Hubungan BRAF V600E dan EGFR dengan Metastasis ke Kelenjar Getah Bening pada Adenokarsinoma Kolorektal

Abstract

Colorectal adenocarcinoma is an epithelial malignant tumor with glandular differentiation. Lymph node metastasis affects the prognosis and management of colorectal carcinoma patients. In this study, association of BRAF V600E and EGFR with metastasis of the lymph nodes was investigated. This was a cross sectional study with unpaired categorical analysis of colorectal adenocarcinoma obtained from archival paraffin blocks from consecutively selected samples. The blocks were stained by BRAF V600E and EGFR antibodies at the Department of Anatomical Pathology, Faculty of Medicine, Universitas Padjadjaran/Dr. Hasan Sadikin General Hospital during the period of February to June 2014. There was no association between positive BRAF V600E immunoexpression and lymph node metastasis, p=0.269 (p>0.05, chi-square test). Similarly, there was no association between positive EGFR immunoexpression and lymph node metastasis, p=0.713 (p>0.05, chi-square test). Positive BRAF V600E immunoexpresion and positive EGFR immunoexpression also had no association with lymph node metastasis, p=0.427 (Fisher Exact test). BRAF and EGFR may play a role in the epithelial mesenchymal transition to increase cell migration and invasion. However, in colorectal adenocarcinoma, BRAF V600E and EGFR were not associated with lymph node metastasis. In conclusions, positive BRAF V600E immunoexpression and positive EGFR immunoexpression in colorectal adenocarcinoma should not be used as markers for the metastazing potentials of colorectal adenocarcinoma tumors.

Keywords

• Adenocarcinoma
• BRAF V600E
• colorectal
• EGFR
• lymph node