TMPRSS2 and COVID-19: In their analysis on the association between rs12329760 in TMPRSS2 and the risk of severe COVID-19, Monticelli et al. (2021[35]) reported a protective effect of the minor allele A. Ravikanth et al. (2021[43]) announced similar findings, since they noticed a lower frequency of the minor allele in asymptomatic SARS-CoV-2-infected persons compared to the most severely affected COVID-19 patients.