This is in accordance with other pro-inflammatory cytokines that were reportedly increased in the peripheral blood of patients with COVID-19, such as the Th-17 inducing cytokine IL-6, IL-10, IL-2 and the Th1 signature cytokines interferon gamma (IFN)-γ and tumor necrosis factor (TNF)-α [38,39]. This evidence concerns the gene TNF and COVID-19.