In a study on lymphocytic myocarditis and ICIs, PD-L1 in normal myocardial was very low at baseline, but PD-L1 in lymphocytic myocarditis (30), PD-L1 in MI (25), and PD-L1 expression after cardiac ischemia-reperfusion injury (32). Here, CD274 is linked to myocardial infarction.