RT Journal Article SR Electronic T1 Integrative pharmacogenomics to infer large-scale drug taxonomy JF bioRxiv FD Cold Spring Harbor Laboratory SP 046219 DO 10.1101/046219 A1 Nehme El-Hachem A1 Deena M.A. Gendoo A1 Laleh Soltan Ghoraie A1 Zhaleh Safikhani A1 Petr Smirnov A1 Christina Chung A1 Kenan Deng A1 Ailsa Fang A1 Erin Birkwood A1 Chantal Ho A1 Ruth Isserlin A1 Gary D. Bader A1 Anna Goldenberg A1 Benjamin Haibe-Kains YR 2017 UL http://biorxiv.org/content/early/2017/01/05/046219.abstract AB Identification of drug targets and mechanism of action (MoA) for new and uncharacterlzed drugs is important for optimization of drug efficacy. Current MoA prediction approaches largely rely on prior information including side effects, therapeutic indication and/or chemo-informatics. Such information is not transferable or applicable for newly identified, previously uncharacterlzed small molecules. Therefore, a shift in the paradigm of MoA predictions is necessary towards development of unbiased approaches that can elucidate drug relationships and efficiently classify new compounds with basic input data. We propose a new integrative computational pharmacogenomlc approach, referred to as Drug Network Fusion (DNF), to infer scalable drug taxonomies that relies only on basic drug characteristics towards elucidating drug-drug relationships. DNF is the first framework to integrate drug structural information, high-throughput drug perturbation and drug sensitivity profiles, enabling drug classification of new experimental compounds with minimal prior information. We demonstrate that the DNF taxonomy succeeds in identifying pertinent and novel drug-drug relationships, making it suitable for investigating experimental drugs with potential new targets or MoA. We highlight how the scalability of DNF facilitates identification of key drug relationships across different drug categories, and poses as a flexible tool for potential clinical applications in precision medicine. Our results support DNF as a valuable resource to the cancer research community by providing new hypotheses on the compound MoA and potential insights for drug repurposlng.