In COVID-19 patients, high levels of TNF-α, IL-1β, IL-4, IL-6, IL-10, IP-10, MCP-1, and MIP-1A have been detected [7,8,44], and particularly, high IL-6 concentrations are positively correlated with the severity of the disease [6,45]. The gene discussed is CXCL10; the disease is COVID-19.