#66. Quantitative Systems Pharmacology

In this episode, we explore the evolving role of Quantitative Systems Pharmacology (QSP) in drug development, particularly as a mechanistic alternative to traditional animal testing. It details how mathematical modeling can integrate human-relevant data and biological pathways to better predict drug safety and efficacy before clinical trials. The sources highlight recent 2026 FDA draft guidances that establish a regulatory framework for using these models to select initial human doses. While the text acknowledges that QSP is not yet a total replacement for animal studies, it proposes a staged roadmap for its integration. This strategy emphasizes combining computational models with New Approach Methodologies (NAMs), such as organoids, to improve translatability. Ultimately, the documentation serves as a guide for achieving regulatory-grade validation and shifting toward more ethical, human-centric pharmacology. Produced by Dr. Jake Chen.