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Penn Medicine researchers identify 4 new genetic risk factors for testicular cancer
Date:5/12/2013

PHILADELPHIAA new study looking at the genomes of more than 13,000 men identified four new genetic variants associated with an increased risk of testicular cancer, the most commonly diagnosed type in young men today. The findings from this first-of-its-kind meta-analysis were reported online May 12 in Nature Genetics by researchers at the Perelman School of Medicine at the University of Pennsylvania.

The discovery of these genetic variationschromosomal "typos," so to speakcould ultimately help researchers better understand which men are at high risk and allow for early detection or prevention of the disease.

"As we continue to cast a wider net, we identify additional genetic risk factors, which point to new mechanisms for disease," said Katherine L. Nathanson, MD, associate professor in the division of Translational Medicine and Human Genetics within the department of Medicine. "Certain chromosomal regions, what we call loci, are tied into testicular cancer susceptibility, and represent a promising path to stratifying patients into risk groupsfor a disease we know is highly heritable."

Tapping into three genome-wide association studies (GWAS), the researchers, including Peter A. Kanetsky, PhD, MPH, an associate professor in the department of Biostatistics and Epidemiology, analyzed 931 affected individuals and 1,975 controls and confirmed the results in an additional 3,211 men with cancer and 7,591 controls. The meta-analysis revealed that testicular germ cell tumor (TGCT) risk was significantly associated with markers at four loci4q22, 7q22, 16q22.
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Contact: Steve Graff
stephen.graff@uphs.upenn.edu
215-349-5653
University of Pennsylvania School of Medicine
Source:Eurekalert

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