After adjusting for age, sex, and comorbidities, the increased CK-MB (adjusted HR, 4.39 [95% CI, 2.94–6.56]; P<0.001), hs-cTnI (adjusted HR, 6.95 [95% CI, 4.48–10.8]; P<0.001), CK (adjusted HR, 3.45 [95% CI, 2.43–4.90]; P<0.001), (NT-pro)BNP (adjusted HR, 4.88 [95% CI, 3.31–7.20]; P<0.001), and MYO (adjusted HR, 4.20 [95% CI, 2.94–6.00]; P<0.001) remained to be significantly associated with higher risk of all-cause mortality of COVID-19 in this subcohort. Here, TNNI3 is linked to COVID-19.