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Title: Walking the interactome for candidate prioritization in exome sequencing studies of Mendelian diseases

Journal Article · · Bioinformatics
 [1];  [2];  [3];  [4];  [4];  [4];  [5];  [6];  [7]
  1. The Wellcome Trust Sanger Institute, Cambridgeshire (United Kingdom)
  2. Charite-Univ. Berlin, Berlin (Germany)
  3. Univ. of Duisburg-Essen, Essen (Germany)
  4. Johns Hopkins Univ. School of Medicine, Baltimore, MD (United States)
  5. Charite-Univ. Berlin, Berlin (Germany); Freie Univ. Berlin, Berlin (Germany)
  6. Charite-Univ. Berlin, Berlin (Germany); Polish Academy of Sciences, Poznan (Poland)
  7. Charite-Univ. Berlin, Berlin (Germany); Freie Univ. Berlin, Berlin (Germany); Max Planck Institute for Molecular Genetics, Berlin (Germany)

Here, whole-exome sequencing (WES) has opened up previously unheard of possibilities for identifying novel disease genes in Mendelian disorders, only about half of which have been elucidated to date. However, interpretation of WES data remains challenging. As a result, we analyze protein–protein association (PPA) networks to identify candidate genes in the vicinity of genes previously implicated in a disease. The analysis, using a random-walk with restart (RWR) method, is adapted to the setting of WES by developing a composite variant-gene relevance score based on the rarity, location and predicted pathogenicity of variants and the RWR evaluation of genes harboring the variants. Benchmarking using known disease variants from 88 disease-gene families reveals that the correct gene is ranked among the top 10 candidates in ≥50% of cases, a figure which we confirmed using a prospective study of disease genes identified in 2012 and PPA data produced before that date. In conclusion, we implement our method in a freely available Web server, ExomeWalker, that displays a ranked list of candidates together with information on PPAs, frequency and predicted pathogenicity of the variants to allow quick and effective searches for candidates that are likely to reward closer investigation.

Research Organization:
Johns Hopkins Univ., Baltimore, MD (United States). School of Medicine
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1342955
Journal Information:
Bioinformatics, Vol. 30, Issue 22; ISSN 1367-4803
Publisher:
Oxford University PressCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 55 works
Citation information provided by
Web of Science

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Cited By (27)

VaRank: a simple and powerful tool for ranking genetic variants journal January 2015
Global network random walk for predicting potential human lncRNA-disease associations journal September 2017
Arete – candidate gene prioritization using biological network topology with additional evidence types journal July 2017
OVA: integrating molecular and physical phenotype data from multiple biomedical domain ontologies with variant filtering for enhanced variant prioritization journal August 2015
A Hybrid Computational Method for the Discovery of Novel Reproduction-Related Genes journal March 2015
PHI-Nets: A Network Resource for Ascomycete Fungal Pathogens to Annotate and Identify Putative Virulence Interacting Proteins and siRNA Targets journal December 2019
Phenotype-driven strategies for exome prioritization of human Mendelian disease genes journal July 2015
Fundamentals of protein interaction network mapping journal December 2015
Machine learning with biomedical ontologies posted_content January 2020
matchbox : An open-source tool for patient matching via the Matchmaker Exchange journal October 2018
Rapid and Accurate Interpretation of Clinical Exomes Using Phenoxome: a Computational Phenotype-driven Approach journal March 2018
Computational evaluation of exome sequence data using human and model organism phenotypes improves diagnostic efficiency journal November 2015
Integrating Multiple Interaction Networks for Gene Function Inference journal December 2018
OMIM.org: Online Mendelian Inheritance in Man (OMIM®), an online catalog of human genes and genetic disorders journal November 2014
PCAN: phenotype consensus analysis to support disease-gene association journal December 2016
Next-generation diagnostics and disease-gene discovery with the Exomiser journal November 2015
DNAseq Workflow in a Diagnostic Context and an Example of a User Friendly Implementation journal January 2015
Integrated rare variant-based risk gene prioritization in disease case-control sequencing studies journal December 2017
Venn-diaNet : venn diagram based network propagation analysis framework for comparing multiple biological experiments journal December 2019
Graphlet Laplacians for topology-function and topology-disease relationships journal June 2019
Network propagation: a universal amplifier of genetic associations journal June 2017
A guided network propagation approach to identify disease genes that combines prior and new information preprint January 2020
Random walk with restart on multiplex and heterogeneous biological networks journal July 2018
Inference of the Dynamic Aging-related Biological Subnetwork via Network Propagation preprint January 2018
PhenoGeneRanker
  • Dursun, Cagatay; Shimoyama, Naoki; Shimoyama, Mary
  • Proceedings of the 10th ACM International Conference on Bioinformatics, Computational Biology and Health Informatics https://doi.org/10.1145/3307339.3342155
conference September 2019
TarGo: network based target gene selection system for human disease related mouse models journal November 2019
A pipeline combining multiple strategies for prioritizing heterozygous variants for the identification of candidate genes in exome datasets journal May 2017

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