Finally, only recently an overlapping set of proteins (that is, in particular, IL-1α, IL-6, CCL2/MCP-1, MMP9, ICAM-1, PAI-1/SERPINE1, TIMP-1 and TNF-α) and processes (that is, inflammation, coagulation, complement activation, adhesion and senescence) were implicated in COVID-19 pathogenesis, see (Lee et al. 2021) and Box 1. This evidence concerns the gene CCL2 and COVID-19.