The AUC for the CEA was 0.785 (95% CI, 0.736-0.834, Figure 4A), which was notably smaller than that for platelet ITGA2B mRNA (p < 0.001), implying that platelet ITGA2B exceeded CEA and SELP in distinguishing the patients with NSCLC from controls. Here, CEACAM5 is linked to non-small cell lung carcinoma.