MFAP5变体诱导的多重巨型胸前大动脉动脉瘤
Yuxi Jin1, Tiange Li1,2, Shaoying Wu3
1Department of Pediatrics, Key Laboratory of Birth Defects and Related Diseases of Women and Children of MOE, West China Second University Hospital, Sichuan University, Chengdu, SC, China.
Cardiology in the young
|November 30, 2023
概括
在一个患有遗传性胸前大动脉动脉瘤的青少年身上,发现了MFAP5基因的新型遗传变异. 这一发现强调了早期诊断和管理这种危及生命的疾病的基因查.
科学领域:
- 遗传学 遗传学 是一个
- 心血管医学 心血管医学
- 分子生物学分子生物学
背景情况:
- 遗传性胸前动脉动脉瘤 (HTAA) 是一种危及生命的疾病,通常以自体主导模式遗传.
- 早期诊断和遗传鉴定对于管理HTAA和预防致命并发症至关重要.
研究的目的:
- 报告MFAP5基因的新型de novo变异,与年轻患者遗传性胸前大动脉动脉瘤相关.
- 突出整个外因组测序在识别致病变异的作用,以指导临床管理.
主要方法:
- 在一个被诊断患有HTAA.的15岁男性身上进行了全外组测序.
- 使用生物信息工具 (突变测试器,PolyPhen-s) 和结构分析 (AlphaFold) 来评估变种的致病性.
- 鉴定出的变种是MFAP5 c.236_237insA (p.N79Kfs*9).
主要成果:
- 一种新的异质合体变异,MFAP5 c.236_237insA (p.N79Kfs*9),在试验中被确定为HTAA的可能原因.
- 计算预测表明,这种变体是有害的,导致蛋白质的切断和破坏一个N-链接的糖化位点.
- 这代表了与HTAA相关的第三个确定突变部位.
结论:
- 新型MFAP5变体与早期发病的遗传性胸前大动脉动脉瘤的发展有关.
- 基因查,特别是全外体测序,对于识别大动脉扩张患者的致病变体至关重要.
- 早期识别遗传原因可以为个性化管理策略提供信息,并改善HTAA患者的治疗结果.
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