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- W2117546979 abstract "BackgroundWe hypothesized that, among molecular subclasses of breast cancer, p53 status may have a differential predictive value for the efficacy of anthracyclines/alkylating agents-based regimen. We analysed the efficacy of a preoperative combination between 5-fluorouracil, anthracyclines and cyclophosphamide according to both p53 status and molecular classification.Patients and methodsOestrogen receptor (ER), progesterone receptor (PgR), human epidermal growth factor receptor 2 (HER2) expression and p53 status were determined by immunohistochemistry in 293 samples from two different centres. A logistic regression model was used for multivariate analysis of predictors for pathological complete response (pCR).Resultsp53 immunostaining (54%) was associated with high grade (P = 0.002) and ER negativity (P = 0.04). p53 was detected in 59% of triple-negative tumours (ER-/PgR-/HER2-, n = 120 patients). In the overall population, pCR (9.6%) was independently predicted by high tumour grade (P = 0.002) and ER/PgR/HER2 triple negativity (P = 0.0004), but not by p53 status (P = 0.12). p53 immunostaining was associated with a trend for a higher rate of pCR in triple-negative tumours [relative risk (RR) = 2.5, 95% confidence interval (CI) = 0.8–7.5, P = 0.09], but not in non-triple-negative tumours (RR = 0.73, 95% CI = 0.16–3.3, P = 0.69).Conclusionp53 status may have a different predictive value for efficacy of anthracycline/alkylating agents-based regimen in each molecular subclass, a result which may explain the different results reported in literature." @default.
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- W2117546979 date "2008-07-01" @default.
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- W2117546979 title "p53 status and efficacy of primary anthracyclines/alkylating agent-based regimen according to breast cancer molecular classes" @default.
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- W2117546979 doi "https://doi.org/10.1093/annonc/mdn039" @default.
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