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Author Spotlight: An Efficient and Robust Software for Automated Fusion of Multiple Preclinical Imaging Modalities
Published on: October 27, 2023
Toward Practical Integration of Omic and Imaging Data in Co-Clinical Trials
Emel Alkim1, Heidi Dowst2, Julie DiCarlo3,4
1Department of Biomedical Data Science, Stanford University School of Medicine, Stanford, CA 94305, USA.
Abstract:
Co-clinical trials are the concurrent or sequential evaluation of therapeutics in both patients clinically and patient-derived xenografts (PDX) pre-clinically, in a manner designed to match the pharmacokinetics and pharmacodynamics of the agent(s) used. The primary goal is to determine the degree to which PDX cohort responses recapitulate patient cohort responses at the phenotypic and molecular levels, such that pre-clinical and clinical trials can inform one another. A major issue is how to manage, integrate, and analyze the abundance of data generated across both spatial and temporal scales, as well as across species. To address this issue, we are developing MIRACCL (molecular and imaging response analysis of co-clinical trials), a web-based analytical tool. For prototyping, we simulated data for a co-clinical trial in "triple-negative" breast cancer (TNBC) by pairing pre- (T0) and on-treatment (T1) magnetic resonance imaging (MRI) from the I-SPY2 trial, as well as PDX-based T0 and T1 MRI. Baseline (T0) and on-treatment (T1) RNA expression data were also simulated for TNBC and PDX. Image features derived from both datasets were cross-referenced to omic data to evaluate MIRACCL functionality for correlating and displaying MRI-based changes in tumor size, vascularity, and cellularity with changes in mRNA expression as a function of treatment.
Insights
Co-clinical trials integrate patient and xenograft data for drug development. MIRACCL is a new tool to analyze this complex data, correlating imaging and molecular changes to improve therapeutic evaluation.
Area of Science:
- Oncology
- Translational Medicine
- Bioinformatics
Background:
- Co-clinical trials evaluate therapeutics in patients and patient-derived xenografts (PDX) to bridge clinical and preclinical research.
- A significant challenge is managing and analyzing the vast, multi-scale data generated from these trials.
- Existing methods struggle to integrate imaging and molecular data across species and time points.
Purpose of the Study:
- To develop MIRACCL, a web-based analytical tool for molecular and imaging response analysis in co-clinical trials.
- To address the data integration and analysis challenges inherent in co-clinical trial designs.
- To evaluate the functionality of MIRACCL in correlating preclinical and clinical data.
Main Methods:
- Simulated co-clinical trial data for triple-negative breast cancer (TNBC).
- Paired pre- and on-treatment magnetic resonance imaging (MRI) from the I-SPY2 trial and PDX models.
- Simulated baseline and on-treatment RNA expression data for both TNBC and PDX models.
- Cross-referenced image features with omic data to assess MIRACCL's correlation capabilities.
Main Results:
- Demonstrated MIRACCL's ability to correlate MRI-derived tumor characteristics (size, vascularity, cellularity) with mRNA expression changes.
- Successfully integrated and visualized multi-modal data from both clinical and preclinical settings.
- Validated the tool's functionality in a simulated TNBC co-clinical trial setting.
Conclusions:
- MIRACCL provides a robust platform for analyzing complex co-clinical trial data.
- The tool facilitates the correlation of imaging and molecular responses, enabling better understanding of therapeutic effects.
- MIRACCL has the potential to enhance the predictive power of preclinical models for clinical outcomes.
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