8 results on '"Corinne, Métay"'
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2. Novel dominant distal titinopathy phenotype associated with copy number variation
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Aurélien Perrin, Raul Juntas Morales, Françoise Chapon, Corinne Thèze, Delphine Lacourt, Henri Pégeot, Emmanuelle Uro‐Coste, Diane Giovannini, Nicolas Leboucq, Martial Mallaret, Emmeline Lagrange, Valérie Rigau, Karen Gaudon, Pascale Richard, Michel Koenig, Corinne Métay, and Mireille Cossée
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Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract The aim of this study was to analyze patients from two distinct families with a novel distal titinopathy phenotype associated with exactly the same CNV in the TTN gene. We used an integrated strategy combining deep phenotyping and complete molecular analyses in patients. The CNV is the most proximal out‐of‐frame TTN variant reported and leads to aberrant splicing transcripts leading to a frameshift. In this case, the dominant effect would be due to dominant‐negative and/or haploinsufficiency. Few CNV in TTN have been reported to date. Our data represent a novel phenotype–genotype association and provides hypotheses for its dominant effects.
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- 2021
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3. Two new cases of interstitial 7q35q36.1 deletion including CNTNAP2 and KMT2C
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Lucie Tosca, Loïc Drévillon, Aurélie Mouka, Laure Lecerf, Audrey Briand, Valérie Ortonne, Virginie Benoit, Sophie Brisset, Lionel Van Maldergem, Quitterie Laudouar, Solveig Heide, Michel Goossens, Irina Giurgea, Gérard Tachdjian, and Corinne Métay
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7q35q36.1 ,array‐CGH ,CNTNAP2 disruption ,interstitial deletion ,KMT2C haploinsufficiency ,Genetics ,QH426-470 - Abstract
Abstract Background Terminal deletions of the long arm of chromosome 7 are well known and frequently associated with syndromic holoprosencephaly due to the involvement of the SHH (aliases HHG1, SMMCI, TPT, TPTPS, and MCOPCB5) gene region. However, interstitial deletions including CNTNAP2 (aliases Caspr2, KIAA0868, and NRXN4) and excluding the SHH region are less common. Methods We report the clinical and molecular characterization associated with pure 7q35 and 7q35q36.1 deletion in two unrelated patients as detected by oligonucleotide‐based array‐CGH analysis. Results The common clinical features were abnormal maternal serum screening during first‐trimester pregnancy, low occipitofrontal circumference at birth, hypotonia, abnormal feet, developmental delay, impaired language development, generalized seizures, hyperactive behavior, friendly personality, and cranio‐facial dysmorphism. Both deletions occurred de novo and sequencing of CNTNAP2, a candidate gene for epilepsy and autism showed absence of mutation on the contralateral allele. Conclusion Combined haploinsufficiency of GALNTL5 (alias GalNAc‐T5L), CUL1, SSPO (aliases SCO‐spondin, KIAA0543, and FLJ36112), AOC1 (alias DAO), RHEB, and especially KMT2C (alias KIAA1506 and HALR) with monoallelic disruption of CNTNAP2 may explain neurologic abnormalities, hypotonia, and exostoses. Haploinsufficiency of PRKAG2 (aliases AAKG, AAKG2, H91620p, WPWS, and CMH6) and KCNH2 (aliases Kv11.1, HERG, and erg1) genes may be responsible of long QT syndrome observed for one patient.
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- 2021
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4. A novel COL1A1 variant in a family with clinical features of hypermobile Ehlers‐Danlos syndrome that proved to be a COL1‐related overlap disorder
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Malika Foy, Philippe De Mazancourt, Corinne Métay, Robert Carlier, Valérie Allamand, Corine Gartioux, Fabrice Gillas, Nawel Miri, Valérie Jobic, Ahmed Mekki, Pascale Richard, Caroline Michot, and Karelle Benistan
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COL1A1 ,connective tissue ,Ehlers‐Danlos Syndrome ,hypermobile EDS ,joint laxity ,Medicine ,Medicine (General) ,R5-920 - Abstract
Abstract COL1‐related overlap disorder is a condition, which is not yet considered as part of the 2017 EDS classification. However, it should be investigated as an alternative diagnosis for any patient with hypermobile EDS. This could allow providing appropriate genetic counseling.
