TMPRSS2 and COVID-19: Since the early days of the pandemic coronavirus disease 2019 (COVID-19) started from the Chinese city of Wuhan, Hubei province, in December 2019, many reports highlighted the crucial role of transmembrane serine protease 2 (TMPRSS2) in the spread and progression of the viral infection (Hoffmann et al., 2020; Sungnak et al., 2020).