Body mass index, carcinoembryonic antigen (CEA), carbohydrate antigen 19-9, tumor marker CA72-4 (CA72-4), cytokeratin-7 (CK-7), CTC count, and neutrophil-to-lymphocyte ratio (P < .2) are risk factors for liver metastasis after radical resection of colorectal cancer. Here, KRT7 is linked to colorectal cancer.