Pathology and Microbiology
Objective: To assess the independent and interdependent prognostic value of epidermal growth factor receptor (EGFR) in carcinoma of breast in female population. The Type I family of growth factor receptors includes epidermal growth factor receptor (EGFR also known as EGFRI).
Methods: The expression of EGFR protein was analysed immunohistochemically on 315 tumour specimens of infiltrating ductal carcinoma of breast. These patients also had axillary lymph nodes sampling.
Results: Overexpression and/or amplification of EGFR was observed in 70 (22.00%) tumours. Eleven (16%) were grade I, 43 (61%) grade II and 16 (23%) grade Ill tumours. Axillary lymph node metastasis had significant correlation with intensified positivity of EGFR (p< 0.05). Significant number of EGFR positive patients developed local recurrence and distant metastases to brain, liver and bone (p< 0.05). EGFR positivity showed significant correlation with the disease free and overall survival (p< 0.05). At a median follow-up of48 (4 years) months in EGFR positive patients, the overall survival was 3.39 years and disease free survival was 2.86 years. EGFR negative tumour patients showed a better survival. In this group the overall survival was 4.62 years and the disease free survival was 4 years.
Conclusion: EGFR analysis can be a useful indicator for the selection of patients who are at the high risk, for hormonal therapy decisions and can be useful as a target for new treatment modalities.
Journal of Pakistan Medical Association
Aziz, S. A.,
Rahbar, M. H.,
(2002). Epidermal Growth Factor Receptor (EGFR) as a Prognostic Marker: an Immunohistochemical Study on 315 Consecutive Breast Carcinoma Patients. Journal of Pakistan Medical Association, 52(3), 104-110.
Available at: http://ecommons.aku.edu/pakistan_fhs_mc_pathol_microbiol/267