Featured Research

from universities, journals, and other organizations

Predicting Patient Response To Gleevec In Gastrointestinal Stromal Tumors

Date:
April 29, 2009
Source:
Fox Chase Cancer Center
Summary:
Researchers have uncovered a genetic pattern that may help predict how gastrointestinal stromal tumor patients respond to the targeted therapy imatinib mesylate. Moreover, their findings point to genes that could be suppressed in order to make these tumors respond more readily to imatinib.

Researchers at Fox Chase Cancer Center uncovered a genetic pattern that may help predict how gastrointestinal stromal tumor (GIST) patients respond to the targeted therapy imatinib mesylate (Gleevec). Moreover, their findings point to genes that could be suppressed in order to make these tumors respond more readily to imatinib.

Related Articles


Lori Rink, Ph.D., a postdoctoral fellow in the laboratory of Andrew K. Godwin, Ph.D. at Fox Chase, presents their findings today, at the 100th Annual Meeting of the American Association for Cancer Research. The study uses tumor specimens collected as part of a Phase II trial on the use of the drug before surgical resection for GIST, which is led by the Radiation Therapy Oncology Group, a national clinical cooperative group funded by the National Cancer Institute.

"Imatinib has been the first drug that has really made a dent in GIST progression – up to 80 percent response – yet some GIST patients have little or no response to the drug," says Rink "We are looking to see how we can help clinicians make better decisions in applying imatinib or additional therapies to their GIST patients."

Rink and her colleagues followed 63 GIST patients in the RTOG trial, who were given imatinib before surgery for primary or recurrent tumors. Using tumor samples collected before and after the patients were given the drug, the researchers studied which genes were active in the tumors and then compared these profiles of gene expression to how well the tumors responded to short-term imatinib treatment.

According to Rink, they found a selection of 38 genes that were expressed higher in tumors that did not respond well to imatinib. Of these, they identified 20 KRAB-zinc finger genes that encode for proteins that typically act as transcriptional repressors of other genes. Ten of these genes, Rink says, are located to a single section of Chromosome 19.

"Our data indicate that if we can alter the activity of some of these KRAB-zinc finger proteins, we may be able to enhance the effectiveness of imatinib therapy," Rink says.

Funding for this study comes from the National Cancer Institute, the Radiation Therapy Oncology Group Foundation and the GIST Cancer Research Fund.


Story Source:

The above story is based on materials provided by Fox Chase Cancer Center. Note: Materials may be edited for content and length.


Cite This Page:

Fox Chase Cancer Center. "Predicting Patient Response To Gleevec In Gastrointestinal Stromal Tumors." ScienceDaily. ScienceDaily, 29 April 2009. <www.sciencedaily.com/releases/2009/04/090421154329.htm>.
Fox Chase Cancer Center. (2009, April 29). Predicting Patient Response To Gleevec In Gastrointestinal Stromal Tumors. ScienceDaily. Retrieved October 31, 2014 from www.sciencedaily.com/releases/2009/04/090421154329.htm
Fox Chase Cancer Center. "Predicting Patient Response To Gleevec In Gastrointestinal Stromal Tumors." ScienceDaily. www.sciencedaily.com/releases/2009/04/090421154329.htm (accessed October 31, 2014).

Share This



More Health & Medicine News

Friday, October 31, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

U.S. Ebola Response Measures Demonstrated

U.S. Ebola Response Measures Demonstrated

AP (Oct. 31, 2014) Officials in the Washington area showed off Ebola response measures being taken at Dulles International Airport and the National Institutes of Health. (Oct. 31) Video provided by AP
Powered by NewsLook.com
Fauci Says Ebola Risk in US "essentially Zero"

Fauci Says Ebola Risk in US "essentially Zero"

AP (Oct. 30, 2014) NIAID Director Anthony Fauci said the risk of Ebola becoming an epidemic in the U.S. is essentially zero Thursday at the Washington Ideas Forum. He also said an Ebola vaccine will be tested in West Africa in the next few months. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Nurse Defies Ebola Quarantine With Bike Ride

Nurse Defies Ebola Quarantine With Bike Ride

AP (Oct. 30, 2014) A nurse who vowed to defy Maine's voluntary quarantine for health care workers who treated Ebola patients followed through on her promise Thursday, leaving her home for an hour-long bike ride. (Oct. 30) Video provided by AP
Powered by NewsLook.com
Pot-Infused Edibles Raise Concerns in Colorado

Pot-Infused Edibles Raise Concerns in Colorado

AFP (Oct. 30, 2014) Colorado may have legalized marijuana for recreational use, but the debate around the decision still continues, with a recent - failed - attempt to ban cannabis-infused edibles. Duration: 01:53 Video provided by AFP
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