In addition to age, race, grade, T stage, N stage, surgery, chemotherapy, CEA, tumor deposits, metastasis to lung, and tumor size, other prognostic factors such as marital status, histologic type, and metastasis to bone were identified to positively affect the overall mortality for sigmoid colon cancer with liver metastasis patients, with hazard ratios ranging from 1.06 to 1.61 (Figure 2, B). Here, CEACAM5 is linked to sigmoid colon cancer.