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在癌症患者中评估生殖系TP53突变:对Li-Fraumeni综合征的见解和遗传测试指南
Anastasiia Danishevich1, Daria Fedorova2, Natalia Bodunova2
1SBHI Moscow Clinical Scientific Center Named After Loginov of Moscow Healthcare Department, Moscow, 111123, Russia. a.danishevich@mknc.ru.
Hereditary cancer in clinical practice
|February 18, 2025
概括
与Li-Fraumeni综合征 (LFS) 相关的生殖系TP53变体在0.4%的俄罗斯乳腺癌患者中被发现. 目前的测试指南忽略了超过一半的携带者,强调了需要更广泛的基因查.
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:
- 生殖系TP53基因变异与Li-Fraumeni综合征 (LFS) 相关,这是一种罕见且具有侵略性的遗传性癌症倾向.
- 这项研究的重点是针对大量俄罗斯癌症患者,主要是乳腺癌患者的TP53致病变体的流行率和类型.
研究的目的:
- 调查俄罗斯队列中TP53致病变体的频率和频谱,主要是乳腺癌患者.
- 评估当前的基因测试标准在这个人群中对Li-Fraumeni综合征的诊断产量.
主要方法:
- 来自3,455名癌症患者的基因组DNA使用下一代测序和全基因组测序进行了分析.
- 确定了临床显著的TP53变体,通过桑格测序验证,并与临床和家族病史数据相关联.
主要成果:
- 13人 (0.4%) 携带临床显著的生殖系TP53变异,所有女性乳腺癌患者.
- 乳腺癌诊断的平均年龄为39.9岁 (中位数为36岁).
- 只有38.5%的TP53变种携带者符合修改后的Chompret标准,这表明诊断不足.
结论:
- 彻底的临床和家族病史评估对于诊断LFS和识别TP53变种携带者至关重要.
- 识别TP53携带者对于个性化治疗,预后,监测和风险亲属级联查至关重要.
- 目前的LFS诊断指南不足,缺少超过一半的TP53突变载体,需要更具包容性的基因测试方法.
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