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细菌系遗传NBN变异和对儿童B细胞急性淋巴细胞白血病的倾向
Carolin S Escherich1,2, Wenan Chen3, Yizhen Li1
1Department of Pharmacy and Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, TN.
Blood
|March 6, 2024
概括
生殖系NBN变异在儿科B细胞急性淋巴细胞白血病 (B-ALL) 中过度存在. 这些变异的异构体携带者表现出类似的生存结果,这表明安全的B-ALL治疗.
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:
- 在NBN基因中的双基因突变导致尼米根断裂综合征,易患淋巴细胞恶性瘤.
- 在白血病的发展中,异合体生殖系NBN变体在白血病发展中的作用不太清楚.
- NBN是一种DNA损伤修复基因,对基因组稳定性至关重要.
研究的目的:
- 调查生殖线NBN变异在儿科B细胞急性淋巴细胞白血病 (B-ALL) 的频率和影响.
- 为了确定NBN变异是否会给B-ALL发展带来风险.
- 评估异性NBN变体对B-ALL患者存活率和治疗安全性的影响.
主要方法:
- 4325名儿科B-ALL患者的测序,以确定生殖线NBN编码变体.
- 变异频率与大型非癌症控制队伍 (gnomAD) 的比较.
- 功能性测试用于评估已识别的NBN变体对蛋白质功能的影响.
- 对异构卵性NBN变种携带者与野生型患者的生存结果的分析.
主要成果:
- 在50名儿科B-ALL患者中确定了25种独特的,可能有害的NBN编码变体.
- 与对照组相比,在B-ALL中发现了这些变异的显著过度代表 (OR=1.8,P=.004).
- 验证了14种具有严重功能丧失表型的变体.
- 异卵性NBN变异携带者表现出与野生型患者相似的生存结果.
结论:
- 生殖线NBN变异与儿科B-ALL倾向有显著的相关性.
- 许多已识别的NBN变体会损害DNA修复功能.
- 异卵性NBN变异携带者可以安全地接受B-ALL治疗,这表明它们在个性化治疗策略中的潜在作用.
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