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Massive study seeks to unlock the secrets of Crohn's and colitis

NCT ID NCT01169207

Knowledge-focused Sponsor: Johns Hopkins University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing This study
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This long-running study at Johns Hopkins aims to identify the genetic and environmental factors that cause inflammatory bowel disease (IBD), including Crohn's disease and ulcerative colitis. Researchers are enrolling 2,500 participants — including patients, their family members, and healthy volunteers — to compare DNA and lifestyle data. The goal is to better understand why IBD develops, especially in families, which could lead to improved prevention or treatment in the future.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

What this could lead to
If successful, this research could uncover genetic and environmental triggers for IBD, pointing toward better prevention or treatment strategies.
What could go wrong
This is an observational study, not a treatment trial. It may take years to yield actionable results, and findings may not apply to all patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 2,500 people

The number the study aims to enrol. It can still change while the study runs.

Start date

Jul 1996

Expected to finish

Dec 2027

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

IBD patients are primarily recruited at the Johns Hopkins inpatient and outpatient units. However, individuals may contact by phone, mail or email after hearing about the study.

Ages

5 years and older

Sex

Anyone

Healthy volunteers

Accepted

You do not need to have the condition being studied to take part.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: ADULTS: * Patients with IBD and family members who have or do not have IBD. * People that do not have IBD nor have a family member with IBD needed for comparison purposes. CHILDREN: * Children age 5 or older with IBD and family members who have or do not have IBD. * Children that do not have IBD nor have a family member with IBD needed for comparison purposes. Exclusion Criteria: * The only exclusions are age parameters and health reasons that would preclude enrollment; such as, for anemic patients. Blood-draws on anemic patients may, in certain medical cases, pose a health risk; therefore, the investigators request that if the participants are anemic that the participants present a letter from the participant's personal physician giving explicit permission for the participant to join if at the time it is clinically advisable.

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Conditions

The condition(s) this trial relates to.

Crohn disease inflammatory bowel disease ulcerative colitis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Inflammatory bowel disease

Contacts and locations

Locations

  • Johns Hopkins University

    Baltimore, Maryland, 21231, United States

More trials for these conditions

Other studies related to the condition(s) this trial covers.