Cerebellar Ataxia, Brain Abnormalities, and Cardiac Conduction Defects, also known as cabac, is related to benign idiopathic neonatal seizures. An important gene associated with Cerebellar Ataxia, Brain Abnormalities, and Cardiac Conduction Defects is EXOSC5 (Exosome Component 5). Affiliated tissues include brain and heart, and related phenotypes are intellectual disability and hyperreflexia