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Clinical and genetic keys to cerebellar ataxia due to FGF14 GAA expansions

2023; Elsevier BV; Volume: 99; Linguagem: Inglês

10.1016/j.ebiom.2023.104931

2352-3964

Jean‐Loup Méreaux, Claire-Sophie Davoine, David Pellerin, Giulia Coarelli, Marie Coutelier, Claire Ewenczyk, Marie‐Lorraine Monin, Mathieu Anheim, Isabelle Le Ber, Stéphane Thobois, Florent Gobert, Léna Guillot‐Noël, Sylvie Forlani, Ludmila Jornéa, Anna Heinzmann, Aude Sangaré, Bertrand Gaymard, Lucie Guyant‐Maréchal, Perrine Charles, Cécilia Marelli, Jérôme Honnorat, Bertrand Degos, François Tison, Sophie Sangla, M. Simonetta‐Moreau, François Salachas, Maya Tchikviladzé, Giovanni Castelnovo, Fanny Mochel, Stephan Klebe, Anna Castrioto, Silvia Fenu, Aurélie Méneret, Frédéric Bourdain, Marion Wandzel, Virginie Roth, Céline Bonnet, Florence Riant, Giovanni Stévanin, Sandrine Noël, Anne‐Laure Fauret‐Amsellem, Melanie Bahlo, Paul J. Lockhart, Bernard Brais, Mathilde Renaud, Alexis Brice, Alexandra Dürr,

Nuclear Structure and Function

SCA27B caused by FGF14 intronic heterozygous GAA expansions with at least 250 repeats accounts for 10-60% of cases with unresolved cerebellar ataxia. We aimed to assess the size and frequency of FGF14 expanded alleles in individuals with cerebellar ataxia as compared with controls and to characterize genetic and clinical variability.