According to our results, although AUC values of TP73‐AS1 and CRNDE were relatively lower in patients with stage I (0.800 and 0.801) than stage II‐IIIA (0.839 and 0.837, and 0.871 and 0.861, respectively; Figure S3C,D), the AUCs of the two lncRNAs were still higher in stage I patients with NSCLC than those of CEA and CYFRA21‐1 in stage I‐IIIA patients with NSLC in training (0.769 and 0.686; Figure 2E,F) and testing (0.733 and 0.648; Figure 3C,D) sets. This evidence concerns the gene TP73 and non-small cell lung carcinoma.