Lunch and Learn Series
The Center for Precision Medicine and Data Sciences (CPMDS) proposes a six-session Luncheon Learn Series to be offered during the winter and spring terms. The series is designed to build foundational literacy in clinical data, omics, and artificial intelligence, while highlighting UC Davis–specific resources that enable translational precision medicine research.
CPMDS - FY26 Year in Review
In FY2026, the Center for Precision Medicine and Data Sciences advanced a tightly integrated portfolio spanning AI-enabled drug discovery, computational cardiology, protein design, clinical informatics, and precision-medicine software. Eight contributing researchers and trainees produced peer-reviewed science, publicly available tools, competitive grant activity, and a growing network of national and international partnerships.
Signature Accomplishments
- 11 articles published, accepted, or in press — in journals including Nucleic Acids Research, Nature Reviews Methods Primer, The Journal of Precision Medicine: Health and Disease, eLife, Journal of General Physiology, Pharmacological Reviews, and the Journal of Physiology.
- Two precision-medicine platforms launched publicly — CATVariant (Nucleic Acids Research) for integrated variant interpretation and BoltzOmics (iScience) for AI-based drug-binding prediction.
- Digital twins of human excitable cells published at eLife — a machine-learning framework for personalized cardiac electrophysiology.
- Sustained NIH training investment, including two T32 fellowships (pre- and post-doctoral) and an active federal grant pipeline.
- Collaborations across five countries — New Zealand, Spain, the Netherlands, Australia, and India — plus a digital-health book developed with the World Health Organization and the Government of India.
- 10+ open tools, models, and datasets released, alongside the GPU/computing backbone powering it all.
- 13+ talks, seminars, and posters and 7+ students mentored across graduate, undergraduate, and pre-med training.
- Built and maintained the Center’s GPU/server computing backbone and released open research software with 80+ publication-ready analysis workflows.
Bottom line: FY2026 demonstrates a productive, well-networked Center converting computational and AI methods into published science, deployed tools, funded training, and translational impact — a strong foundation for grant renewals and continued institutional investment.
New open-access platform helps researchers understand genetic changes
Every person carries small differences in their DNA. Some of these differences, often called variants, do very little. Others can change the amino-acid sequence of a protein, which may affect how that protein is built, folded, moved inside the cell, or how well it does its job. Because proteins carry out many of the body’s essential functions, even a small change can sometimes have important biological or medical consequences.
The challenge is figuring out which changes matter. Researchers often need to weigh many different clues, including whether a variant is rare or common in human populations, whether it has been reported in people with disease, whether it falls in an important or highly conserved part of the protein, whether it may change the protein’s shape or nearby interactions, what experiments have measured, and what the scientific literature says. Each type of evidence has strengths and caveats, and no single source is usually enough on its own. In practice, this often means moving between many separate databases and analysis tools, then manually piecing together a fragmented trail of evidence to decide whether a variant is likely to be harmless, disruptive, or still uncertain.
CATVariant was created to make that process easier and more informative. The platform uses automated data mining to retrieve and organize variant-related evidence from genetic variant databases, protein resources, population datasets, experimental assay collections, disease and pharmacology knowledge bases, and the scientific literature. It then goes further by mapping variants onto the protein sequence and available protein models, comparing them with known functional regions and nearby reported changes, and analyzing broader patterns such as mutation-sensitive regions, structural clusters, and residue connections across the protein. The result is an interactive report that helps users move from a broad protein-level view to detailed review of individual variants without manually stitching the evidence together across multiple resources.
CATVariant is especially useful when direct laboratory or clinical evidence is limited, which is true for many variants. The platform brings together a broad set of computational predictors, with 12 directly surfaced predictor or effect-estimation inputs, and interprets them alongside the rest of the evidence rather than in isolation. These models draw on different kinds of biological signal, including evolutionary conservation, protein sequence patterns, biochemical context, protein shape, and RNA splicing. Because the models capture different signals, CATVariant lets users see where the computational evidence agrees, where it conflicts, and how those predictions line up with structural, population, experimental, and literature evidence.
In short, CATVariant is designed to help researchers turn scattered clues into testable ideas about how a genetic change might affect protein function. The platform is open access and free to use.
