在LMAN2L中出现的新型化合物异构基突变会导致幼儿期耐火性
Teng Wang1, Yan Gao1, Yuhan Yan1
1Department of Pediatrics, Qilu Hospital of Shandong University, Jinan, China.
Italian journal of pediatrics
|April 12, 2025
概括
新的LMAN2L基因变异导致婴儿严重智力障碍和耐药性. 这项研究确定了两种与早期发作的和发育迟缓相关的新型化合物异合体变异,扩大了已知的LMAN2L突变谱.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 儿科 儿科 儿科
背景情况:
- 自体递归性精神迟缓-52 (MRT52) 的特征是全球发育迟缓,严重的智力障碍和儿童早期的发作.
- 之前的研究将LMAN2L基因突变与三个家族的精神障碍和发作联系起来.
- 这项研究重点关注两个患有严重智力障碍和药物耐药性 (DRE) 的儿童,从两个月大开始.
研究的目的:
- 在两个儿科患者身上调查严重智力障碍和耐药性的遗传基础.
- 为了识别与这些神经疾病相关联的LMAN2L基因中的新型变异.
主要方法:
- 整体外基因组测序 (WES) 在一个家庭的两个受影响个体上进行.
- 临床数据,包括发作特征,脑电图,神经成像和治疗反应,被追溯分析.
- 鉴定和分析LMAN2L基因变异.
主要成果:
- 在 LMAN2L 基因 (c.476A>G,p.D159G 和 c.1060_1061del,p.S354Pfs*29) 中发现了两种新型化合物异质合体变异在两个孩子身上.
- 两位患者均表现出严重的产后精神运动发育滞后和早期发作的发作 (2个月大).
- 的特点是多种发作类型,并且被证明对多种抗药物具有耐药性.
结论:
- 在LMAN2L中的复合异构基因突变与耐火性有关,在婴儿期早期出现发育迟缓.
- 这是第一个将LMAN2L与性脑病和抗药性现象联系起来的报告.
- 已识别的LMAN2L变体 (p.D159G和p.S354Pfs*29) 被认为可能具有致病性,扩大了已知的LMAN2L相关疾病的范围.
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