Risk-reducing salpingo-oophorectomy and prophylactic mastectomy among BRCA mutation “previvors.”

Abstract

1518 Background: We prospectively evaluated the timing and uptake of risk-reducing surgery in a cohort of female BRCA mutation carriers that have no personal cancer history (“previvors”). Methods: Patients at high risk of breast and ovarian cancer were enrolled between 2007 and 2011 and followed in a high-risk ovarian cancer screening clinic. Women were offered risk-reducing salpingo-oophorectomy (RRSO) and/or prophylactic mastectomy (PM) per guidelines. Their clinical data were recorded and analyzed using descriptive statistics. Results: Of 260 BRCA mutation carriers enrolled, 73 have no personal history of cancer and are “previvors.” Patients have been followed for a median of 26.5 months (1-50 months). The median age is 38 years, 81.1% are white, 16.2% are Ashkenazi Jewish, and 79.7% are premenopausal. BRCA1 carriers account for 43.2% of participants and 55.4% have a BRCA2 mutation. The majority of patients (77.6%) presented for ovarian cancer screening <1 year after their BRCA testing. In all, 60.8% of women underwent prophylactic surgery: 28.4% chose RRSO, 18.9% chose PM, and 13.5% chose both procedures. Postmenopausal women were more likely to choose RRSO, while uptake for both procedures was common for premenopausal women (Table, p=0.04). RRSO was also more likely in parous than nulliparous premenopausal women (35.2% vs 9% p=0.001). PM was not associated with parity (p=0.79). Of women that had both surgeries, 20% had them concurrently and 20% had PM first. Of the 60% that underwent RRSO first, all had their second surgery within 14 months. Conclusions: BRCA mutation “previvors” have a high overall uptake of prophylactic surgery. Premenopausal women are more likely to choose PM than postmenopausal women; reasons for this are unclear. “Previvors” that choose RRSO and PM typically have both surgeries within a fairly short timeframe. With the growing population of “previvors” in the US, further study of patient preferences regarding preventative surgery and long-term consequences is needed. [Table: see text]