Highlights
- •Ten percent of women with BRCA associated EOC developed breast cancer.
- •Average 3.3 years of subsequent breast cancer diagnosis after EOC in BRCA carriers.
- •The incidence of breast cancer rises 3 years following diagnosis of serous EOC.
- •Breast cancer screening among women with BRCA-associated EOC was underutilized.
- •Prioritize non-invasive breast cancer screening 3 years after BRCA-associated EOC
Abstract
Objectives
BRCA 1 or 2 mutation carriers have increased risk of developing breast cancer (BC) and serous
epithelial ovarian cancer (EOC). The incidence of BC over time after EOC is unknown.
Optimal BC surveillance for BRCA mutation carriers following EOC has not been defined.
Methods
A multi-institutional retrospective chart review was performed. Patients with BRCA -associated EOC diagnosed between 1996 and 2016 were followed for an average of 80 months.
Women with previous bilateral mastectomy were excluded; women with prior BC and an
intact breast were included. Descriptive statistics, Chi Square, and univariate survival
analysis were performed.
Results
184 patients with BRCA -associated EOC were identified. Eighteen (10%) were diagnosed with BC a median of
48 months following EOC. Two (1%) with prior BC developed contralateral BC and 16
(9%) developed primary BC. The majority of BC (55%) was diagnosed 3 years following
EOC. The 3-, 5- and 10-year incidence of BC was 5.6%, 9.5% and 33.3%. Annual mammography
was performed in 43% and MRI in 34%. Twenty-eight (15%) women underwent risk-reducing
mastectomy (RRM). There was no statistically significant difference in BC screening
between women with, and without, a prior BC. BC was most commonly detected on mammogram.
Three (17%) women had occult BC at the time of RRM. Nine (50%) had DCIS, and 8 (44%)
had stage I/II BC. Median 5- and 10-year survival was 68% and 43% and was comparable
between groups.
Conclusions
Ten percent of women developed BC after EOC. The incidence of BC following EOC in
BRCA carriers increases over time, and surveillance is recommended given their enhanced
survival of EOC. Timely genetic testing for women with EOC is imperative to better
triage BC screening resources and treatment.
Keywords
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Article info
Publication history
Published online: November 30, 2021
Accepted:
October 13,
2021
Received in revised form:
October 7,
2021
Received:
July 6,
2021
Identification
Copyright
© 2021 Elsevier Inc. All rights reserved.
