Spinocerebellar Ataxia 23, also known as spinocerebellar ataxia type 23, is related to spinocerebellar ataxia 1 and autosomal dominant cerebellar ataxia, and has symptoms including gait ataxia An important gene associated with Spinocerebellar Ataxia 23 is PDYN (Prodynorphin). Affiliated tissues include spinal cord and cerebellum, and related phenotypes are hyperreflexia and gait ataxia