Information regarding gender, age, lung cancer type and stage, previous chemotherapy history, body temperature, respiratory rate, pulse, blood pressure, leukocyte count at admission, PNL/leukocyte ratio, PCT, erythrocyte sedimentation rate, CRP values of all patients who were determined to be free of infection, and the CRP values during past admission are presented in Table 2. The gene discussed is CRP; the disease is infection.