In an independent external sequencing sample cohort, these genes also performed impressively, with the AUC value for CBLC at 0.800, while the AUC values for FABP4, GDF10, and LTBP4 all reached 1.000 (Figure 7D), further validating their potential as diagnostic markers for lung cancer. The gene discussed is FABP4; the disease is lung carcinoma.