Immunohistochemical biomarkers in patients with early-onset breast carcinoma by tissue microarray

Doo Ho Choi, Sung Kim, David L. Rimm, Darryl Carter, Bruce G. Haffty

Research output: Contribution to journalArticle

Abstract

Young women with breast cancer have a poor prognosis, and the role of biologic markers in young women is not well defined. We investigated the association of estrogen receptor, progesterone receptor, Bcl-2, HER-2/neu, p53, and Ki-67 with clinicopathologic features and outcome in young women with breast cancer. METHODS A cohort of 103 patients with early-onset breast cancer treated with conservative surgery and radiotherapy were entered in this study. Age range was 25-45 years, and median follow-up was 8.7 years. Each of the paraffin-embedded specimens was immunologically stained for six biomarkers expression by a recently developed tissue microarray method. RESULTS The 10-year overall breast relapse-free and distant relapse-free survival rates were 82.7%, 84.6.4%, and 66.7%, respectively, with 14 local relapses and 26 distant metastases among the 103 patients evaluated. Positive expression of estrogen receptor, progesterone receptor, bcl-2, HER-2/neu, p53, and Ki-67 were 42.7%, 48.5%, 35.6%, 28.0%, 36.9%, and 39.7%, respectively. Tumor stage and nodal status were significantly associated with overall survival and distant metastasis-free rate in univariate and multivariate analysis. Progesterone receptor negativity and Ki-67 positivity were associated with distant metastasis. There was no statistically significant correlation between the six biomarkers and local relapse. CONCLUSIONS Progesterone receptor, Ki-67, tumor stage, and nodal status were prognostic factors for distant failure in early-stage breast cancer in young patients. Further studies are needed to find other biologic markers associated with local failure in this group of patients.

Original languageEnglish (US)
Pages (from-to)404-411
Number of pages8
JournalCancer Journal
Volume11
Issue number5
StatePublished - Sep 2005
Externally publishedYes

Keywords

  • Biomarkers
  • Breast carcinoma
  • Tissue microarray
  • Young age

ASJC Scopus subject areas

  • Cancer Research
  • Oncology

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    Choi, D. H., Kim, S., Rimm, D. L., Carter, D., & Haffty, B. G. (2005). Immunohistochemical biomarkers in patients with early-onset breast carcinoma by tissue microarray. Cancer Journal, 11(5), 404-411.