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BRCA1/2 Mutation-associated Breast Cancer, Wide Local Excision and Radiotherapy or Unilateral Mastectomy: A
S Hallam1, S Govindarajulu2, B Huckett1
1University Hospitals Bristol, UK.
Aims:
BRCA1/2 mutation carriers show reduced apoptotic response to ionising radiation leading to recent debate about the safety of wide local excision and radiotherapy. The aim of the current study was to determine if BRCA1/2 mutation carriers with breast cancer undergoing wide local excision and radiotherapy show increased ipsilateral and contralateral breast tumour recurrence and reduced survival compared with unilateral mastectomy.
Materials And Methods:
Following a detailed literature search, the methodology, populations, biases and outcomes of ipsilateral breast tumour recurrence, contralateral breast tumour recurrence and survival were evaluated for 25 articles.
Results:
No differences in outcomes were found between wide local excision and mastectomy. BRCA1/2 mutation status was predictive of contralateral breast cancer only. Radiotherapy reduces the risk of ipsilateral recurrence and confers no increase in contralateral recurrence.
Conclusion:
BRCA1/2 mutation status does not preclude treatment with wide local excision and radiotherapy. Given the retrospective studies with inherent flaws and small patient numbers, further large prospective trials are required.
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