In the TCGA cohort, the AUC values ​​of CBLC, FABP4, GDF10, and LTBP4 genes were 0.982, 0.997, 0.980, and 0.983, respectively (Figure 7C), indicating that these genes have a high diagnostic efficiency in distinguishing lung cancer samples from normal control groups. The gene discussed is FABP4; the disease is lung cancer.