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马耳他自体主导多囊性病的基因型-表型

Natalie Ciantar¹, Graziella Zahra², Julian Delicata³

¹Department of Anatomy, Faculty of Medicine & Surgery, University of Malta,Malta.

European journal of medical genetics

|March 27, 2024

概括

在82%的马耳他患者中,基因测试确定了自体主导多囊性病 (ADPKD) 的原因,揭示了PKD2基因的创始变异,并将基因型与疾病进展联系起来.

科学领域:

遗传学和基因组学遗传学和基因组学
腎臟病學 (nephrology) 是一種醫學專業.
分子生物学分子生物学

背景情况:

自体主导多囊性病 (ADPKD) 是一种导致囊的遗传疾病,通常导致末期病 (ESRD).
了解ADPKD的遗传基础对于诊断和预后至关重要.
这项研究侧重于马耳他人口,调查ADPKD的遗传病因.

研究的目的:

在临床诊断的马耳他患者中确定ADPKD的遗传原因.
为了将特定的遗传发现与ADPKD的临床表现相关联.
在马耳他队伍中识别任何特定于种群的遗传变异.

主要方法:

采用下一代测序 (NGS) 和一个定制的基因组 (PKD1,PKD2,GANAB,DNAJB11,PKHD1,DZIP1L) 为60名ADPKD患者.
在初始面板测试中呈阴性病例时,采用整体外体测序 (WES).
通过桑格测序确认了变异,并进行了微卫星分析,以调查一次性PKD2变异的起源.

主要成果:

在82%的患者中取得了基因诊断,PKD1 (42%) 和PKD2 (38%) 的致病变体是最常见的.
在32%的病例中确定了一个创始变体 (PKD2 c.709+1G>A),这表明马耳他人口中有一个共同的祖先.
证明了基因型和表型之间的相关性,PKD1变异与更快的eGFR衰退和更早的ESRD发病相关,特别是截断和框架转移变异.

结论:

定制基因面板,其次是WES,是ADPKD的有效一线诊断策略.
在马耳他ADPKD队列中发现了PKD2基因的创始变异.
基因型显著影响ADPKD表型,强调了分子诊断对预后和管理的重要性.

关键词:

在 ADPKDD 中,基因型基因型基因型在PKD1中,PKD1是PKD1.在PKD2中,PKD2是PKD2.目标NGS的目标在WES WES中,您可以使用

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