The Beleford Lab studies underlying changes in molecular signaling that cause vascular malformations (abnormal development of blood vessels) in Hereditary Hemorrhagic Telangiectasia and other genetic vascular conditions. Hereditary Hemorrhagic Telangiectasia (HHT) is a rare Mendelian vascular condition that is characterized by arteriovenous malformations (AVMs), direct connections between arteries and veins without intervening capillary beds.