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Do You have Crohn's Disease or Ulcerative Colitis?
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You may be eligible to volunteer in a study of the immune regulation of idiopathic inflammatory bowel diseases

About the study

An estimated 1.4 million persons in the United States suffer from inflammatory bowel diseases (IBD), the most common of which are ulcerative colitis and Crohn's disease. Although the cause of IBD is unknown, it is thought to involve genetic, immunologic, and environmental factors. The goals of this study are to learn more about genetic and immune factors that contribute to IBD and gather information that may lead to better treatment options.

Who can participate?

You may be eligible to participate if you are 18 to 75 years old and:

  • Have Crohn's disease or ulcerative colitis
  • Are willing to have a colonoscopy

What does the study involve?

Study participants may undergo blood draws, medical history, and other procedures.

Where is the study taking place?

The study is being conducted at the National Institutes of Health (NIH) Clinical Center (Building 10) in Bethesda, Maryland. The NIH campus is accessible by car and public transportation.

How much does it cost?

There is no charge to participate in this research study. All study-related medical care and procedures are provided free of charge.

Will I receive payment?

You may be compensated for your participation in the study. Transportation and other expenses also may be covered.

For questions about participating in this clinical study, contact:

Patient Recruitment and Public Liaison Office
Toll Free: 1-800-411-1222
TTY: 1-866-411-1010
Se habla español.

Office hours: 8 a.m. – 3:30 p.m. ET

Reference study 82-I-0183

Visit clinicaltrials.gov for more information (NCT00001184).

Last Updated October 28, 2011

Last Reviewed October 17, 2011