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Your search keyword '"Arpin, Stéphanie"' showing total 2 results
Start Over Author "Arpin, Stéphanie" Publisher elsevier
2 results on '"Arpin, Stéphanie"'

1. Immunopathological manifestations in Kabuki syndrome: a registry study of 177 individuals.

Author

Margot H, Boursier G, Duflos C, Sanchez E, Amiel J, Andrau JC, Arpin S, Brischoux-Boucher E, Boute O, Burglen L, Caille C, Capri Y, Collignon P, Conrad S, Cormier-Daire V, Delplancq G, Dieterich K, Dollfus H, Fradin M, Faivre L, Fernandes H, Francannet C, Gatinois V, Gerard M, Goldenberg A, Ghoumid J, Grotto S, Guerrot AM, Guichet A, Isidor B, Jacquemont ML, Julia S, Khau Van Kien P, Legendre M, Le Quan Sang KH, Leheup B, Lyonnet S, Magry V, Manouvrier S, Martin D, Morel G, Munnich A, Naudion S, Odent S, Perrin L, Petit F, Philip N, Rio M, Robbe J, Rossi M, Sarrazin E, Toutain A, Van Gils J, Vera G, Verloes A, Weber S, Whalen S, Sanlaville D, Lacombe D, Aladjidi N, and Geneviève D

Subjects
Abnormalities, Multiple genetics, Abnormalities, Multiple immunology, Adolescent, Adult, Aged, Child, Child, Preschool, Female, Genetic Association Studies, Hematologic Diseases genetics, Hematologic Diseases immunology, Humans, Infant, Infant, Newborn, Male, Middle Aged, Mutation, Prevalence, Registries, Severity of Illness Index, Vestibular Diseases genetics, Vestibular Diseases immunology, Young Adult, Autoimmune Diseases epidemiology, DNA-Binding Proteins genetics, Face abnormalities, Hematologic Diseases complications, Histone Demethylases genetics, Neoplasm Proteins genetics, Primary Immunodeficiency Diseases epidemiology, Vestibular Diseases complications
Abstract

Purpose: Kabuki syndrome (KS) (OMIM 147920 and 300867) is a rare genetic disorder characterized by specific facial features, intellectual disability, and various malformations. Immunopathological manifestations seem prevalent and increase the morbimortality. To assess the frequency and severity of the manifestations, we measured the prevalence of immunopathological manifestations as well as genotype-phenotype correlations in KS individuals from a registry., Methods: Data were for 177 KS individuals with KDM6A or KMT2D pathogenic variants. Questionnaires to clinicians were used to assess the presence of immunodeficiency and autoimmune diseases both on a clinical and biological basis., Results: Overall, 44.1% (78/177) and 58.2% (46/79) of KS individuals exhibited infection susceptibility and hypogammaglobulinemia, respectively; 13.6% (24/177) had autoimmune disease (AID; 25.6% [11/43] in adults), 5.6% (10/177) with ≥2 AID manifestations. The most frequent AID manifestations were immune thrombocytopenic purpura (7.3% [13/177]) and autoimmune hemolytic anemia (4.0% [7/177]). Among nonhematological manifestations, vitiligo was frequent. Immune thrombocytopenic purpura was frequent with missense versus other types of variants (p = 0.027)., Conclusion: The high prevalence of immunopathological manifestations in KS demonstrates the importance of systematic screening and efficient preventive management of these treatable and sometimes life-threatening conditions.

Published
2020
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2. Molecular diagnosis of PIK3CA-related overgrowth spectrum (PROS) in 162 patients and recommendations for genetic testing.

Author

Kuentz P, St-Onge J, Duffourd Y, Courcet JB, Carmignac V, Jouan T, Sorlin A, Abasq-Thomas C, Albuisson J, Amiel J, Amram D, Arpin S, Attie-Bitach T, Bahi-Buisson N, Barbarot S, Baujat G, Bessis D, Boccara O, Bonnière M, Boute O, Bursztejn AC, Chiaverini C, Cormier-Daire V, Coubes C, Delobel B, Edery P, Chehadeh SE, Francannet C, Geneviève D, Goldenberg A, Haye D, Isidor B, Jacquemont ML, Khau Van Kien P, Lacombe D, Martin L, Martinovic J, Maruani A, Mathieu-Dramard M, Mazereeuw-Hautier J, Michot C, Mignot C, Miquel J, Morice-Picard F, Petit F, Phan A, Rossi M, Touraine R, Verloes A, Vincent M, Vincent-Delorme C, Whalen S, Willems M, Marle N, Lehalle D, Thevenon J, Thauvin-Robinet C, Hadj-Rabia S, Faivre L, Vabres P, and Rivière JB

Subjects
Adolescent, Adult, Alleles, Amino Acid Substitution, Child, Child, Preschool, Class I Phosphatidylinositol 3-Kinases metabolism, Disease Management, Female, Genetic Predisposition to Disease, Genotype, High-Throughput Nucleotide Sequencing, Humans, Infant, Infant, Newborn, Male, Mosaicism, Phenotype, Prenatal Diagnosis, Sequence Analysis, DNA, Young Adult, Class I Phosphatidylinositol 3-Kinases genetics, Genetic Association Studies, Genetic Testing methods, Growth Disorders diagnosis, Growth Disorders genetics, Mutation
Abstract

Purpose: Postzygotic activating mutations of PIK3CA cause a wide range of mosaic disorders collectively referred to as PIK3CA-related overgrowth spectrum (PROS). We describe the diagnostic yield and characteristics of PIK3CA sequencing in PROS., Methods: We performed ultradeep next-generation sequencing (NGS) of PIK3CA in various tissues from 162 patients referred to our clinical laboratory and assessed diagnostic yield by phenotype and tissue tested., Results: We identified disease-causing mutations in 66.7% (108/162) of patients, with mutant allele levels as low as 1%. The diagnostic rate was higher (74%) in syndromic than in isolated cases (35.5%; P = 9.03 × 10 -5 ). We identified 40 different mutations and found strong oncogenic mutations more frequently in patients without brain overgrowth (50.6%) than in those with brain overgrowth (15.2%; P = 0.00055). Mutant allele levels were higher in skin and overgrown tissues than in blood and buccal samples (P = 3.9 × 10 -25 ), regardless of the phenotype., Conclusion: Our data demonstrate the value of ultradeep NGS for molecular diagnosis of PROS, highlight its substantial allelic heterogeneity, and confirm that optimal diagnosis requires fresh skin or surgical samples from affected regions. Our findings may be of value in guiding future recommendations for genetic testing in PROS and other mosaic conditions.Genet Med advance online publication 02 February 2017.

Published
2017
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