The inflammatory and immune responses triggered by COVID-19 involve various cytokines and immune cells, including but not limited to interleukin (IL)-6, tumor necrosis factor-alpha (TNF-α), IL-1β, IL-8, IL-10, IL-12, IL-17, IL-23, and interferon-gamma (IFN-γ) [26–29]. Here, IFNG is linked to COVID-19.