n = number of prescriptions; % = percentage; DHP-CCB = dihydropyridine-calcium channel blocker; ACEI = angiotensin‐converting enzyme inhibitor; ARB = angiotensin receptor blocker; TZD = thiazide; BB = β-blockers; IHD = ischemic heart disease; HF = heart failure; HTN = hypertension; edematous conditions = HF, chronic kidney disease, liver failure, glomerulopathy. The gene discussed is ACE; the disease is hypertensive disorder.