Spinocerebellar ataxia type 19 (SCA19) is a very rare subtype of type I autosomal dominant cerebellar ataxia (ADCA type I). It is characterized by mild cerebellar ataxia, cognitive impairment, low scores on the Wisconsin Card Sorting Test measuring executive function, myoclonus, and postural tremor. The disease is Monarch Disease Ontology term MONDO_0011819 (spinocerebellar ataxia type 19/22). Also known as: SCA19/22, spinocerebellar ataxia type 19.