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

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 characteriz...

Full description

Saved in:
Bibliographic Details
Published in:EBioMedicine 2024-01, Vol.99, p.104931-104931, Article 104931
Main Authors: Méreaux, Jean-Loup, Davoine, Claire-Sophie, Pellerin, David, Coarelli, Giulia, Coutelier, Marie, Ewenczyk, Claire, Monin, Marie-Lorraine, Anheim, Mathieu, Le Ber, Isabelle, Thobois, Stéphane, Gobert, Florent, Guillot-Noël, Léna, Forlani, Sylvie, Jornea, Ludmila, Heinzmann, Anna, Sangare, Aude, Gaymard, Bertrand, Guyant-Maréchal, Lucie, Charles, Perrine, Marelli, Cecilia, Honnorat, Jérôme, Degos, Bertrand, Tison, François, Sangla, Sophie, Simonetta-Moreau, Marion, Salachas, François, Tchikviladzé, Maya, Castelnovo, Giovanni, Mochel, Fanny, Klebe, Stephan, Castrioto, Anna, Fenu, Silvia, Méneret, Aurélie, Bourdain, Frédéric, Wandzel, Marion, Roth, Virginie, Bonnet, Céline, Riant, Florence, Stevanin, Giovanni, Noël, Sandrine, Fauret-Amsellem, Anne-Laure, Bahlo, Melanie, Lockhart, Paul J., Brais, Bernard, Renaud, Mathilde, Brice, Alexis, Durr, Alexandra
Format: Article
Language:English
Subjects:
Ataxia - diagnosis
Ataxia - genetics
Australia
Canada
Cerebellar Ataxia - diagnosis
Cerebellar Ataxia - genetics
Child
Cross-Sectional Studies
Diagnosis
Friedreich Ataxia - genetics
GAA expansion
Hereditary cerebellar ataxia
Humans
Life Sciences
SCA27B
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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. We sized this repeat in 1876 individuals from France sampled for research purposes in this cross-sectional study: 845 index cases with cerebellar ataxia and 324 affected relatives, 475 controls, as well as 119 cases with spastic paraplegia, and 113 with familial essential tremor. A higher frequency of expanded allele carriers in index cases with ataxia was significant only above 300 GAA repeats (10.1%, n = 85) compared with controls (1.1%, n = 5) (p 
ISSN:2352-3964
2352-3964
DOI:10.1016/j.ebiom.2023.104931