Abstract
Background
Breast-conserving surgery (BCS) is often preferred for localized, small breast cancers, but its safety and efficacy in BRCA-mutation carriers is still controversial. This meta-analysis aimed to determine whether there was any significant difference in the incidence of ipsilateral breast tumor recurrence (IBTR) between BRCA-mutation carriers who underwent BCS and controls with sporadic breast cancer.
Methods
A PubMed search was conducted through March 2020 to identify studies examining the risk of IBTR after BCS in BRCA-mutation carriers versus controls. The Cochrane risk-of-bias tool was used to assess the risk of bias. The pooled risk ratio (RR) was calculated using the random-effects model.
Results
Thirteen studies involving 701 BRCA-mutation carriers and 4788 controls in total were eventually analyzed. In the meta-analysis, IBTR after BCS was significantly higher in BRCA-mutation carriers (RR: 1.589; 95% confidence interval (CI) 1.247–2.024; P < 0.001). Subgroup analysis of the follow-up time found that the RR for IBTR increased as the observation period lengthened (median follow-up: ≧ 7 years [RR: 1.505; 95% CI 1.184–1.913] and ≧ 10 years [RR: 1.601; 95% CI 1.201–2.132], respectively). However, a qualitative meta-analysis of overall survival in three cohort studies found no evidence to suggest a deterioration in overall survival in patients with BCS.
Conclusions
The present study demonstrated that BRCA-mutation carriers with BCS have a higher risk of IBTR, which tended to persist for a long period and become more apparent with longer observation.
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Nara, M., Ishihara, S., Kitano, A. et al. Does breast-conserving surgery with radiotherapy in BRCA-mutation carriers significantly increase ipsilateral breast tumor recurrence? A systematic review and meta-analysis. Breast Cancer 29, 394–401 (2022). https://doi.org/10.1007/s12282-022-01343-3
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DOI: https://doi.org/10.1007/s12282-022-01343-3