外体序列测序改善了儿科无法解释的神经发育障碍的分子诊断
Marketa Wayhelova1,2, Vladimira Vallova3,4, Petr Broz3,5
1Department of Experimental Biology, Faculty of Science, Masaryk University, Brno, Czech Republic. marketa.wayhelova@mail.muni.cz.
Orphanet journal of rare diseases
|February 6, 2024
概括
在患有神经发育障碍 (NDD) 的家庭中,外因组测序 (ES) 实现了48.9%的诊断收益率. 基于Trio的ES是一种可靠的第一级遗传测试,用于诊断儿童的NDD.
科学领域:
- 遗传学 遗传学 是一个
- 基因组学就是基因组学.
- 发展生物学 发展生物学
背景情况:
- 神经发育障碍 (NDD) 和多重先天性异常 (MCAs) 是遗传异质的,影响智力,社会和日常功能.
- 外体序列测序 (ES) 与三元分析相结合,为这些复杂的疾病提供了高的诊断产量.
- 目前,ES是无法解释的NDD的最先进的诊断方法.
研究的目的:
- 评估三基外基组测序 (ES) 的诊断产量,在患有严重神经发育障碍 (NDD) 和多重先天性异常 (MCAs) 的儿童队列中.
- 识别致病性遗传变异,包括罕见和新型突变以及副本数变异 (CNVs).
- 确认ES作为儿科NDD的第一级诊断测试的实用性.
主要方法:
- 在85个家庭进行了外体序列测序 (ES),其中包括90名患有严重NDD和MCAs的儿童.
- 使用了公司内部的生物信息管道和独特的变体优先级算法.
- 使用PANTHER基因本体学进行了功能分析,以了解已识别的基因的作用.
主要成果:
- 该研究实现了48.9% (44/90名儿童) 的诊断收益率,在41名儿童中确定了致病变异,在3名儿童中确定了基因内拷贝数变异 (CNV).
- 在47个确定的致病变异中,超过一半 (53.2%) 是新型,这强调了ES对未解释的NDD的价值.
- 基于Trio的ES有效地检测出罕见的CNV,包括内基缺失和6Mb重复,并涉及已识别的基因在中枢神经系统发育.
结论:
- 三基外体序列测定 (ES) 在患有严重神经发育障碍 (NDD) 和多重先天性异常 (MCAs) 的儿童中显示了48.9%的高诊断收益率.
- 这项研究证实了基于三者的ES作为一个有效和可靠的第一级诊断工具,用于对儿科NDD的遗传评估.
- 这些发现对了解NDD的遗传原因作出了重大贡献,特别是在中欧地区.
相关概念视频
Next-generation Sequencing
88.8K
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
88.8K
Sanger Sequencing
754.4K
DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
754.4K


