TNNI3 and angina pectoris: Additionally, miR-21 was shown to be a novel biomarker that was predictive of LV remodeling after AMI, which correlated with several traditional markers of AMI, including CK-MB, creatine kinase (CK), and cardiac troponin I, with comparable diagnostic accuracy, and also as a potential diagnostic biomarker of stable and unstable angina patients [32,33].