Infarct size has been found to be one of the most important determinants of ventricular remodeling.[28] Therefore, the expression of PIK3C2A gene can only be used to predict the risk of AMI, but cannot be used to predict the degree of coronary artery stenosis, the size of myocardial infarction, and even the prognosis. The gene discussed is PIK3C2A; the disease is myocardial infarction.