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Genome-wide prioritization of disease genes and identification of disease-disease associations from an integrated human functional linkage network

Bolan Linghu1 email, Evan S Snitkin1 email, Zhenjun Hu1 email, Yu Xia1,2 email and Charles DeLisi1 email

Bioinformatics Program, Boston University, 24 Cummington Street, Boston, MA 02215, USA

Department of Chemistry, Boston University, 590 Commonwealth Avenue, Boston, MA 02215, USA

author email corresponding author email

Genome Biology 2009, 10:R91doi:10.1186/gb-2009-10-9-r91

Published: 3 September 2009

Subject areas: Bioinformatics, Medicine, Methods

Abstract

We integrate 16 genomic features to construct an evidence-weighted functional-linkage network comprising 21,657 human genes. The functional-linkage network is used to prioritize candidate genes for 110 diseases, and to reliably disclose hidden associations between disease pairs having dissimilar phenotypes, such as hypercholesterolemia and Alzheimer's disease. Many of these disease-disease associations are supported by epidemiology, but with no previous genetic basis. Such associations can drive novel hypotheses on molecular mechanisms of diseases and therapies.


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