One male patient with an anteroseptal myocardial infarction did not display elevated hs-cTnT (10 ng/L) above the 99th percentile URL of the assay (14 ng/L), whereas the hs-cTnI test conducted in the acute cardiac outpatient unit was elevated with a value of 48 ng/L (a 99th percentile URL of 27.5 ng/L). The gene discussed is TNNT2; the disease is myocardial infarction.