p53 expression as a prognostic marker in inflammatory breast cancer

Ana M. Gonzalez-Angulo, Nour Sneige, Aman U. Buzdar, Vicente Valero, Shu Wan Kau, Kristine Broglio, Yuko Yamamura, Gabriel N. Hortobagyi, Massimo Cristofanilli*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

Purpose: Inflammatory breast cancer (IBC) is a rare and aggressive form of breast cancer. Nuclear expression of p53 protein in breast cancer correlates with more aggressive tumors. We retrospectively analyze the expression of p53 as a prognostic marker to predict pathological complete response and survival in patients with IBC. Experimental Design: Fifty-nine patients with IBC were treated from January 1994 to April 2000. Forty-eight patients were included. Diagnostic core biopsies were taken before treatment was started. Expression of hormone receptors and p53 was determined by immunohistochemistry. All patients received an anthracycline-based regimen preoperatively, 22 patients (46%) also received paclitaxel. Forty-four patients (92%) achieved an objective clinical response and underwent mastectomies. Results: Median age at diagnosis was 48 years. Thirty patients (63%) had hormone receptor-negative tumors. Twenty-eight patients (58%) had p53-positive tumors, and 20 patients (42%) had p53-negative tumors. Nine patients (19%) achieved a pathological complete response. At a median follow-up of 77 months, 28 recurrences (58%) and 26 deaths (54%) had occurred. Patients with p53-positive tumors were younger (P = 0.02) and tended to have lower 5-year progression-free survival rates (35% versus 55%; P = 0.3) and overall survival rates (44% versus 54%; P = 0.4). Conclusions: This retrospective analysis demonstrates that nuclear p53 protein expression may represent an adverse prognostic marker in IBC and may provide a valuable tool for selecting treatment for this aggressive disease.

Original languageEnglish (US)
Pages (from-to)6215-6221
Number of pages7
JournalClinical Cancer Research
Volume10
Issue number18 I
DOIs
StatePublished - Sep 15 2004

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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