Mutations in PRRT2 are associated with multiple childhood-onset neurological disorders, including BFIE [(OMIM) # 605751], paroxysmal kinesigenic dyskinesia [PKD; (OMIM) # 128200], and infantile convulsions and choreoathetosis [ICCA; (OMIM) # 602066]. The gene discussed is PRRT2; the disease is episodic kinesigenic dyskinesia 1.