Also, we found there was a tendency that the concentrations of ST2 of patients in the NSTEMI subgroups were higher than in USAP subgroups and controls, and the concentration of ST2 was higher in the USAP subgroup than in controls, which implied that the concentration of ST2 increases with the severity of myocardial ischemia. The gene discussed is IL1RL1; the disease is myocardial ischemia.