Immune Regulation in Ulcerative Colitis or Crohn’s Disease

Credit: NIAID

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.

Visit for more information (NCT00001184).

Contact Information

For questions about participating in this clinical study, contact:

Office of Patient Recruitment
Toll Free: 1-800-411-1222
Reference study 82-I-0183
TTY: 1-866-411-1010
Se habla español.
Office hours: 8 a.m. – 3:30 p.m. ET

Participating in Research

Watch a series of short informational videos about participating in clinical trials. These videos are intended to help potential participants understand how research works, what questions they should consider asking, and things to think about when deciding whether or not to participate in a study.

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