Table 1.

Summary of the age at onset, GAA triplet repeat expansion sizes and clinical features for all FRDA positive samples in group A.

Patient no.	Age at onset	Expansion size, allele 1	Expansion size, allele 2	Summary of symptoms
1	55	105	105	Progressive gait ataxia, brisk lower limb reflexes, extensor plantars, dysarthria, reduced vibration sense
2	50	120	120	Cerebellar ataxia, very slowly progressive gait and truncal ataxia, mild dysarthria, impaired balance
3	25	170	420	Progressive gait ataxia, impaired balance, paresthesias in hands and feet, areflexia, reduced vibration and joint position sense, mild dysarthria, blackouts