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Large lung cancer study shows potential for more targeted therapies
Date:9/9/2012

A nationwide consortium of scientists has reported the first comprehensive genetic analysis of squamous cell carcinoma of the lung, a common type of lung cancer responsible for about 400,000 deaths each year.

"We found that almost 75 percent of the patients' cancers have mutations that can be targeted with existing drugs -- drugs that are available commercially or for clinical trials," says one of the lead investigators, Ramaswamy Govindan, MD, an oncologist at Washington University School of Medicine in St. Louis and co-chair of the lung cancer group of The Cancer Genome Atlas.

The research appears online Sept. 9 in Nature.

The Cancer Genome Atlas project combines efforts of the nation's leading genetic sequencing centers, including The Genome Institute at Washington University, to describe the genetics of common tumors with the goal of improving prevention, detection and treatment. The Cancer Genome Atlas is supported by the National Cancer Institute and the National Human Genome Research Institute, both parts of the National Institutes of Health (NIH).

The other lung cancer co-chairs are the study's senior author Matthew Meyerson, MD, PhD, of the Broad Institute of Massachusetts Institute of Technology and Harvard University, and Stephen Baylin, MD, of Johns Hopkins University.

The study examined the tumors and normal tissue of 178 patients with lung squamous cell carcinoma. The investigators found recurring mutations common to many patients in 18 genes. And almost all of the tumors showed mutations in a gene called TP53, known for its role in repairing damaged DNA.

Interestingly, the researchers noted that lung squamous cell carcinoma shares many mutations with head and neck squamous cell carcinomas, supporting the emerging body of evidence that cancers may be more appropriately classified by their genetics rather than the primary organ they affect.

"We clearly see mutations in lung cance
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Contact: Julia Evangelou Strait
straitj@wustl.edu
314-286-0141
Washington University School of Medicine
Source:Eurekalert

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