Biokinetics and Metabolism

Physiologically Based Pharmacokinetic (PBPK) Modeling Services

Solutions to support drug development, chemical risk assessment, and regulatory submissions.

  • Custom compound-specific model development
  • Rapid PBPK (HT-PBPK) for early discovery and prioritization
  • Dose, route, and species extrapolation
  • Early life and other sensitive populations
  • Reverse dosimetry and exposure reconstruction to estimate likely human exposures

In Vitro-to-In Vivo Extrapolation (IVIVE) Services

Translate in vitro toxicity findings into in vivo dose– response relationships.

  • Quantitative IVIVE of cell-based toxicity assay results
  • High-throughput IVIVE (HT IVIVE) of in vitro screening assays
  • Derivation of Oral Equivalent Dose (OED) and Activity-to-Exposure Ratio (AER) from HT in vitro data

In Vitro Metabolism Study Design & Implementation

Design, place, and monitor in vitro metabolism studies to inform pharmacokinetics, safety, and risk assessment.

  • Intrinsic clearance (Clint) and saturable metabolism (Vmax and Km)
  • Metabolite identification
  • Studies for cross-species comparison to support interspecies extrapolation

In Silico Models to Predict Physicochemical Parameters and Metabolites

Use of in silico tools to support drug development, safety assessment, and regulatory submissions.

  • OPERA modeling of physicochemical parameter
  • Meteor Nexus to predict likely metabolites and metabolic pathways
  • Integration with in vitro and in vivo experimental data to improve in silico predictions