非洲祖先特异变种IKKβ p.Glu502Lys赋予高狼风险
Gudny Ella Thorlacius1, Erna V Ivarsdottir2, Saedis Saevarsdottir2,3,4
1Amgen deCODE Genetics, Reykjavik, Iceland. gudny.thorlacius@decode.is.
Nature genetics
|November 18, 2025
概括
一种罕见的基因变异,IKKβE502K,在非洲祖先的个体中显著增加皮肤性红斑狼 (CLE) 和全身性红斑狼 (SLE) 的风险. 这一发现强调了在遗传狼研究中多样化的种群的重要性.
科学领域:
- 遗传学 遗传学 是一个
- 免疫学 免疫学 免疫学
- 皮肤病学 皮肤病学
背景情况:
- 皮肤性红斑狼 (CLE) 和全身性红斑狼 (SLE) 是一种自身免疫性疾病.
- 非洲血统的个人患狼的患病率较高,但在遗传研究中代表性不足.
- 了解不同人群中狼的遗传基础对于公平的医疗保健至关重要.
研究的目的:
- 在非洲血统的个人中识别与狼相关的遗传因素.
- 研究特定遗传变异在CLE和SLE风险和患病率中的作用.
- 强调在遗传关联研究中包括多元祖先的重要性.
主要方法:
- 27,820名美国人的全基因组测序,从多元祖先队列中推断出具有非洲血统的美国人.
- 分析包括患有CLE和/或SLE的个体.
- 复制我们所有人的发现和VA百万退伍军人研究计划.
主要成果:
- 在IKBKB中发现了一种罕见的误解变异,rs115698972G>A (IKKβE502K),仅限于非洲祖先的个体.
- IKKβE502K为CLE (OR=5.4) 和SLE (OR=3.3) 的几率比率显著增加.
- 这种变异在研究的队列中占CLE (10.4%) 和SLE (6.4%) 病例的很大一部分,在独立队列中具有强大的复制性.
结论:
- IKKβE502K变种是非洲血统个体中狼的重要危险因素.
- 包括多样化的种群在内的遗传研究对于全面了解疾病病因学至关重要.
- 这一发现对了解狼发病率和为代表性不足的群体制定有针对性的研究策略具有重要意义.
更多相关视频
09:34Targeted Next-generation Sequencing and Bioinformatics Pipeline to Evaluate Genetic Determinants of Constitutional Disease
Published on: April 4, 2018
34.5K
11:35Screening for Functional Non-coding Genetic Variants Using Electrophoretic Mobility Shift Assay EMSA and DNA-affinity Precipitation Assay DAPA
Published on: August 21, 2016
13.4K
相关概念视频
Lethal Alleles
17.6K
Agouti: A Lethal Allele
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
Lucien Cuénot discovered lethal alleles in 1905 while studying the inheritance of coat color in mice. The agouti gene is responsible for the color of the coat in mice. This gene codes for an agouti-signaling protein, which is responsible for melanin distribution in mammals. The wild-type allele gives rise to gray-brown coat color in mice, while the mutant allele gives rise to yellow coat color. In addition to coat color, the agouti gene is associated with the yellow...
17.6K
Epistasis
50.0K
In addition to multiple alleles at the same locus influencing traits, numerous genes or alleles at different locations may interact and influence phenotypes in a phenomenon called epistasis. For example, rabbit fur can be black or brown depending on whether the animal is homozygous dominant or heterozygous at a TYRP1 locus. However, if the rabbit is also homozygous recessive at a locus on the tyrosinase gene (TYR), it will have an unshaded coat that appears white, regardless of its TYRP1...
50.0K
Pleiotropy
43.1K
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,...
43.1K
Type IV Collagen of Basal Lamina
2.9K
Type IV collagen is a 400 nm long, network-forming collagen that acts as a barrier between the epithelial and endothelial cells. Type IV collagen forms the backbone of the basement membrane by scaffolding with laminin, entactin, proteoglycans, and fibronectin. Apart from rendering structural support to the basement membrane, it also helps entail signaling potentials necessary for both pathological and physiological functions.
A type IV collagen molecule has six alpha chains which can...
A type IV collagen molecule has six alpha chains which can...
2.9K
Single Nucleotide Polymorphisms-SNPs
17.9K
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,...
17.9K
Genome-wide Association Studies-GWAS
15.2K
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...
15.2K
