Vein of Galen Aneurysmal Malformation, also known as vein of galen arteriovenous malformations, is related to hydrocephalus and arteriovenous malformation. An important gene associated with Vein of Galen Aneurysmal Malformation is EPHB4 (EPH Receptor B4). Affiliated tissues include heart and brain, and related phenotypes are abnormal cerebral vascular morphology and peripheral arteriovenous fistula