对与MAST4相关的神经发育障碍的遗传和临床见解
Xiaohong Zheng1, Foyang Fan1, Bin Lei1
1College of Clinical Medicine for Obstetrics & Gynecology and Pediatrics, Fujian Medical University, Fujian Children's Hospital (Fujian Branch of Shanghai Children's Medical Center), Fuzhou City, China.
Frontiers in pediatrics
|July 14, 2025
概括
MAST4基因的新变异与神经发育障碍有关. 在患有全球发育迟缓的儿童身上发现了一种新的MAST4变异,扩大了已知的遗传和表型谱.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 发育生物学 发展生物学
背景情况:
- MAST4基因的新变异越来越多地被认为是神经发育障碍 (NDD) 的原因.
- 与MAST4相关的NDD的全谱临床表现和基因型-表型相关性尚未完全理解.
研究的目的:
- 报告一个新的MAST4变异在一个中国儿童的全球发育迟缓 (GDD).
- 进一步划分与MAST4相关的神经发育障碍的基因型-表型相关性.
主要方法:
- 从一个被诊断患有MAST4相关的NDD的试验对象的临床和遗传数据的回顾性分析.
- 基于三元的全外因子测序 (WES) 和桑格测序用于识别和验证致病变体.
主要成果:
- 一名4岁的男性试验者出现了GDD,智力,运动和语言障碍,以及脑MRI上的延迟髓化.
- 在一个保存的残留物中,WES发现了一种新型的, de novo异构的MAST4误解变异 (c.4142G>T,p.Arg1381Leu).
- 与之前的5例病例进行比较,证实了GDD和白质异常是核心特征,但该患者没有婴儿凸显了临床异质性.
结论:
- 这项研究加强了MAST4在神经发育障碍中的作用.
- 这些发现扩大了MAST4相关的NDD的已知遗传和表型谱.
- 随着婴儿的缺乏,可变的表达性表明,需要进一步的功能研究来阐明MAST4的病原性和神经生物学机制.
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