TMPRSS2 and infection: The attention of the scientific literature towards the coronavirus disease COVID-19 pandemic has clarified many aspects of infection on target cells, affirming the key role of the angiotensin converting enzyme 2 (ACE2) receptor and the transmembrane protease serine 2 (TMPRSS2) co-receptor in tropism and pathogenesis (Sajuthi et al., 2020; Zipeto et al., 2020).