Base-pair resolution conservation data improves cell type specific sequence-to-expression prediction

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ID: 325839
2026
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Abstract
MOTIVATION: Genomic sequence-to-activity models can decipher gene regulatory mechanisms and predict the functional impact of regulatory variants. However, current models struggle to integrate information from sequences outside promoters, especially information from cell type specific regulatory elements. RESULTS: Here, we propose incorporating base-pair resolution evolutionary conservation data into genomic sequence-to-expression predictors. We explore two training strategies-training from scratch or fine-tuning an existing sequence-only model with additional conservation input. We find that in both cases, base-pair resolution conservation data improves cell type specific sequence-to-expression prediction, with training from scratch yielding the greatest benefit. The improvement in cell type specific expression prediction can be attributed in part to the fact that models trained on sequence and conservation data learn to better recognize cell type specific regulatory elements than models trained on sequence alone. AVAILABILITY: Code is available at https://github.com/ni-lab/basenji-phyloP. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online.
Reference Key
openalex_W7203888961 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Pooja Kathail, Forest Yang, Gabriel B. Loeb, Nilah M. Ioannidis
Journal BMC Bioinformatics
Year 2026
DOI
10.1093/bioinformatics/btag626
URL
https://doi.org/10.1093/bioinformatics/btag626
Keywords Keywords not found

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