在早产和满期婴儿中,克莱斯罗维马布的种群药动力学
Ziheng Hu1, Farina Hellmann2, Xiaowei Zang1
1Merck & Co., Inc., Rahway, New Jersey, USA.
Clinical pharmacology and therapeutics
|January 27, 2026
概括
克莱斯罗维马布是一种用于预防呼吸道同胞病毒 (RSV) 的单克隆抗体,在婴儿中显示出可预测的药理动力学. 体重,年龄和种族对克莱斯罗维马布暴露的影响最小,支持在所有婴儿中使用它.
科学领域:
- 药理学 药理学是指药理学的学科.
- 免疫学 免疫学 免疫学
- 儿科 儿科 儿科
背景情况:
- 克莱斯罗维马布是一种新型,半衰期延长的单克隆抗体,旨在向呼吸道同胞病毒 (RSV) 融合蛋白.
- 评估clesrovimab在婴儿中的药理动力学 (PK) 概况对于建立安全有效的剂量策略来预防RSV疾病至关重要.
研究的目的:
- 为婴儿使用克莱斯罗维马布开发一个人群PK模型.
- 评估内在因素 (如体重,年龄,种族) 和外在因素对儿科患者中克莱斯罗维马布PK的影响.
主要方法:
- 在三个临床研究 (MK-1654-002,CLEVER,SMART) 中,利用来自2942名婴儿的5850个样本进行了人口PK分析.
- 采用一级吸收和排泄的两部分模型来描述克莱斯罗维马布PK的特征.
- 共变量分析确定了体重,婴儿年龄 (通过成熟功能) 和种族作为影响PK参数的重要因素.
主要成果:
- 婴儿中克莱斯罗维马布的PK被一个两模型描述得很好,估计半衰期为44.0天.
- 体重被纳入清除和体积参数的共变量,使用全米缩放.
- 一个成熟的功能解释了与年龄相关的清除变化,种族也作为一个共同变量.
- 尽管具有统计学意义,但确定的共同变量 (体重,年龄,种族) 对克莱斯罗维马布暴露的影响很小 (<30%).
结论:
- 开发的人口PK模型提供了对婴儿clesrovimab处置的强有力的理解.
- 共同变量对克莱斯罗维马布暴露的最小影响支持肌内注射用于所有婴儿的RSV疾病预防,包括高风险婴儿.
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