A next generation physiologically-based kinetic model for quantitative in vitro to in vivo extrapolation of

Kiri G J Romano Olmedo1, Jiaqi Chen1, Ivonne M C M Rietjens1

  • 1Division of Toxicology, Wageningen University and Research, Stippeneng 4, Wageningen 6708 WE, the Netherlands.

Toxicology
|December 1, 2025
PubMed

Insights

New physiologically-based kinetic (PBK) models improve prediction of cisplatin nephrotoxicity. These human-based models incorporate active renal secretion, offering better risk assessment for drug development and patient safety.

Area of Science:

  • Toxicology
  • Pharmacokinetics
  • Computational Biology

Background:

  • * Traditional animal toxicity tests fail to accurately predict human kidney toxicity.
  • * Nephrotoxic chemicals concentrate in proximal tubules due to active uptake transporters.
  • * There is a need for human-based New Approach Methodologies (NAMs) for toxicity testing.

Purpose of the Study:

  • * Develop advanced human physiologically-based kinetic (PBK) models to simulate drug concentrations in plasma and kidneys.
  • * Predict nephrotoxicity of intravenous cisplatin using these PBK models.
  • * Utilize quantitative in vitro to in vivo extrapolation (QIVIVE) for dose prediction.

Main Methods:

  • * Developed two human PBK models: a single-compartment and a multi-compartment kidney model.
  • * The multi-compartment model incorporated organic cation transporter 2 (OCT2)-mediated active renal secretion.
  • * Used literature data on renal cell line cytotoxicity and pharmacokinetic parameters for QIVIVE.

Main Results:

  • * The complex PBK model, incorporating OCT2-mediated secretion, best predicted cisplatin nephrotoxicity at 30% of patients (23.1–65 mg/m²).
  • * Predictions were based on the area under the concentration-time curve (AUC) in the proximal tubule.
  • * Calculated human benchmark dose levels (BMDL30) using in vitro and in silico data.

Conclusions:

  • * Next-generation PBK models incorporating active renal secretion enhance prediction of plasma concentrations and in vivo nephrotoxic doses.
  • * This study demonstrates a case study for advanced risk assessment using human-based in silico models.
  • * Improved prediction of nephrotoxicity supports safer drug development and personalized medicine approaches.

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