由于SORD中的突变导致的Charcot-Marie-Tooth疾病的基因型和表型谱
Andrea Cortese1,2, Maike F Dohrn3,4, Riccardo Curro1,2
1Department of Neuromuscular Diseases, UCL Queen Square Institute of Neurology, London, WC1N 3BG, UK.
Brain : a journal of neurology
|February 12, 2025
概括
与SORD基因突变相关的Charcot-Marie-Tooth2型疾病 (CMT2) 是一种常见的衰退性神经病变. 血清比醇水平升高证实了诊断,并有助于评估SORD变体.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 生物化学 生物化学
背景情况:
- 索尔比托脱酶 (SORD) 基因中的双性功能丧失突变会导致夏科特-玛丽-病2型 (CMT2),一种衰退性神经病变.
- 完整的基因型-表型谱和CMT-SORD的疾病进展需要进一步定义.
- 一项正在进行的临床试验正在评估CMT-SORD的语音状态,强调需要准确的诊断.
研究的目的:
- 确定基因型-表型谱和CMT-SORD的进展.
- 确定禁食血清比醇作为CMT-SORD诊断和变异评估的可靠生物标志物.
- 描述CMT-SORD的临床表现和自然史.
主要方法:
- 在126个家庭的144名CMT-SORD患者中进行了跨截面多中心研究.
- 基因分析以确定致病性SORD变体.
- 在患者,对照组和异合体载体中测量血清索伯水平.
- 神经功能临床评估,包括肌肉强度和神经传导研究.
主要成果:
- c.757delG (p.Ala253GlnfsTer27) 和c.458C>A (p.Ala153Asp) 是最常见的致病性SORD等位基因.
- 与对照组和携带者相比,CMT-SORD患者的血清索尔比托水平显著更高.
- 疾病的发病通常发生在第二个十年,有着突出的脚背和脚部曲的弱点. 男性的性别与较大的远端下肢软弱相关.
- 神经传导研究表明,主动主导的轴突神经病变,一些病例显示中间传导速度.
结论:
- CMT-SORD是一种频繁的衰退性,运动主导的轴突神经病变,具有特征的足部肌肉参与.
- 禁食血清比醇作为CMT-SORD诊断和SORD变异的致病性评估的可靠生物标志物.
- 了解基因型-表型谱和进展对于管理CMT-SORD至关重要,特别是在新兴疗法中.
更多相关视频
06:35In Vivo Electrophysiological Measurement of Compound Muscle Action Potential from the Forelimbs in Mouse Models of Motor Neuron Degeneration
Published on: June 15, 2018
19.2K
09:37Navigating MARRVEL, a Web-Based Tool that Integrates Human Genomics and Model Organism Genetics Information
Published on: August 15, 2019
9.6K
相关概念视频
Pleiotropy
39.5K
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,...
39.5K
Incomplete Dominance
20.9K
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.
20.9K
Pedigree Analysis
83.7K
Overview
83.7K
Sex-linked Disorders
100.0K
Like autosomes, sex chromosomes contain a variety of genes necessary for normal body function. When a mutation in one of these genes results in biological deficits, the disorder is considered sex-linked.
100.0K
Genetic Lingo
100.0K
Overview
100.0K
Multiple Allele Traits
33.9K
The Concept of Multiple Allelism
33.9K
