在5q脊柱肌肉缩的基因疗法后发生的血栓性微血管病变
Clara Gontijo Camelo1, Rodrigo Holanda Mendonça2,3, Cristiane Araújo Martins Moreno2
1Department of Neurology, Faculdade de Medicina, Universidade de São Paulo (FMUSP), São Paulo, Brazil. claragc@gmail.com.
Gene therapy
|June 18, 2025
概括
血栓性微血管病变 (TMA) 是对脊髓肌肉缩 (SMA) 进行的onasemnogene abeparvovec (OA) 基因疗法的罕见但严重的副作用. 这项研究发现,TMA发生在巴西患者的2.4%中,这突显了迅速识别和管理的必要性.
科学领域:
- 神经学 神经学
- 遗传学 遗传学 是一个
- 血液学 血液学 血液学
背景情况:
- 在asemnogene abeparvovec (OA) 是一种基因替代疗法,用于5q脊椎肌肉缩 (SMA).
- 病毒载体相关的血栓性微血管病变 (TMA) 是OA的严重但不太了解的副作用.
- 巴西SMA患者接受OA治疗的TMA的频率和临床概况以前没有评估过.
研究的目的:
- 为了确定TMA在巴西患者接受OA治疗SMA的频率.
- 在这个人群中描述TMA的临床和实验室特征.
- 确定潜在的风险因素,并为OA相关的TMA提供信息管理策略.
主要方法:
- 对294名巴西5q SMA患者进行了回顾性多中心研究,这些患者接受了OA治疗 (2020年10月 - 2024年9月).
- 对患有TMA的患者的临床数据,实验室结果和结果的分析.
- 在五名患者身上进行了整体外基因组测序,以调查遗传倾向.
主要成果:
- 七名患者 (2.4%) 在OA给药后发生了TMA.
- 输液后6-10天出现TMA症状,其特点是血液溶解性贫血,血栓塞缩和器官功能障碍.
- 在三名患者中发现了输注前感染;通过整个外体序列测序,没有通过TMA发现与TMA相关的致病变体.
结论:
- TMA是对SMA进行的异常治疗的罕见但显著的并发症.
- 早期检测和干预,特别是用皮质类固醇,对于管理TMA和改善患者结果至关重要.
- 需要进一步的研究来阐明病理生理学,并确定在接受OA的患者中TMA的特定风险因素.
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