CEACAM5 and non-small cell lung carcinoma: The results revealed that high plasma TP73‐AS1 and CRNDE levels, but not high serum CEA and CYFRA21‐1 levels, were independent predictive factors of poor TFS in patients with NSCLC (p = 0.006 for TP73‐AS1; p = 0.012 for CRNDE; Table S9).