GAPDH and COVID-19: In addition, there were 14 commonly upregulated genes (S100A8, IFI44L, IFI44, CXCL8, CCR1, PLSCR1, EPSTI1, FPR1, OAS2, IL1RN, TYMP, BCL2A1, GAPDH, and OAS3) in severe-Covid-19 BAL cells and PBMCs, and one gene in common (C1QC) for BAL and PBMCs form mild cases of COVID-19.