P53 alterations show significant correlation with gene amplification and high S-phase index in breast cancer

M. Cervantes, H. Zhou, A. Sahin, K. Dhingra, V. Valero, N. Ordonez, A. El-Naggar, K. Hess, A. Glassman, S. Sen

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

Correlation of p53 gene/protein alterations with incidence of oncogene amplification, a potential marker of prognosis, was evaluated in 26 fresh breast cancer samples. p53 gene was analyzed by SSCP and DNA sequencing while p53 protein status was investigated by immunohistochemistry (IH). Amplification of c-erbB2/neu, c-myc, N-ras, int-2, hst, PRAD-1 and EGFR genes was studied by slot blot and in situ hybridizations. p53 alterations were found in 31% cases by SSCP and 42% by IH; gene amplification was detected in 27% cases. p53 gene alterations correlated significantly with gene amplification (p = 0.006) and also with higher S-phase index (p = 0.026), aneuploidy (p = 0.026) and negative progesterone receptor status (p = 0.043).

Original languageEnglish (US)
Pages (from-to)955-962
Number of pages8
JournalInternational journal of oncology
Volume6
Issue number5
StatePublished - 1995

Keywords

  • Breast cancer
  • Flow cytometry
  • Oncogenes
  • p53

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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