Spinocerebellar ataxia type 29 (Q101089)

Spinocerebellar ataxia type 29 is a very rare subtype of autosomal dominant cerebellar ataxia type 3 characterized by the onset during infancy of very slowly progressive or non-progressive ataxia, dysarthria, nystagmus, dysdiadochokinesia, dystonia, dysmetria and intelectual disability. The causal gene is not yet identified but is located on chromosome 3p and due to its close proximity to the SCA15 gene, it is thought that both diseases may be allelic.