MYL3 and myocardial infarction: In addition, when serum levels of cMLC-1 and creatine kinase (CK) were measured in serial samples from 49 patients with acute myocardial infarction, the results suggested that serum cMLC-1 is a better marker than CK in predicting LVEF changes (18).Thus, we investigated the possibility of cMLC-1 as a potential biomarker for TIC in mice.