Spinocerebellar Ataxia 42, also known as spinocerebellar ataxia type 42, is related to spinocerebellar ataxia 42, early-onset, severe, with neurodevelopmental deficits and autosomal dominant cerebellar ataxia. An important gene associated with Spinocerebellar Ataxia 42 is CACNA1G (Calcium Voltage-Gated Channel Subunit Alpha1 G). Affiliated tissues include spinal cord and cerebellum, and related phenotypes are dysarthria and abnormal cerebellum morphology