Navigation Links
Study pinpoints malignant mesothelioma patients likely to benefit from drug pemetrexed
Date:8/29/2012

Previous studies have hypothesized that low levels of the enzyme thymidylate synthase (TS) likely mark patients who will benefit from the drug pemetrexed but results have been inconclusive at best and at times contradictory. A University of Colorado Cancer Center study recently published in the Journal of Thoracic Oncology provides an explanation why: only in combination with high levels of a second enzyme, FPGS, does low TS predict response to pemetrexed in patients with malignant pleural mesothelioma.

"The hope is that oncologists could test a patient for TS and FPGS levels and so discover if the patient should be treated with pemetrexed or if another therapy might be more appropriate," says the paper's first author, Daniel C. Christoph, MD, PhD, medical oncologist at the West German Cancer Center, working as an international postdoctoral researcher in the lab of CU Cancer Center investigator, Fred Hirsch, MD, PhD.

Pemetrexed works by inhibiting the enzyme TS, which cancer cells need in order to replicate their DNA. So it stands to reason that tumors already low in TS would be most affected by the drug blocking the remaining TS would effectively stop the ability of cancer cells to synthesize new DNA. However, Christoph and colleagues tested 84 samples of mesothelioma in which patients had been treated with pemetrexed and found that low levels of TS only in combination with concurrently high levels of FPGS predicted patients' response to the drug.

The study also explained the mechanism by which FPGS increases the clinical effectiveness of pemetrexed:

"High levels of FPGS allow pemetrexed to stay longer inside cells, giving the drug longer to work against TS," Christoph says. Of the samples tested, patients with low TS and high FPGS had more response to pemetrexed and longer durations of survival.

According to Christoph, the current study provides the preclinical work needed to justify exploring the predictive power of TS and FPGS in mesothelioma patients. A prospective observational study of these biomarkers could lead to their wide use in predicting patients' response to pemetrexed.


'/>"/>
Contact: Garth Sundem
garth.sundem@ucdenver.edu
University of Colorado Denver
Source:Eurekalert

Related medicine news :

1. Study Suggests Vaccine May Help Kids With Brain Cancer
2. Study reveals how cancer drug causes diabetic-like state
3. Coffee Drinking in Pregnancy Wont Lead to Sleepless Baby: Study
4. Lower GI problems plague many with rheumatoid arthritis, Mayo Clinic study finds
5. Veggies Like Broccoli, Cabbage May Help Fight Breast Cancer: Study
6. No Added Cancer Risk From Hip Replacement Materials: Study
7. Reported Decline in U.S. Pneumonia Deaths May Be False: Study
8. Early Study Finds Some Promise for Lung Cancer Vaccine
9. Narcissists Often Ace Job Interviews, Study Finds
10. Sexual objectification of female artists in music videos exists regardless of race, MU study finds
11. Soy may alleviate hot flashes in menopause, large-scale study finds
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/24/2017)... ... March 24, 2017 , ... In ... innovative EcoQube Frame vertical micro-veggies garden on Kickstarter . Surpassing the $100,000 ... – with nearly 2,000 consumers (and counting) already backing the campaign. , ...
(Date:3/24/2017)... ... March 24, 2017 , ... Viewers who like to ... critical historical facts, cultural practices, goods, services, and societal issues tend to appreciate and ... into the popular practice of utilizing running events for causes around the world. ...
(Date:3/24/2017)... , ... March 24, 2017 , ... “End Time GPS”: ... salient events will interrelate. “End Time GPS” is the creation of published author, ... expert while working on military munitions and space-vehicle projects. Now, at age ninety-one, he ...
(Date:3/23/2017)... CO (PRWEB) , ... March 23, 2017 , ... A ... bar for entry into teacher preparation programs. The NCTQ report suggests, based on a ... entry requirements would significantly improve teacher quality in the U.S. It argues that this ...
(Date:3/23/2017)... , ... March 23, 2017 , ... The IoT (Internet ... WiFi connectivity are making a huge impact on businesses and individual consumers alike. ... the IoT will have a value anywhere from $4 trillion to $11 trillion dollars ...
Breaking Medicine News(10 mins):
(Date:3/24/2017)... Mar 24, 2017 Research and Markets has ... Strategic Business Report" report to their offering. ... The report provides separate comprehensive analytics for the ... Europe , Asia-Pacific , Latin ... provided for the period 2015 through 2022. Also, a six-year historic analysis ...
(Date:3/24/2017)... -- HealthMine surveys with 9,250 insured consumers fielded from February ... want help from their plans in five key areas: ... 2) help closing gaps in care, 3) better digital ... relevant, real-time guidance. Meeting these needs is essential to ... A Reason to Stay Engaged in Health ...
(Date:3/24/2017)... and GENEVA , March 24, ... World Tuberculosis Day revitalizes efforts to develop sutezolid as ... On World Tuberculosis Day, TB Alliance and the Medicines ... clinical development of sutezolid, an antibiotic drug candidate which ... to the development of sutezolid in combination with other ...
Breaking Medicine Technology: