AUCs showed that the early postoperative CEA better predicted the prognosis of stage II CRC (AUC > 0.686; 95% CI, 0.657-0.714) and it was significantly better than that using T stage (AUC > 0.621; 95% CI, 0, 592-0.650) and preoperative CEA (AUC > 0.686; 95% CI, 0.657 - 0.714) (Figure 3). The gene discussed is CEACAM5; the disease is colorectal carcinoma.