This is amore sensitive and specific cardiac biomarker than cTnT and CK-MB, and it has a higher diagnostic effectiveness for detecting early acute myocardial infarction (AMI).The case-control study enrolled 220 participants (110 myocardial infarction patients as cases and 110 healthy subjects as control) > 18 years of either sex afterethical clearance and informed consent form. The gene discussed is TNNT2; the disease is myocardial infarction.