适应性2/3阶段设计与剂量优化
Cong Chen1, Mo Huang1, Xuekui Zhang2
1Biostatistics and Research Decision Sciences, Merck & Co., Inc., Rahway, NJ 07065, USA.
Contemporary clinical trials
|August 19, 2025
概括
美国食品药品监督管理局 FDA FDA
科学领域:
- 瘤学 药物开发 药物开发
- 生物统计学 生物统计学
- 临床试验设计 临床试验设计
背景情况:
- 美国食品和药物管理局的Project Optimus旨在优化瘤药物剂量,以提高疗效和安全性.
- 适应性2/3期设计用于剂量选择,通常采用反向正常组合测试来控制I型错误.
- 过于保守的测试会导致I型错误,增加样本大小和延迟时间表,这阻碍了Project Optimus的采用.
研究的目的:
- 解决适应性瘤学试验设计中的I型错误膨胀问题.
- 调查早期剂量选择对长期疗效和安全结果的影响.
- 建议在符合 Project Optimus 的试验中改进剂量选择方法.
主要方法:
- 讨论根据中间数据选择次优剂量的概率的估计.
- 在现实的临床试验环境中分析这种概率对I型错误率的影响.
- 开发和整合两个新的方法,明确考虑这种概率.
主要成果:
- 传统的逆正常组合测试可以导致显著的I型错误膨胀.
- 与传统方法相比,提出的方法证明了I型错误控制的改进.
- 准确估计亚最佳剂量选择的概率对于可靠的试验设计至关重要.
结论:
- 拟议的方法在适应性瘤学试验中提供了增强的I型错误控制.
- 这些改进的设计可以减轻样本大小的增加和时间表延迟.
- 采用这些方法可能会鼓励人们更加坚持FDA的Project Optimus倡议,从而彻底改变瘤学药物开发.
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