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 19 January 2018

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News

Novel candidate risk genes for inflammatory bowel disease identified

The most recent issue of the Inflammatory Bowel Diseases reports that machine learning–based gene prioritization identifies novel candidate risk genes for inflammatory bowel disease.

News image

The inflammatory bowel diseases (IBDs) are chronic inflammatory disorders, associated with genetic, immunologic, and environmental factors.

Although hundreds of genes are implicated in IBD etiology, it is likely that additional genes play a role in the disease process.

Dr Shay Ben-Shachar and colleagues developed a machine learning–based gene prioritization method to identify novel IBD-risk genes.

Known IBD genes were collected from genome-wide association studies and annotated with expression and pathway information.

Using these genes, a model was trained to identify IBD-risk genes.

The team scored and classified a comprehensive list of 16,390 genes.

347 genes had a high prediction score
Inflammatory Bowel Diseases

Immune and inflammatory responses, as well as pathways such as cell adhesion, cytokine–cytokine receptor interaction, and sulfur metabolism were identified to be related to IBD.

The researchers found that scores predicted for IBD genes were significantly higher than those for non-IBD genes.

The team observed a significant association between the score and having an IBD publication.

Overall, 347 genes had a high prediction score.

A literature review of the genes, excluding those used to train the model, identified 67 genes without any publication concerning IBD.

The research team found that these genes represent novel candidate IBD-risk genes, which can be targeted in future studies.

Dr Ben-Shachar's team comments, "Our method successfully differentiated IBD-risk genes from non-IBD genes by using information from expression data and a multitude of gene annotations."

"Crucial features were defined, and we were able to detect novel candidate risk genes for IBD."

"These findings may help detect new IBD-risk genes and improve the understanding of IBD pathogenesis."

Inflamm Bowel Dis 2017: 23(9): 1516–1523
03 October 2017

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