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More than 200 genes identified for Crohn's Disease
Date:12/13/2012

More than two hundred gene locations have now been identified for the chronic bowel condition Crohn's Disease, in a study that analysed the entire human genome.

Published today in The American Journal of Human Genetics, scientists at UCL have devised a new method for identifying and mapping gene locations for complex inherited diseases. Using this method, they have been able to identify a large number of additional genes for Crohn's Disease, making a total of more than 200, which is more than have been found for any other disease. For example, there are just 66 known gene-regions for type 2 diabetes.

Crohn's Disease, a type of Inflammatory Bowel Disease, is a chronic illness of complex origins affecting approximately 100 to 150 people per 100,000. Understanding the genetic component of such complex diseases is central to explaining patients' symptoms and improving treatment.

Despite Crohn's having a large genetic component, this has been hard to dissect. This is partly due to the large number of genes involved, their complex interactions with environment and the spectrum of clinical presentations. As a result, many scientists have been focusing on ever larger cohorts of patients under the impression that larger data sets data will give better results.

This study shows how studying smaller but better defined groups can lead to a better understanding of how complex diseases are inherited, and paving the way for personalised treatment.

Dr Nikolas Maniatis, senior author from the UCL Research Department of Genetics, Evolution and Environment, said: "The discovery of so many gene locations for Crohn's Disease is an important step forward in understanding the disease, which has a very complicated genetic basis. We hope that the method we have used here can be used to identify the genes involved in other diseases which are similarly complex, for example different cancers and diabetes."

The research team us
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Contact: Clare Ryan
clare.ryan@ucl.ac.uk
44-020-310-83846
University College London
Source:Eurekalert

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