BoltzOmics: Predicting genetic variant effects on drug binding with Boltz-2
July 2026
Summary
A mechanistic understanding of how genetic variants alter drug-receptor binding is central to precision medicine, drug response prediction, and drug development. Yet, experimental mutation-drug profiling remains slow and expensive, while existing computational approaches often trade accuracy for scalability. We developed BoltzOmics, an interactive, open-source platform that integrates Boltz-2, a deep learning model for biomolecular structure prediction, to rapidly assess mutation effects on drug binding. Starting from amino acid sequences, the workflow queries databases for genetic variants, generates wild-type and mutant protein structures, and screens multiple drugs across variants to predict binding affinity changes. We evaluated BoltzOmics across four targets: hERG, NaV1.5, HER2, and CYP3A4. Predictions achieved Pearson correlations with experimental drug IC50 data up to 0.76 for wild-type proteins and 0.60 for mutants. By enabling scalable, high-throughput assessment of drug-variant interactions, BoltzOmics establishes a practical AI-driven framework for accelerating computational drug discovery and advancing precision medicine research.
From Lipid Dynamics to Precision Predictions: A New Approach Methodology for Precision Modeling of Phosphoinositide Signaling
July 2026
Abstract
Precision medicine requires models that can translate rich molecular measurements into individualized predictions of biological response. This challenge is particularly acute for phosphoinositide signaling disorders that often exhibit cell-type-specific responses to identical genetic or pharmacological perturbations. Here, we develop a New Approach Methodology (NAM) demonstrating that basal phosphoinositide pool composition, determined by the size of the PI(4)P reserve, determines the robustness of lipid signaling. The NAM comprises a core kinetic model of phosphatidylinositol (PI), phosphatidylinositol 4-phosphate (PI(4)P), phosphatidylinositol 4,5-bisphosphate (PI(4,5)P2), and inositol 1,4,5-trisphosphate (IP3) dynamics. The model also incorporates phospholipase C (PLC)-mediated hydrolysis and phosphatase-mediated turnover and explicitly accounts for IP3 biosensor binding during parameter optimization. Parameters were optimized using experimental measurements from superior cervical ganglion (SCG) neurons and validated against independent dose-dependent PI(4,5)P2 depletion data. Local and global sensitivity analyses were performed to identify the dominant parameter drivers of pathway behavior. These sensitivity relationships were then used to generate a population of model variants that captured phosphoinositide dynamics observed in tsA201 cells, human neuroblastoma cells, and hippocampal neurons.
Digital twins in nuclear medicine: Science fiction or reality?
July 2026
Abstract
Digital twins (DTs) are gaining attention in nuclear medicine, particularly in radiopharmaceutical therapy (RPT), yet their clinical relevance is often questioned. Drawing on a live debate at the 2025 SNMMI Annual Meeting, this Editorial is organized around the motion “Digital Twins in Nuclear Medicine: Science Fiction or Reality?” and three practice-facing questions: whether DTs address a distinct clinical need, whether current data and models are mature enough, and what validation, uncertainty quantification, and workflow requirements are needed for responsible deployment. We summarize supportive and skeptical positions and propose a practical synthesis for RPT. We emphasize that near-term DTs should be viewed not as AI agents decision-makers, but as task-specific, continuously updated decision-support systems that extend established pharmacokinetic and dosimetry methods.
Large-scale synthetic data enable digital twins of human excitable cells
July 2026
Abstract
Individual variability shapes how diseases manifest, how patients respond to therapy, and how rare phenotypes arise. Conventional experimental approaches obscure variation by averaging, which limits mechanistic insight and predictive accuracy. We present a computational framework that builds digital twins of human-induced pluripotent stem cell-derived cardiomyocytes from a single optimized voltage clamp experiment. The framework depends on massive synthetic datasets comprising simulated cells that span broad ionic and electrophysiological ranges. These synthetic data make it possible to control parameters precisely, explore biological variability comprehensively, and train models beyond the limits of experimental data. A neural network trained on synthetic data then inferred biophysical parameters from experimental recordings from live cells, reproducing distinct electrophysiological features. Our study unites computational modeling, data simulation, and learning to enable scalable, precise, individualized cardiac electrophysiology modeling and can be readily extended to any electrically active cell type.
Society welcomes inaugural Editors-in-Chief for The Journal of Precision Medicine: Health and Disease and The Journal of Nutritional Physiology
Following the announcement of The Physiological Society’s partnership with Elsevier to launch a new journal, we are delighted to introduce the Editor-in-Chief (Colleen E. Clancy) and Deputy Editor in Chief (Vladimir Yarov-Yarovoy) of The Journal of Precision Medicine: Health and Disease.
