ACE2 and COVID-19: In this review, we compiled and analyzed the current evidence on therapeutics under investigation for COVID-19, using the following keywords: COVID-19, SARS-CoV-2, SARS, MERS, hydroxychloroquine, azithromycin, lopinavir, ritonavir, remdesivir, oseltamivir, amantadine, colchicine, corticosteroids, convalescent plasma, anticoagulation, mortality, recombinant, angiotensin, tocilizumab, and ACE2.