Deriving mechanism-based pharmacodynamic models by reducing quantitative systems pharmacology models: An application to warfarin.
CPT Pharmacometrics Syst Pharmacol
; 12(4): 432-443, 2023 04.
Article
em En
| MEDLINE
| ID: mdl-36866520
ABSTRACT
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.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Farmacologia
/
Varfarina
Tipo de estudo:
Qualitative_research
Limite:
Humans
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article