The history of spinocerebellar ataxia type 10 in Brazil: travels of a gene.

The authors report the history of spinocerebellar ataxia 10 (SCA10), since its first report in a large Portuguese-ancestry family with autosomal dominant pure cerebellar ataxia, till the final identification of further families without Mexican ancestry. These families present a quite different phenotype from those SCA10 families described in Mexico.