Transmembrane prostease serine 11a (TMPRSS11a), Human airway trypsin-like protease (HAT), Trypsin, Thermolysin and Elastase can induce the fusion of SARS-CoV and cell membrane on the cell surface and promote virus infection, so it is speculated that they may have similar functions for SARS-CoV-2 (55). This evidence concerns the gene TMPRSS11D and viral infectious disease.