Predictive values of triglycerides, aspartate aminotransferase (AST), D‐dimer, interleukin 6 (IL‐6), absolute leucocyte count (ALC), neutrophils, neutrophil‐to‐lymphocyte ratio (NLR) and platelet‐to‐lymphocyte ratio (PLR) associated with COVID‐19 severity or mortality according to ROC analysis. The gene discussed is IL6; the disease is COVID-19.