Impact of BRCA mutation on the survival and risk of contralateral breast cancer in Asian breast cancer patients

Po Han Lin, Shin Cheh Chen, Ling Ming Tseng, King Jen Chang, Ai Chu Huang, Kuo Chih Cheng, Karen Yang, Hui Chen Wu, Tsu Yi Chao, Yuan Ching Chang, Peng Chan Lin, Wen Hung Kuo, Wen Lin Kuo, Ching Hung Lin, Huo Mu Chen, Dah Cherng Yeh, Liang Chih Liu, Chun Yu Liu, Ming Yang Wang, Chiao LoYen Shen Lu, Chiun Sheng Huang

研究成果: Article同行評審

6 引文 斯高帕斯(Scopus)

摘要

Purpose: Breast cancer is increasing around the globe, including Asia. We aimed to examine the survival and risk of contralateral breast cancer (CBC) in Asian breast cancer patients with BRCA mutations. Methods: A total of 128 breast cancer patients with germline BRCA mutations and 4,754 control breast cancer patients were enrolled. Data on clinical–pathologic characteristics, survival, and CBC were collected from the medical record. The rates of survival and CBC were estimated by Kaplan–Meier method. Results: The mean age of onset in BRCA mutation carriers was significantly younger than control patients (BRCA vs. Non-BRCA: 43.9 vs. 53.2 years old). BRCA mutation carriers had a higher proportion of triple-negative breast cancer (TNBC) (52%) than control patients (12%, p < 0.001). The risk of CBC was significantly higher in BRCA mutation patients than in control cases (hazard ratio (HR) = 3.95, 95% CI 2.71–5.75); when stratified by genotype, the HRs (95%CI) were 4.84 (3.00–7.82) for BRCA1 and 3.13 (1.78–5.49) for BRCA2 carriers, respectively. Moreover, BRCA1 mutation patients with triple-negative breast cancer (TNBC) as their first breast cancer had the highest risk of CBC (HR = 5.55, 95% CI 3.29–9.34). However, we did not observe any differences in relapse-free survival and overall survival between mutation carriers and control patients. Conclusion: Our study suggest that BRCA patients had a significantly higher risk of developing CBC, particularly for BRCA1 mutation carriers with TNBC as the first breast cancer.

原文English
頁(從 - 到)629-637
頁數9
期刊Breast Cancer Research and Treatment
192
發行號3
DOIs
出版狀態Published - 2022 4月

All Science Journal Classification (ASJC) codes

  • 腫瘤科
  • 癌症研究

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