Mutations in the PRRT2 gene are associated with various neurological seizure-inducing disorders, including PKD (1, 9), BFIE (2, 10), and familial infantile convulsions with paroxysmal choreoathetosis (infantile convulsions and choreoathetosis, ICCA) (3). This evidence concerns the gene PRRT2 and infantile convulsions and choreoathetosis.