| A very rare subtype of type I autosomal dominant cerebellar ataxia with characteristics of slowly progressive cerebellar ataxia, mild cognitive impairment, postural and or resting tremor, bradykinesia, and rigidity. Prevalence is unknown. Fewer than 20 cases in a 4-generation French family have been reported to date. Maps to chromosome 7p21.3-p15.1 but the gene and gene mutation have not been identified. |
