Currently, multiple biomarkers in COVID-19 have been identified, such as leukocytes, C-reactive protein (CRP), procalcitonin (PCT), lactate dehydrogenase (LDH), ferritin, and cytokines (IL-2R, IL-6, IL-8, IL-10, and TNF-α) [80]. The gene discussed is IL6; the disease is COVID-19.