LncRNA Miat is susceptible to a variety of harmful factors, such as angiotensin II, isoproterenol, hypoxia and infection; Miat is anomaly overexpressed in serum, plasma, blood cells and myocardial tissues under a variety of cardiovascular conditions including myocardial infarction, cardiac hypertrophy and atrial fibrillation [36, 63, 73]. The gene discussed is AGT; the disease is myocardial infarction.