General Pharmacometrics
Vivaswath Ayyar, PhD (he/him/his)
Scientific Director
GSK, Pennsylvania, United States
Wei Gao, PhD
Executive Director
Moderna Therapeutics, United States
Zheng Yang, PhD
Principal
Excelsius LLC., Massachusetts, United States
Devam Desai, M.S.
PhD Student
Center of Pharmacometrics and Systems Pharmacology, University of Florida, Orlando, FL, United States
Kenji Miyazawa, PhD (he/him/his)
Senior Scientist, Quantitative Systems Pharmacology
Moderna, Inc.
Malden, Massachusetts, United States
Description of session (include background & scientific importance): Recent breakthroughs in RNA therapeutics have revolutionized drug development by enabling precise modulation of disease-related proteins. RNA interference (RNAi) via small interfering RNA (siRNA) and antisense oligonucleotides (ASO) silences target mRNA, preventing protein synthesis. Conversely, mRNA-based therapies and vaccines introduce functional proteins, while CRISPR-based approaches enable gene editing. While several RNA therapeutics—primarily for hepatic targets—have been approved, advances in RNA engineering, lipid nanoparticle delivery, and conjugation strategies have enhanced pharmacokinetics (PK) and pharmacodynamics (PD), enabling potent and durable effects beyond the liver.
Despite progress, key challenges persist in quantitative pharmacology assessments, limiting model-informed drug development (MIDD):
1. Complex ADME controlling systemic PK profiles – transient plasma exposure with prolonged tissue residence.
2. Diverse mechanisms-of-action – RISC and RNaseH-mediated RNAi, ribosomal translation, and CRISPR editing introduce distinct PD complexities.
3. Intracellular rate-limiting steps – nonlinear and time-dependent pathways (e.g., receptor-mediated uptake, endolysosomal processing) complicate dose-exposure-response predictions.
4. Current gaps in experimental paradigms – there is urgent need for optimal experiments studies and measurements which offer the quantitative, mechanistic, and translational insights needed to advance MIDD of RNA therapeutics.
This symposium will showcase cutting-edge experimental and quantitative methodologies addressing these challenges. Experts from industry and academia will discuss advances spanning discovery, delivery, mechanistic modeling, and clinical development. Integrated perspectives needed to advance quantitative pharmacology to optimize next-gen RNA therapeutics will be offered. An engaging panel discussion will highlight how data/knowledge-driven insights can serve as a critical inflection point, accelerating MIDD and shaping the future of RNA therapeutics and related emerging modalities.
Speaker: Zheng Yang, PhD – Excelsius LLC.
Speaker: Devam A. Desai, M.S. – Center of Pharmacometrics and Systems Pharmacology, University of Florida, Orlando, FL
Speaker: Kenji Miyazawa, PhD (he/him/his) – Moderna, Inc.
Panelist: Zheng Yang, PhD – Excelsius LLC.
Panelist: Rodrigo Cristofoletti, PhD – University of Florida
Panelist: Kenji Miyazawa, PhD (he/him/his) – Moderna, Inc.
Panelist: Jiawei Zhou, PhD (she/her/hers) – UNC-Chapel Hill