Fiche publication
Date publication
mars 2026
Journal
Nature genetics
Auteurs
Membres identifiés du Cancéropôle Est :
Pr FAIVRE Laurence
,
Pr PHILIPPE Christophe
,
Dr NAMBOT Sophie
,
Pr LEBRE Anne-Sophie
Tous les auteurs :
Leitão E, Santini A, Cogne B, Essid M, Athanasiadou M, LaFlamme CW, Marijon P, Bernard V, Jousselin K, Chatron N, Barcia G, Keren B, Mignot C, Charles P, Besnard T, Paluch R, de Sainte Agathe JM, Almanza Fuerte EP, Sengupta S, Milh M, Ramond F, Allan T, An I, Araujo C, Arpin S, Austin-Tse C, Auvin S, Baer S, Bahi-Buisson N, Bak M, Barth M, Baulac S, Bednarek-Weirauch N, Begemann M, Bennett MF, Bensabath U, Bézieau S, Bhouri R, Biehler M, Hammer TB, Bogoin J, Bonanno E, Boussion S, Bris C, Brosseau-Beauvir A, Bruel AL, Briand-Suleau A, Buratti J, Celse T, Chambon P, Chemaly N, Chesneau B, Colin E, Colmard M, Colson C, Conrad S, Courtin T, Creveaux I, Cullier AC, Dang LT, de Saint Martin A, de Vanssay de Blavous Legendre C, Demeer B, Denommé-Pichon AS, Diekhoff P, DiTroia S, Doco-Fenzy M, Dubourg C, Dubucs C, Ducreux S, Dufour L, Duquet R, Durand B, El Chehadeh S, Elbracht M, Faivre L, Faoucher M, Faudet A, Forlani S, Fradin M, Gaignard P, Ganne B, Garde A, Géraud J, Gill D, Goldenberg A, Grabli D, Grisel C, Gueden S, Gueguen P, Guerrot AM, Guichet A, Haack TB, Härting N, Häusler MG, Heide S, Herget T, Héron B, Héron D, Herwig J, Heulin M, Holling T, Houdayer C, Isidor B, Jacquette A, Januel L, Jean-Marçais N, Kaiser FJ, Kaya S, King C, Konyukh M, Kraft F, Krause J, Kirstetter R, Kuechler A, Kurth I, Kutsche K, Labalme A, Laloy JS, Laugel V, Le Bricquir F, Lèbre AS, Lebrun M, Leguern E, Levy J, Lieffering N, Lyonnet S, Lüthy K, Macdonald SMW, Mansour-Hendili L, Maraval J, Marquardt I, Mattausch C, Mercier S, Messaoud O, Morel G, Mortreux J, Munnich A, Nabbout R, Nambot S, Navarro V, Neale A, Nguyen L, Nizon M, Nowak F, O'Leary MC, Odent S, Ojeda NM, Olin V, Olivieri S, Õunap K, Pais LS, Panagiotakaki E, Patat O, Perrin-Sabourin L, Petit F, Philippe C, Piton A, Planes M, Poirsier C, Pouzet A, Prouteau C, Quéméner-Redon S, Renaud M, Richard AC, Rio M, Rivier C, Robin-Renaldo F, Rollier P, Rossi M, Roubertie A, Ruault V, Rupin-Mas M, Saugier-Veber P, Saunier A, Saneto R, Sarrazin E, Sarret C, Schaefer E, Schluth-Bolard C, Schneider A, Schumann I, Seplyarskiy VB, Spranger S, Smol T, Sturm M, Sunyaev SR, Sperelakis-Beedham B, Stenton SL, Stock F, Tharreau M, Torun D, Toulouse J, Thiyagarajah H, Valence S, Valleix S, Van-Gils J, Villard L, Ville D, Villeneuve N, Vitobello A, Waernessyckle A, Wagner J, Weber Y, Wieczorek D, Witkowski T, Yadavilli M, Yammine T, Zaafrane-Khachnaoui K, Zaki MS, Ziegler A, Bramswig NC, Lermine A, Nicolas G, Gleeson JG, Sadleir LG, Hildebrand MS, Scheffer IE, Whiffin N, O'Donnell-Luria A, Mefford HC, Blanc P, Thevenon J, Charbonnier C, Charenton C, Depienne C, Lesca G, Nava C
Lien Pubmed
Résumé
Small nuclear RNAs (snRNAs) are essential components of the spliceosome. De novo variants in snRNA genes RNU4-2 (ReNU syndrome), RNU5B-1 and RNU2-2 have been linked to dominant neurodevelopmental disorders (NDDs), revealing a large unexpected contribution of noncoding RNA genes to genetic diseases. Here, through international collaborations, we analyze systematically 200 potentially functional snRNA genes in a French cohort of 34,329 people with rare disorders. We report RNU2-2 variants in 141 individuals, including 35 with recurrent dominant pathogenic variants and 91 affected members from 73 families with biallelic variants. Recessive RNU2-2 NDD is at least twice as frequent as the dominant form and often involves a de novo variant in trans with an inherited allele, consistent with the high mutability of snRNA genes. Dominant and recessive RNU2-2 NDDs share overlapping clinical features, with frequent epilepsy. Blood transcriptomics and DNA methylation analyses revealed subtle, variant-specific effects on splicing and episignatures. Our results support a gradient-of-impact model bridging dominant and recessive inheritance, and establish RNU2-2 variants as a principal contributor to NDDs, nearly as prevalent as ReNU syndrome.
Référence
Nat Genet. 2026 03 30;:
