Navigation Links
Ovarian cancers detected early may be less aggressive, questioning effectiveness of screening
Date:3/24/2009

DURHAM, N.C. -- The biology of ovarian cancers discovered at an early stage may render them slower growing and less likely to spread than more aggressive cancers, which typically are discovered in an advanced stage, according to a study led by investigators in the Duke Comprehensive Cancer Center. This finding has implications for the question of whether screening for ovarian cancer could save lives.

"Our study showed that the ovarian cancers currently detected at an early stage have gene expression profiles that correlate with favorable outcome, rather than being representative of the entire spectrum of disease aggressiveness," said Andrew Berchuck, M.D., a gynecologic oncologist at Duke and lead investigator on this study. "This highlights the potential challenges of developing a screening test for this disease, because earlier detection of aggressive cases is essential if screening is to reduce ovarian cancer deaths."

The results of this study and the implications for screening as an approach to decreasing mortality parallel the challenges seen in lung cancer and prostate cancer. In those cancers, while screening approaches based on radiological imaging and/or blood markers detect cancers, it remains unclear whether cancer-related deaths are prevented because screening preferentially detects more benign cancers that are much less likely to be fatal, Berchuck said.

"While these results could be seen as discouraging, it must be remembered that this information is an important piece of the ovarian cancer puzzle, and data like these that increase our understanding of the disease hopefully will eventually lead to breakthroughs in prevention, early detection and treatment of this deadly disease," Berchuck said.

Although there is currently no approved ovarian cancer screening test for the general population, the CA125 blood test and transvaginal ultrasound imaging currently are being evaluated in clinical trials.

The researchers looked at gene expression patterns in 166 ovarian cancer tissue samples taken from patients who were treated at Duke, H. Lee Moffitt Cancer Center and Memorial Sloan-Kettering Cancer Center and from the Gynecologic Oncology Group Tumor Bank. For this study, researchers examined samples of advanced ovarian cancers from patients who had experienced long-term survival -- over seven years -- and patients who had done extremely poorly, and died within three years of diagnosis.

The researchers used microarrays a method for examining thousands of snippets of DNA -- with about 22,000 probe sets to examine patterns of gene expression among the samples, and identified genes that were most predictive of survival.

"We found that certain patterns predicted long-term survival and others predicted a poorer prognosis in advanced stage cases," Berchuck said. "Cancers that were detected at an early stage almost always shared gene expression characteristics with advanced stage cases that were long-term survivors, suggesting a shared favorable biology."


'/>"/>

Contact: Lauren Shaftel Williams
lauren.shaftel@duke.edu
919-684-4966
Duke University Medical Center
Source:Eurekalert

Related medicine news :

1. Morphotek(R), Inc. and Eisai Corporation of North America Announce FDA Special Protocol Assessment (SPA) for Phase III Trial Evaluating Farletuzumab in Relapsed Ovarian Cancer
2. Combo Screening Doesnt Spot Early Ovarian Cancer
3. Early Detection Remains Key in Updated NCCN Guidelines for Ovarian Cancer
4. Combo of Tests Might Spot Ovarian Cancer Early
5. Biomarker Combination and Risk of Ovarian Malignancy Algorithm (Roma(TM)) Demonstrates Accuracy in Detecting Ovarian Cancer
6. Fertility Drugs Do Not Increase Ovarian Cancer Risk
7. Angiogenesis linked to poor survival in patients with rare type of ovarian cancer
8. Fujirebio Diagnostics and Abbott Agree To Develop New Ovarian Cancer Test for Abbotts Architect(R) Analyzers
9. The 2009 Damon Runyon-Rachleff Innovation Award Granted for Pioneering Ideas for Early Detection of Ovarian and Lung Cancers, Bone Marrow Transplant Safety, and Discovery of New Genetic Markers for Cancer
10. Treadmill Desks Combat Obesity Linked to Higher Rates of Ovarian Cancer
11. Obesity Linked to Ovarian Cancer
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/16/2017)... ... January 16, 2017 , ... Permobil has just completed the ... custom seating systems has a well-earned reputation for premium quality, with a focus ... and growth in the custom seating business, which enjoys strong demand, and it ...
(Date:1/16/2017)... ... January 16, 2017 , ... Date aired: January ... , Sharon Kleyne, America’s leading water educator, researcher and advocate welcomed health ... program, The Sharon Kleyne Hour Power of Water, Global Climate Change and Your ...
(Date:1/16/2017)... Francisco, CA (PRWEB) , ... January 16, 2017 , ... ... incorporation of iTero Element, the latest in 3-D scanning device which is capable of ... of the latest advances in dentistry, such as CAD CAM restorations , in ...
(Date:1/15/2017)... Ohio (PRWEB) , ... January 15, 2017 , ... ... applications, Gensuite’s Community Outreach is a program that strives to better communities around ... each global locations’ community. It also provides the opportunity for team members to ...
(Date:1/15/2017)... (PRWEB) , ... January 15, 2017 , ... ... choice of best physicians in eight Bay Area counties for 2017. Almost 1,000 ... healthcare research company managing the award process. Results were announced the magazine’s ...
Breaking Medicine News(10 mins):
(Date:1/16/2017)... PUNE, India , January 16, 2017 ... published by Allied Market Research, titled, "Sterilization Technologies Market ... Industry Forecast, 2014-2022," the global sterilization technologies market is ... million in 2015, growing at a CAGR of 5.8% ... segment dominated the market in 2015, with more than ...
(Date:1/16/2017)... Bill is an internationally experienced medical device industry executive who has ... medical device companies, including Smith & Nephew, Angiodynamics, Orthovita and Stryker. ... building successful businesses in the sector and has worked in ... North America . ... Educated at the University of Edinburgh (Dental Surgery), University ...
(Date:1/16/2017)... BOULDER, Colo. , Jan. 16, 2017 ... to donate large amounts of phyto-nutrient rich hemp extract ... announces the donation of their proprietary hemp extract to ... makes CBDRx the best hemp company in the world ... the best, most nutritious, full spectrum phyto-nutrient rich hemp ...
Breaking Medicine Technology: