IKAROS-你失去了多少羽毛:IKZF1缺陷中的轻度和重度表型
Timmy Strauss1,2,3, Julia Körholz1,2,3, Hye Sun Kuehn4
1Department of Pediatrics, Faculty of Medicine and University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany.
Frontiers in pediatrics
|May 30, 2024
概括
在IKAROS (IKZF1) 基因中的生殖系变异会导致免疫系统的先天性错误,导致免疫缺陷和癌症风险增加. 这项研究详细介绍了六名患者的IKZF1新型变异,扩大了这些复杂遗传疾病的知识.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
- 人类病理学 人类病理学
背景情况:
- 编码IKAROS的人类*IKZF1*基因中的异合体生殖系变异与免疫的先天性错误有关.
- 这些情况表现为免疫缺陷,免疫失调和恶性瘤风险增加,呈现出广泛的表型谱.
- 了解基因型-表型相关性对于阐明IKAROS相关疾病的病理生理学至关重要.
研究的目的:
- 描述在疑似IKAROS相关疾病的患者中发现的新型*IKZF1*变异.
- 描述这些患者的临床表型和诊断旅程.
- 巩固和扩大对IKAROS缺陷中的基因型-表型相关性的理解.
主要方法:
- 来自四个德国亲属的六名患者的基因分析揭示了两种新的IKZF1变体.
- 临床数据收集包括初始症状,诊断工作和最终诊断.
- 文献综述以将研究结果置于IKAROS相关疾病的更广泛范围内的背景.
主要成果:
- 鉴定了两种不同的新型异构 *IKZF1* 变种,导致 *IKZF1* 哈普隆缺陷.
- 六名受影响个体的详细临床描述,突出不同表现.
- 综合症状发作到诊断时间表,提供有关疾病进展的见解.
结论:
- 新的IKZF1*变种有助于免疫的先天性错误的频谱.
- *IKZF1*的偶发性不足是免疫调节失调和恶性瘤风险的一系列的基础.
- 进一步调查基因型-表型相关性对于改善诊断和管理至关重要.
相关概念视频
Pleiotropy
40.4K
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,...
40.4K
Epistasis
46.7K
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...
46.7K
Pedigree Analysis
84.2K
Overview
84.2K
Background and Environment Affect Phenotype
6.5K
Although the genetic makeup of an organism plays a major role in determining the phenotype, there are also several environmental factors, such as temperature, oxygen availability, presence of mutagens, that can alter an organism’s phenotype.
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
An example of how genetic background affects phenotype can be seen in horses. The Extension gene in horses is responsible for their coat color. A wild-type gene (EE) produces black pigment in the coat, while a mutant gene (ee) produces red pigment. A...
6.5K
Incomplete Dominance
22.5K
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.
22.5K
Lethal Alleles
15.4K
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...
15.4K


