The Parkinsonian Phenotype of Spinocerebellar Ataxia Type 2

Abstract

We conclude that SCA2 is a minor cause of familial parkinsonism, particularly in Taiwan. The parkinsonian phenotype is associated predominantly with a shorter abnormal range of CAG repeat lengths and older onset age. Because of the clinical resemblance among familial parkinsonisms, we suggest that SCA2 should be excluded in cases of familial parkinsonism.