生殖基因EGFR突变和家族肺癌
Geoffrey R Oxnard1, Ruthia Chen1, Jennifer C Pharr1
1Dana-Farber Cancer Institute, Boston, MA.
概括
遗传性肺癌风险与生殖线EGFR致病变体 (PVs) 相关,特别是EGFR T790M,主要在美国东南部发现. 这种创始变种显示出可变的透性,受影响的载体经常发展为肺腺癌和结节.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 肺部病理学 肺部病理学
背景情况:
- 影响肺癌风险的遗传因素尚未得到充分了解.
- 像EGFR这样的基因中的生殖系致病变体 (PVs) 可以使个体易患肺癌.
- 鉴别这些变异对于识别有风险的家庭至关重要.
研究的目的:
- 为了研究具有生殖线EGFRPVs的家族的临床特征.
- 了解EGFRPVs的遗传模式和透性.
- 确定特定EGFR变异的潜在创始人效应和地理丰富.
主要方法:
- 肺癌患者和亲属在调查T790M研究遗传风险 (NCT01754025) 中的潜在招募.
- 对EGFRPV的生殖线检测,包括EGFRT790M.
- 临床表型定型,体质突变分析和全基因组的杂型定型.
主要成果:
- 来自59个亲属的141名参与者被录取;116人接受了EGFR T790M检测.
- 55%的携带者 (50/91) 被诊断出患有肺癌,52%被诊断为60岁.
- 89%的携带者共享的4.1Mb单元型表明美国东南部最近的创始人变种.
- 携带者肺癌的95%具有EGFR驱动器转换.
- 在9/36个没有癌症的生殖系载体中检测到肺结节,其中包括一个年轻人.
结论:
- 这是对家族性EGFR突变肺癌的第一个前性研究.
- 最近的创始人生殖系EGFR T790M变异在美国东南部得到了丰富.
- 高频率的EGFR驱动的肺腺癌和结节支持对高风险个人和家庭的CT查.
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