The pathological finding was well to moderately differentiated tubular adenocarcinoma, and immunohistochemistry showed that tumor cells were weakly positive for cytokeratin (CK) 7 and positive for CK20 and Caudal-type homeobox 2 (CDX2), consistent with liver metastases from sigmoid colon cancer. The gene discussed is CDX2; the disease is gastric tubular adenocarcinoma.