与MMACHC c.482G > A突变相关的可变表型和结果:在大型CblC疾病队列中的随访
Sheng-Nan Wu1, Hui-Shu E2, Yue Yu3
1Department of Endocrinology and Metabolism, Henan Key Laboratory of Children's Genetics and Metabolic Diseases, Children's Hospital Affiliated to Zhengzhou University, Henan Children's Hospital, Zhengzhou Children's Hospital, No. 255 Gangdu Street, Zhengzhou, China.
在CblC疾病中的MMACHC c.482G>A突变与较轻的症状和更好的结果有关,特别是当通过新生儿查早期诊断时. 早期发现和治疗显著改善了患者的预后.
科学领域:
- 遗传学和基因组学 在
- 代谢障碍 代谢障碍 代谢障碍
- 生物化学 生物化学
背景情况:
- 甲基马龙酸性尿和类型C (CblC) 的同胞性尿病是一种罕见的代谢障碍.
- 在维生素B12代谢中,MMACHC基因起着至关重要的作用.
- 特定的突变,如c.482G>A,可以导致不同的临床表现.
研究的目的:
- 在中国患有MMACHC c.482G>A突变的患者中描述CblC疾病的表型和结果.
- 为了比较有或没有c.482G>A变异的患者之间的临床特征和治疗反应.
- 评估早期诊断的影响,特别是通过新生儿查 (NBS),对患者的结果.
主要方法:
- 一项对195名患有MMACHC c.482G>CblC疾病A变异的中国患者进行的回顾性多中心研究.
- 一组对照组由200名没有c.482G>A突变的CblC患者组成.
- 对临床特征,生化代谢物,基因突变和随访结果的详细分析,平均为3年8个月.
主要成果:
- 与其他变体相比,c.482G>A变体与较晚出现症状和较轻微的临床表现有关.
- 患有c.482G>A突变的患者在治疗前显示了某些代谢物 (propionylcarnitine,homocysteine) 的水平明显降低.
- 新生儿查 (NBS) 在大多数情况下导致无症状诊断,与晚发症诊断相比,结果明显更好,死亡率更低,精神运动发育改善.
结论:
- 在CblC疾病中,MMACHC c.482G>A变异与较温和的表型和更好的神经结果有关.
- 通过NBS早期诊断和及时治疗,包括可胺,对于有利的临床结果至关重要.
- 这种特异性突变可能表明对治疗的反应相对更好,并改善了代谢控制.
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
03:45Investigating the Pathogenesis of MYH7 Mutation Gly823Glu in Familial Hypertrophic Cardiomyopathy using a Mouse Model
Published on: August 8, 2022
相关概念视频
Genetic Lingo
Mutations
Lethal Alleles
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...
Mismatch Repair
The Mutator Protein Family Plays a Key Role in DNA Mismatch Repair
The human genome has more than 3 billion base pairs of DNA per cell. Prior to cell division, that vast amount of genetic...
Genome-wide Association Studies-GWAS
GWAS does not require the identification of the target gene involved in...
Multiple Allele Traits
