According to the OMIM database, variants in the CACNA1A gene cause “Developmental and epileptic encephalopathy 42,” “Episodic ataxia, type 2,” “Migraine, familial hemiplegic, 1,” “Migraine, familial hemiplegic, 1, with progressive cerebellar ataxia,” and “Spinocerebellar ataxia 6” diseases. This evidence concerns the gene CACNA1A and cerebellar ataxia.