MMP28 and myocardial infarction: Our main findings are as follows: (1) MMP-28 is elevated to varying degrees in patients with AMI; (2) plasma MMP-28 level correlates with the GRACE score in patients with AMI; and (3) MMP-28 level correlates with cardiovascular events and cardiovascular deaths during the hospitalization of AMI patients and within 30 days after discharge and can be considered a short-term prognosis predictor for patients with myocardial infarction.