Epilepsy, Familial Focal, with Variable Foci 4, is also known as ffevf4. An important gene associated with Epilepsy, Familial Focal, with Variable Foci 4 is SCN3A (Sodium Voltage-Gated Channel Alpha Subunit 3). Affiliated tissues include temporal lobe and brain, and related phenotypes are hypotonia and abnormal autonomic nervous system physiology