About OpenADMET


OpenADMET is building open models and datasets for absorption, distribution, metabolism, excretion, and toxicity to make therapeutic development more reliable, affordable, and effective.

We are an open science effort focused on improving how the field predicts safety and toxicity for small molecules. By combining high-quality data generation, mechanistic insight, and machine learning, OpenADMET helps create more rigorous and useful ADMET models for the broader scientific community.

Our work includes open datasets, predictive modeling, and community blind challenges designed to benchmark progress on realistic problems in drug discovery. We aim to build shared infrastructure that helps researchers better understand molecular properties and develop stronger predictive tools.

Blind Challenges


OpenADMET runs community blind challenges to benchmark predictive models on realistic drug discovery datasets. These challenges create rigorous, transparent tests of performance while helping release valuable datasets and methods to the broader community.

Current Challenge

Predicting PXR Induction


Our current blind challenge focuses on human PXR induction, an important ADMET liability associated with drug-drug interactions, hepatotoxicity, and late-stage development risk. The challenge includes both an activity prediction track and a structure prediction track, built on a large OpenADMET-generated dataset designed to resemble realistic lead-optimization workflows.

Activity Track
Predict pEC50 values for a blinded test set of PXR-active compounds.
Structure Track
Predict bound structures for PXR ligands.
Open Benchmarking
Transparent evaluation on blinded experimental data.

Past Challenges

A growing archive of community challenges built around realistic experimental datasets.

2025–2026
ExpansionRx–OpenADMET Blind Challenge

A lead-optimization-style blind challenge based on real-world ADMET data from Expansion Therapeutics. Participants predicted nine ADMET endpoints using earlier-stage molecules to forecast late-stage compounds.

370+ participants · 4,000+ submissions
2025–2026
ASAP-Polaris-OpenADMET Antiviral Challenge

An earlier OpenADMET-associated community blind challenge focused on pan-coronavirus drug discovery data, bringing together participants to evaluate computational methods on realistic potency and structure tasks.

Latest from our Blog


Updates on blind challenges, new models, datasets, and lessons learned from the OpenADMET community.

April 1, 2026
Predicting PXR Induction - We have liftoff

Launch details for the PXR induction challenge, including the dataset, rules, and practical guidance for participants.

Read More
March 26, 2026
Lessons Learned from the OpenADMET-ExpansionRx Blind Challenge: Can We Trust Zero-Shot ADMET Predictions?

Reflections on the ExpansionRx challenge and what the results suggest about zero-shot ADMET prediction in practice.

Read more →
March 17, 2026
Announcing the next OpenADMET Blind Challenge: Predicting PXR Induction

An introduction to the next blind challenge and why blinded datasets remain important for realistic benchmarking.

Read more →
March 10, 2026
A Hot, Fresh, & New Clearance Model

A look at OpenADMET’s clearance modeling work and the broader challenge of generalizing across chemical space.

Read more →
March 1, 2026
Building the OpenADMET Data Engine

A behind-the-scenes look at the infrastructure and strategy required to generate useful ADMET datasets at scale.

Read more →
February 4, 2026
Lessons Learned from the OpenADMET - ExpansionRx Blind Challenge

Early takeaways from the ExpansionRx challenge, including what participants and organizers learned from the first round.

Read more →

People


Board of Directors


Pat Walters
Pat Walters, Ph. D.
Linkedin
Open Molecular Software Foundation
James Fraser
James Fraser, Ph. D.
Linkedin
University of California San Francisco
John D. Chodera
John D. Chodera, Ph. D.
Linkedin
Memorial Sloan Kettering Cancer Center
Sri Kosuri
Sri Kosuri, Ph. D.
Linkedin
Octant
Mark Murcko
Mark Murcko, Ph. D.
Linkedin
Relay Therapeutics

Principal Investigators


James Fraser
James Fraser, Ph. D.
Program Director, Principal Investigator
Linkedin
University of California San Francisco
John D. Chodera
John D. Chodera, Ph. D.
Principal Investigator
Linkedin
Memorial Sloan Kettering Cancer Center
Sri Kosuri
Sri Kosuri, Ph. D.
Principal Investigator
Linkedin
Octant

Open Molecular Software Foundation Team


Pat Walters
Pat Walters, Ph. D.
Chief Scientist
Linkedin
Open Molecular Software Foundation
Hugo MacDermott-Opeskin
Hugo MacDermott-Opeskin, Ph. D.
Technical Lead
Linkedin
Open Molecular Software Foundation
Mallory Tollefson
Mallory Tollefson, Ph. D.
Business and Project Manager
Linkedin
Open Molecular Software Foundation
Devany West
Devany West, Ph. D.
Research Software Engineer
Linkedin
Open Molecular Software Foundation
Kate Huddleston
Kate Huddleston, Ph. D.
Research Software Engineer
Linkedin
Open Molecular Software Foundation
Sean Colby
Sean Colby, M. Sc.
Senior Scientist
Linkedin
Open Molecular Software Foundation
Cynthia Xu
Cynthia Xu
Research Software Engineer
Linkedin
Open Molecular Software Foundation
Maria Castellanos
Maria Castellanos, Ph. D.
Research Software Engineer
Linkedin
Open Molecular Software Foundation
Jonathan Swain
Jonathan Swain, Ph. D.
Research Software Engineer
Linkedin
Open Molecular Software Foundation

Resources


Publications and related resources from the OpenADMET community.

The Avoidome


Publication
The Avoidome
Fraser Lab PDF
View Publication

ASAP Challenge


Preprint
A Computational Community Blind Challenge on Pan-Coronavirus Drug Discovery Data
ChemRxiv
View Publication
Publication
Data-Driven Priors to Improve Docking for Pose Prediction
ACS JCIM
View Publication
Preprint
Experiments with Data-Augmented Modeling of ADME and Potency Endpoints in the ASAP-Polaris-OpenADMET Antiviral Challenge
ChemRxiv
View Publication
Preprint
Deep Learning vs Classical Methods in Potency & ADME Prediction: Insights from the Polaris Antiviral Challenge
ChemRxiv
View Publication
Preprint
Fingerprint-Based Machine Learning for SARS-CoV-2 and MERS-CoV Mpro Inhibition: Highlighting the Potential of Bayesian Neural Networks
ChemRxiv
View Publication
Publication
TEMPL: A Template-Based Protein-Ligand Pose Prediction Baseline
ACS JCIM
View Publication
Publication
Robust Prediction of Protein-Ligand Binding Potency with Multi-modal Customized Gate Control
ACS JCIM
View Publication
Publication
Deep-Learning vs Physics-Based Docking Tools for Future Coronavirus Pandemics
ACS JCIM
View Publication