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Updated: Oct 14, 2025

A Clinical Trial Assessing the Safety, Efficacy, and Delivery of Olive-Oil-Based Three-Chamber Bags for Parenteral Nutrition
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Advantages of multi-arm non-randomised sequentially allocated cohort designs for Phase II oncology trials

Helen Mossop1, Michael J Grayling1, Ferdia A Gallagher2

  • 1Population Health Sciences Institute, Newcastle University, Newcastle upon Tyne, UK.

British Journal of Cancer
|November 9, 2021
PubMed
Abstract

Insights

The Multi-Arm Sequential Trial with Efficient Recruitment (MASTER) design is more efficient for Phase II cancer trials. This adaptive design optimizes drug evaluation, especially with quick recruitment or delayed outcomes.

Area of Science:

  • Clinical Trial Design
  • Oncology Drug Development
  • Biostatistics

Background:

  • Efficient Phase II trial designs are crucial for prioritizing promising cancer drugs.
  • Adaptive designs enhance efficiency but can be hampered by delayed patient response assessments.
  • Current methods require optimization for evaluating multiple treatment arms effectively.

Purpose of the Study:

  • To compare the efficiency of three distinct trial designs for evaluating multiple treatment arms in Phase II oncology studies.
  • To introduce and evaluate the Multi-Arm Sequential Trial with Efficient Recruitment (MASTER) design.
  • To assess the impact of endpoint delay and recruitment speed on trial efficiency.

Main Methods:

  • Simulation study comparing three trial designs: sequential single-arm trials, parallel multi-arm multi-stage, and the MASTER design.
  • The MASTER design involves sequential recruitment to treatment arms with interim analysis pauses.
  • Evaluation based on the time required to assess multiple new treatment arms.

Main Results:

  • Both the parallel multi-arm multi-stage and MASTER designs significantly outperform sequential single-arm trials.
  • The MASTER design demonstrates superior efficiency, particularly when facing endpoint delays or rapid patient recruitment.
  • MASTER design offers enhanced efficiency in evaluating multiple oncology treatments.

Conclusions:

  • The MASTER design is recommended as a highly efficient approach for non-comparative Phase II trials of multiple cancer treatments.
  • This adaptive design optimizes resource allocation and accelerates drug evaluation timelines.
  • MASTER design addresses key challenges in modern oncology clinical trials.

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