期刊
BRITISH JOURNAL OF CANCER
卷 120, 期 4, 页码 398-403出版社
NATURE PUBLISHING GROUP
DOI: 10.1038/s41416-019-0376-y
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- Canadian Breast Cancer Foundation (Ontario Chapter)
BACKGROUND: To evaluate the predictors of mortality, including ER status, in women with a BRCA2 mutation and breast cancer. METHODS: Eligible participants were identified from within two longitudinal cohorts. These patients were selected because they were diagnosed with breast cancer between 1975 and 2015 and carried a BRCA2 mutation. Data were abstracted from the medical record and pathology report. We analysed the effects of ER status and other variables on breast cancer specific survival using a Cox proportional hazards model. RESULTS: Three hundred ninety women with breast cancer and a BRCA2 mutation were included in the analysis. The mean followup time was 12.3 years (range 1-39 years) and 89 subjects died (22.8%). In the multivariate analysis, women with ER-positive tumours were more likely to die than women with ER-negative tumours (HR 2.08, 95% CI 0.99-4.36, p = 0.05), and this was of borderline significance. For the 233 women with ER-positive tumours the 20-year survival rate was 62.2%, compared to 83.7% for 58 women with ER-negative tumours (p = 0.03). CONCLUSIONS: The majority of women with a BRCA2 mutation present with ER-positive breast cancer, and for these women, prognosis may be worse than for BRCA2 carriers with ER-negative breast cancer.
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