Statistical and Practical Considerations in Planning and Conduct of Dose Optimization Trials
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The US Food and Drug Administration launched Project Optimus with the aim of shifting the paradigm of dose-finding and selection towards identifying the optimal biological dose that offers the best balance between benefit and risk, rather than the maximum tolerated dose. However, achieving dose optimization is a challenging task that involves a variety of factors and is considerably more complicated than identifying the maximum tolerated dose, both in terms of design and implementation. This article provides a comprehensive review of various design strategies for dose optimization trials, including phase I/II and II/III designs, and highlights their respective advantages and disadvantages. Additionally, practical considerations for selecting an appropriate design and planning and executing the trial are discussed. The article also presents freely available software tools that can be utilized for designing and implementing dose optimization trials. The approaches and their implementation are illustrated through real-world examples.
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