在胸前大动脉剖析病例和带有负遗传检测结果的马方综合征中存在非正规拼接变体
David R Murdock1, Dong-Chuan Guo1, John S DePaolo2
1Department of Internal Medicine, McGovern Medical School, University of Texas Health Science Center at Houston (UTHealth), Houston, Texas, USA.
NPJ genomic medicine
|March 22, 2025
概括
非正典拼接变体 (NCVAS) 是遗传性胸前大动脉疾病 (HTAD) 的未被认可的原因,导致大动脉剖析. 先进的拼接预测工具可以改善这些复杂的大动脉疾病的遗传诊断.
科学领域:
- 遗传学 遗传学 是一个
- 心血管医学 心血管医学
- 生物信息学是一种生物信息学.
背景情况:
- 遗传性胸前大动脉疾病 (HTAD) 具有致命的大动脉剖析的高风险.
- 目前的基因检测只能在一小部分受影响的个体中确定致病变体.
- 许多胸前大动脉疾病 (TAD) 病例的遗传基础,特别是零星剖析,仍然难以捉摸.
研究的目的:
- 调查非正规拼接变体 (NCVAS) 在TAD.病变发生过程中的作用.
- 评估先进拼接预测工具在识别NCVAS中的诊断实用性.
- 为了确定NCVAS在TAD患者的不同患者队列中的流行率.
主要方法:
- 使用SpliceAI和下一代测序 (外基因组,全基因组) 在零星剖析病例队列,HTAD试验和HTAD血统上.
- 对零星病例的临床小组测试的测序数据进行分析.
- 在大型生物库 (Penn Medicine BioBank,英国生物库) 中通过丰富分析验证的发现.
主要成果:
- 在已知综合征性HTAD基因中确定NCVAS,包括FBN1,SMAD3和COL3A1.1.
- 在马凡综合征 (MFS) 家庭中发现了内基FBN1变异.
- 在解剖队伍中,在HTAD相关基因中显著丰富NCVAS.
结论:
- NCVAS代表了一个被低估的TAD遗传贡献者,特别是在零星解剖和未解决的MFS病例中.
- 像SpliceAI这样的先进拼接预测工具对于发现NCVAS至关重要.
- 通过纳入NCVAS检测,可以实现TAD的改进基因诊断.
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