diseases, Genetics and Metabolism, INSERM U1211, University of Bordeaux, Bordeaux, France. .,Molecular Genetics Laboratory, Bordeaux University Hospital, Bordeaux, France.
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9
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de Sainte Agathe JM, Van-Gils J, Lasseaux E, Arveiler B, Lacombe D, Pfirrmann C, Raclet V, Gaston L, Plaisant C, Aupy J, Trimouille A. Confirmation and Expansion of the Phenotype Associated with the Recurrent p.Val837Met Variant in TRPM3. Eur J Med Genet 2020; 63:103942. [PMID: 32439617 DOI: 10.1016/j.ejmg.2020.103942] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [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: 12/18/2019] [Revised: 03/12/2020] [Accepted: 05/02/2020] [Indexed: 11/29/2022]
Abstract
Dyment et al. (2019) recently reported eight novel patients with intellectual disability and epilepsy associated with heterozygous de novo missense variants in TRPM3. We report a novel patient with the same recurrent de novo missense of TRPM3 found in seven of these eight cases, p.(Val837Met), providing an emphasis towards ocular and joints defects along with a non-mandatory epilepsy.
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Affiliation(s)
| | - Julien Van-Gils
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Eulalie Lasseaux
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Benoît Arveiler
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France; Université de Bordeaux, INSERM U1211, Laboratoire Maladies Rares: Génétique et Métabolisme, Bordeaux, France
| | - Didier Lacombe
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France; Université de Bordeaux, INSERM U1211, Laboratoire Maladies Rares: Génétique et Métabolisme, Bordeaux, France
| | | | - Virginie Raclet
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Laetitia Gaston
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Claudio Plaisant
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Jérôme Aupy
- Service d'Explorations fonctionnelles du système nerveux, CHU de Bordeaux, Bordeaux, France
| | - Aurélien Trimouille
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France; Université de Bordeaux, INSERM U1211, Laboratoire Maladies Rares: Génétique et Métabolisme, Bordeaux, France
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10
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Trimouille A, Marguet F, Sauvestre F, Lasseaux E, Pelluard F, Martin-Négrier ML, Plaisant C, Rooryck C, Lacombe D, Arveiler B, Boespflug-Tanguy O, Naudion S, Laquerrière A. Foetal onset of EIF2B related disorder in two siblings: cerebellar hypoplasia with absent Bergmann glia and severe hypomyelination. Acta Neuropathol Commun 2020; 8:48. [PMID: 32293553 PMCID: PMC7161274 DOI: 10.1186/s40478-020-00929-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 02/24/2020] [Accepted: 04/03/2020] [Indexed: 11/20/2022] Open
Abstract
Bi-allelic pathogenic variants in genes of the EIF2B family are responsible for Childhood Ataxia with Central nervous system Hypomyelination/Vanishing White Matter disease, a progressive neurodegenerative disorder of the central white matter. Only seven molecularly proven cases with antenatal onset have been reported so far. We report for the first time the neuropathological findings obtained from two foetuses harbouring deleterious variants in the EIF2B5 gene who presented in utero growth retardation and microcephaly with simplified gyral pattern that led to a medical termination of the pregnancy at 27 and 32 weeks of gestation. Neuropathological examination confirmed microcephaly with delayed gyration, periventricular pseudo-cysts and severe cerebellar hypoplasia. Histologically, the cerebellar cortex was immature, the dentate nuclei were fragmented and myelin stains revealed almost no myelination of the infratentorial structures. Bergmann glia was virtually absent associated to a drastic decreased number of mature astrocytes in the cerebellar white matter, multiple nestin-positive immature astrocytes as well as increased numbers of PDGRFα-positive oligodendrocyte precursors. Whole exome sequencing performed in the two foetuses and their parents allowed the identification of two EIF2B5 compound heterozygous variants in the two foetuses: c.468C > G p.Ile156Met and c.1165G > A p.Val389Met, the parents being heterozygous carriers. These variants are absent in the genome Aggregation Database (gnomAD r2.0.2). Contrary to the variant Ile156Met already described in a patient with CACH syndrome, the variant p.Val389Met is novel and predicted to be deleterious using several softwares. Neuropathological findings further expand the phenotypic spectrum of the disease that very likely occurs during early gestation and may manifest from the second half of pregnancy by a severe impairment of cerebral and cerebellar development.
