Table 2: Subtype classification of patients with SCA3 and dystonia and their relatives with SCA3.

Family Patient SCA3 subtype Relatives
SCA3 subtype Clinical features
1 1 2     aunt 2 A,D, N
    brother 2 bulging eyes, A,D, N, horizontal and vertical ophthalmoplegia
    nephew 2 A
2 2 1     brother 3 A,D, N, vertical ophthalmoplegia
3 2     cousin 3 A,D, N, tremor, spasticity, fasciculação corpo, sensib. Face and body fasciculations
4 2     sister 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, face and body fasciculations, Babinski, hyperreflexia, spasticity
    sister 3 bulging eyes, A,D, N, horizontal, Babinski ophthalmoplegia
    cousin 2 A,D, N, horizontal ophthalmoplegia, Babinski, hyperreflexia
    sister 3 bulging eyes, A,D, N, face and body fasciculations
    brother 3 bulging eyes, A,D, N, horizontal ophthalmoplegia, face and body fasciculations, Babinski,
3 5 1     sister 4 bulging eyes, A,D, N, horizontal ophthalmoplegia, parkinsonism, hyperreflexia, spasticity
    brother 2 A,D, N, horizontal ophthalmoplegia l, hyperreflexia, spasticity
    sister 7 bulging eyes, A,D, N, horizontal ophthalmoplegl, fasciculation, parkinsonism, Babinski, hyperreflexia
4 6 1     brother 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, hyperreflexia
    sister 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, hyperreflexia
    brother 2 bulging eyes, A,D, N, Babinski, hyperreflexia
    father 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, fasciculation, hyperreflexia, esspasticity
    brother 3 bulging eyes, A,D, N, horizontal ophthalmoplegia, fasciculation
    sister 2 A,D, N, hyperreflexia
5 7 1     sister 2 A,D, hyperreflexia
6 8 1     brother 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, fasciculation, hyperreflexia
7 9 1     father 2 bulging eyes, A,D, tremor,Babinski, hyperreflexia, spasticity, fasciculation, neurogenic bladder
    brother 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, hyperreflexia, spasticity, fasciculation
8 10 2     cousin 2 bulging eyes, A,D, N, horizontal ophthalmoplegia, hyperreflexia
    brother 1 A,D, N, horizontal ophthalmoplegia, fasciculation, parkinsonism, hyperreflexia, spasticity
    cousin 3 bulging eyes, A,D, N, horizontal ophthalmoplegia, fasciculation, periferic neuropathy
    cousin 2 A,D, N, hyperreflexia
    cousin 2 A,D, N, horizontal ophthalmoplegia
    cousin 6 A,N, horizontal ophthalmoplegia
    cousin 4 bulging eyes, A,D, N, horizontal ophthalmoplegia, parkinsonism, tremor, fasciculation
9 11 1     - - -
12 1     - - -
13 1     - - -
14 1     - - -

A Ataxia, D:Disartria, N: Nystagmus