RAB1B and infection: In this context, RAB1B has been identified and characterizedas a host factor crucial for the trafficking and maturation of theS protein of SARS-CoV-2 after its synthesis in the endoplasmic reticulum,regulating the subcellular distribution, excision, and redistributionof the S spicule after infection,38 whichis consistent with the fact that we found greater expression of RAB1Bin the group with the worst clinical course.