A meta-analysis (comprising nine studies with 1426 patients) by Aziz et al. [37] reported a threefold increase in the mean serum concentration of IL-6 (56.8; 41.4–72.3 pg/mL) for patients with severe COVID-19 compared with the 17.3 pg/mL concentration in non-severe patients. The gene discussed is IL6; the disease is COVID-19.