Featured Research

from universities, journals, and other organizations

Complete Response With Oblimersen Combination Improves Survival Of CLL Patients

Date:
December 10, 2007
Source:
University of Texas M. D. Anderson Cancer Center
Summary:
Relapsed chronic lymphocytic leukemia (CLL) patients who had a complete response to combination therapy that included the drug oblimersen survived significantly longer than patients treated with chemotherapy alone, a team led by researchers at the University of Texas M. D. Anderson Cancer Center reports at the 49th Annual Meeting of the American Society of Hematology.

Relapsed chronic lymphocytic leukemia (CLL) patients who had a complete response to combination therapy that included the drug oblimersen survived significantly longer than patients treated with chemotherapy alone, a team led by researchers at The University of Texas M. D. Anderson Cancer Center reports at the 49th Annual Meeting of the American Society of Hematology.

Patients who achieved a complete response with oblimersen have survived so well that a median survival time cannot yet be calculated, but it is estimated to exceed 49 months. Those who achieved complete response with chemotherapy alone had a median survival time of 35 months.

"In a relapsed population, that's excellent survival," says lead author Susan O'Brien, M.D., professor in M. D. Anderson's Department of Leukemia. "Survival is associated with achieving complete response."

The Phase III clinical trial compared a regimen of fludarabine and cyclophosphamide (F/C) with F/C plus oblimersen. Known commercially as Genasense(r), oblimersen blocks the Bcl-2 protein, which plays a critical role in progression of chronic lymphocytic leukemia (CLL), including development of resistance to treatment.

By stifling Bcl-2, researchers believe CLL becomes more vulnerable to chemotherapy such as the F/C combination.

In a paper published in the Journal of Clinical Oncology in March, O'Brien and colleagues showed that patients who received the oblimersen combination were more likely to have a complete response (20 out of 120 patients, or 17 percent, compared to 8 out of 121 patients, 7 percent, who received only the F/C chemotherapy).

Complete response was more durable in the oblimersen-treated patients, with a median duration of at least 36 months compared with 22 months for those on F/C alone.

The question unanswered by the JCO paper was whether this advantage in complete response translated into an advantage in survival, O'Brien says.

Patients were followed for at least three years after randomization or until death or withdrawal from the study. Of the 20 oblimersen-treated patients with a complete response at the end of the first year, 12 survived at least four years. Of the eight complete responders in the other group, four survived at least four years.

The survival data confirm that complete response is a valid endpoint for clinical trials in relapsed or resistant CLL, O'Brien says.

Approval of Genasense(r), produced by Genta, Inc., for CLL is on appeal at the U.S. Food and Drug Administration.

Co-authors with O'Brien are: Joseph Moore, M.D., of Duke University Medical Center; Lily Ding, Ph.D., and Steven Novick, of Genta Inc.; and Kanti Rai, M.D., of Long Island Jewish Medical Center.


Story Source:

The above story is based on materials provided by University of Texas M. D. Anderson Cancer Center. Note: Materials may be edited for content and length.


Cite This Page:

University of Texas M. D. Anderson Cancer Center. "Complete Response With Oblimersen Combination Improves Survival Of CLL Patients." ScienceDaily. ScienceDaily, 10 December 2007. <www.sciencedaily.com/releases/2007/12/071210094418.htm>.
University of Texas M. D. Anderson Cancer Center. (2007, December 10). Complete Response With Oblimersen Combination Improves Survival Of CLL Patients. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2007/12/071210094418.htm
University of Texas M. D. Anderson Cancer Center. "Complete Response With Oblimersen Combination Improves Survival Of CLL Patients." ScienceDaily. www.sciencedaily.com/releases/2007/12/071210094418.htm (accessed July 22, 2014).

Share This




More Health & Medicine News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Courts Conflicted Over Healthcare Law

Courts Conflicted Over Healthcare Law

AP (July 22, 2014) Two federal appeals courts issued conflicting rulings Tuesday on the legality of the federally-run healthcare exchange that operates in 36 states. (July 22) Video provided by AP
Powered by NewsLook.com
Why Do People Believe We Only Use 10 Percent Of Our Brains?

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Newsy (July 22, 2014) The new sci-fi thriller "Lucy" is making people question whether we really use all our brainpower. But, as scientists have insisted for years, we do. Video provided by Newsy
Powered by NewsLook.com
Scientists Find New Way To Make Human Platelets

Scientists Find New Way To Make Human Platelets

Newsy (July 22, 2014) Boston scientists have discovered a new way to create fully functioning human platelets using a bioreactor and human stem cells. Video provided by Newsy
Powered by NewsLook.com
Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

TheStreet (July 21, 2014) New research shows Gilead Science's drug Sovaldi helps in curing hepatitis C in those who suffer from HIV. In a medical study, the combination of Gilead's Hep C drug with anti-viral drug Ribavirin cured 76% of HIV-positive patients suffering from the most common hepatitis C strain. Hepatitis C and related complications have been a top cause of death in HIV-positive patients. Typical medication used to treat the disease, including interferon proteins, tended to react badly with HIV drugs. However, Sovaldi's %1,000-a-pill price tag could limit the number of patients able to access the treatment. TheStreet's Keris Lahiff reports from New York. Video provided by TheStreet
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