Physiologically-based Approaches Towards the Prediction of Pharmacokinetics: In Vitro-In Vivo Extrapolation

In adapting to the challenge to make more informed selection of compounds for development, the pharmaceutical industry is increasingly embracing the application of mechanism-based models and prediction tools for prediction of pharmacokinetic parameters. This review first outlines the concepts and application of the major physiologically based prediction tools to extrapolate clearance, tissue distribution, and rate and extent of absorption from minimal in vitro or animal in vivo input data. Finally, the ability of these prediction tools, when placed within a generic whole body physiologicallybased model of pharmacokinetics, to predict plasma concentration-time profiles is briefly discussed.



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