TNNI3 and myocardial infarction: Elevated blood levels of cardiac troponin (cTn), of the cTnI and cTnT subtypes (also known as TNNI3 and TNNT2, respectively), indicate cardiomyocyte injury and cell death, and are used in the clinic as an indicator of myocardial infarction (Mishra et al., 2019; Reichlin et al., 2011; Thygesen et al., 2019).