TNNT2 and heart failure: The ROC curve analysis reveals an area under the curve (AUC) of 0.739 for cTnT levels in predicting patients with recurrent angina with a sensitivity of 47.37% and a specificity of 97.56%, with an AUC of 0.739 (95% CI: 0.609-0.844). The admission cTnT levels above 1.9 ng/mL were used to predict heart failure in AMI patients with an AUROC of 0.702 (Table 4).