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11
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Matis T, Michaud V, Van-Gils J, Raclet V, Plaisant C, Fergelot P, Lasseaux E, Arveiler B, Trimouille A. Triple diagnosis of Wiedemann-Steiner, Waardenburg and DLG3-related intellectual disability association found by WES: A case report. J Gene Med 2020; 22:e3197. [PMID: 32246869 DOI: 10.1002/jgm.3197] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [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: 10/08/2019] [Revised: 02/19/2020] [Accepted: 03/21/2020] [Indexed: 01/16/2023] Open
Abstract
BACKGROUND The development of whole-exome sequencing (WES) and whole-genome sequencing (WGS) for clinical purposes now allows the identification of multiple pathogenic variants in patients with a rare disease. This occurs even when a single causative gene was initially suspected. We report the case of an 8-year-old patient with global developmental delays and dysmorphic features, with a possibly pathogenic variant in three distinct genes. METHODS Trio-based exome sequencing was performed by IntegraGen SA (Evry, France), on an Illumina HiSeq4000 (Illumina, San Diego, CA, USA). Sanger sequencing was performed to confirm the variants that were found. RESULTS WES showed the presence of three possibly deleterious variants: KMT2A: c.9068delA;p.Gln3023Argfs*3 de novo, PAX3: c.530C>G;p.Ala177Gly de novo and DLG3: c.127delG;p.Asp43Metfs*22 hemizygous inherited from the mother. KMT2A pathogenic variants are involved in Wiedemann-Steiner syndrome, and PAX3 is the gene responsible for Waardenburg syndrome. DLG3 variants have been described in a non-syndromic X-related intellectual disability. CONCLUSIONS Considering the dysmorphic features and intellectual disability presented by this patient, these three variants were imputed as pathogenic and their association was considered responsible for his phenotype. Dual molecular diagnoses have already been found by WES in several cohorts with an average of diagnostic yield of 7%. This case demonstrates and reminds us of the importance of analyzing exomes rigorously and exhaustively because, in some cases (< 10%), it can explain superimposed traits or blended phenotypes.
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Affiliation(s)
- Thibaut Matis
- Service de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - Vincent Michaud
- Service de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - Julien Van-Gils
- Service de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - Virginie Raclet
- Service de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | | | | | | | - Benoit Arveiler
- Service de Génétique Médicale, CHU Bordeaux, Bordeaux, France
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12
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Michaud V, Fiore M, Coste V, Huguenin Y, Bordet JC, Plaisant C, Lasseaux E, Morice-Picard F, Arveiler B. A new case with Hermansky-Pudlak syndrome type 9, a rare cause of syndromic albinism with severe defect of platelets dense bodies. Platelets 2020; 32:420-423. [PMID: 32245340 DOI: 10.1080/09537104.2020.1742315] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Hermansky-Pudlak syndrome (HPS) is a rare form of syndromic oculocutaneous albinism caused by disorders in lysosome-related organelles. Ten genes are associated with different forms of HPS. HPS type 9 (HPS-9) is caused by biallelic variants of BLOC1S6. To date, only three patients with HPS-9 have been reported. We described one patient presenting with ocular features of albinism. Genetic analysis revealed two compound heterozygous variants in the BLOC1S6 gene. Extended hematological studies confirmed the platelet storage pool disease with absence of dense granules and abnormal platelet aggregation. By reviewing the previous published cases we confirm the phenotype of HPS-9 patients. This patient is the only one described with dextrocardia and abnormal psychomotor development.
