Studies have demonstrated that high level expression of inflammatory cytokines, such as IL-6, of IL-1β, interferon (IFN)-γ, interferon gamma-induced protein 10 (IP-10), TNF-α, and the chemokine, monocyte chemoattractant protein 1 (MCP-1) can correlate with the severity of COVID-19 symptoms (65–68). This evidence concerns the gene CCL2 and COVID-19.