c.231+4A>C热点变体与一种新的神经发育综合征有关:第一个患者队列
Sivan Reytan Miron1, Alina Kurolap1, Bassam Abu-Libdeh2
1The Genetics Institute and Genomics Center, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
Journal of medical genetics
|April 9, 2025
概括
在儿童中发现了一种由LSM1基因变异c.231+4A>C引起的新型遗传疾病. 这种变异导致神经发育问题和多系统性问题,使LSM1成为引起疾病的基因.
科学领域:
- 遗传学和分子生物学
- 人类遗传学 人类遗传学
- 神经发育障碍 神经发育障碍
背景情况:
- LSM1基因对于信使RNA (mRNA) 代谢至关重要.
- 之前的报道表明LSM1变种的潜在作用,但病原性没有得到证实.
- 在两个单独的病例报告中确定了LSM1变异.
研究的目的:
- 研究LSM1基因在儿科综合征病例中的作用.
- 为了确定LSM1c.231+4A>C变种的致病性.
- 描述新型LSM1相关疾病的临床和分子特征.
主要方法:
- 六名儿科患者的外体序列测序和详细的表型.
- 用于患者识别和面部特征分析的GeneMatcher和GestaltMatcher.
- 通过RT-qPCR确认拼接缺陷,并对变种起源进行哈普洛型分析.
主要成果:
- 六名患有同卵性c.231+4A>C LSM1变异的患者呈现出综合征特征,包括异形面部,发育迟缓和多系统性参与.
- 这种c.231+4A>C变体会导致表因子跳转,导致可以忽略不计的野生型LSM1mRNA和高突变异型表达,证实了病原性.
- 该变种在穆斯林阿拉伯人和阿什基纳兹犹太人口中被发现,这表明它是一种热点变种.
结论:
- 同卵性LSM1c.231+4A>C变体导致一种新型的自身逆性综合征神经发育障碍.
- 这项研究扩大了对LSM1相关疾病的理解.
- 进一步研究这种疾病的分子机制是有必要的.
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