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- 2021
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5. LAMA2-Related Muscular Dystrophy: The Importance of Accurate Phenotyping and Brain Imaging in the Diagnosis of LGMD
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Tanya Stojkovic, Marion Masingue, Corinne Métay, Norma B. Romero, Bruno Eymard, Rabah Ben Yaou, Laetitia Rialland, Séverine Drunat, Corine Gartioux, Isabelle Nelson, Valérie Allamand, Gisèle Bonne, and Rocio Nur Villar-Quiles
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Neurology ,Neurology (clinical) - Abstract
We report three siblings from a non-consanguineous family presenting with contractural limb-girdle phenotype with intrafamilial variability. Muscle MRI showed posterior thigh and quadriceps involvement with a sandwich-like sign. Whole-exome sequencing identified two compound heterozygous missense TTN variants and one heterozygous LAMA2 variant. Brain MRI performed because of concentration difficulties in one of the siblings evidenced white-matter abnormalities, subsequently found in the others. The genetic analysis was re-oriented, revealing a novel pathogenic intronic LAMA2 variant which confirmed the LAMA2-RD diagnosis. This work highlights the importance of a thorough clinical phenotyping and the importance of brain imaging, in order to orientate and interpret the genetic analysis.
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- 2022
6. Prenatal Diagnosis of a 2.5 Mb De Novo 17q24.1q24.2 Deletion Encompassing KPNA2 and PSMD12 Genes in a Fetus with Craniofacial Dysmorphism, Equinovarus Feet, and Syndactyly
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Marie-Emmanuelle Naud, Lucie Tosca, Jelena Martinovic, Julien Saada, Corinne Métay, Loïc Drévillon, Virginie Benoit, Sophie Brisset, and Gérard Tachdjian
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Genetics ,QH426-470 - Abstract
Interstitial 17q24.1 or 17q24.2 deletions were reported after conventional cytogenetic analysis or chromosomal microarray analysis in patients presenting intellectual disability, facial dysmorphism, and/or malformations. We report on a fetus with craniofacial dysmorphism, talipes equinovarus, and syndactyly associated with a de novo 2.5 Mb 17q24.1q24.2 deletion. Among the deleted genes, KPNA2 and PSMD12 are discussed for the correlation with the fetal phenotype. This is the first case of prenatal diagnosis of 17q24.1q24.2 deletion.
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- 2017
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7. Long-Reads Sequencing Strategy to Localize Variants in TTN Repeated Domains
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Aurélien Perrin, Charles Van Goethem, Corinne Thèze, Jacques Puechberty, Thomas Guignard, Bérénice Lecardonnel, Delphine Lacourt, Corinne Métay, Arnaud Isapof, Sandra Whalen, Ana Ferreiro, Marie-Christine Arne-Bes, Susana Quijano-Roy, Juliette Nectoux, France Leturcq, Pascale Richard, Marion Larrieux, Anne Bergougnoux, Franck Pellestor, Michel Koenig, Mireille Cossée, MORNET, Dominique, Physiologie & médecine expérimentale du Cœur et des Muscles [U 1046] (PhyMedExp), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM), Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Hôpital Arnaud de Villeneuve [CHRU Montpellier], Unité de Génétique Chromosomique [Montpellier], Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée [Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Hôpital Arnaud de Villeneuve [CHRU Montpellier], Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier)-Centre Hospitalier Régional Universitaire [Montpellier] (CHRU Montpellier), Université de Montpellier (UM), Centre de recherche en Myologie – U974 SU-INSERM, Institut National de la Santé et de la Recherche Médicale (INSERM)-Sorbonne Université (SU), CHU Pitié-Salpêtrière [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Sorbonne Université (SU), CHU Trousseau [APHP], Unité de Biologie Fonctionnelle et Adaptative (BFA (UMR_8251 / U1133)), Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université Paris Cité (UPCité), Centre Hospitalier Universitaire de Purpan (CHU Purpan), Handicap neuromusculaire : Physiopathologie, Biothérapie et Pharmacologies appliquées (END-ICAP), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut National de la Santé et de la Recherche Médicale (INSERM), Hôpital Raymond Poincaré [AP-HP], Université Paris-Saclay, Université de Versailles Saint-Quentin-en-Yvelines - UFR Sciences de la santé Simone Veil (UVSQ Santé), Université de Versailles Saint-Quentin-en-Yvelines (UVSQ), Hôpital Cochin [AP-HP], Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP), Supported by AFM 21384 grant [The French Muscular Dystrophy Association (AFM-Téléthon)] (A.P.), the Délégation à la Recherche Clinique et à l’Innovation du Groupement de Coopération Sanitaire de la Mission d’Enseignement, de Recherche, de Référence et d’Innovation de Montpellier-Nîmes (A.P.), and the research platform Chromostem., and C.T. and J.P. contributed equally to this work. F.P. and M.K. contributed equally to this work.
