Fig. 3
From: Onset features and time to diagnosis in Friedreich’s Ataxia
Relationship between age at onset and GAA1-repeat length in FRDA siblings. In 54 siblings’ pairs with FRDA, age at onset and GAA1-repeat length varied between the first sibling to become symptomatic and the latter one. In the graphic, difference in age at onset (in years) across the sibling pairs is plotted against difference in GAA1-repeat length. No correlation was found between the two variables (r = − 0,14, p = 0,3)