ACE2 and COVID-19: A recent study found that ACE2 is expressed in human pericytes and heart failure increases ACE2 expression [119], suggesting that SARS-CoV-2 could predispose COVID-19 patients to cardiac injuries due to loss of cardio-protective function of ACE2 or patients with heart failure have a higher risk of SARS-CoV-2 infection and subsequent cardiac damages.