For determining the value of FTO and CEA, as well as CYFRA21-1, in diagnosing NSCLC, we drew corresponding ROC curves and found they were all highly favorable diagnostic indexes of clinical NSCLC because their areas under the curves (AUCs) were all larger than 0.8 in diagnosing NSCLC (Figures 2(a)–2(c)). The gene discussed is CEACAM5; the disease is non-small cell lung carcinoma.