Mutations in the KCNA1 gene can lead to the development of episodic ataxia type 1 (EA1), an autosomal dominant disorder with multiple symptoms, most prominently episodes of cerebellar ataxia and myokymia (Browne et al., 1994; Paulhus et al., 2020). Here, KCNA1 is linked to episodic ataxia type 1.