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MESH: Alternative Splicing ,MESH: genetics Connectin ,Exons ,[SDV.GEN.GH] Life Sciences [q-bio]/Genetics/Human genetics ,MESH: genetics ,Pathology and Forensic Medicine ,MESH: genetics Exons ,MESH: genetics Humans Muscular Diseases ,Alternative Splicing ,MESH: genetics Protein Isoforms ,[SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics ,Muscular Diseases ,Molecular Medicine ,Humans ,Protein Isoforms ,Connectin - Abstract
International audience; Titin protein is responsible for muscle elasticity. The TTN gene, composed of 364 exons, is subjected to extensive alternative splicing and leads to different isoforms expressed in skeletal and cardiac muscle. Variants in TTN are responsible for myopathies with a wide phenotypic spectrum and autosomal dominant or recessive transmission. The I-band coding domain, highly subject to alternative splicing, contains a three-zone block of repeated sequences with 99% homology. Sequencing and localization of variants in these areas are complex when using short-reads sequencing, a second-generation sequencing technique. We have implemented a protocol based on the third-generation sequencing technology (long-reads sequencing). This new method allows us to localize variants in these repeated areas to improve the diagnosis of TTN-related myopathies and offer the analysis of relatives in postnatal or in prenatal screening.
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- 2022
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8. The clinical, histologic, and genotypic spectrum of
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Rocio N, Villar-Quiles, Maja, von der Hagen, Corinne, Métay, Victoria, Gonzalez, Sandra, Donkervoort, Enrico, Bertini, Claudia, Castiglioni, Denys, Chaigne, Jaume, Colomer, Maria Luz, Cuadrado, Marianne, de Visser, Isabelle, Desguerre, Bruno, Eymard, Nathalie, Goemans, Angela, Kaindl, Emmanuelle, Lagrue, Jürg, Lütschg, Edoardo, Malfatti, Michèle, Mayer, Luciano, Merlini, David, Orlikowski, Ulrike, Reuner, Mustafa A, Salih, Beate, Schlotter-Weigel, Mechthild, Stoetter, Volker, Straub, Haluk, Topaloglu, J Andoni, Urtizberea, Anneke, van der Kooi, Ekkehard, Wilichowski, Norma B, Romero, Michel, Fardeau, Carsten G, Bönnemann, Brigitte, Estournet, Pascale, Richard, Susana, Quijano-Roy, Ulrike, Schara, and Ana, Ferreiro
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Adult ,Male ,Adolescent ,Genotype ,Muscle Proteins ,Middle Aged ,Article ,Young Adult ,Muscular Diseases ,Child, Preschool ,Humans ,Female ,Child ,Selenoproteins ,Follow-Up Studies ,Retrospective Studies - Abstract
OBJECTIVE: To clarify the prevalence, long-term natural history, and severity determinants of SEPN1-related myopathy (SEPN1-RM), we analyzed a large international case series. METHODS: Retrospective clinical, histologic, and genetic analysis of 132 pediatric and adult patients (2–58 years) followed up for several decades. RESULTS: The clinical phenotype was marked by severe axial muscle weakness, spinal rigidity, and scoliosis (86.1%, from 8.9 ± 4 years), with relatively preserved limb strength and previously unreported ophthalmoparesis in severe cases. All patients developed respiratory failure (from 10.1±6 years), 81.7% requiring ventilation while ambulant. Histopathologically, 79 muscle biopsies showed large variability, partly determined by site of biopsy and age. Multi-minicores were the most common lesion (59.5%), often associated with mild dystrophic features and occasionally with eosinophilic inclusions. Identification of 65 SEPN1 mutations, including 32 novel ones and the first pathogenic copy number variation, unveiled exon 1 as the main mutational hotspot and revealed the first genotype–phenotype correlations, bi-allelic null mutations being significantly associated with disease severity (p = 0.017). SEPN1-RM was more severe and progressive than previously thought, leading to loss of ambulation in 10% of cases, systematic functional decline from the end of the third decade, and reduced lifespan even in mild cases. The main prognosis determinants were scoliosis/respiratory management, SEPN1 mutations, and body mass abnormalities, which correlated with disease severity. We propose a set of severity criteria, provide quantitative data for outcome identification, and establish a need for age stratification. CONCLUSION: Our results inform clinical practice, improving diagnosis and management, and represent a major breakthrough for clinical trial readiness in this not so rare disease.
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- 2019
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