澳大利亚CADASIL队列中NOTCH3变异的频谱
Solomon K Guyler1, Jasmine Tsai1, Neven Maksemous1,2
1Genomics Research Centre, Centre for Genomics and Personalised Health, School of Biomedical Sciences, Queensland University of Technology (QUT), Brisbane, QLD 4001, Australia.
脑内自体主导动脉病变与皮下心脏病发作和白脑病变 (CADASIL) 的遗传查在12.1%的患者中发现了NOTCH3变异. 一个复合异位病例表明CADASIL症状的早期发作,强调需要探索其他遗传因素.
科学领域:
- 神经学 神经学
- 遗传学 是一个遗传学.
- 分子生物学分子生物学
背景情况:
- 大脑自体主导性动脉病变与皮下心脏病发作和白脑病变 (CADASIL) 是一种遗传神经系统疾病.
- 在NOTCH3基因的突变,主要影响氨酸残留物,导致CADASIL.
- 对NOTCH3基因的基因测试是CADASIL目前的诊断标准.
研究的目的:
- 在疑似患有CADASIL的患者中分析NOTCH3变异的谱.
- 调查CADASIL的遗传基础,并确定新的变异.
- 在CADASIL患者中报告NOTCH3变异的复合异性单一病例.
主要方法:
- 使用桑格或下一代测序,对1281名患者样本进行了NOTCH3突变的选.
- 在1997年1月1日至2025年10月1日期间对CADASIL进行了基因测试.
- 分析了NOTCH3基因的氨酸改变和非EGFr编码前子的变异.
主要成果:
- 在测试患者队列的12.1%中确定了改变氨酸的NOTCH3变体.
- 检测到49个变体在2-24的外显子和两个变体在非EGFr编码外显子.
- 报告了CADASIL的第一个病例,该病例与两种致病性NOTCH3变体的复合异构性有关,呈现出严重的早期症状.
结论:
- 对NOTCH3变种的复合异构性可能导致CADASIL的早期发病.
- 这项研究扩大了对与CADASIL相关的NOTCH3变体的理解.
- 很大一部分被测试的患者缺乏NOTCH3变异,这表明其他基因有助于CADASIL.
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