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Affiliation(s)
| | - Mathieu Fiore
- Service d'Hématologie Biologique, Centre de Référence des Pathologies Plaquettaires, CHU Bordeaux, Bordeaux, France
| | | | - Yoann Huguenin
- Centre de Ressources et de Compétences des Maladies Hémorragiques Constitutionnelles, CHU Bordeaux, Bordeaux, France
| | | | | | | | | | - Benoit Arveiler
- Service Génétique Médicale, CHU Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
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13
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Michaud V, Defoort-Dhellemmes S, Drumare I, Pennamen P, Plaisant C, Lasseaux E, Arveiler B. Clinical and molecular findings of FRMD7 related congenital nystagmus as adifferential diagnosis of ocular albinism. Ophthalmic Genet 2019; 40:161-164. [PMID: 30942644 DOI: 10.1080/13816810.2019.1592201] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND Congenital nystagmus is one of the most common neuro-ophthalmological disorders. X chromosome-linked forms are associated with pathogenic variants of the GPR143 and FRMD7 genes. MATERIALS AND METHODS Patients' DNA was analyzed using a next-generation sequencing (NGS) panel of genes involved in albinism and related pathologies (TYR, OCA2, TYRP1, SLC45A2, SLC24A5, C10ORF11, GPR143, SLC38A8, HPS 1 to 10, LYST, MITF, FRMD7) Results: We report a 4 generation family with 5 affected members initially referred for molecular diagnosis of ocular albinism. A missense variant of FRMD7 was found in 3 affected cases and one female carrier. We show that the disease in the affected girl is due to skewed inactivation of the X chromosome. CONCLUSIONS By compiling all the published cases we discuss the variable penetrance among females due to different types of mutation and to X-inactivation.
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Affiliation(s)
- Vincent Michaud
- a Service de Génétique Médicale , CHU de Bordeaux , Bordeaux , France
| | | | - Isabelle Drumare
- b Service d'exploration de la vision et neuro-ophtalmologie , CHRU de Lille , Lille , France
| | - Perrine Pennamen
- a Service de Génétique Médicale , CHU de Bordeaux , Bordeaux , France.,c INSERM U1211, Maladies Rares, Génétique et Métabolisme , Université de Bordeaux , Bordeaux , France
| | - Claudio Plaisant
- a Service de Génétique Médicale , CHU de Bordeaux , Bordeaux , France
| | - Eulalie Lasseaux
- a Service de Génétique Médicale , CHU de Bordeaux , Bordeaux , France
| | - Benoit Arveiler
- a Service de Génétique Médicale , CHU de Bordeaux , Bordeaux , France.,c INSERM U1211, Maladies Rares, Génétique et Métabolisme , Université de Bordeaux , Bordeaux , France
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14
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Bonnemason‐Carrere P, Morice‐Picard F, Pennamen P, Arveiler B, Fergelot P, Goizet C, Hellegouarch M, Lacombe D, Plaisant C, Raclet V, Rooryck C, Lasseaux E, Trimouille A. PADDAS syndrome associated with hair dysplasia caused by a de novo missense variant of
PUM1. Am J Med Genet A 2019; 179:1030-1033. [DOI: 10.1002/ajmg.a.61127] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2018] [Revised: 01/31/2019] [Accepted: 03/05/2019] [Indexed: 01/01/2023]
Affiliation(s)
| | - Fanny Morice‐Picard
- Department of Dermatology, Paediatric Dermatology UnitNational Reference Center for Rare Skin Disorders, CHU Bordeaux Bordeaux France
| | - Perrine Pennamen
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
| | - Benoit Arveiler
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
| | - Patricia Fergelot
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
| | - Cyril Goizet
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
| | | | - Didier Lacombe
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
| | | | | | - Caroline Rooryck
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
| | | | - Aurélien Trimouille
- Department of Medical GeneticsCHU Bordeaux Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM), Inserm U1211, University of Bordeaux Bordeaux France
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15
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Monfermé S, Lasseaux E, Duncombe-Poulet C, Hamel C, Defoort-Dhellemmes S, Drumare I, Zanlonghi X, Dollfus H, Perdomo Y, Bonneau D, Korobelnik JF, Plaisant C, Michaud V, Pennamen P, Rooryck-Thambo C, Morice-Picard F, Paya C, Arveiler B. Mild form of oculocutaneous albinism type 1: phenotypic analysis of compound heterozygous patients with the R402Q variant of the TYR gene. Br J Ophthalmol 2018; 103:1239-1247. [PMID: 30472657 DOI: 10.1136/bjophthalmol-2018-312729] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [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: 09/17/2018] [Revised: 10/23/2018] [Accepted: 11/08/2018] [Indexed: 11/03/2022]
