Scientists find second site for prostate c...( WINSTON-SALEM N.C. Scientists at Wa...),Health
WINSTON-SALEM, N.C. Scientists at Wake Forest University School of Medicine and colleagues who are studying a prostate cancer gene called HNF1B have found a second independent site within the HNF1B gene on chromosome 17 (17q12) increasing the number of genetic variants that may contribute to risk of developing the disease.
After comparing the newly-discovered site with a previously discovered site in the same gene among two large groups of patients in Sweden and at Johns Hopkins Hospital in Baltimore, "these data strongly suggest that the two sites are genetically independent," said Jianfeng Xu, M.D., Dr. Ph.H., senior researcher on the study.
"We found another genetic variant associated with prostate cancer risk," Xu said. "The more genetic variants we discover, the better off we are. As we find more of these, it improves our ability to predict prostate cancer risk."
Xu, a professor of epidemiology and cancer biology and Director of the Center for Cancer Genomics, reported the results with 30 colleagues in the current on-line version of Nature Genetics.
The researchers conducted what they termed a "fine-mapping study" in the two groups, one called CAPS, from Sweden, that had 2,899 prostate cancer cases and 1,722 control participants, and the Johns Hopkins study that had 1,527 prostate cancer patients and 482 control participants.
They found two separate clusters of prostate-cancer-associated SNPs (single nucleotide polymorphisms), one in a region previously identified and one in a new region. The researchers then worked to see whether the genetic variants were associated with risk of developing the disease. They looked at the same locations in five other large studies of prostate cancer patients and found that prostate cancer risk was higher among men who had the genetic variants. Earlier this year, the same research group reported in the New England Journal of Medicine that genetic variants have
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| Contact: Jessica Guenzel jguenzel@wfubmc.edu 336-716-3487 Wake Forest University Baptist Medical Center Source:Eurekalert |
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