在患有和全球发育迟缓的患者中发现了一种新型的框架转移CUX2变体:表型和基因型扩张
Ferruccio Romano1, Mohammad Sadegh Shams Nosrati2, Francesca Madia3
1Genomic and Clinical Genetics Unit, IRCSS Istituto G. Gaslini, Genoa, Italy.
European journal of medical genetics
|December 4, 2025
概括
在一个患有DEE67.7特征的患者身上发现了CUX2基因的新型框架转移变异. 这一发现扩大了CUX2相关疾病的已知遗传原因,并表明了作为一种致病机制的哈普隆缺陷.
科学领域:
- 遗传学 是一个遗传学.
- 神经科学是一个神经科学.
- 发展生物学 发展生物学
背景情况:
- CUX2基因对于神经元发育至关重要.
- CUX2中的致病变体会导致发育性和性脑病变67 (DEE67),这是一种严重的神经疾病.
- 大多数已知的CUX2变体都是错误的,对移变体的数据有限.
研究的目的:
- 报告CUX2基因中的一个新的de novo框架转移变异.
- 在患有DEE67.7的患者中研究这种变异的致病性.
- 扩大对CUX2相关疾病的基因型和表型谱的理解.
主要方法:
- 对一个患有DEE67症状的8岁女孩的临床评估.
- 在CUX2基因中发现和描述了一种新型de novo框架转移变异 (c.633_636del p.
- 变异效应的in silico预测,包括无意中介衰变 (NMD) 和单元不充分.
主要成果:
- 在该患者身上发现了CUX2的新型框架转移变异.
- 预计这种变异会导致功能丧失,导致CUX2的哈普隆缺陷.
- 患者呈现出比DEE67.7中通常观察到的更轻微的现型.
结论:
- 这项研究扩大了CUX2相关疾病的基因型谱.
- 证据支持CUX2的哈普洛因不足作为DEE67.7的致病机制.
- 与CUX2变异相关的较温和的临床表现扩大了DEE67.7的表型谱.
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