Scientists Discover New Drug Targets for Crohn's Disease

Gene-searching method uncovered more players in painful gastrointestinal condition

Posted: February 26, 2009

THURSDAY, Feb. 26 (HealthDay News) -- An international team of researchers has pinpointed new genetic targets for drugs to treat Crohn's disease, a chronic and painful condition caused by inflammation of the gastrointestinal tract.

The Children's Hospital of Philadelphia-led group used a new gene-searching method, combining a statistical tool that identifies genes interacting on the same biological pathways with highly automated gene-hunting techniques that scan the whole genome.

An initial analysis was performed on DNA from 1,758 Crohn's patients and 1,480 people without the disease. All of them were of European ancestry. The analysis was repeated in three more groups, of both European and African ancestry.

"Among hundreds of known biological pathways, the one that surfaced from the analysis as being most significant included genes already known to be relevant to the biology of Crohn's disease," study leader Dr. Hakon Hakonarson, director of the Center for Applied Genomics at Children's Hospital, said in a news release from the hospital.

The interleukin 12 (IL12) pathway governs cell receptors involved in the developed of Crohn's disease. Previous research has found that monoclonal antibodies that block the IL12 receptor show some clinical success in treating Crohn's disease.

The study was published online and in the March 13 print issue of The American Journal of Human Genetics.

"As we better understand the gene pathways operating in Crohn's disease, we are uncovering more potential targets for effective drug treatments," study co-author Dr. Robert Baldassano, a pediatric gastroenterologist and director of the Center for Pediatric Inflammatory Bowel Disease at Children's Hospital, said in the same news release.

Developing targeted therapies based on gene pathways might enable doctors to tailor treatments to a patient's genetic profile, he added.

More information

The Crohn's and Colitis Foundation of American has more about Crohn's disease.

Crohn's - I have it

Hello,

I see the posts are of people who know of another who has the disease. Well, I have it! I was diagnosed in 1976 when I was just 13 years old – I had lost more than half my normal body weight. I was literally a walking skeleton at this time. I had taken steroids (prednisone) up till I was 17 to suppress the disease. I was normal weight, and normal behavior, however, I was operated on at that time. I had to have a bowel resect - about 12 centimeters - not bad. After a year or so post-op, I had to start taking steroids again and stayed on them up through my 20's. Through my 30's I did not take a lot of steroids.... I was much stronger and knew how the disease impacted me – and I was rebelling against medical treatment. I watched my diet and just took it on the chin for the most part. Had trouble with fistulas, the works ... many local operations to lance cysts, and I took lots of antibiotics because of infections. Then in 2004 I was operated on again .... another bowel resect. I did pretty good between surgeries. My number one concern for others is the approach doctors take, given their philosophy. Jokingly, a surgeon approaches curing a headache with the scalpel. My second surgeon wanted to remove my entire large bowel. I refused because I knew only part of it was affected with disease. His philosophy was to remove all of it and the disease will go away. That is not necessarily true. This in my eyes opens the opportunity for the disease to start attacking my small bowel and other areas of my body. About 4 years ago after the second surgery I went on immune-suppressant drugs (viz, Remicade). Worked wonders for me. I hated going to the clinic for infusions though. About two months ago I started Humera, a self injection treatment program. I am doing well. I am a Doctor of Education now, and I have studied Medical Anthropology over the years also. I know this disease and doctors from my own experiences. There is no cure at the moment … but you can productively live with it …. even forget you have it if you treat it right. My best to everyone battling this disease. If you have any questions please write.

Dr Marc

Dr Marc Debiase of WV @ Sep 14, 2009 11:13:44 AM

crohn's relief capsules

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richard bailey of KS @ Aug 26, 2009 10:56:27 AM

Hi

I have a nephew that has Chrone's disease and he is a identical twin is brother doesn't have it and he is trying to get chemo done but i can't think of the drug i think it starts w/a "R" do u know?

Shannon Bell of TX @ Aug 09, 2009 15:38:24 PM

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