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Abstract Title:

Prospective evaluation of alcohol consumption and the risk of breast cancer in BRCA1 and BRCA2 mutation carriers.

Abstract Source:

Breast Cancer Res Treat. 2015 Jun ;151(2):435-41. Epub 2015 May 3. PMID: 25935583

Abstract Author(s):

Cezary Cybulski, Jan Lubinski, Tomasz Huzarski, Henry T Lynch, Susan Armel Randall, Susan L Neuhausen, Leigha Senter, Susan Friedman, Peter Ainsworth, Christian Singer, William D Foulkes, Steven A Narod, Ping Sun, Joanne Kotsopoulos

Article Affiliation:

Cezary Cybulski

Abstract:

Given the adverse effect of alcohol in the development of breast cancer among women in the general population, we evaluated whether a similar association exists among women with a BRCA1 or BRCA2 mutation. Information regarding baseline daily alcohol consumption was abstracted from a research questionnaire for 3067 BRCA mutation carriers enrolled in a prospective cohort study. Women were followed biennially until the date of the last follow-up questionnaire, date of breast cancer diagnosis, date of prophylactic bilateral mastectomy, or date of death. Cox proportional hazards models were used to estimate relative risks (RRs) and 95 % confidence intervals (CIs) for invasive breast cancer associated with alcohol consumed at or prior to completion of the baseline questionnaire. After a mean of 5.4 years of follow-up, we observed 259 incident cases of primary invasive breast cancer. Compared with non-users, the adjusted RRs were 1.06 (95 % CI 0.78-1.44) for ever use and 1.08 (0.79-1.47) for current alcohol use. For women in the highest versus lowest quintile of cumulative alcohol consumption, the RR was 0.94 (95 % CI 0.63-1.40; P trend = 0.65). Our findings suggest that alcohol consumption is not a risk factor for breast cancer among women with a BRCA1 or BRCA2 mutation.

Study Type : Human Study

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Sayer Ji
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