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Study uncovers molecular keys to invasive bladder cancer
Date:1/29/2014

HOUSTON The once sketchy landscape of the molecular defects behind bladder cancer now resembles a road map to new, targeted treatments thanks to the unified efforts of scientists and physicians at 40 institutions.

Deep molecular analysis of 131 muscle-invasive bladder cancer tumors found recurring defects in 32 genes for the cancer that currently has no targeted therapies. Findings by The Cancer Genome Atlas (TCGA) Research Network are published in the journal Nature. The TCGA is a joint project of the National Cancer Institute and the National Human Genome Research Institute of the National Institutes of Health.

"By dramatically increasing our knowledge of the molecular basis of bladder cancers, this project casts a spotlight on particular molecules and biological pathways that may serve as targets for a more individualized approach to therapy," said project co-chair, lead and senior author John Weinstein, M.D., Ph.D., professor and chair of the Department of Bioinformatics and Computational Biology at The University of Texas M.D. Anderson Cancer Center in Houston.

"While many of these genomic alterations have been tied to other cancers, nine of these genes have never been reported as significantly mutated in any other type of malignancy," Weinstein said. "These findings mark additional progress away from defining cancer by organ site and toward molecular classification that spans tumor types."

Basis for investigating novel therapies and new uses of existing drugs

The most common bladder cancer, urothelial carcinoma, will kill an estimated 15,000 Americans in 2014, with 10 times as many deaths worldwide. Muscle-invasive disease is the most lethal form. Current treatment includes surgery, cisplatin-based multi-agent chemotherapy and radiation.

"These TCGA data provide a perfect storm for advancing treatment for muscle invasive and hard-to-treat cancer," said project co-leader and co-senior author
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Contact: Scott Merville
smerville@mdanderson.org
713-792-0661
University of Texas M. D. Anderson Cancer Center
Source:Eurekalert

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