spinocerebellar ataxia type 29 (MONDO_0007298) (SCA29) is a rare subtype of autosomal dominant cerebellar ataxia type I (ADCA type I) characterized by very slowly progressive or non-progressive ataxia, dysarthria, oculomotor abnormalities and intellectual disability. Also known as: SCA29, congenital nonprogressive spinocerebellar ataxia, spinocerebellar ataxia 29, congenital nonprogressive.