Abstract
AIM Oculocutaneous albinism type 1 (OCA1) is due to TYR mutations. c.1205G>A/p.Arg402Gln (R402Q) is a thermosensitive variant of the TYR gene that has been reported to be responsible for mild forms of OCA1. The aim of our study was to define the phenotype associated with this variant. METHODS In our retrospective series, among 268 patients diagnosed with OCA1, 122 (45.5%) harboured one pathogenic variant of TYR, and the R402Q variant ensured to be in trans by segregation analysis in 69 patients (25.7%), constituting the 'R402Q-OCA1' group. 146 patients harboured two pathogenic variants of the TYR gene other than R402Q. Clinical records were available for 119 of them, constituting the 'Classical-OCA1' group. RESULTS Most R402Q-OCA1 patients presented with white or yellow-white hair at birth (71.43%), blond hair later (46.97%), a light phototype but with residual pigmentation (69.64%), and blue eyes (76.56%). Their pigmentation was significantly higher than in the classical-OCA1 group. All patients from the R402Q-OCA1 group presented with ocular features of albinism. However the prevalence of photophobia (78.13%) and iris transillumination (83.87%) and the severity scores of iris transillumination, retinal hypopigmentation and foveal hypoplasia were lower in the R402Q-OCA1 group. Visual acuity was higher in the R402Q-OCA1 group (0.38±0.21 logarithm of the minimum angle of resolution vs 0.76±0.24). Investigations concerning a possible additive effect of the c.575C>A/p.Ser192 (S192Y) variant of TYR in cis with R402Q, suggested by others, showed no significant impact on the phenotype. CONCLUSION The R402Q variant leads to variable but generally mild forms of albinism whose less typical presentation may lead to underdiagnosis.
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Affiliation(s)
| | - Eulalie Lasseaux
- Service de génétique médicale, CHU de Bordeaux, Bordeaux, France
| | | | - Christian Hamel
- Service d'ophtalmologie, Equipe maladies sensorielles génétiques, CHU de Montpellier, Montpellier, France
| | | | - Isabelle Drumare
- Service d'exploration de la vision et neuro-ophtalmologie, CHRU de Lille, Lille, France
| | | | - Hélène Dollfus
- Centre des affections rares en génétique ophtalmologique, CHU de Strasbourg, Strasbourg, France
| | - Yaurama Perdomo
- Centre des affections rares en génétique ophtalmologique, CHU de Strasbourg, Strasbourg, France
| | | | | | - Claudio Plaisant
- Service de génétique médicale, CHU de Bordeaux, Bordeaux, France
| | - Vincent Michaud
- Service de génétique médicale, CHU de Bordeaux, Bordeaux, France
| | - Perrine Pennamen
- Service de génétique médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
| | - Caroline Rooryck-Thambo
- Service de génétique médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
| | - Fanny Morice-Picard
- Service de dermatologie, Unité de dermato-pédiatrie du CHU de Bordeaux, Bordeaux, France
| | - Clement Paya
- Centre d'ophtalmologie du Palais Gallien, Bordeaux, France
| | - Benoit Arveiler
- Service de génétique médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
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16
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Lasseaux E, Plaisant C, Michaud V, Pennamen P, Trimouille A, Gaston L, Monfermé S, Lacombe D, Rooryck C, Morice-Picard F, Arveiler B. Molecular characterization of a series of 990 index patients with albinism. Pigment Cell Melanoma Res 2018; 31:466-474. [PMID: 29345414 DOI: 10.1111/pcmr.12688] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [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: 11/14/2017] [Accepted: 01/07/2018] [Indexed: 01/11/2023]
Abstract
Albinism is a clinically and genetically heterogeneous disease characterized by variable degrees of hypopigmentation and by nystagmus, foveal hypoplasia, and chiasmatic misrouting of the optic nerves. The wide phenotypic heterogeneity impedes the establishment of phenotype-genotype correlations. To obtain a precise diagnosis, we screened the 19 known albinism genes in 990 index patients using targeted next-generation sequencing (NGS) and high-resolution comparative genomic hybridization. A molecular diagnosis was obtained in 72.32% of patients. A total of 243 new pathogenic variants were identified. Intragenic rearrangements represented 10.8% of all pathogenic alleles. NGS panel analysis allowed establishing a diagnosis for the rarest forms of the disease, which could not be diagnosed otherwise. Because of the clinical overlap between the different forms of the disease, diagnosis nowadays clearly relies on molecular grounds.
