BACKGROUND: The clinical significance of coexpression of type 1 growth factor receptor (T1GFR) family members remains largely unknown. The objective of the current study was to determine the frequency and the possible prognostic effect of coexpression of HER-1, HER-2, HER-3, and HER-4 by breast carcinoma. METHODS: Tissue microarrays were constructed using clinically annotated formalin-fixed, paraffin-embedded tumor samples from 242 patients with invasive breast carcinomas with a median 15-year follow-up. The levels of TIGFR family members (HER-1-HER-4) were measured by immunohistochemistry. K-means clustering algorithm, as well as univariate (Kaplan-Meier, log-rank test) and multivariate (Cox regression) survival analyses were applied to the data set. RESULTS: Using univariate analysis, expression of HER-1, HER-2, and HER-3, but not HER-4, was significantly associated with decreased patient disease-specific survival (P < 0.05). Kaplan-Meier survival analysis showed that coexpression of >/= 2 of HER-1, HER-2, and HER-3 in any combination was associated with reduced patient disease-specific survival compared with single marker expression or no expression (35% vs. 65% vs. 78% 10-year survival rates, P = 0.001). Using multivariate analysis, expression of >/= 2 of HER-1, HER-2, and HER-3 was independent of lymph node status and tumor size. CONCLUSIONS: In a cohort of patients with breast carcinoma, the authors observed T1GFR family member coexpression (HER-1, HER-2, and HER-3) to have a negative synergistic effect on patient outcome, independent of tumor size or lymph node status. Thus, coexpression of T1GFR family members identified a subset of patients with a poor disease prognosis who may potentially benefit from therapy simultaneously targeting several T1GFR family members. (c) 2005 American Cancer Society.
BACKGROUND: The clinical significance of coexpression of type 1 growth factor receptor (T1GFR) family members remains largely unknown. The objective of the current study was to determine the frequency and the possible prognostic effect of coexpression of HER-1, HER-2, HER-3, and HER-4 by breast carcinoma. METHODS: Tissue microarrays were constructed using clinically annotated formalin-fixed, paraffin-embedded tumor samples from 242 patients with invasive breast carcinomas with a median 15-year follow-up. The levels of TIGFR family members (HER-1-HER-4) were measured by immunohistochemistry. K-means clustering algorithm, as well as univariate (Kaplan-Meier, log-rank test) and multivariate (Cox regression) survival analyses were applied to the data set. RESULTS: Using univariate analysis, expression of HER-1, HER-2, and HER-3, but not HER-4, was significantly associated with decreased patient disease-specific survival (P < 0.05). Kaplan-Meier survival analysis showed that coexpression of >/= 2 of HER-1, HER-2, and HER-3 in any combination was associated with reduced patient disease-specific survival compared with single marker expression or no expression (35% vs. 65% vs. 78% 10-year survival rates, P = 0.001). Using multivariate analysis, expression of >/= 2 of HER-1, HER-2, and HER-3 was independent of lymph node status and tumor size. CONCLUSIONS: In a cohort of patients with breast carcinoma, the authors observed T1GFR family member coexpression (HER-1, HER-2, and HER-3) to have a negative synergistic effect on patient outcome, independent of tumor size or lymph node status. Thus, coexpression of T1GFR family members identified a subset of patients with a poor disease prognosis who may potentially benefit from therapy simultaneously targeting several T1GFR family members. (c) 2005 American Cancer Society.
Authors: Josie Ursini-Siegel; Sean Cory; Dongmei Zuo; William R Hardy; Elton Rexhepaj; Sonya Lam; Babette Schade; Karin Jirstrom; Eva Bjur; Ciriaco A Piccirillo; David Denardo; Lisa M Coussens; Donal J Brennan; William M Gallagher; Morag Park; Tony Pawson; Michael Hallett; William J Muller Journal: Cancer Res Date: 2010-10-05 Impact factor: 12.701
Authors: Rebecca S Muraoka-Cook; Laura S Caskey; Melissa A Sandahl; Debra M Hunter; Carty Husted; Karen E Strunk; Carolyn I Sartor; William A Rearick; Wesley McCall; Magdalene K Sgagias; Kenneth H Cowan; H Shelton Earp Journal: Mol Cell Biol Date: 2006-09 Impact factor: 4.272
Authors: Katharine M Hardy; Brian W Booth; Mary J C Hendrix; David S Salomon; Luigi Strizzi Journal: J Mammary Gland Biol Neoplasia Date: 2010-04-06 Impact factor: 2.673
Authors: Joachim Diessner; Valentin Bruttel; Kathrin Becker; Miriam Pawlik; Roland Stein; Sebastian Häusler; Johannes Dietl; Jörg Wischhusen; Arnd Hönig Journal: Am J Cancer Res Date: 2013-04-03 Impact factor: 6.166