Fiche publication
Date publication
mars 2025
Journal
European journal of human genetics : EJHG
Auteurs
Membres identifiés du Cancéropôle Est :
Pr PHILIPPE Christophe
,
Pr THAUVIN-ROBINET Christel
Tous les auteurs :
Houdayer C, Rooney K, van der Laan L, Bris C, Alders M, Bahr A, Barcia G, Battault C, Begemann A, Bonneau D, Bonnevalle A, Boughalem A, Bourges A, Bournez M, Bruel AL, Buhas D, Carallis F, Cogné B, Cormier-Daire V, Delanne J, Demaret T, Denommé-Pichon AS, Désir J, Dubourg C, Fradin M, Geneviève D, Goel H, Goldenberg A, Gripp KW, Guichet A, Guimier A, Jacquinet A, Keren B, Legoff L, Levy MA, McConkey H, Mendelsohn BA, Mignot C, Milon V, Nizon M, Oneda B, Pasquier L, Patat O, Philippe C, Procaccio V, Procopio R, Prouteau C, Rambaud T, Rauch A, Relator R, Rondeau S, Santen GWE, Schleit J, Sorlin A, Steindl K, Tedder M, Tessarech M, Mau-Them FT, Trost D, Van der Sluijs PJ, Vincent M, Whalen S, Thauvin-Robinet C, Isidor B, Sadikovic B, Vitobello A, Colin E
Lien Pubmed
Résumé
Rare genetic variants in ARID2 are responsible for a recently described neurodevelopmental condition called ARID2-related disorder (ARID2-RD). ARID2 belongs to PBAF, a unit of the SWI/SNF complex, which is a chromatin remodeling complex. This work aims to further delineate the phenotypic spectrum of ARID2-RD, providing clinicians with additional data for better care and aid in the future diagnosis of this condition. We obtained the genotypes and phenotypes of 27 previously unreported individuals with ARID2-RD and compared this series with findings in the literature. We also assessed peripheral blood DNA methylation profiles in individuals with ARID2-RD compared to episignatures of controls, unresolved cases, and other neurodevelopmental disorders. The main clinical features of ARID2-RD are developmental delay, speech disorders, intellectual disability (ID), behavior problems, short stature, and various dysmorphic and ectodermal features. Genome-wide differential methylation analysis revealed a global hypermethylated profile in ARID2-RD that could aid in reclassifying variants of uncertain significance. Our study doubles the number of reported individuals with ARID2 pathogenic variants to 53. It confirms loss-of-function as a pathomechanism and shows the absence of a clear genotype-phenotype correlation. We provide evidence for a unique DNA methylation episignature for ARID2-RD and further delineate the ARID2-associated phenotype.
Référence
Eur J Hum Genet. 2025 03 5;:
