在一个大型的中国吉特曼综合征队列中,变异的谱系
Lijun Mou1, Mengyue Tang2, Lina Zhu1
1Department of Nephrology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China.
Clinical genetics
|September 13, 2023
概括
在中国的吉特曼综合征 (GS) 患者中,SLC12A3基因的大规模重组 (LRG) 是常见的. 结合大规模并行测序 (MPS) 和多重结合依赖探头放大 (MLPA),提高了GS的遗传测试准确性.
科学领域:
- 遗传学 遗传学 是一个
- 分子生物学分子生物学
- 临床诊断 临床诊断 临床诊断
背景情况:
- 吉特曼综合征 (GS) 是一种遗传疾病,由SLC12A3基因中的双变异引起.
- 之前的研究表明,SLC12A3中的大重组 (LRG) 导致GS.遗传测试的低灵敏度.
- 此前,在中国GS患者中缺乏对LRG的系统查.
研究的目的:
- 在中国的吉特曼综合征 (GS) 患者中,系统地选SLC12A3基因中的大重组 (LRG).
- 评估结合大规模并行测序 (MPS) 和多重结依赖探头放大 (MLPA) 的诊断产量.
- 在SLC12A3基因中识别新型变异.
主要方法:
- 来自165例临床诊断的GS指数病例的基因组DNA使用大规模并行测序 (MPS) 进行了分析.
- 多重结依赖探头放大 (MLPA) 用于在疑似病例中检测大重组 (LRG).
- 将MPS和MLPA结果进行比较,以评估一致性并确定差异.
主要成果:
- 大规模并行测序 (MPS) 在165个索引病例中确定了变异,其中151个具有两个或更多受影响的等位基因,14个具有一个变异性等位基因.
- 在165例中,20例 (12.1%) 使用多重结依赖探头放大 (MLPA) 检测到大规模重组 (LRG).
- 在20个LRG病例中,MPS和MLPA仅在8个病例中显示出一致性,仅MLPA在6个病例中检测到额外的LRG,MPS在其他病例中确定了特定的删除.
结论:
- 大型重组 (LRG) 是中国人口中吉特曼综合征 (GS) 的重要原因,在12.1%的患者中发现.
- 大规模并行测序 (MPS) 和多重结合依赖探头放大 (MLPA) 是互补的技术,可以提高Gitelman综合征 (GS) 的诊断准确性.
- 该研究在中国GS队列中发现的102种不同的变体中发现了30种新型变体.
更多相关视频
09:16Array Comparative Genomic Hybridization Array CGH for Detection of Genomic Copy Number Variants
Published on: February 21, 2015
19.7K
08:22A Robust Polymerase Chain Reaction-based Assay for Quantifying Cytosine-guanine-guanine Trinucleotide Repeats in Fragile X Mental Retardation-1 Gene
Published on: September 16, 2019
7.9K
相关概念视频
Single Nucleotide Polymorphisms-SNPs
15.2K
A single nucleotide polymorphism or SNP is a single nucleotide variation at a specific genomic position in a large population. It is the most prevalent type of sequence variation found in the human genome. Point mutations that occur in more than 1% of the population qualify as SNPs. These are present once every 1000 nucleotides on an average in the human genome. Replacement of a purine with another purine (A/G) or a pyrimidine with another pyrimidine (C/T) is known as a transition. In contrast,...
15.2K
Comparing Copy Number Variations and SNPs
17.7K
Sequencing of the human genome has opened up several best-kept secrets of the genome. Scientists have identified thousands of genome variations that exist within a population. These variations can be a single nucleotide or a larger chromosomal variation.
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
Copy number variations or CNVs are the structural variations that cover more than 1kb of DNA sequence. The single nucleotide polymorphism (SNP), on the other hand, is a single nucleotide change or a point mutation that is found in more than 1%...
17.7K
Pleiotropy
40.6K
Pleiotropy is the phenomenon in which a single gene impacts multiple, seemingly unrelated phenotypic traits. For example, defects in the SOX10 gene cause Waardenburg Syndrome Type 4, or WS4, which can cause defects in pigmentation, hearing impairments, and an absence of intestinal contractions necessary for elimination. This diversity of phenotypes results from the expression pattern of SOX10 in early embryonic and fetal development. SOX10 is found in neural crest cells that form melanocytes,...
40.6K
Incomplete Dominance
22.7K
Gregor Mendel's work (1822 - 1884) was primarily focused on pea plants. Through his initial experiments, he determined that every gene in a diploid cell has two variants called alleles inherited from each parent. He suggested that amongst these two alleles, one allele is dominant in character and the other recessive. The combination of alleles determines the phenotype of a gene in an organism.
22.7K
Genome-wide Association Studies-GWAS
13.6K
Genome-wide association studies or GWAS are used to identify whether common SNPs are associated with certain diseases. Suppose specific SNPs are more frequently observed in individuals with a particular disease than those without the disease. In that case, those SNPs are said to be associated with the disease. Chi-square analysis is performed to check the probability of the allele likely to be associated with the disease.
GWAS does not require the identification of the target gene involved in...
GWAS does not require the identification of the target gene involved in...
13.6K
Human Genetics
610
Human genetics provides a profound framework for understanding the interplay between genetic predispositions and human psychology. At the heart of this discipline lies the study of how genes influence physical traits, behaviors, and susceptibility to diseases. Each person carries a unique genetic code that subtly or significantly shapes their psychological and behavioral landscape.
The complex relationship between genetics and psychology is observable through common biological components such...
The complex relationship between genetics and psychology is observable through common biological components such...
610
