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Updated: May 16, 2025

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通过分子建模分析在患有Loeys-Dietz综合征的患者中的基因型-表型相关性见解
Galateia Stathori1,2, Eleni Koniari1,2,3, Dimitrios Vlachakis1,4
1University Research Institute of Maternal and Child Health and Precision Medicine, School of Medicine, National Kapodistrian University of Athens, 115 27 Athens, Greece.
Genes
|April 26, 2025
概括
洛伊斯-迪茨综合征 (LDS) 是由TGF-β基因变异引起的. 这一案例突出显示了TGFB2变异在一个患有马尔状特征和大动脉动脉瘤的患者中,强调了准确的遗传诊断以进行有效的管理.
科学领域:
- 遗传学 是一个遗传学.
- 心血管医学 心血管医学
- 分子生物学分子生物学
背景情况:
- 洛伊斯-迪茨综合征 (LDS) 是一种遗传性胸前大动脉疾病,由TGF-β相关基因的致病变体引起.
- LDS与马方综合征具有共同的特征,但通常涉及大动脉根外的动脉瘤.
- 一名61岁的患者具有马尔方形特征和大动脉动脉瘤,最初被认为患有马尔方综合征.
研究的目的:
- 在患有非典型的大动脉动脉瘤呈现的患者中调查疾病的遗传原因.
- 为了澄清患者的诊断,最初假定患有马方综合征.
主要方法:
- 整体外体测序 (WES) 用于基因分析.
- 桑格测序被用来确认遗传发现.
主要成果:
- 在TGFB2基因的第5个特异体中发现了一种新型异构菌致病变体 (c.896G>A).
- 这种变异导致p.Arg299Gln氨基酸替代,导致TGF-β2蛋白的结构不稳定.
- 鉴定出的变体是LDS类型4的致病原体,部分与患者的临床表现保持一致.
结论:
- 精确的临床评估和遗传验证对于具有马尔法诺特征的患者至关重要.
- 这一案例扩大了对与TGFB2病原性变异相关的临床谱的理解.
- 准确诊断遗传性胸前大动脉疾病对于量身定制的患者管理至关重要.
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