在患有转移性乳腺癌的患者中,致病性生殖系变异
Kaitlin Demarest1, Arravinth Anantharajah1, Kara N Maxwell1,2,3
1Basser Center for BRCA, University of Pennsylvania, Philadelphia.
JAMA network open
|February 18, 2025
概括
致病性生殖系变异 (PGVs) 在转移性乳腺癌 (MpBC) 中很常见,其中BRCA1是最常见的. 胚胎基因检测对于在MBC患者中识别这些变异非常有效.
科学领域:
- 在瘤学瘤学.
- 遗传学 是一个遗传学.
- 病理学 病理学 病理学
背景情况:
- 转移性乳腺癌 (MpBC) 是一种罕见且具有攻击性的乳腺癌亚型.
- 关于MPBC群体内的乳腺癌易感基因中的致病性生殖系变异 (PGV) 的数据有限.
- 了解PGV患病率对于风险评估和治疗策略至关重要.
研究的目的:
- 在被诊断为MpBC的患者中确定乳腺癌基因中PGVs的频率和光谱.
- 在这个患者队列中评估生殖系遗传测试的临床实用性.
主要方法:
- 一项追溯队列研究对272名在2010年1月至2023年5月期间被诊断出确诊的MpBC患者进行了追溯队列研究.
- 电子医疗记录被审查为人口统计学,临床病理学和生殖系遗传测试数据.
- 基因咨询师和医生证实了生殖线变异状态;病理学家诊断了MpBC诊断和亚型.
主要成果:
- 在接受生殖基因测试的143名患者中,16.8% (24/143) 患有乳腺癌易感基因中的PGV.
- 最常见的PGV是BRCA1 (17名患者) 和BRCA2 (5名患者).
- 与零星的MpBC患者相比,PGV患者的诊断年龄较小,其他临床病理特征没有显著差异.
结论:
- 很大一部分患有乳腺癌的患者携带乳腺癌易感基因中的PGV,特别是BRCA1.1.
- 生殖系基因测试在MpBC患者中显示出高收益率,识别出许多符合当前测试标准的人.
- 这些发现支持对患有MpBC的个体进行生殖系遗传测试的常规考虑.
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