Cerebellar Ataxia, Impaired Intellectual Development, and Dysequilibrium Syndrome 2, is also known as cerebellar ataxia, mental retardation, and dysequilibrium syndrome 2, and has symptoms including cerebellar ataxia, tremor and dysdiadochokinesis. An important gene associated with Cerebellar Ataxia, Impaired Intellectual Development, and Dysequilibrium Syndrome 2 is WDR81 (WD Repeat Domain 81). Affiliated tissues include brain and cerebellum.