Featured Research

from universities, journals, and other organizations

Genetic Risk Factors May Tailor Prostate Cancer Screening Approaches

Date:
November 21, 2008
Source:
American Association for Cancer Research
Summary:
Five genetic risk markers for prostate cancer may allow physicians to adapt screening approaches for men at high-risk, particularly African-American men, according to new research.

Men with a family history of prostate cancer and African-American men are particularly susceptible to the disease, with a twofold to sevenfold increased risk. Assessing risk in these populations has been difficult.

Related Articles


"There have been years of effort to try to identify genes and genetic mutations associated with prostate cancer as there are for breast cancer," said Veda N. Giri, M.D., director of the Prostate Cancer Risk Assessment Program (PRAP) at Fox Chase Cancer Center, Philadelphia. "Prostate cancer is a more genetically complex disease."

Giri and colleagues studied patients who are part of the center's Prostate Cancer Risk Assessment Program, an early detection program for men with a high prostate cancer risk. More than 700 participants are enrolled; 60 percent are African-American.

The investigators evaluated the clinical characteristics of men at high risk for prostate cancer; those who carry five genetic single nucleotide polymorphisms (SNPs) that have been associated with prostate cancer in recent studies. These genetic changes have mostly been reported in predominantly Caucasian populations and are being studied in African-American men as well.

"We are interested in looking at how these genetic risk markers can be used for assessing the risk for prostate cancer in high-risk men," said Giri. "These are men who have not yet developed prostate cancer, such as African-American men and men with family members with the disease. Can these markers be used as an indicator of upcoming prostate cancer?"

The men enrolled in PRAP are aged 35 to 69 years and meet one of the following criteria: one first-degree relative with prostate cancer or two second-degree relatives with prostate cancer on the same side of the family. The group also includes African-American men with BRCA 1/2 mutations.

Giri and colleagues compared the Caucasian high-risk men in PRAP with a control group, an all-Caucasian set of men who have no family or personal history of the disease. The men in the control group are at low risk for developing prostate cancer. Analysis revealed that while there was an effect found for increased risk for prostate cancer in Caucasian men at high-risk for several of these markers, none of the results were statistically significant. This could be related to the low sample size used in the study. When comparing these five genetic markers in high-risk Caucasian men with men already diagnosed with prostate cancer, the distribution of the markers was similar. This might indicate that these markers are clinically useful in Caucasian men at risk for prostate cancer, although further study is needed.

"When we compared African-American men in PRAP to the high-risk Caucasian men in PRAP, we did find a difference," she said. "African-American men tended to carry more of these genetic risk markers compared to the Caucasian men. Since African-American men carry more of these particular genetic markers, they may be more informative for prostate cancer risk assessment in African-American men."

The researchers then studied how these markers influence time to prostate cancer diagnosis. "We found a trend that African-American men who carried more of these risk markers tended to develop prostate cancer earlier," Giri said. This finding did not reach statistical significance.

Giri said the take-home message from this study is that genetic markers associated with prostate cancer risk need to be characterized in prospective screening populations in order to determine how to incorporate them into risk assessment for prostate cancer, particularly for men at high-risk for the disease. "These markers may have significant use in personalizing the early detection of prostate cancer in men at high-risk in order to provide tailored recommendations for screening and diagnosis of this disease," said Giri.


Story Source:

The above story is based on materials provided by American Association for Cancer Research. Note: Materials may be edited for content and length.


Cite This Page:

American Association for Cancer Research. "Genetic Risk Factors May Tailor Prostate Cancer Screening Approaches." ScienceDaily. ScienceDaily, 21 November 2008. <www.sciencedaily.com/releases/2008/11/081117103638.htm>.
American Association for Cancer Research. (2008, November 21). Genetic Risk Factors May Tailor Prostate Cancer Screening Approaches. ScienceDaily. Retrieved February 28, 2015 from www.sciencedaily.com/releases/2008/11/081117103638.htm
American Association for Cancer Research. "Genetic Risk Factors May Tailor Prostate Cancer Screening Approaches." ScienceDaily. www.sciencedaily.com/releases/2008/11/081117103638.htm (accessed February 28, 2015).

Share This


More From ScienceDaily



More Health & Medicine News

Saturday, February 28, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Could a $34 Smartphone Device Improve HIV Diagnosis in Africa?

Reuters - Innovations Video Online (Feb. 27, 2015) A dongle that plugs into a Smartphone mimics a lab-based blood test for HIV and syphilis and can detect the diseases in 15 minutes, say researchers. Tara Cleary reports. Video provided by Reuters
Powered by NewsLook.com
Doctor Says Head Transplants Possible Within Two Years

Doctor Says Head Transplants Possible Within Two Years

Buzz60 (Feb. 27, 2015) An Italian doctor is saying he could stick someone&apos;s head onto someone else&apos;s body. Patrick Jones (@Patrick_E_Jones) reports. Video provided by Buzz60
Powered by NewsLook.com
How Your Dentist Could Help Screen You For Diabetes

How Your Dentist Could Help Screen You For Diabetes

Newsy (Feb. 27, 2015) A new study from researchers at New York University suggests dentists could soon use blood samples taken from patients&apos; mouths to test for diabetes. Video provided by Newsy
Powered by NewsLook.com
The Best Tips to Makeover Your Health

The Best Tips to Makeover Your Health

Buzz60 (Feb. 27, 2015) If you&apos;re looking to boost your health this season, there are a few quick and easy steps to prompt you for success. Krystin Goodwin (@Krystingoodwin) has the best tips to give your health a makeover this spring! Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins