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 This evidence concerns the gene KCNMA1 and Global developmental delay.