TNNI3 and acute myocardial infarction: While both cTnI and cTnT may be used for the diagnosis of acute myocardial infarction (a condition that may need to be differentiated from ICI myocarditis), some studies have indicated that cTnI may be more specific than cTnT, which may be elevated in patients with immune-related myositis [27,28,29].