CACNA1A and spinocerebellar ataxia type 6: Several other neurological disorders are caused by pathogenic variants in CACNA1A, including familial hemiplegic migraine (FHM1, MIM #301011) and spinocerebellar ataxia type 6 (SCA6, MIM #183086), and the gene has also been related to other hemiplegic migraine (HM)-associated phenotypes like alternating hemiplegia of childhood8, acute striatal necrosis9, hemiplegia-hemiconvulsion-epilepsy10 or recurrent ischemic stroke11.