TY  - JOUR
A1  - Falkenhagen, Undine
A1  - Knöchel, Jane
A1  - Kloft, Charlotte
A1  - Huisinga, Wilhelm
T1  - Deriving mechanism-based pharmacodynamic models by reducing quantitative systems pharmacology models
T2  - CPT: Pharmacometrics & Systems Pharmacology
N2  - Quantitative systems pharmacology (QSP) models integrate comprehensive qualitative and quantitative knowledge about pharmacologically relevant processes. We previously proposed a first approach to leverage the knowledge in QSP models to derive simpler, mechanism-based pharmacodynamic (PD) models. Their complexity, however, is typically still too large to be used in the population analysis of clinical data. Here, we extend the approach beyond state reduction to also include the simplification of reaction rates, elimination of reactions, and analytic solutions. We additionally ensure that the reduced model maintains a prespecified approximation quality not only for a reference individual but also for a diverse virtual population. We illustrate the extended approach for the warfarin effect on blood coagulation. Using the model-reduction approach, we derive a novel small-scale warfarin/international normalized ratio model and demonstrate its suitability for biomarker identification. Due to the systematic nature of the approach in comparison with empirical model building, the proposed model-reduction algorithm provides an improved rationale to build PD models also from QSP models in other applications.
Y1  - 2023
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/64373
SN  - 2163-8306
VL  - 12
IS  - 4
SP  - 432
EP  - 443
PB  - Wiley
CY  - Hoboken
ER  -