Table 3

Frequencies of haplogroups H, J, K, T, and U in patients with Friedreich’s ataxia, classified according the presence or absence of hypertrophic cardiomyopathy (HCM) and the repeat length

Group AGroup B
HaplogroupsHCM+HCM−HCM+HCM−
Group A includes patients carrying a GAA expansion <654 triplets.
Group B includes patients carrying a GAA expansion ⩾ 654 triplets.
HCM+/− means the presence or absence of hypertrophic cardiomyopathy.
H 164212
J 5103
K 2230
T 2402
U 2514