Analysis of TSLC1 Expression in Colorectal Cancer Specimens by Immunohistochemistry

The tumor suppressor in lung cancer-1 (TSLC1) is a tumor-suppressor gene. We evaluated the correlation between TSLC1 expression and clinicopathological characteristics of colorectal cancer patients by comparing primary colorectal cancer and adjacent normal colorectal tissues. TSLC1 expression was evaluated in 100 pairs of primary colorectal cancerous and corresponding normal colorectal tissues using immunohistochemical staining on paraffin-embedded sections. The correlation between immunohistochemical findings and clinicopathological factors was then investigated. Age, gender, and clinicopathological presentation of patients were also noted. TSLC1 was expressed in all tissues. A 71%- down regulation of TSLC1 was colorectal cancer specimens compared to the matched normal tissues. There were statistically significant correlations between TSLC1 expression and stage, location, and lymph node metastasis. TSLC1 expression may be a favorable biologic marker and a useful prognostic indicator in patients with colorectal cancer.