Title（题目）：Design and Analysis Considerations in Clinical Trials With a Sensitive

Subpopulation

Speaker（报告人）：Prof.Yan Daniel Zhao，University of Oklahoma Health Sciences Center at Tulsa

Time（时间）：2012年6月7日（周四）下午03:15-04:15

Place（地点）：成人直播-成人直播室 新楼217教室

Abstract（摘要）：We present research on clinical trials with a sensitive subpopulation of patients, that is, a subgroup that is more likely to benefit from the treatment than the overall population. Given a sensitive subgroup defined by a prespecified classifier, for example, a clinical marker or pharmacogenomic marker, the trial’s outcome is declared positive if the treatment effect is established in the overall population or in the subgroup. We provide a summary of key considerations in clinical trials with a sensitive subgroup, including multiplicity and enrichment adjustments as well as optimality considerations in the analysis strategy. The methodology proposed in this article is illustrated using a neuroscience clinical trial and its operating characteristics are accessed via a simulation study.

Key Words: Clinical trials; Enriched clinical trials; Sensitive population; Type I error rate control; Weighted power.