Increased risk of contralateral breast cancer for BRCA1/2 wild-type, high-risk Korean breast cancer patients: a retrospective cohort study

Autor: Eunhye Kang, Ji-Jung Jung, Changjin Lim, Hong-Kyu Kim, Han-Byoel Lee, Wonshik Han, Hyeong-Gon Moon
Jazyk: angličtina
Rok vydání: 2024
Předmět:
Zdroj: Breast Cancer Research, Vol 26, Iss 1, Pp 1-9 (2024)
Druh dokumentu: article
ISSN: 1465-542X
DOI: 10.1186/s13058-024-01769-x
Popis: Abstract Background This study aimed to investigate the contralateral breast cancer (CBC) recurrence rate in Korean breast cancer patients according to their BRCA1/2 germline mutation status, focusing particularly on the CBC recurrence risk in BRCA1/2 negative (BRCAx) patients. Methods We conducted a retrospective study on 13,107 primary breast cancer patients. The patients were divided into high-risk and low-risk groups for hereditary breast cancer based on the Korean National Health Insurance Service’s eligibility criteria for BRCA1/2 germline mutation testing. The high-risk group was further categorized into the BRCA mutation group, the BRCAx group, and the not tested group. We evaluated the overall survival and cumulative risk of developing CBC in these patients. Results Among 4494 high-risk patients, 973 (21.7%) underwent genetic testing for BRCA1/2 germline mutation, revealing mutations in 158 patients (16.2%). We observed significant overall survival differences across all four groups, with the high-risk, not-tested group demonstrating notably worse overall survival (p
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