alexa Impact of oophorectomy on cancer incidence and mortality in women with a BRCA1 or BRCA2 mutation.
Pathology

Pathology

Journal of Medical & Surgical Pathology

Author(s): Finch AP, Lubinski J, Mller P, Singer CF, Karlan B,

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Abstract PURPOSE: The purposes of this study were to estimate the reduction in risk of ovarian, fallopian tube, or peritoneal cancer in women with a BRCA1 or BRCA2 mutation after oophorectomy, by age of oophorectomy; to estimate the impact of prophylactic oophorectomy on all-cause mortality; and to estimate 5-year survival associated with clinically detected ovarian, occult, and peritoneal cancers diagnosed in the cohort. PATIENTS AND METHODS: Women with a BRCA1 or BRCA2 mutation were identified from an international registry; 5,783 women completed a baseline questionnaire and ≥ one follow-up questionnaires. Women were observed until either diagnosis of ovarian, fallopian tube, or peritoneal cancer, death, or date of most recent follow-up. Hazard ratios (HRs) for cancer incidence and all-cause mortality associated with oophorectomy were evaluated using time-dependent survival analyses. RESULTS: After an average follow-up period of 5.6 years, 186 women developed either ovarian (n = 132), fallopian (n = 22), or peritoneal (n = 32) cancer, of whom 68 have died. HR for ovarian, fallopian, or peritoneal cancer associated with bilateral oophorectomy was 0.20 (95\% CI, 0.13 to 0.30; P < .001). Among women who had no history of cancer at baseline, HR for all-cause mortality to age 70 years associated with an oophorectomy was 0.23 (95\% CI, 0.13 to 0.39; P < .001). CONCLUSION: Preventive oophorectomy was associated with an 80\% reduction in the risk of ovarian, fallopian tube, or peritoneal cancer in BRCA1 or BRCA2 carriers and a 77\% reduction in all-cause mortality. © 2014 by American Society of Clinical Oncology.
This article was published in J Clin Oncol and referenced in Journal of Medical & Surgical Pathology

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