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For multi-modal data, we propose a computational workflow to jointly analyze datasets from cell lines. The workflow comprises a novel probabilistic data integration method, named POPLS-DA, for multi-omics data.<\/jats:p>\n                  <jats:p>The workflow is motivated by a study on synucleinopathies where transcriptomics, proteomics, and drug screening data are measured in affected LUHMES cell lines and controls. The aim is to highlight potentially druggable pathways and genes involved in synucleinopathies. First, POPLS-DA is used to prioritize genes and proteins that best distinguish cases and controls. For these genes, an integrated interaction network is constructed where the drug screen data is incorporated to highlight druggable genes and pathways in the network. Finally, functional enrichment analyses are performed to identify clusters of synaptic and lysosome-related genes and proteins targeted by the protective drugs. POPLS-DA is compared to other single- and multi-omics approaches.<\/jats:p>\n                  <jats:p>\n                    We found that\n                    <jats:italic>HSPA5<\/jats:italic>\n                    , a member of the heat shock protein 70 family, was one of the most targeted genes by the validated drugs, in particular by AT1-blockers.\n                    <jats:italic>HSPA5<\/jats:italic>\n                    and AT1-blockers have been previously linked to\n                    <jats:italic>\u03b1<\/jats:italic>\n                    -synuclein pathology and Parkinson\u2019s disease, showing the relevance of our findings.\n                  <\/jats:p>\n                  <jats:p>Our computational workflow identified new directions for therapeutic targets for synucleinopathies. POPLS-DA provided a larger interpretable gene set than other single- and multi-omic approaches. 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