Association of HER-2/neu overexpression with the number of involved axillary lymph nodes in hormone receptor positive breast cancer patients

Autor: Fusun, Tokatli, Tokatli, Fusun, Semsi, Altaner, Altaner, Semsi, Cem, Uzal, Uzal, Cem, Mevlut, Ture, Ture, Mevlut, Zafer, Kocak, Kocak, Zafer, Kazim, Uygun, Uygun, Kazim, Selcuk, Bilgi, Bilgi, Selcuk
Rok vydání: 2005
Předmět:
Zdroj: Experimental oncology. 27(2)
ISSN: 1812-9269
Popis: To evaluate the prognostic significance of HER-2/neu overexpression in hormone receptor and axillary lymph node positive breast cancer patients treated in a single institution.Paraffin-embedded primary breast cancers from 40 patients with invasive ductal carcinoma were studied immunohistochemically. HER-2/neu staining was classified as negative (0, 1+), weak/moderate positive (2+), or moderate/strong positive (3+) and was assessed for effectiveness as a predictor of outcome in univariate and Cox model multivariate analyses.20% of patients were positive for HER-2/neu. Significant associations were observed between HER-2/neu and increasing number of involved nodes (p = 0.014), p53 positivity (p = 0.039), the presence of vascular invasion (p = 0.029) and metastases (p = 0.01). Multivariate analysis demonstrated that HER-2/neu overexpression (p = 0.016) and age (p = 0.005) were independent predictors for disease-free survival (DFS) where the number of involved nodes (p = 0.032) was shown to be independent predictor for overall survival. In the HER-2/neu positively stained tumors, significant number of patients developed distant metastases than the patients with HER-2/neu negatively stained tumors (87.5% vs 34.4%, p = 0.01).For node positive patients, HER-2/neu overexpression was a significant predictor of DFS.
Databáze: OpenAIRE