癌症患者的亚临床端粒生物学障碍 异构对RTEL1 R1264H创始人变体的异构
Lauren G Banaszak1,2, Elise Fiala1, Ozge Ceyhan-Birsoy3
1Clinical Genetics Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, New York, USA.
American journal of medical genetics. Part A
|December 22, 2025
概括
在阿什基纳兹犹太人中常见的RTEL1 R1264H变体,即使在单复制载体中也可能导致端粒生物学障碍 (TBD). 这种异合体状态可以增加对严重治疗并发症的易感性.
科学领域:
- 遗传学 是一个遗传学.
- 在瘤学瘤学.
- 分子生物学分子生物学
背景情况:
- RTEL1 R1264H是阿什基纳兹犹太人口中普遍存在的创始人变种.
- 双性RTEL1 R1264H导致严重的儿童端粒生物学障碍 (TBD).
- 单基因RTEL1 R1264H载体状态的临床影响以前是不确定的.
研究的目的:
- 为了评估异构性RTEL1 R1264H的临床意义.
- 在携带单基因变异的癌症患者中评估亚临床TBD.
- 调查可能增加对治疗相关毒性的敏感性.
主要方法:
- 在39,337个个体的生殖线RTEL1 R1264H状态的回顾性分析.
- 临床特征综述,端粒长度评估和瘤体质特征分析对异合体载体.
- 对TBD的诊断标准的评估和与治疗相关的毒性发生率.
主要成果:
- 0.08%的个体 (32/39,337) 对RTEL1 R1264H具有异性.
- 9%的携带者符合结核病诊断标准;6%的人有可疑的病史.
- 22%的携带者经历了与治疗相关的严重或致命的毒性,有些没有其他TBD特征.
结论:
- 单基RTEL1 R1264H可以赋予低透度的TBD风险,可能以自身主导的方式起作用.
- 异构体RTEL1 R1264H载体可能会增加对治疗并发症的敏感性.
- 研究结果为这种变异携带者的遗传咨询和管理提供了信息.
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