与CGG重复增加的神经元内核包容性疾病相关的视网膜病变中的基因型-表型相关性 NOTCH2NLC
Natsuko Nakamura1,2,3, Kazushige Tsunoda4, Akihiko Mitsutake5,6
1Department of Ophthalmology, The University of Tokyo, 7-3-1 Hongo Bunkyo-Ku, Tokyo, 113-8655, Japan. nakamura-ntk@umin.ac.jp.
Journal of neurology
|February 28, 2026
概括
在NOTCH2NLC中扩大的CGG重复会导致神经元内核包容性疾病 (NIID) 相关的视网膜病变的早期眼部症状. 重复数与视网膜功能障碍的严重程度相关,作为潜在的生物标志物.
科学领域:
- 眼科医生 眼科 眼科
- 遗传学 遗传学是一种遗传学.
- 神经学 神经学
背景情况:
- 神经内核包容性疾病 (NIID) 是一种进展性神经退行性疾病.
- 视网膜病变是NIID的一个显著的临床表现,影响视觉功能.
- 了解基因型-表型相关性对于管理NIID相关的视网膜病变至关重要.
研究的目的:
- 研究NOTCH2NLC基因中CGG重复扩张和NIID患者视网膜病变的临床表现之间的关系.
- 为了确定与NIID相关的视网膜病变中疾病严重程度和进展的潜在生物标志物.
- 为了确定晚发NIID患者与眼部表现的队列中的基因型-表型相关性.
主要方法:
- 研究了13名临床诊断晚发NIID的患者 (62-81岁).
- 进行全面的眼科检查,包括BCVA,戈德曼周边测量, fundus摄影,FAF,OCT和ERG.
- 量化了NOTCH2NLC基因中的CGG重复数,并将其与临床和电生理学发现相关联.
主要成果:
- 在NOTCH2NLC.中,所有患者都表现出扩展的CGG重复 (100-177单位).
- 在大多数患者中,眼部症状在认知衰退之前,有些人报告在20多岁时出现症状.
- FAF显示信号下降,OCT显示EZ缺失,ERG显示棒功能障碍. CGG重复的数量与ERG振幅有显著的相关性,特别是在适应光线条件下.
结论:
- 在NOTCH2NLC中扩大的CGG重复与NIID中眼部症状的早期发作有关.
- 在NOTCH2NLC中CGG重复的数量作为NIID相关视网膜病变中视网膜功能障碍严重程度的可靠生物标志物.
- 这些发现提高了对NIID病理生理学和视力障碍的理解,指导了临床管理和治疗策略.
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