KCNMA1 and movement disorder: The neurologic phenotype in KCNMA1‐linked channelopathy can include seizures, speech/language and motor developmental delays, cerebellar atrophy, microcephaly, hypotonia, facial dysmorphisms, visceral malformations, and movement disorders such as ataxia, dystonia, and paroxysmal non‐kinesigenic dyskinesia (PNKD).2