Finetuning Foundation Models for Temporal Clinical Transcriptomics Data

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ID: 326652
2026
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Abstract
BACKGROUND: Timeseries clinical transcriptomic datasets offer the opportunity to gain insights into the dynamics of disease mechanisms/treatment responses. However, their utility in uncovering temporal patterns is often limited by high noise levels and small sample sizes. Leveraging foundational gene embeddings and incorporating interaction information can help address these challenges, improve gene network analysis, and enable the detection of subtle changes that drive disease progression or drug response. RESULTS: We finetuned gene embeddings from foundation models using healthy tissue gene expression data and used them in temporal GNNs to model gene expression of responder and non-responders to treatment in 4 disease datasets - ulcerative colitis, Crohn's disease, Alopecia Areata, and psoriasis. Application of our method to these datasets confirmed known mechanisms associated with drug action, and also identified key differences between activated and repressed pathways for responders and non-responders, including B-Cell activation and mitochondria-related activity in ulcerative colitis patients. CONCLUSION: Finetuning gene embeddings from foundation models provides a richer context to model gene expression data compared to using them in their naive state. Even with smaller sample sizes, results from GNN-based temporal models outperform traditional methods by detecting known mechanisms of response and unraveling role of genes and mechanisms not known to be associated with response and non-response. CODE AVAILABILITY: Code and data are available in a public GitHub repository - https://github.com/Sanofi-Public/GNN-Timeseries. DOI: 10.5281/zenodo.20494035.
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openalex_W4415371042 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Sachin Mathur, Alexander Kagan, Peyman Passban, Hamid Mattoo, Euxhen Hasanaj, Ziv Bar‐Joseph
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Journal BMC Bioinformatics
Year 2026
DOI
10.1093/bioinformatics/btag640
URL
https://academic.oup.com/bioinformatics/advance-article-pdf/doi/10.1093/bioinformatics/btag640/70818938/btag640.pdf
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