Mutations in the KCNA1 gene, encoding for the alpha subunit of the voltage‐gated potassium channel Kv1.1, in humans can produce a broad spectrum of phenotypes but most commonly lead to development of episodic ataxia type 1 (EA1), a rare neurological movement disorder (Paulhus et al., 2020). The gene discussed is KCNA1; the disease is episodic ataxia type 1.