TNNI3 and COVID-19: Among 138 patients treated for COVID-19 (admitted to Zhongnan Hospital of Wuhan University during January 2020), 33 patients had either acute myocardial injury or cardiac arrhythmia, as suggested by their elevated cTnI level of 0.011 ng/mL versus 0.0051 ng/mL for those who were treated in non-ICU [82].