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Planning multi-arm screening studies within the context of a drug development program

James M S Wason1, Thomas Jaki, Nigel Stallard

  • 1Hub for Trials Methodology Research, MRC Biostatistics Unit, Cambridge, U.K. james.wason@mrc-bsu.cam.ac.uk

Statistics in Medicine
|March 27, 2013
PubMed

Insights

This study optimizes clinical trial screening by simultaneously testing multiple treatments. It finds that including many treatments is best when only one proceeds, but fewer are optimal when multiple can advance.

Area of Science:

  • Clinical Trial Design
  • Pharmaceutical Development
  • Biostatistics

Background:

  • Screening trials identify promising interventions for large confirmatory trials.
  • Previous research focused on sequential testing of treatments.
  • Optimizing screening trial efficiency is crucial for drug development sponsors.

Purpose of the Study:

  • To investigate simultaneous multi-treatment screening trial designs.
  • To develop methods for finding optimal numbers of treatments and sample sizes per treatment.
  • To compare different screening and confirmatory trial progression strategies.

Main Methods:

  • Derivation of analytic formulae for expected patients to find a successful treatment.
  • Methodology for optimizing the number of simultaneous treatments and sample size per treatment.
  • Comparison of screening designs with single-treatment vs. multi-treatment confirmatory trials.

Main Results:

  • Simultaneous multi-treatment screening can be more efficient than sequential testing.
  • Optimal number of treatments depends on whether one or multiple treatments advance.
  • A large number of treatments is optimal when only one proceeds; fewer treatments are optimal when multiple can proceed.

Conclusions:

  • Simultaneous screening trial designs offer an efficient alternative to sequential testing.
  • The optimal design balances the number of treatments and sample size per treatment.
  • Findings provide practical guidance for planning efficient drug development screening phases.
Keywords:
multi-arm multi-stage trialsoptimal designphase II trialsscreening trials

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