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基因治疗后脊柱肌肉缩的累积运动指数:基线预测最大恢复

Rémi Barrois¹, Christine Barnerias², Anaïs Hervé³

¹Clinical Neurophysiology Department, AP-HP, Hôpital Necker Enfants Malades, Paris, France; Centre Borelli - UMR 9010 Centre Borelli, Gif-sur-Yvette, France; Paris Cité University, Paris, France.

Clinical neurophysiology : official journal of the International Federation of Clinical Neurophysiology

|September 2, 2025

概括

基线累积运动指数 (CMI) 预测脊柱肌肉缩 (SMA) 患者基因治疗后最大的复合肌肉动力潜力 (CMAP) 幅度. SMN2基因拷贝数也会影响结果.

科学领域:

神经学
遗传学
生物医学工程

背景情况:

症状早期的脊髓肌缩 (SMA) 是一种严重的遗传神经肌肉疾病.
基因疗法在改善SMA患者的运动功能方面表现有前途.
在接受治疗的SMA患者中,复合肌肉作用电位 (CMAP) 的幅度与运动里程碑相关.

研究的目的:

在基因治疗后36个月内开发CMAP幅度演变的预测模型.
鉴定基因治疗后CMAP幅度变化的关键预测因素.

主要方法:

19名 SMA 患者 (平均年龄为 8. 5 个月) 具有 2 或 3 个 SMN2 副本的前景评估.
测量中枢神经,神经,神经和神经的CMAP幅度.
用CMAP幅度的总和计算累积运动指数 (CMI).

主要成果:

在基因治疗后,CMAP幅度和CMI显著增加,但在24个月后稳定.
在具有2个SMN2副本的患者中,基线CMI强烈预测了36个月最大CMI (R2=0. 97).
患有3个SMN2拷贝的患者达到~10mV的平原,不论基线CMI (R2=0.

结论:

在基因治疗后,CMI是最大CMAP幅度的强大预测指标.
SMN2副本的数量是影响CMAP幅度演变的关键因素.
在SMA中,CMI是指导患者选择和治疗管理的宝贵工具.

关键词:

复合肌肉作用潜力预测分析脊柱肌肉缩

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