Clinical Evidence for Variegated Silencing in Patients With Friedreich Ataxia.
Layne N RoddenChristian RummeyYi Na DongDavid R LynchPublished in: Neurology. Genetics (2022)
Our data suggest that there is a ceiling effect on the clinical consequences of GAA-TR length in FRDA, as would be predicted by variegated silencing. Patients with GAA-TRs of >700 triplets represent a subgroup in which the severity of clinical manifestations based on GAA-TR length have reached maximal levels and therefore display limited clinical variability in disease progression.