In addition to these genetic biomarkers, many blood biomarkers have been shown to predict disease severity and mortality in COVID-19, such as C-reactive protein, procalcitonin, D-dimer, interleukin-6, lactate dehydrogenase, ferritin, plasma Gas6, lymphopenia, and thrombocytopenia (16–19), with many previously investigated in sepsis (20). The gene discussed is IL6; the disease is COVID-19.