arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2006.05026cs.LGstat.APstat.MEstat.ML
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具有安全性约束的适应性临床试验剂量分配的学习

Learning for Dose Allocation in Adaptive Clinical Trials with Safety Constraints

University of Virginia(弗吉尼亚大学);University of Pennsylvania(宾夕法尼亚大学);University of Cambridge(剑桥大学);University of California, Los Angeles(加利福尼亚大学洛杉矶分校)

Cong Shen, Zhiyang Wang, Sofia S. Villar, Mihaela van der Schaar

摘要:

I期剂量探索试验越来越具有挑战性,因为新化合物(或其组合)的疗效和毒性之间的关系变得更加复杂。尽管如此,实践中最常用的方法集中于通过仅从毒性事件中学习来确定最大耐受剂量(MTD)。我们提出了一种新的适应性临床试验方法,称为安全有效性探索剂量分配(SEEDA),其目的是最大限度地提高累积疗效,同时满足高概率的毒性安全约束。我们评估了在实际临床试验中具有操作意义的性能目标,包括累积疗效、推荐/分配成功概率、毒性违背概率和样本效率。一个扩展的SEEDA-Plateau算法,是专为分子靶向药物(MTA)的疗效增加,然后平台的行为。通过使用合成和真实世界数据集的数值实验,我们表明SEEDA通过找到具有更高成功率和更少患者的最佳剂量来优于最先进的临床试验设计。

英文摘要:

Phase I dose-finding trials are increasingly challenging as the relationship between efficacy and toxicity of new compounds (or combination of them) becomes more complex. Despite this, most commonly used methods in practice focus on identifying a Maximum Tolerated Dose (MTD) by learning only from toxicity events. We present a novel adaptive clinical trial methodology, called Safe Efficacy Exploration Dose Allocation (SEEDA), that aims at maximizing the cumulative efficacies while satisfying the toxicity safety constraint with high probability. We evaluate performance objectives that have operational meanings in practical clinical trials, including cumulative efficacy, recommendation/allocation success probabilities, toxicity violation probability, and sample efficiency. An extended SEEDA-Plateau algorithm that is tailored for the increase-then-plateau efficacy behavior of molecularly targeted agents (MTA) is also presented. Through numerical experiments using both synthetic and real-world datasets, we show that SEEDA outperforms state-of-the-art clinical trial designs by finding the optimal dose with higher success rate and fewer patients.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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