Chronic Intestinal Vascular Insufficiency, also known as chronic mesenteric ischemia, is related to median arcuate ligament syndrome and acalculous cholecystitis, and has symptoms including abdominal angina An important gene associated with Chronic Intestinal Vascular Insufficiency is ATP12A (ATPase H+/K+ Transporting Non-Gastric Alpha2 Subunit). The drugs Histamine and Butyric Acid have been mentioned in the context of this disorder. Affiliated tissues include colon and kidney.