Featured Research

from universities, journals, and other organizations

Crohn's Disease Treatment Shows Promise In Clinical Trial

Date:
November 18, 2004
Source:
NIH/National Institute Of Allergy And Infectious Diseases
Summary:
In an initial clinical trial led by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, doctors found that up to 75 percent of people with Crohn's disease responded to an experimental new treatment, and up to 50 percent had long-term remission of symptoms.

In an initial clinical trial led by the National Institute of Allergy and Infectious Diseases (NIAID), part of the National Institutes of Health, doctors found that up to 75 percent of people with Crohn's disease responded to an experimental new treatment, and up to 50 percent had long-term remission of symptoms. They report these findings in the Nov. 11 issue of The New England Journal of Medicine.

Crohn's, which affects an estimated 500,000 Americans, is an autoimmune disease that attacks the bowels, causing abdominal pain, cramping, diarrhea and rectal bleeding. In severe cases, damaged bowel sections must be surgically removed.

The new treatment is an antibody designed to disable interleukin-12 (IL-12), an immune system protein involved in inflammation. People with Crohn's produce excess IL-12. Previous studies by NIAID researcher Warren Strober, M.D., linked IL-12 to the cascade of immune system events that leads to the debilitating symptoms of Crohn's disease.

"NIAID researchers have taken advantage of a potential target for preventing, early in the disease process, the devastating inflammation that excess IL-12 seems to trigger. Existing treatments, which often fail, attempt to interrupt inflammation far later in the process," says Anthony S. Fauci, M.D., director of NIAID. "This is the first test of this potential new treatment in people with Crohn's disease, and we are encouraged by the results."

The clinical trial was conducted at 15 centers in the United States, Germany and the Netherlands. Peter Mannon, M.D., and Ivan Fuss, M.D., of NIAID led the study, which enrolled 79 men and women with Crohn's disease. Most study volunteers were randomly assigned to groups where they were injected with either low- or high-dose antibody treatments on one of two possible dosing schedules. The remaining sixteen volunteers received placebo injections.

The treatment consisted of a human antibody genetically modified to attach to and disable IL-12. High IL-12 levels in people with Crohn's disease activate T cells, which in turn produce a variety of proteins--interferon, tumor necrosis factor, IL-6 and IL-18--that cause damage in Crohn's disease.

After seven injections given weekly, 12 of 16 people receiving the higher dose of anti-IL-12 antibody responded to the treatment. At the end of the 24-week trial, six of those volunteers' symptoms were in remission.

Other volunteers received seven injections, with four weeks between the first and second injection, followed by six weekly injections. In this group, 9 of 16 people receiving the higher dose had responded to the treatment at week nine. At the end of the 18-week follow-up phase, half of this group (8 people) had remission of their symptoms.

The researchers also measured levels of the other immune system proteins--interferon, tumor necrosis factor, IL-10, IL-6 and IL-18--that are produced by the activated T cells in eight volunteers who received treatment at the National Institutes of Health Clinical Center. The researchers measured the proteins before and after treatment and found that many of the inflammatory proteins had dropped dramatically by the end of treatment. The decline in these proteins suggests that blocking IL-12 worked as the doctors hoped it would, by slowing or halting the Crohn's disease process.

"Data from this early study show us that the treatment was safe and also provide evidence that the antibody treatment may be effective against inflammation in Crohn's disease. The next step is to test the treatment in a larger group of volunteers and seek the most effective dose and treatment schedule," says Dr. Mannon.

Abbott Laboratories produced the anti-IL-12 antibody. Another pharmaceutical company, Wyeth, and the National Cancer Institute, also part of NIH, contributed to study costs.

###

NIAID is a component of the National Institutes of Health, an agency of the U.S. Department of Health and Human Services. NIAID supports basic and applied research to prevent, diagnose and treat infectious diseases such as HIV/AIDS and other sexually transmitted infections, influenza, tuberculosis, malaria and illness from potential agents of bioterrorism. NIAID also supports research on transplantation and immune-related illnesses, including autoimmune disorders, asthma and allergies.

Reference: PJ Mannon et al. Anti-interleukin-12 antibody for active Crohn's disease. The New England Journal of Medicine 351(20):2069-79 (2004)

News releases, fact sheets and other NIAID-related materials are available on the NIAID Web site at http://www.niaid.nih.gov.


Story Source:

The above story is based on materials provided by NIH/National Institute Of Allergy And Infectious Diseases. Note: Materials may be edited for content and length.


Cite This Page:

NIH/National Institute Of Allergy And Infectious Diseases. "Crohn's Disease Treatment Shows Promise In Clinical Trial." ScienceDaily. ScienceDaily, 18 November 2004. <www.sciencedaily.com/releases/2004/11/041117001317.htm>.
NIH/National Institute Of Allergy And Infectious Diseases. (2004, November 18). Crohn's Disease Treatment Shows Promise In Clinical Trial. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2004/11/041117001317.htm
NIH/National Institute Of Allergy And Infectious Diseases. "Crohn's Disease Treatment Shows Promise In Clinical Trial." ScienceDaily. www.sciencedaily.com/releases/2004/11/041117001317.htm (accessed September 2, 2014).

Share This




More Health & Medicine News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

U.N. Says Ebola Travel Restrictions Will Cause Food Shortage

Newsy (Sep. 2, 2014) The U.N. says the problem is two-fold — quarantine zones and travel restrictions are limiting the movement of both people and food. Video provided by Newsy
Powered by NewsLook.com
Get on Your Bike! London Cycling Popularity Soars Despite Danger

Get on Your Bike! London Cycling Popularity Soars Despite Danger

AFP (Sep. 1, 2014) Wedged between buses, lorries and cars, cycling in London isn't for the faint hearted. Nevertheless the number of people choosing to bike in the British capital has doubled over the past 15 years. Duration: 02:27 Video provided by AFP
Powered by NewsLook.com
Can You Train Your Brain To Eat Healthy?

Can You Train Your Brain To Eat Healthy?

Newsy (Sep. 1, 2014) New research says if you condition yourself to eat healthy foods, eventually you'll crave them instead of junk food. Video provided by Newsy
Powered by NewsLook.com
We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. 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