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Affiliation(s)
- Eulalie Lasseaux
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Claudio Plaisant
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Vincent Michaud
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | - Perrine Pennamen
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
| | - Aurelien Trimouille
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
| | - Laetitia Gaston
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | | | - Didier Lacombe
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
| | - Caroline Rooryck
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
| | | | - Benoît Arveiler
- Service de Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,INSERM U1211, Maladies Rares, Génétique et Métabolisme, Université de Bordeaux, Bordeaux, France
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17
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Michaud V, Lasseaux E, Plaisant C, Verloes A, Perdomo-Trujillo Y, Hamel C, Elcioglu NH, Leroy B, Kaplan J, Jouk PS, Lacombe D, Fergelot P, Morice-Picard F, Arveiler B. Clinico-molecular analysis of eleven patients with Hermansky-Pudlak type 5 syndrome, a mild form of HPS. Pigment Cell Melanoma Res 2017. [PMID: 28640947 DOI: 10.1111/pcmr.12608] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [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: 12/23/2022]
Abstract
Hermansky-Pudlak syndrome (HPS), first described in 1959, is a rare form of syndromic oculocutaneous albinism associated with bleeding diathesis and in some cases pulmonary fibrosis and granulomatous colitis. All 10 HPS types are caused by defects in vesicle trafficking of lysosome-related organelles (LRO) proteins. The HPS5 protein associates with HPS3 and HPS6 to form the biogenesis of lysosome-related organelles complex-2 (BLOC-2). Here, we report the clinical and genetic data of 11 patients with HPS-5 analyzed in our laboratory. We report 11 new pathogenic variants. The 11 patients present with ocular features that are typical for albinism, with mild hypopigmentation, and with no other major complication, apart from a tendency to bleed. HPS-5 therefore appears as a mild form of HPS, which is often clinically undistinguishable from mild oculocutaneous or ocular forms of albinism. Molecular analysis is therefore required to establish the diagnosis of this mild HPS form, which has consequences in terms of prognosis and of clinical management of the patients.
