Drugs Being Eliminated via the Same Pathway Will Not Always Require Similar Pediatric Dose Adjustments.

ABSTRACT: For scaling drug plasma clearance (CLp) from adults to children, extrapolations of population pharmacokinetic (PopPK) covariate models between drugs sharing an elimination pathway have enabled accelerated development of pediatric models and dosing recommendations. This study aims at identifying conditions for which this approach consistently leads to accurate pathway specific CLp scaling from adults to children for drugs undergoing hepatic metabolism. A physiologically based pharmacokinetic (PBPK) simulation workflow utilizing mechanistic equations defining hepatic metabolism was developed. We found that drugs eliminated via the same pathway require similar pediatric dose adjustments only in specific cases, depending on drugs extraction ratio, unbound fraction, type of binding plasma prote

SUBMITTER: Calvier EAM 

PROVIDER: S-EPMC5869561 | biostudies-literature | 2018 Mar

REPOSITORIES: biostudies-literature