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Hidden danger: routine MRI spots silent fistulas in Crohn's patients

NCT ID NCT07555808

Knowledge-focused Sponsor: Sixth Affiliated Hospital, Sun Yat-sen 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
Running, but no longer taking on new participants.
Completed This study
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed observational study looked at 669 Crohn's disease patients to see if finding hidden anal fistulas early with MRI leads to better long-term health. Researchers compared patients who had no symptoms but were found to have fistulas on MRI to those who had symptoms. The goal was to understand if early detection helps prevent complications and improve outcomes.

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 could show that routine MRI screening for hidden fistulas helps doctors start treatment earlier and improve outcomes for Crohn's patients.
What could go wrong
This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to all Crohn's 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

669 people

The number who actually took part.

Started

Jan 2010

Finished

Jan 2026

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

the CD patients diagnosed between January 1, 2010, and December 31, 2019, enrolled from the prospective CD database in our IBD center, who also had perianal fistula confirmed by pelvic MRI within 3 months before or after initial CD diagnosis. Those with incomplete records or less than 5 years of follow-up were excluded. Patients were classified into the APF group or the symptomatic perianal fistulizing Crohn's disease (PFCD) group (control) based on the presence of pre-diagnosis perianal symptoms (including perianal complaints and previous perianal surgery).

Ages

Children (under 18), adults (18 to 64) and older adults (65 and over)

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

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: * CD patients diagnosed between January 1, 2010, and December 31, 2019; * had perianal fistula confirmed by pelvic MRI within 3 months before or after initial CD diagnosis; * prospective follow-up in our IBD center; Exclusion Criteria: * with incomplete records; * less than 5 years of follow-up;

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Conditions

The condition(s) this trial relates to.

anal fistula Crohn disease

As listed by the trial registrant

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

Crohn's disease

More trials for these conditions

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