PMID- 29688306 OWN - NLM STAT- MEDLINE DCOM- 20191017 LR - 20230130 IS - 1367-4811 (Electronic) IS - 1367-4803 (Print) IS - 1367-4803 (Linking) VI - 34 IP - 18 DP - 2018 Sep 15 TI - EMUDRA: Ensemble of Multiple Drug Repositioning Approaches to improve prediction accuracy. PG - 3151-3159 LID - 10.1093/bioinformatics/bty325 [doi] AB - MOTIVATION: Availability of large-scale genomic, epigenetic and proteomic data in complex diseases makes it possible to objectively and comprehensively identify the therapeutic targets that can lead to new therapies. The Connectivity Map has been widely used to explore novel indications of existing drugs. However, the prediction accuracy of the existing methods, such as Kolmogorov-Smirnov statistic remains low. Here we present a novel high-performance drug repositioning approach that improves over the state-of-the-art methods. RESULTS: We first designed an expression weighted cosine (EWCos) method to minimize the influence of the uninformative expression changes and then developed an ensemble approach termed ensemble of multiple drug repositioning approaches (EMUDRA) to integrate EWCos and three existing state-of-the-art methods. EMUDRA significantly outperformed individual drug repositioning methods when applied to simulated and independent evaluation datasets. We predicted using EMUDRA and experimentally validated an antibiotic rifabutin as an inhibitor of cell growth in triple negative breast cancer. EMUDRA can identify drugs that more effectively target disease gene signatures and will thus be a useful tool for identifying novel therapies for complex diseases and predicting new indications for existing drugs. AVAILABILITY AND IMPLEMENTATION: The EMUDRA R package is available at doi: 10.7303/syn11510888. SUPPLEMENTARY INFORMATION: Supplementary data are available at Bioinformatics online. FAU - Zhou, Xianxiao AU - Zhou X AD - Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Wang, Minghui AU - Wang M AD - Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Katsyv, Igor AU - Katsyv I AD - Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Medical Scientist Training Program, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Irie, Hanna AU - Irie H AD - Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA. FAU - Zhang, Bin AU - Zhang B AD - Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Icahn Institute for Genomics and Multiscale Biology, Icahn School of Medicine at Mount Sinai, New York, NY, USA. AD - Department of Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA. LA - eng GR - RF1 AG057440/AG/NIA NIH HHS/United States GR - RF1 AG054014/AG/NIA NIH HHS/United States GR - U01 AG052411/AG/NIA NIH HHS/United States GR - U01 AG046170/AG/NIA NIH HHS/United States GR - R01 AG057907/AG/NIA NIH HHS/United States GR - U01 AI111598/AI/NIAID NIH HHS/United States GR - R01 CA163772/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - England TA - Bioinformatics JT - Bioinformatics (Oxford, England) JID - 9808944 SB - IM MH - *Algorithms MH - *Drug Repositioning MH - Epigenomics MH - Genomics MH - Proteomics PMC - PMC6138000 EDAT- 2018/04/25 06:00 MHDA- 2019/10/18 06:00 PMCR- 2019/04/24 CRDT- 2018/04/25 06:00 PHST- 2017/05/21 00:00 [received] PHST- 2018/04/20 00:00 [accepted] PHST- 2018/04/25 06:00 [pubmed] PHST- 2019/10/18 06:00 [medline] PHST- 2018/04/25 06:00 [entrez] PHST- 2019/04/24 00:00 [pmc-release] AID - 4983064 [pii] AID - bty325 [pii] AID - 10.1093/bioinformatics/bty325 [doi] PST - ppublish SO - Bioinformatics. 2018 Sep 15;34(18):3151-3159. doi: 10.1093/bioinformatics/bty325.