%0 Journal Article
%A Tezenas du Montcel, Sophie
%A Durr, Alexandra
%A Rakowicz, Maria
%A Nanetti, Lorenzo
%A Charles, Perrine
%A Sulek, Anna
%A Mariotti, Caterina
%A Rola, Rafal
%A Schols, Ludger
%A Bauer, Peter
%A Dufaure-Garé, Isabelle
%A Jacobi, Heike
%A Forlani, Sylvie
%A Schmitz-Hübsch, Tanja
%A Filla, Alessandro
%A Timmann, Dagmar
%A van de Warrenburg, Bart P
%A Marelli, Cecila
%A Kang, Jun-Suk
%A Giunti, Paola
%A Cook, Arron
%A Baliko, Laszlo
%A Melegh, Béla
%A Bela, Melegh
%A Boesch, Sylvia
%A Szymanski, Sandra
%A Berciano, José
%A Infante, Jon
%A Buerk, Katrin
%A Masciullo, Marcella
%A Di Fabio, Roberto
%A Depondt, Chantal
%A Ratka, Susanne
%A Stevanin, Giovanni
%A Klockgether, Thomas
%A Brice, Alexis
%A Golmard, Jean-Louis
%T Prediction of the age at onset in spinocerebellar ataxia type 1, 2, 3 and 6.
%J Journal of medical genetics
%V 51
%N 7
%@ 0022-2593
%C London
%I BMJ Publishing Group
%M DZNE-2020-03758
%P 479-486
%D 2014
%X The most common spinocerebellar ataxias (SCA)-SCA1, SCA2, SCA3, and SCA6-are caused by (CAG)n repeat expansion. While the number of repeats of the coding (CAG)n expansions is correlated with the age at onset, there are no appropriate models that include both affected and preclinical carriers allowing for the prediction of age at onset.We combined data from two major European cohorts of SCA1, SCA2, SCA3, and SCA6 mutation carriers: 1187 affected individuals from the EUROSCA registry and 123 preclinical individuals from the RISCA cohort. For each SCA genotype, a regression model was fitted using a log-normal distribution for age at onset with the repeat length of the alleles as covariates. From these models, we calculated expected age at onset from birth and conditionally that this age is greater than the current age.For SCA2 and SCA3 genotypes, the expanded allele was a significant predictor of age at onset (-0.105±0.005 and -0.056±0.003) while for SCA1 and SCA6 genotypes both the size of the expanded and normal alleles were significant (expanded: -0.049±0.002 and -0.090±0.009, respectively; normal: +0.013±0.005 and -0.029±0.010, respectively). According to the model, we indicated the median values (90
%K Adult
%K Age of Onset
%K Algorithms
%K Female
%K Genotype
%K Humans
%K Male
%K Middle Aged
%K Models, Genetic
%K Models, Statistical
%K Spinocerebellar Ataxias: epidemiology
%K Spinocerebellar Ataxias: genetics
%F PUB:(DE-HGF)16
%9 Journal Article
%$ pmid:24780882
%2 pmc:PMC4078703
%R 10.1136/jmedgenet-2013-102200
%U https://pub.dzne.de/record/137436