在DNA修复途径中的生殖系致病变体:在转位相关瘤的显著子集中的一个关键特征
Carla Saoud1, Josephine K Dermawan2, Kanika Arora1
1Department of Pathology and Laboratory Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA.
NPJ precision oncology
|May 7, 2025
概括
在13%的转位相关瘤 (TAS) 中存在生殖系致病变体,影响癌症查和治疗. 由于潜在的临床干预措施,建议对所有TAS患者,特别是成年人进行测试.
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:
- 转位相关瘤 (TAS) 是一种罕见的,异质的癌症,主要影响年轻人.
- 了解生殖系遗传贡献对于TAS的风险评估和个性化治疗至关重要.
研究的目的:
- 在TAS患者中调查生殖系致病/可能致病 (P/LP) 变异的临床影响.
- 分析临床病理学特征,基因组变化和与生殖系变异相关的生存结果.
- 评估对当前遗传查指南和TAS的临床干预措施的影响.
主要方法:
- 对426名TAS患者进行瘤和生殖细胞DNA测序的回顾性分析.
- 将生殖系P/LP变种分为Tier 1 (中度/高透性) 和Tier 2 (低透性/衰退性) 的分类.
- 跨变种层和患者人口统计数据的临床,病理,基因组和生存数据的比较分析.
主要成果:
- 在13%的TAS患者中发现了生殖系P/LP变异 (一级:6.6%,二级:6.3%).
- 儿科患者的变异频率较低,并因TAS组织学而有所不同,特别是在单一纤维瘤中更高.
- 没有发现生殖系变异与体质概况或生存结果之间的关联.
- 临床干预,包括向治疗,在46%的Tier 1患者中被触发.
结论:
- 生殖系P/LP变异在儿科TAS中不太常见,这表明需要考虑特定年龄的查.
- 这些发现支持对所有TAS患者进行生殖基因测试,以确定可操作的变体并指导治疗.
- 这项研究挑战了目前的肉瘤遗传查指南,并强调了TAS的生殖系检测的临床实用性.
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