Featured Research

from universities, journals, and other organizations

New Drug Candidate Prolongs The Lives Of Pancreatic Cancer Patients

Date:
July 21, 2009
Source:
American Friends of Tel Aviv University
Summary:
The new drug compound Salirasib has shown positive results against pancreatic cancer and recently passed Phase I/II clinical trials. The drug, given in combination with gemcitabine, the standard drug used to combat pancreatic cancer, almost doubled the life expectancy of those who received it.

Every year, 42,000 Americans are diagnosed with pancreatic cancer. Few live very long, and less than 5% are still alive five years after diagnosis.

There's new hope, though, from the lab of Prof. Yoel Kloog, dean of TAU's Faculty of Life Sciences. His drug compound Salirasib has shown positive results against pancreatic cancer and recently passed Phase I/II clinical trials. The drug, given in combination with gemcitabine, the standard drug used to combat pancreatic cancer, almost doubled the life expectancy of those who received it.

"In our study, the mean survival of pancreatic cancer patients was 10.8 months — better by far than the 6.2 months with gemcitabine alone," says Prof. Kloog, who recently presented the results to a meeting of the American Society of Clinical Oncology. His basic research offers the promise of a weapon to attack a broader range of mankind's most prevalent diseases, including lung, prostate and breast cancers as well as diabetes.

Blocking the Ras protein

Salirasib works by inhibiting a protein called Ras, which is known to be abnormally activated in one-third of human cancers. In cancer of the pancreas, mutant forms of Ras are found in up to 90% of all tumors. Salirasib's basic component, FTS, works to block the formation of cancer-promoting Ras nanoclusters, thus blocking a cascade of biochemical signals known as the "Ras signaling pathway" that allow Ras to wreak havoc on the body.

Early in the 1990s, many drug developers chased after a mechanism to inhibit Ras by targeting enzymes that modify it, but they were unsuccessful. "The major developers gave up, claiming Ras is not targetable," says Prof. Kloog, "but our concept takes a different approach. Now that we've shown it works in human subjects, I am definitely excited — no doubt about it." Prof. Kloog developed the Ras antagonist more than 15 years ago.

No toxic side effects

In the latest study, researchers tested for both toxicity and effectiveness. They gave 19 patients with advanced pancreatic cancer daily doses of salirasib along with a standard gemcitabine regimen. Salirasib was well tolerated by the patients, and they surpassed on average the number of months they would have lived on gentamiacine alone. There were no toxic side effects, such as heart or lung ailments. Tumor biopsies showed a significant reduction in Ras levels, suggesting that the drug is inhibiting the action of Ras in the tumor itself.

For this study, Salirasib was licensed by Concordia Pharmaceuticals, which collaborated with the Memorial Sloan Kettering Cancer Center, Johns Hopkins, the M.D. Anderson Cancer Center and other institutes in the United States.

If Phase II/III trials are successful, Prof. Kloog's drug will be the first successful Ras antagonist known to medical science. Salirabib could be medically available in as little as two years.


Story Source:

The above story is based on materials provided by American Friends of Tel Aviv University. Note: Materials may be edited for content and length.


Cite This Page:

American Friends of Tel Aviv University. "New Drug Candidate Prolongs The Lives Of Pancreatic Cancer Patients." ScienceDaily. ScienceDaily, 21 July 2009. <www.sciencedaily.com/releases/2009/07/090720134512.htm>.
American Friends of Tel Aviv University. (2009, July 21). New Drug Candidate Prolongs The Lives Of Pancreatic Cancer Patients. ScienceDaily. Retrieved September 17, 2014 from www.sciencedaily.com/releases/2009/07/090720134512.htm
American Friends of Tel Aviv University. "New Drug Candidate Prolongs The Lives Of Pancreatic Cancer Patients." ScienceDaily. www.sciencedaily.com/releases/2009/07/090720134512.htm (accessed September 17, 2014).

Share This



More Health & Medicine News

Wednesday, September 17, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

President To Send 3,000 Military Personnel To Fight Ebola

President To Send 3,000 Military Personnel To Fight Ebola

Newsy (Sep. 16, 2014) President Obama is expected to send 3,000 troops to West Africa as part of the effort to contain Ebola's spread. Video provided by Newsy
Powered by NewsLook.com
Man Floats for 31 Hours in Gulf Waters

Man Floats for 31 Hours in Gulf Waters

AP (Sep. 16, 2014) A Texas man is lucky to be alive after he and three others floated for more than a day in the Gulf of Mexico when their boat sank during a fishing trip. (Sept. 16) Video provided by AP
Powered by NewsLook.com
Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

Ivorians Abandon Monkey Pets in Fear Over Ebola Virus

AFP (Sep. 16, 2014) Since the arrival of Ebola in Ivory Coast, Ivorians have been abandoning their pets, particularly monkeys, in the fear that they may transmit the virus. Duration: 00:47 Video provided by AFP
Powered by NewsLook.com
Study Links Male-Pattern Baldness To Prostate Cancer

Study Links Male-Pattern Baldness To Prostate Cancer

Newsy (Sep. 16, 2014) New findings suggest men with a certain type of baldness at age 45 are 39 percent more likely to develop aggressive prostate cancer. Video provided by Newsy
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:
from the past week

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