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10. Implementation of an adaptive group sequential design in a bioequivalence study.

Author

Bandyopadhyay N and Dragalin V

Subjects
Antineoplastic Agents pharmacokinetics, Area Under Curve, Cross-Over Studies, Humans, Therapeutic Equivalency, Antineoplastic Agents therapeutic use, Neoplasms drug therapy
Abstract

The study design was a multi-center, multiple-dose, randomized, open-label, 2 x 2 crossover study in patients with advanced solid tumors. Each patient was randomized to receive the test formulation or the reference formulation of the drug. The primary objective of the study was to demonstrate the bioequivalence of the test formulation T relative to the reference formulation R. The primary pharmacokinetic endpoints were AUC and Cmax. Since there were different bioequivalence criteria, different endpoints, with different and highly variable coefficients of variation, an adaptive design with a stopping rule for early establishing the bioequivalence as well as early stopping for futility with a flexible information-based monitoring based on error spending approach was implemented to manage uncertainty in assumptions of variability and expected slow enrollment rates., (Copyright (c) 2007 John Wiley & Sons, Ltd.)

Published
2007
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