[Molecular physiopathology of the spinocerebellar ataxia type 6 (SCA6)].

Spinocerebellar ataxia type 6 (SCA6) is a neurodegenerative, monogenic, and autosomic dominant disease which is characterized by a global cerebellar atrophy. Typically the onset is at mature age and undergoes a moderate evolution. This illness has been associated with a mutation in the gene CACNA1A, that encodes for subunit alpha1A of P/Q type voltage/dependent calcium channel.