NLR, CEA, RDW-SD, LDH, and CYFRA211 were combined for diagnosis, and the cutoff value was 0.122 (sensitivity: 0.826; specificity: 0.755; AUC: 0.844), which can slightly enhance the diagnostic performance of NSCLC and was associated with the prognosis (P ≤ 0.001) (Figures 2(b) and 2(c)). The gene discussed is CEACAM5; the disease is non-small cell lung carcinoma.