They noted high levels of Interleukin (IL)-1β, IL-6, Interferon (IFN)-γ, C-X-C motif chemokine ligand 10 (CXCL10), and C–C motif chemokine ligand 2 (CCL2) in COVID-19 patients as signs of T-helper-1 cell activation. The gene discussed is CXCL10; the disease is COVID-19.