Abstract
The purpose of this study was to establish a new formula predicting liver metastasis in patients with colorectal cancer (CRC). Nine previously reported predictive markers for liver metastasis and/or prognosis (COX-2, dysadherin, E-cadherin, beta-catenin, Ki-67, p53, laminin5gamma2, matrilysin and MUC-1) were immunohistochemically investigated in 439 consecutive patients with CRC. We tried to determine the combination of molecules which best predicted liver metastasis. A formula for predicting liver metastasis was constructed using a training cohort comprising 150 cases, and applied to a validation cohort comprising 190 cases and another comprising 99 cases from an outside hospital. A combination of dysadherin, E-cadherin and matrilysin was identified to be best for predicting liver metastasis (area under the curve value, 0.807). The predictive formula: 3x dysadherin score [0 for low expression (</=50% of tumor cells positive) or 1 for high expression (>50%)] + 4x E-cadherin score [0 for preserved (>80% of tumor cells positive) or 1 for reduced (</=80%)] + 2x matrilysin score [0 for low expression (</=30% of tumor cells positive) or 1 for high expression (>30%)] was able to discriminate patients with liver metastasis in the trai...Continue Reading
Citations
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