Cytokine dysregulation (particularly transforming growth factor-β (TGF-β), Tumor Necrosis Factor (TNF)-α, Interleukin (IL)-1β, Interferon (IFN)-γ, IL-6, and IL-10) are known to be associated with psychiatric disorders [35,137,138,139,140,141,142], and have been shown to be elevated in patients with COVID-19. The gene discussed is IFNG; the disease is COVID-19.