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Affiliation(s)
- Vincent Michaud
- Service Génétique Médicale, CHU de Bordeaux, Bordeaux, France
| | | | | | - Alain Verloes
- Département de Génétique, Hôpital Robert Debré, Paris, France
| | | | - Christian Hamel
- Service d'Ophtalmologie, CHU de Montpellier, Montpellier, France
| | - Nursel H Elcioglu
- Department of Pediatric Genetics, Marmara University Medical School, Istanbul, Turkey.,Eastern Mediterranean University Medical School, Cyprus, Turkey
| | - Bart Leroy
- Center for Medical Genetics, Ghent University Hospital, Gent, Belgium
| | - Josseline Kaplan
- Laboratoire Génétique Moléculaire, Hôpital Necker-Enfants Malades, Paris, France
| | - Pierre-Simon Jouk
- Service Génétique Clinique, CHU de Grenoble Site La Tronche, Hôpital Couple Enfant, Grenoble, France
| | - Didier Lacombe
- Service Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,Unité INSERM U1211, Maladies Rares: Génétique et Métabolisme, Bordeaux, France
| | - Patricia Fergelot
- Service Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,Unité INSERM U1211, Maladies Rares: Génétique et Métabolisme, Bordeaux, France
| | - Fanny Morice-Picard
- Service Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,Service de Dermatologie Pédiatrique, Centre de Référence Maladies Rares de la Peau, CHU de Bordeaux, Bordeaux, France
| | - Benoit Arveiler
- Service Génétique Médicale, CHU de Bordeaux, Bordeaux, France.,Unité INSERM U1211, Maladies Rares: Génétique et Métabolisme, Bordeaux, France
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18
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Lasseaux E, Morice-Picard F, Plaisant C, Moutton S, Trimouille A, Deves S, Rooryck-Thambo C, Lacombe D, Taieb A, Arveiler B. Étude d’une grande cohorte de patients atteints d’albinisme oculocutané. Ann Dermatol Venereol 2015. [DOI: 10.1016/j.annder.2015.10.352] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Bertolotti A, Lasseaux E, Plaisant C, Trimouille A, Morice-Picard F, Rooryck C, Lacombe D, Couppie P, Arveiler B. Identification of a homozygous mutation of SLC24A5 (OCA6) in two patients with oculocutaneous albinism from French Guiana. Pigment Cell Melanoma Res 2015; 29:104-6. [PMID: 26491832 DOI: 10.1111/pcmr.12425] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Morice-Picard F, Lasseaux E, Plaisant C, Cailley D, Bouron J, Rooryck C, Lacombe D, Pelletier V, Lipsker D, Perdomo-Trujillo Y, Dollfus H, Arveiler B. Albinism in a patient with mutations at both the OA1 and OCA3 loci. Pigment Cell Melanoma Res 2015; 29:107-9. [DOI: 10.1111/pcmr.12408] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Affiliation(s)
- Fanny Morice-Picard
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; University Bordeaux; Bordeaux France
- CHU de Bordeaux; Service de Génétique Médicale; Bordeaux France
| | | | | | | | - Julie Bouron
- CHU de Bordeaux; Service de Génétique Médicale; Bordeaux France
| | - Caroline Rooryck
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; University Bordeaux; Bordeaux France
- CHU de Bordeaux; Service de Génétique Médicale; Bordeaux France
| | - Didier Lacombe
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; University Bordeaux; Bordeaux France
- CHU de Bordeaux; Service de Génétique Médicale; Bordeaux France
| | - Valérie Pelletier
- Centre de référence pour les Affections Rares en Génétique Ophtalmologique (CARGO); Hôpital Civil; Strasbourg France
- Service de Génétique Médicale; Hôpital de Hautepierre; Strasbourg France
| | - Dan Lipsker
- Service de Dermatologie; Hôpital Civil; Strasbourg France
| | - Yaumara Perdomo-Trujillo
- Centre de référence pour les Affections Rares en Génétique Ophtalmologique (CARGO); Hôpital Civil; Strasbourg France
- Service de Génétique Médicale; Hôpital de Hautepierre; Strasbourg France
| | - Hélène Dollfus
- Centre de référence pour les Affections Rares en Génétique Ophtalmologique (CARGO); Hôpital Civil; Strasbourg France
- Service de Génétique Médicale; Hôpital de Hautepierre; Strasbourg France
- Laboratoire de Génétique Médicale; INSERM U1112; Strasbourg France
| | - Benoit Arveiler
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; University Bordeaux; Bordeaux France
- CHU de Bordeaux; Service de Génétique Médicale; Bordeaux France
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Morice-Picard F, Lasseaux E, Cailley D, Gros A, Toutain J, Plaisant C, Simon D, François S, Gilbert-Dussardier B, Kaplan J, Rooryck C, Lacombe D, Arveiler B. High-resolution array-CGH in patients with oculocutaneous albinism identifies new deletions of theTYR, OCA2, andSLC45A2genes and a complex rearrangement of theOCA2gene. Pigment Cell Melanoma Res 2013; 27:59-71. [DOI: 10.1111/pcmr.12173] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Accepted: 09/20/2013] [Indexed: 11/29/2022]
