TNNI3 and myocarditis: Concerning severe myocarditis and non‐severe myocarditis groups, the ROC analysis demonstrated an AUC of 0.765 for cTnI (95% CI: 0.601 to 0.929, p = 0.013) (Figure 2B) and 0.773 for NLR (95% CI: 0.597 to 0.948, p = 0.016) (Figure 2C).