Physiologically-based Pharmacokinetic (PBPK) Modeling in Regulatory Science: An Update from the US Food and Drug Administration's Office of Clinical Pharmacology.

This commentary provides an update on the status of physiologically based pharmacokinetic modeling and simulation at the U.S. Food and Drug Administration's Office of Clinical Pharmacology. Limitations and knowledge gaps in integration of physiologically based pharmacokinetic approach to inform regulatory decision making, as well as the importance of scientific engagement with drug developers who intend to use this approach, are highlighted.