Affiliation(s)
- Fanny Morice-Picard
- Service de Génétique Médicale; CHU de Bordeaux; Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; Univ. Bordeaux; Bordeaux France
| | | | | | - Audrey Gros
- Service de Génétique Médicale; CHU de Bordeaux; Bordeaux France
| | - Jérome Toutain
- Service de Génétique Médicale; CHU de Bordeaux; Bordeaux France
| | | | - Delphine Simon
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; Univ. Bordeaux; Bordeaux France
| | - Stéphane François
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; Univ. Bordeaux; Bordeaux France
| | | | - Josseline Kaplan
- Laboratoire de Génétique; CHU Paris -Hôpital Necker - Enfants Malades; Paris France
| | - Caroline Rooryck
- Service de Génétique Médicale; CHU de Bordeaux; Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; Univ. Bordeaux; Bordeaux France
| | - Didier Lacombe
- Service de Génétique Médicale; CHU de Bordeaux; Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; Univ. Bordeaux; Bordeaux France
| | - Benoit Arveiler
- Service de Génétique Médicale; CHU de Bordeaux; Bordeaux France
- Maladies Rares: Génétique et Métabolisme (MRGM) EA4576; Univ. Bordeaux; Bordeaux France
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Hettinger A, Rackoff A, Wongsuphasawat K, Cheng H, Fairbanks R, Plaisant C, Smith M. 386 Improved Identification and Visualization of Emergency Department Patient Visits. Ann Emerg Med 2011. [DOI: 10.1016/j.annemergmed.2011.06.418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Plaisant C, Mushlin R, Snyder A, Li J, Heller D, Shneiderman B. LifeLines: using visualization to enhance navigation and analysis of patient records. Proc AMIA Symp 1998:76-80. [PMID: 9929185 PMCID: PMC2232192] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023] Open
Abstract
LifeLines provide a general visualization environment for personal histories. We explore its use for clinical patient records. A Java user interface is described, which presents a one-screen overview of a computerized patient record using timelines. Problems, diagnoses, test results or medications can be represented as dots or horizontal lines. Zooming provides more details; line color and thickness illustrate relationships or significance. The visual display acts as a giant menu, giving direct access to the data.
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Affiliation(s)
- C Plaisant
- Human-Computer Interaction Laboratory, University of Maryland Institute for Advanced Computer Studies, USA.
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Carr D, Hasegawa H, Lemmon D, Plaisant C. The effects of time delays on a telepathology user interface. Proc Annu Symp Comput Appl Med Care 1992:256-60. [PMID: 1482878 PMCID: PMC2248124] [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] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Telepathology enables a pathologist to examine physically distant tissue samples by microscope operation over a communication link. Communication links can impose time delays which cause difficulties in controlling the remote device. Such difficulties were found in a microscope teleoperation system. Since the user interface is critical to pathologist's acceptance of telepathology, we redesigned the user interface for this system, built two different versions (a keypad whose movement commands operated by specifying a start command followed by a stop command and a trackball interface whose movement commands were incremental and directly proportional to the rotation of the trackball). We then conducted a pilot study to determine the effect of time delays on the new user interfaces. In our experiment, the keypad was the faster interface when the time delay is short. There was no evidence to favor either the keypad or trackball when the time delay was longer. Inexperienced participants benefitted by allowing them to move long distances over the microscope slide by dragging the field-of-view indicator on the touchscreen control panel. The experiment suggests that changes could be made to the trackball interface which would improve its performance.
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Affiliation(s)
- D Carr
- Human Computer Interaction Laboratory, University of Maryland, College Park 20742
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