TNNI3 and COVID-19: In addition, some severe COVID‐19 patients display higher levels of cardiac troponin I (cTnI), N‐terminal pro‐B‐type natriuretic peptide (NT‐proBNP) and creatine kinase‐MB (CK‐MB), which collectively demonstrates that SARS‐CoV‐2 aggravates heart injury.24, 25, 26, 27