The guidelines issued by the American Heart Association and the American College of Cardiology in 2014 listed the drugs that should be adhered to after discharge from acute myocardial infarction, including aspirin enteric-coated tablets, P2Y2 receptor inhibitors, angiotensin-converting enzyme inhibitors/angiotensin II receptor blockers, beta-blockers, and statins that are the best drug therapy for patients with acute myocardial infarction. The gene discussed is ACE; the disease is acute myocardial infarction.