ATXN10 and epilepsy: SCA 10 was originally described in families of Mexican origin and has awell-defined clinical picture, namely: the cerebellar syndrome patients have a“pure” cerebellar form, often accompanied by epilepsy and peripheralneuropathy.25,38,39 The disease-causing mutation of SCA 10 is a largeexpansion of the pentanucleotide (ATTCT) repeat located in an intron of a geneof unknown function, SCA10, on chromosome 22q.25,38,39,40,41