Article,

Continual reassessment method (CRM)

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Gan To Kagaku Ryoho, 27 (9): 1449-1457 (August 2000)

Abstract

We discuss the basic concept of the continual reassessment method (CRM) and some modifications. The CRM has been proposed as alternatives of traditional cohort design for phase I trials in cancer. To focus on the dilemma between ethical concern and scientific purpose, we review the requirement for the phase I settings and the issues of the traditional cohort design. Then, CRM is introduced so that the essential feature is in the sequential (continual) selection of a dose level for next patients based on the dose-toxicity relationship and in updating the relationship based on patients' response date using Bayesian calculation. Finally we discuss both advantages and pitfalls in practice.

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