案例报告:两位兄弟姐妹的复合异合体KCTD7变体呈现肌性和缺氧
Jingjing Song1, Wenlin Wu1,2, Yang Tian1
1Department of Neurology, Liuzhou Hospital, Guangzhou Women and Children's Medical Center, Liuzhou, China.
Frontiers in neuroscience
|November 28, 2025
概括
这项研究在患有渐进性肌细胞性 (PME) 的兄弟姐妹中发现了新的KCTD7基因变异. 研究结果表明,免疫疗法可能为KCTD7突变的PME患者提供部分益处.
科学领域:
- 遗传学 遗传学 是一个
- 神经学 神经学
- 分子生物学分子生物学
背景情况:
- 渐进性肌细胞性 (PME) 是一种罕见的,自体逆性神经退行性疾病.
- 基因KCTD7中的双变异与早期发病的PME有关,其特征是发作,认知衰退,肌细胞结合和动力衰竭.
研究的目的:
- 在被诊断患有PME的兄弟姐妹中识别和描述新的KCTD7变异.
- 扩大对KCTD7相关疾病的遗传和表型谱的理解.
- 评估免疫疗法在管理 PME 症状方面的潜在疗效.
主要方法:
- 采用全外体序列测序来识别试验中的候选变异.
- 使用in silico病原性预测工具和结构建模来评估变体影响.
- 桑格测序验证了家族中的变异分离.
- 分析了包括EEG和MRI在内的临床数据.
主要成果:
- 两名兄弟姐妹因复合异质合体KCTD7变异而出现PME:一种可能致病的父变异 (c.334C>T,p.Arg112Cys) 和一种新的,不确定的意义的母变异 (c.640C>T,p.Arg214Trp).
- 两位患者均表现出早期发作的,发育回归和神经系统恶化.
- 免疫疗法在试验中显示出部分临床益处,改善了控制和步行,尽管认知缺陷仍然存在.
结论:
- 这项研究扩大了与 PME 相关的已知 KCTD7 变异谱.
- 对于早期发作的神经退行性综合征来说,全面的基因检测至关重要.
- 需要进一步的功能研究来阐明新型KCTD7变异的临床意义.
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