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  NetCore: a network propagation approach using node coreness

Barel, G., & Herwig, R. (2020). NetCore: a network propagation approach using node coreness. Nucleic Acids Research, 48(17): e98. doi:10.1093/nar/gkaa639.

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 Creators:
Barel, Gal1, Author              
Herwig, Ralf1, Author              
Affiliations:
1Bioinformatics (Ralf Herwig), Dept. of Computational Molecular Biology (Head: Martin Vingron), Max Planck Institute for Molecular Genetics, Max Planck Society, ou_2385701              

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 Abstract: We present NetCore, a novel network propagation approach based on node coreness, for phenotype–genotype associations and module identification. NetCore addresses the node degree bias in PPI networks by using node coreness in the random walk with restart procedure, and achieves improved re-ranking of genes after propagation. Furthermore, NetCore implements a semi-supervised approach to identify phenotype-associated network modules, which anchors the identification of novel candidate genes at known genes associated with the phenotype. We evaluated NetCore on gene sets from 11 different GWAS traits and showed improved performance compared to the standard degree-based network propagation using cross-validation. Furthermore, we applied NetCore to identify disease genes and modules for Schizophrenia GWAS data and pan-cancer mutation data. We compared the novel approach to existing network propagation approaches and showed the benefits of using NetCore in comparison to those. We provide an easy-to-use implementation, together with a high confidence PPI network extracted from ConsensusPathDB, which can be applied to various types of genomics data in order to obtain a re-ranking of genes and functionally relevant network modules.

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Language(s): eng - English
 Dates: 2020-07-212020-07-31
 Publication Status: Published online
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 Identifiers: DOI: 10.1093/nar/gkaa639
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Title: Nucleic Acids Research
  Other : Nucleic Acids Res.
Source Genre: Journal
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Pages: - Volume / Issue: 48 (17) Sequence Number: e98 Start / End Page: - Identifier: ISSN: 0305-1048 (print) 1362-4962 (online)
CoNE: https://pure.mpg.de/cone/journals/resource/1000000000262810