Search the PBPK Model Repository

Quickly find freely available drug and population models in our PBPK model repository.

The models provided have been collated from published examples which authors have shared in our Published Model Collection or developed as part of various global health projects in our Global Health Collection. This search facility searches both model collections simultaneously.

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Found 147 Matches

Brand Name(s) include: Jasoprim, Malirid, Neo-Quipenyl, Pimaquin, Pmq, Primachina, Primacin, Primaquina, Primaquine, Primaquine diphosphate, Primaquine Phosphate, and Remaquin

Disease: Malaria, Plasmodium vivax, Plasmodium ovale

Drug Class: Antimalarial

Related Files: Carboxyprimaquine (metabolite)

Date Updated: March 2022

 The model at-a-glance

Absorption Model

  • First-Order

Volume of Distribution 

  • Full PBPK (Method 2)

Routes of Elimination

  • 89% MAO (entered using ‘user-UGT’ as a surrogate in the Simulator), 11% CYP2D6

Perpetrator DDI

  • CYP1A2 Inhibitor (in vitro)

Validation

  •  6 studies with single (15 to 45 mg) and multiple (15 mg QD) dosing. 100% of Cmax and AUC values within 1.5-fold.
  • No clinical DDI studies to verify contribution of metabolic routes

Limitations

  •  The active metabolites of primaquine have not characterized due to their instability. Therefore, a PBPK model for active metabolites cannot be developed in their own right.
  • Qualitative data suggests a role of P-gp, however, Jmax and Km values have not been measured.
  • There is evidence of enantiomer specific metabolism for primaquine which has not been considered in the current model.

Updates in Version 19

  • Updated in vitro protein and blood binding data and subsequent back calculation of CLint (retrograde approach)
    •  fu: 0.19 -> 0.26
    • B:P: 1 -> 0.82
  • Converted from minimal PBPK model to full PBPK model

 

Aprepitant_RES_V19R1_Simcyp_20200205

Simcyp developed Aprepitant compound file. Compound summary included. This was developed as a research file and its current status and limitations are outlined in summary document.

Tizanidine_RES_V18R1_Simcyp_20190809

Simcyp developed tizanidine compound file. Compound summary included. This was developed as a research file and its current status and limitations are outlined in summary document.

Cholesterol_4beta-hydroxycholesterol_RES_V23_Simcyp_20240930

The 4β-hydroxycholesterol (4β-OHC) file is an endogenous biomarker for CYP3A activity mainly measured to evaluated potential CYP3A induction in vivo. The 4β-OHC file was developed as a primary metabolite of the parent compound, cholesterol. As the compound requires specific system parameter inputs for endogenous CYP abundance scaling, the parent-metabolite file is available within a workspace containing the required system parameters. The parent-metabolite file has been developed in the Simcyp Simulator V23 and details of the file performance are described in Karkhanis et al., 2024 (PMID 39458613) and in a compound summary that provides the key pharmacokinetic features of cholesterol and 4β-OHC considered within the model.

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