Epilepsy, Idiopathic Generalized 15, also known as epilepsy, idiopathic generalized, susceptibility to, 15, is related to contractures, pterygia, and spondylocarpotarsal fusion syndrome 1a and ataxia with vitamin e deficiency. An important gene associated with Epilepsy, Idiopathic Generalized 15 is RORB (RAR Related Orphan Receptor B), and among its related pathways/superpathways are ncRNAs involved in Wnt signaling in hepatocellular carcinoma and Vitamin D receptor pathway. Affiliated tissues include brain, and related phenotypes are atypical behavior and seizure