在IFT140中异性功能丧失变体与多囊性病相关
Dinah Clark1, Robert Burns1, Michelle S Bloom1
1Natera, Inc., Austin, Texas, USA.
American journal of medical genetics. Part A
|August 13, 2024
概括
在许多患者中,IFT140的功能丧失变异会导致自身主导的多囊性病 (ADPKD),特别是当没有发现其他遗传原因时. 这一发现凸显了IFT140作为ADPKD发展中的关键基因.
科学领域:
- 遗传学 遗传学是一种遗传学.
- 腎臟病學 (nephrology) 是一種醫學.
- 分子生物学分子生物学
背景情况:
- 自体主导性多囊性病 (ADPKD) 影响1000名成年人中有1人,通常是由PKD1或PKD2变体引起的.
- 其他像HNF1B,GANAB和ALG9这样的基因也与ADPKD有关.
- 新出现的证据表明,单基因功能丧失 (LoF) IFT140变体与非综合征性ADPKD有关.
研究的目的:
- 研究IFT140LoF变体与性病患者表型发现的谱之间的关联.
- 确定IFT140LoF变异在无法解释的ADPKD患者中的流行率和临床意义.
主要方法:
- 审查了对385个病相关基因进行基因测试的患者队列.
- 已确定患有异性LoF IFT140变体的患者被归类为致病性或可能致病性.
- 在患有囊性疾病和没有囊性疾病的患者中比较IFT140LoF变异的频率.
主要成果:
- 在患有囊性病的患者中,IFT140的LoF变异显著丰富.
- 在60.6%的IFT140LoF变异个体中观察到囊性表型,其中98%没有其他确定的遗传原因.
- 大多数已识别的IFT140 LoF变体是框架转移或无意义突变,患者通常呈现出较轻微的临床特征,包括末期病率低.
结论:
- IFT140中的单基LoF变异是ADPKD的重要原因,特别是在其他遗传病因尚未确定的情况下.
- 这项研究提供了强有力的证据,支持IFT140在ADPKD病变发生中的作用.
- 与IFT140相关的PKD与典型的ADPKD相比,似乎具有较轻的临床过程.
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