证实MSH3是一种为腺瘤多重症倾向的基因
Marie-Charlotte Villy1, Julien Masliah-Planchon2, Anne Schnitzler2
1Department of Genetics, Université Paris Cité, Institut Curie, Paris, France marie-charlotte.villy@curie.fr.
Journal of medical genetics
|July 4, 2023
概括
MSH3基因中的双变异与遗传性结直肠和十二指肠多重症有关. 这一发现有助于了解癌症倾向性和解释遗传变异.
科学领域:
- 遗传学 遗传学 是一个
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- 作为DNA不匹配修复的一部分的MSH3基因以前没有与林奇综合征有关.
- 之前的一份报告表明,MSH3在遗传性癌症倾向中的作用是由于双性生殖系变异导致减弱结直肠腺瘤多重症.
- 这些患者的瘤在选择的四核酸重复 (EMAST) 时显示出高的微卫星变化,表明MSH3缺乏.
研究的目的:
- 报告MSH3相关多重症的新患者.
- 在MSH3缺乏症患者中研究EMAST表型.
- 进一步确定MSH3变种与遗传多重症之间的联系.
主要方法:
- 报告了五名新的与MSH3相关的多重症患者.
- 详细的个人和家庭历史收藏.
- 在各种正常和瘤样本中分析EMAST表型.
主要成果:
- 所有五名患者都呈现了减弱的结直肠腺瘤多重症;两名患者还患有十二指肠多重症.
- 在这两位女性患者中都观察到乳腺癌.
- 在各种样本中检测到EMAST,证实MSH3缺乏,不稳定性与多异位扩张相关. 基于负的EMAST结果,两名患者被排除为生殖线MSH3缺乏症.
结论:
- 双性MSH3生殖系病原体变异与结直肠和十二指肠腺瘤多重症有关.
- 需要进一步的大规模研究来确定瘤谱和与MSH3缺乏相关的风险.
- EMAST测试可以帮助解释未知意义的变异,MSH3应纳入诊断基因组.
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