Malignant Secondary Hypertension is related to fibromuscular dysplasia and renal artery obstruction. An important gene associated with Malignant Secondary Hypertension is AGTR1 (Angiotensin II Receptor Type 1), and among its related pathways/superpathways are Signal Transduction and Response to elevated platelet cytosolic Ca2+. Related phenotypes are homeostasis/metabolism and growth/size/body region