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Linking of mutations in 12 genes to ovarian cancer may lead to more effective prevention
Date:10/25/2011

More patients with ovarian carcinoma carry cancer-predisposing mutations, and in more genes, than previously thought.

A rapid experimental method for screening genomes has located mutations in 12 genes for inherited cancers of the ovary, fallopian tubes and peritoneum (the thin tissue lining the lower abdomen).

More than one-fifth of ovarian cancers arise in women with a familial predisposition, but relying on family history would have missed one-third of the cases, said Dr. Elizabeth Swisher, senior author of a paper on these findings published online ahead of print in the Proceedings of the National Academy of Sciences.

Swisher is an associate professor of obstetrics and gynecology at the University of Washington in Seattle. She directs the Breast and Ovarian Cancer Prevention program at the UW and the Seattle Cancer Care Alliance, and is an affiliate researcher at the Fred Hutchinson Cancer Research Center.

The results of her most recent study have far reaching implications beyond the important identification of mutations linked to ovarian and related cancers.

The speedy, low-cost genome analysis method her team developed could soon be applicable to patient testing for a broad range of all known breast, ovarian, colon, pancreatic and melanoma gene mutations. A single test might be able to screen a patient for susceptibility to all these cancers.

Also, the great number of specimens that this method can analyze simultaneously could allow for large scale, population studies of cancer-causing mutations. Such studies would tell who is at risk for certain cancers and how to effectively target prevention.

The UW scientists named their sequencing method BROCA, after Paul Broca, a 19th century medical scientist who was among the first to describe inherited breast and ovarian cancer. BROCA, the researchers said, is highly sensitive and can find all classes of genetic mutations, includi
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Contact: Leila Gray
leilag@u.washington.edu
206-685-0381
University of Washington
Source:Eurekalert  

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