相关实验视频
Updated: Feb 6, 2026

10:34
Ultra-long Read Sequencing for Whole Genomic DNA Analysis
Published on: March 15, 2019
24.0K
基因组测序在患有渐进性运动障碍的儿童的诊断产量
Luca Schierbaum1, Enrique Gonzalez Saez-Diez1,2, Amy Tam1
1Movement Disorders Program, Department of Neurology and F.M. Kirby Neurobiology Center, Boston Children's Hospital, Harvard Medical School, Boston, MA, 02215 USA.
Brain : a journal of neurology
|February 5, 2026
概括
短读全基因组测序 (srWGS) 为儿童运动障碍提供了适度的诊断改善. 大多数诊断来自重新分析现有的外体数据,强调对遗传条件的更好的变异解释.
科学领域:
- 遗传学 是一个遗传学.
- 神经学 神经学
- 基因组医学是基因组医学.
背景情况:
- 儿童发病的运动障碍在遗传上是多样化的,涉及500多个基因.
- 标准的遗传测试,如外体测序,错过了某些变体类型 (例如,重复扩张,结构变体).
研究的目的:
- 评估短读全基因组测序 (srWGS) 和长读基因组测序 (lrWGS) 在儿童运动障碍患者的诊断价值,先前进行了非诊断性遗传测试.
- 为了识别新的遗传变异,并改善诊断产量在一个队列的年轻人与渐进的运动障碍.
主要方法:
- 招募了100名 (<30岁) 具有进展性运动障碍和先前非诊断性遗传测试的个人.
- 对所有参与者进行了srWGS,对14个未解决的三组进行了irrWGS.
- 利用多学科审查来解释变体和表型相关性.
主要成果:
- 在27%的病例中 (27/100) 取得了分子诊断;在另外33%的病例中发现了候选变体.
- 基因组级分析提供了额外的5%的诊断收益率,识别出异构体测序遗漏的变异 (例如,重复扩张,插入,重复).
- 33.3%的解决案例涉及先前报告但未被认可的诊断变异,突出解释挑战.
结论:
- 对于早期发作的运动障碍,SrWGS比外体序列测序提供了适度的增量诊断产量.
- 对外基层数据的重新分析和改进的变体解释对于最大限度地提高诊断产量至关重要.
- 需要进一步开发分析管道,以充分利用复杂遗传疾病的基因组测序.
相关概念视频
Diagnostic and Statistical Manual of Mental Disorders (DSM)
1.2K
The Diagnostic and Statistical Manual of Mental Disorders (DSM) serves as the primary classification system for mental health disorders, providing standardized diagnostic criteria for clinicians and researchers. First published by the American Psychiatric Association (APA) in 1952, the DSM has undergone several revisions to reflect evolving psychiatric understanding. The fifth edition, DSM-5, released in 2013, introduced key updates that expanded diagnostic categories and modified diagnostic...
1.2K
Genomics
40.7K
Genomics is the science of genomes: it is the study of all the genetic material of an organism. In humans, the genome consists of information carried in 23 pairs of chromosomes in the nucleus, as well as mitochondrial DNA. In genomics, both coding and non-coding DNA is sequenced and analyzed. Genomics allows a better understanding of all living things, their evolution, and their diversity. It has a myriad of uses: for example, to build phylogenetic trees, to improve productivity and...
40.7K
ATP Yield
79.0K
Cellular respiration produces 30 - 32 ATP per glucose molecule. Although most of the ATP results from oxidative phosphorylation and the electron transport chain (ETC), 4 ATP are gained beforehand (2 from glycolysis and 2 from the citric acid cycle).
The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
The ETC is embedded in the inner mitochondrial membrane and is comprised of four main protein complexes and an ATP synthase. NADH and FADH2 pass electrons to these complexes, which pump protons into the intermembrane space. This distribution of...
79.0K
Reaction Yield
60.0K
The theoretical yield of a reaction is the amount of product estimated to form based on the stoichiometry of the balanced chemical equation. The theoretical yield assumes the complete conversion of the limiting reactant into the desired product. The amount of product that is obtained by performing the reaction is called the actual yield, and it may be less than or (very rarely) equal to the theoretical yield.
60.0K
Genomic Imprinting and Inheritance
37.2K
Diploid organisms inherit genetic material through chromosomes from both parents. Copies of the same gene are known as alleles. In most cases, both alleles are simultaneously expressed and allow various cellular processes to function optimally. If one of the alleles is missing or mutated, the expression of the other allele can compensate; however, this is not true for all genes.
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
The expression of some genes depends on which parent passed the gene to the offspring, through a phenomenon known as...
37.2K
Genome Size and the Evolution of New Genes
9.1K
While every living organism has a genome of some kind (be it RNA, or DNA), there is considerable variation in the sizes of these blueprints. One major factor that impacts genome size is whether the organism is prokaryotic or eukaryotic. In prokaryotes, the genome contains little to no non-coding sequence, such that genes are tightly clustered in groups or operons sequentially along the chromosome. Conversely, the genes in eukaryotes are punctuated by long stretches of non-coding sequence.
9.1K

