The levels of interleukin (IL)-1α, IL-1β, IL-7, IL-8, IL-9, IL-10, granulocyte-macrophage colony stimulating factor, interferon gamma (IFN-γ), fibroblast growth factor, granulocyte-colony stimulating factor (G-CSF), IFN-γ-inducible protein (IP10), macrophage inflammatory protein 1 alpha (MIP1A), platelet-derived growth factor, monocyte chemoattractant protein (MCP1), vascular endothelial growth factor, and TNF-α of inflammatory factors are increased in patients with COVID-19 [22]. This evidence concerns the gene IFNG and COVID-19.