We observed that both PBMCs and monocytes had upregulated expression of mRNAs of myeloid markers, including CD14, α-integrins (CD11b and CD11c), FCγ receptors (CD64A), and macrophage scavenger receptors (CD163), as a function of the severity of COVID-19 (Fig. 1A and C). This evidence concerns the gene ITGAM and COVID-19.