This retrospective clinical study aimed to differentiate infectious fever from tumor fever (TF) and assess outcomes in non-neutropenic lung cancer patients (NNLCPs) by evaluating PCT, CRP, and NLR as markers of inflammation.2 The study included 588 febrile NNLCPs, of which 311 had bacterial infections, and 277 had TF. The gene discussed is CRP; the disease is lung carcinoma.