Epilepsy, Idiopathic Generalized 13, also known as epilepsy, childhood absence 4, is related to mood disorder and angelman syndrome. An important gene associated with Epilepsy, Idiopathic Generalized 13 is GABRA1 (Gamma-Aminobutyric Acid Type A Receptor Subunit Alpha1). Affiliated tissues include brain, and related phenotype is reproductive system.