Otherwise, Möhlendick et al., (2021) [31] have identified the ACE2 G allele and GG genotype as a genetic risk factor for SARS-CoV-2 infection and COVID-19 mortality, evaluating 297 SARS-CoV-2-positive and 253 SARS-CoV-2-negative tested patients in the German population. Here, ACE2 is linked to COVID-19.