KCNMA1 and paroxysmal nonkinesigenic dyskinesia: A similar phenomenon has also been seen for the potassium channel BK (KCNMA1) where mutations of the channel lead to paroxysmal non-kinesigenic dyskinesia (PNKD3) with a broad spectrum of developmental and neurological phenotypes and seizures seen in a proportion of the patients (Liang et al., 2019).