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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 99 Matches

Pyrimethamine

Brand Name(s) include: Daraprim

Disease: Malaria

Drug Class: Antimalarials

Date Updated: November 2021

Model at-a-glance

  Absorption Model

  • First-Order

  Volume of Distribution 

  • Full PBPK (Method 2) 

Note: Kp scalar used

  Route of Elimination

  • Non-specific hepatic metabolism (metabolizing enzymes not known)

  Perpetrator DDI

  • OCT1 and OCT2 inhibitor

  Validation

  • Three clinical studies were available for model verification.  100% of simulated Cmax and AUC were within 1.5-fold of observed and hence the model performance was deemed acceptable.

  Limitations

  • The current model does not describe enzyme specific metabolism of pyrimethamine as there are no data for specific routes of metabolism.​

The current model does not mechanistically describe the absorption of pyrimethamine as the ADAM model over-predicts the extent of absorption. Although pyrimethamine is described as well absorbed in some literature, further analysis of the IV and PO data did not support this. 

  Updates in V19

  • Updated in vitro­ data
    • fup: 0.085 -> 0.095

 

Cancer_Population_V10R1_Genentech_20170113
The attached file is the cancer population file that was developed by Genentech in Simcyp V10 and published by Cheeti et al Biopharm. Drug Dispos. (2013).
Creatinine_MechKiM_V16R1_UniversityOfManchester_20210421
https://doi.org/10.1124/jpet.118.251413 Creatinine compound file with MechKiM
Hydroxychloroquine_V18R1_PekingUniversityThirdHospital_20200323
The HCQ file was developed by Peking University Third Hospital and kindly shared on our Members Area. Please cite the original reference in which the file was presented (see link to publication) and please share your simulation results ASAP. Considering the current public health situation, we are happy to coordinate the simulation efforts around this PBPK model. The submitted compound file for HCQ is using first order absorption model, full-PBPK, Method 2. Perfusion limited lung model was developed. Additional organ was defined as lung and changed the tissue blood rate flow as 0.2. Clearance of HLM was estimated based on fm. It has been verified with a Caucasian healthy volunteer population library that was unmodified from the Sim-Healthy Volunteer library file. Please note a custom dosing for 5 days has been included in the file. https://pubmed.ncbi.nlm.nih.gov/32150618/

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