Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.18/2446
Título: Hope for GWAS: Relevant Risk Genes Uncovered from GWAS Statistical Noise
Autor: Correia, C.
Diekmann, Y.
Vicente, A.M.
Pereira-Leal, J.B.
Palavras-chave: Genome-wide Association Studies (GWAS)
Missing Heritability
Interaction Networks
Functional Coherence
Data: Set-2014
Editora: Molecular Diversity Preservation International (MDPI)
Citação: Int J Mol Sci. 2014 Sep 29;15(10):17601-21. doi: 10.3390/ijms151017601.
Resumo: Hundreds of genetic variants have been associated to common diseases through genome-wide association studies (GWAS), yet there are limits to current approaches in detecting true small effect risk variants against a background of false positive findings. Here we addressed the missing heritability problem, aiming to test whether there are indeed risk variants within GWAS statistical noise and to develop a systematic strategy to retrieve these hidden variants. Employing an integrative approach, which combines protein-protein interactions with association data from GWAS for 6 common diseases, we found that associated-genes at less stringent significance levels (p < 0.1) with any of these diseases are functionally connected beyond noise expectation. This functional coherence was used to identify disease-relevant subnetworks, which were shown to be enriched in known genes, outperforming the selection of top GWAS genes. As a proof of principle, we applied this approach to breast cancer, supporting well-known breast cancer genes, while pinpointing novel susceptibility genes for experimental validation. This study reinforces the idea that GWAS are under-analyzed and that missing heritability is rather hidden. It extends the use of protein networks to reveal this missing heritability, thus leveraging the large investment in GWAS that produced so far little tangible gain.
Peer review: yes
URI: http://hdl.handle.net/10400.18/2446
DOI: doi:10.3390/ijms151017601
ISSN: 1422-0067
Versão do Editor: http://www.mdpi.com/1422-0067/15/10/17601
Aparece nas colecções:DPSPDNT - Artigos em revistas internacionais

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