In a single-center, retrospective cohort study including 188 patients with COVID-19 in Wuhan, China, conducted to explore whether heart injury occurred during COVID-19 on admission and later increased mortality, approximately 11.2% of patients had high-sensitivity cardiac troponin I (hs-TnI) exceeding the clinical upper normal limit on admission. The gene discussed is TNNI3; the disease is COVID-19.