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- W2082433570 abstract "The aim of this study was to evaluate p53 expression, determined by immunohistochemistry, in 151 infiltrating ductal breast carcinomas with negative axillary lymph nodes, and to determine whether p53 can be considered as an independent prognostic value for overall and disease-free survival. A monoclonal antibody (DO-7) that reacts with an epitope on the N terminal portion of the human protein p53 was used to detect p53 in paraffin-embedded sections, utilising a standard avidin-biotin-peroxidase complex (ABC) technique with a microwave oven antigen retrieval. Overexpression of p53 (more than 50% of stained cells) was found in 45 cases (30%). Forty-five cases were negative and occasionally or moderately stained cells were present in 61 cases. p53 protein overexpression was significantly associated with high histological grade and tumour necrosis, high MIB-1 value (MIB-1 > 30%) and negative oestrogen receptor status. Univariate analysis (log-rank) showed a shorter overall survival (P = 0.003) in patients with high tumour p53 positivity. This statistical significance was also seen on multivariate analysis (Cox's logistic regression, P = 0.004). p53 protein overexpression is an independent prognostic marker in node-negative breast carcinoma for overall survival and should be used with other prognostic factors." @default.
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- W2082433570 date "2007-09-01" @default.
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- W2082433570 title "O-89 The effect of HER-2 overexpression on survival in early breast cancer" @default.
- W2082433570 doi "https://doi.org/10.1016/s1359-6349(07)71779-2" @default.
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