The Relationship Between Expression of EpCAM Cancer Stem Cell Marker with Histopathological Grading, Lymphovascular Invasion, and Metastases in Colorectal Adenocarcinoma.

OBJECTIVE

The aim of this study was to analyze the expression of EpCAM in the colorectal adenocarcinoma.

MATERIAL AND METHODS

This study used a cross-sectional design. One hundred and thirteen paraffin embedded block of Colorectal Adenocarcinoma were assessed using anti-EpCAM/Epithelial Specific Antigen (Ber-EP4) mouse monoclonal antibody and their expression were performed using Olympus CX-43 light microscope. The relationship between EpCAM expression with histopathological grade of colorectal adenocarcinoma, lymphovascular invasion and metastases ability were statistically analyzed by Chi-Square tests and presented in tables using SPSS 18.

RESULTS

From 113 samples, in samples with lymphovascular invasion there were 37 samples (32.7%) with strong expression, while those with weak expression were 19 samples (16.8%). There were 39 samples with metastases and strong expression of EpCAM (34.5%), while 21 samples with weak expression (18.6%). There was a significant relationship between the expression of cancer stem cell marker EpCAM with lymphovascular invasion and colorectal adenocarcinoma metastases (p = 0.002), but there was no significant relationship with histopathological grade (p = 0.574).

CONCLUSION

The EpCAM expression can be used as a prognostic factor, and can be considered as a predictive or an option for target therapy in colorectal adenocarcinoma.