评估长效注射产品等离子体暴露的基于模型的推断:从单剂量到多剂量试验
D Esther Lubberts1,2, Douglas J Eleveld1, Laurens F M Verscheijden2,3
1Department of Anesthesiology, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands.
CPT: pharmacometrics & systems pharmacology
|December 15, 2025
概括
通过使用单剂量药理动力学数据,可以开发预测多剂量后长效注射剂 (LAI) 释放药物的模型. 这表明药物释放可能在已批准的LAI单剂和多剂条件之间相似.
科学领域:
- 药理动力学 药理动力学
- 药物开发 药物开发
- 监管科学 监管科学
背景情况:
- 长效注射产品 (LAI) 通过延长药物释放时间来改善患者的坚持和结果.
- 监管指南要求进行单剂和多剂试验,以评估药物释放的一致性.
- 试验的复杂性可能会阻碍新 LAI 的发展.
研究的目的:
- 为了调查药物从LAI释放是否在单剂和多剂剂管理之间有所不同.
- 用单剂量数据评估多剂量药理动学的可预测性.
- 通过减少试验复杂性来评估简化LAI开发的潜力.
主要方法:
- 使用了来自五个监管机构批准的LAI的临床药理动力学 (PK) 数据.
- 在单剂量数据上使用非线性混合效应建模,开发了具有不同吸收结构的种群PK模型.
- 通过预测多次剂量管理的PK配置文件并根据观察到的数据评估准确性来验证模型.
主要成果:
- 单剂量LAI吸收最好用第一阶吸收模型来描述.
- 预测的多剂量PK资料显示平均准确率为93% (范围:70%-122%).
- 在十个PK变量中,有七个满足了多剂量预测的预定义接受标准.
结论:
- 多次LAI剂量后的药理动力学特征可以从单剂量PK模型中预测.
- 从研究的LAI中释放的药物似乎在单剂和多剂量条件之间一致.
- 需要对不同的 LAI 进行进一步的研究,以确认可概括性和模型限制.
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