A new research suggests that a simple blood or urine test could soon identify men with an elevated, genetically-inherited risk for the disease. The study is available online and will be published in an upcoming issue of the journal Cancer Discovery.
The study compared 7,783 men with prostate cancer to 38,595 men without the disease.
The researchers modeled prostate cancer risk using 105 specific bits of DNA that are associated with prostate cancer risk. While they estimated that each of these genetic variants only modestly alters risk, they determined that men with combinations of these DNA variants placed them among the highest 10% for risk for prostate cancer. The researchers determined that these men were more than six times as likely to be diagnosed with prostate cancer compared to the men who ranked among the lowest 10% for prostate cancer risk.
"We developed a risk model that may have clinical value," said lead researcher John Witte, professor of epidemiology and biostatistics and of urology at the University of California-San Francisco.
"We also showed that there remain substantial undiscovered genetic risk factors for prostate cancer," Witte noted. Genetic risk factors often act differently in individuals with different genetic backgrounds, including individuals from different ethnic backgrounds.
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