与CTNNB1相关的疾病:来自法国队列的临床和放射学贡献
Eline Chauvet-Piat1,2, Marie-Céline François-Heude1, Gaël Manes3
1Department of Pediatric Neurology, Montpellier University Hospital, Montpellier, France.
Frontiers in neurology
|March 6, 2026
概括
CTNNB1基因中的致病变体与脑有关,导致发育迟缓,运动问题如高血压和步态问题以及行为障碍. 这项研究扩大了对CTNNB1相关综合征及其复杂的神经特征的理解.
科学领域:
- 遗传学 是一个遗传学.
- 神经学 神经学
- 儿科 儿科 儿科
背景情况:
- 在CTNNB1基因中单基因病原体变异与高达4%的遗传决定性脑病例有关.
- 与CTNNB1变异相关的全表型谱仍然不完全定义.
研究的目的:
- 追溯分析具有致病性CTNNB1变异的个体的临床和神经成像特征.
- 扩大对CTNNB1相关综合征的表型和相关的大脑异常的理解.
主要方法:
- 对25名具有致病性CTNNB1变异的个体进行了回顾性分析.
- 审查医疗记录,问卷,遗传数据,围产史,发育里程碑,行为和神经评估以及脑部核磁共振.
主要成果:
- 在25个个体中发现了22种不同的异构卵性CTNNB1变体.
- 常见的发现包括小头症 (16/22),全球发育迟缓,步行迟缓 (平均2.1年),运动回归 (4/16),行为障碍,口腔感觉运动缺陷 (21/25),睡眠障碍 (13/21) 和下肢高血压 (22/25).
- 大脑MRI揭示了一些异常,如前面的指导层变厚,额叶的低成形,上方的Vermian sulci扩大,以及体异常.
结论:
- 这项研究扩大了已知CTNNB1相关综合征的表型,突出了具有步态障碍,潜在运动恶化和过度惊反射的复杂运动障碍.
- 描述了与CTNNB1变种相关的新型非特异性脑异常.
- 这些发现强调需要进行注册和纵向研究,以进一步描述这种综合征,并为治疗策略提供信息.
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