CEACAM5 and gastric cancer: The results of the study conducted by Lin JX et al. revealed that [19] preoperative CEA combined with CA19–9 level could be used as an independent predictor of prognosis for patients with resectable gastric cancer, and the modified TNM staging system with preoperative CEA/CA19–9 levels could more accurately predict the prognosis of patients with stage III gastric cancer after D2 radical resection.