累积暴露于ocrelizumab对多发性硬化症中B细胞重置记忆动力学的影响
Giulio Disanto1,2, Rosaria Sacco1, Giulia Mallucci1
1Multiple Sclerosis Center, Department of Neurology, Neurocenter of Southern Switzerland (NSI), Regional Hospital of Lugano, Ente Ospedaliero Cantonale, Lugano, Switzerland.
Annals of neurology
|June 11, 2025
概括
用于多发性硬化症 (MS) 的延长间隔剂量使用ocrelizumab (OCR) 显示,在较高的累积剂量下,记忆B细胞的重新填充速度较慢. 年龄和性别影响这些动态,为MS患者的未来治疗策略提供信息.
科学领域:
- 神经学 神经学
- 免疫学 免疫学 免疫学
- 药理学 药理学是指药理学的学科.
背景情况:
- 对于多发性硬化症 (MS),B细胞消耗疗法如ocrelizumab (OCR) 的延长间隔剂量正在出现.
- 目前的延长间隔剂量协议往往缺乏数据驱动的基础来确定输液间隔.
- 了解B细胞重组动态对于优化延长剂量策略至关重要.
研究的目的:
- 在接受OCR的MS患者中,描述B细胞重新填充动态,使用记忆B细胞引导的延长间隔剂量协议.
- 调查影响B细胞重组的因素,包括累积的OCR剂量,年龄和性别.
- 为MS治疗提供个性化延长间隔剂量策略的开发提供信息.
主要方法:
- 奥克雷利祖马布 (OCR) 的使用是根据外围CD19+CD27+记忆B细胞计数指导的,输液在达到≥1细胞/μL时进行.
- 使用光激活细胞分类来监测B细胞群 (CD19+和CD19+CD27+).
- 混合效应的障碍模型被用来分析输液后的时间,累积剂量和B细胞计数之间的关联,计算速率比率 (RR) 和赔率比率 (OR).
主要成果:
- 分析了来自101名多发性硬化症患者的1369个样本 (61.4%为女性,中位数年龄为42.2岁),平均随访时间为4.1年.
- 自最后一次OCR输液以来的时间与CD19+总B细胞 (RR=1.11) 和CD19+CD27+记忆B细胞 (RR=1.11) 呈正相关.
- 较高的累积OCR剂量与持续的记忆B细胞枯竭 (OR=1.90) 有关,而年龄较大与总B细胞再生缓慢相关 (RR=0.82). 女性患者的记忆与总B细胞的比率较低 (RR=0.42).
结论:
- 在ocrelizumab治疗后,记忆B细胞的重新填充会随着累积剂量增加而减缓.
- 年龄和性别似乎是影响扩大OCR剂量的MS患者B细胞重组动态的重要因素.
- 这些发现支持在设计MS中使用ocrelizumab的延长间隔剂量策略时考虑B细胞重组动力学,特别是记忆B细胞.
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