PRRT2 and childhood absence epilepsy: To date, heterozygous PRRT2 mutations have been found in a multitude of patients with BFIE [20], ICCA [20, 53], Paroxysmal Non-Kinesigenic Dyskinesia (PNKD) [55], Paroxysmal Exertion-induced Dyskinesia (PED) [56], childhood absence epilepsy and febrile seizures [57, 58].