HGF and COVID-19: Patients with severe COVID-19 have been reported to exhibit elevated levels of IL-1β, IL-1Ra, IL-2, IL-7, IL-8, IL-9, IL-12, IL-13, IL-17, IFN-γ, granulocyte colony-stimulating factor (GCSF), macrophage colony-stimulating factor (MCSF), hepatocyte growth factor (HGF), MIP-1α, IP-10, MCP-1, MCP-3, and TNF-α [28,113,114], compared to healthy controls.