Epilepsy, Idiopathic Generalized 17, also known as febrile seizures, familial, 2, is related to familial febrile seizures and febrile seizures, familial, 1. An important gene associated with Epilepsy, Idiopathic Generalized 17 is HCN2 (Hyperpolarization Activated Cyclic Nucleotide Gated Potassium And Sodium Channel 2). Affiliated tissues include brain and temporal lobe, and related phenotypes are bilateral tonic-clonic seizure and atonic seizure