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An international study identifies new DNA variants that increase the risk for cancer
Date:3/27/2013

The European Collaborative Oncological Gen-Environmental Study (COGS) project, whose main goal is to decipher the complex genetic bases of breast, prostate and ovarian cancers, publishes today a total of 12 research articles in several prestigious journals, including Nature Genetics, Nature Communications, The American Journal of Human Genetics and PLOS Genetics. Using mass sequencing techniques, the study has identified up to 80 new regions of the genome associated with an increased susceptibility to developing breast, prostate and ovarian cancers.

The conclusions are drawn from the collaborative work of more than 50 groups around the world, who carried out their genotyping in four different centres and whose work was coordinated by Javier Benítez, Director of the Human Cancer Genetics Programme at the Spanish National Cancer Research Centre (CNIO).

In order to identify those genetic 'errors' or genetic variants that might increase the risk of suffering from cancer among the general population, the project's researchers genotyped more than 200,000 SNPssingle- nucleotide polymorphisms or genome letter changesselected from the genome of 100,000 breast, prostate and ovarian cancer patients, as well as from 100,000 control cases without cancer.

Thanks to the massive genotyping of these individuals, the authors of the different studies published today have identified 41 new genes or regions of the genome that may be susceptible to contributing to the development of breast cancer, 23 new ones for prostate cancer and 4 for ovarian cancer.

"Specifically, the 41 new genes identified for breast cancer increase to almost 70 the number of genes that indicate a high probability of developing this illness when mutated," explains Benítez, adding that: "these data indicate that up to 5% of the general population may have a high risk of suffering from this illness at some point in their lives".

Amongst all of th
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Contact: Nuria Noriega
comunicacion@cnio.es
Centro Nacional de Investigaciones Oncologicas (CNIO)
Source:Eurekalert

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