Dynamic monitoring of serum tumor markers in predicting recurrence after radical gastrectomy for gastric cancer

Figure 1 Receiver operating characteristic curves for predicting postoperative recurrence after radical gastrectomy. The area under the curve (AUC) values for individual tumor markers were 0742 for carcinoembryonic antigen, 0.718 for carbohydrate antigen 19-9, 0.756 for carbohydrate antigen 72-4, and 0.738 for carbohydrate antigen 125. The combined model incorporating all four markers demonstrated superior predictive performance with an AUC of 0.825. AUC: Aea under the curve; CEA: Carcinoembryonic antigen; CA19-9: Carbohydrate antigen 19-9; CA72-4: Carbohydrate antigen 72-4; CA125: Carbohydrate antigen 125.