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Burning the edges: a new way to stop colon polyps from coming back

NCT ID NCT06271941

Prevention Sponsor: Centre hospitalier de l'Université de Montréal (CHUM) Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
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
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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Sep 18, 2026 · Last updated Sep 18, 2026

Summary

Large colorectal polyps can turn into cancer, so doctors remove them during a colonoscopy. Even after removal, polyps often grow back. This trial compares two methods for sealing the area where the polyp was removed: one uses a water jet to lift tissue and then burns it with argon gas (h-APC), and the other uses heat applied with a snare tip (STSC). Researchers will check whether h-APC leads to fewer polyps growing back at follow-up colonoscopies in adults who have these large polyps removed.

What this could mean

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

Active substance
hybrid argon plasma coagulation (h-APC), a technique that uses a high-pressure water jet to lift tissue and then burns away abnormal cells at the edge and base of the polyp removal site
What this could lead to
If h-APC works better than the standard method, doctors could use it to lower the chance that large colon polyps grow back, reducing repeat procedures and possibly preventing some colorectal cancers.
What could go wrong
This is a comparison of two techniques, not a new drug, and the difference in recurrence may turn out to be small. The procedure carries small risks of bleeding or perforation, and results may not apply to all patients or polyp types.

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.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 892 people

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

Started

Jul 2024

Expected to finish

Apr 2028

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.

Ages

18 years and older

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: * adult ≥18 years old * patients undergoing EMR for a large (≥20mm) colorectal LSL * patients providing written and informed consent for study participation. Exclusion Criteria: * inflammatory bowel disease; * non-elective colonoscopy; * poor general health (American Society of Anesthesiologists classification \>III); * coagulopathy or thrombocytopenia (international normalized ratio ≥1.5 or platelets \<50 x 109/L); * pedunculated polyps (Paris class Ip, Isp); * overt signs of deep submucosal invasive cancer (JNET 3); * biopsy proven invasive carcinoma in a potential study polyp. * Pregnant women

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Conditions

The condition(s) this trial relates to.

colorectal neoplasm polyp of colon colorectal cancer prevention target

As listed by the trial registrant

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

Colorectal cancer Polyp of colon

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Centre Hospitalier de l'Université de Montréal

    RECRUITING

    Montreal, Quebec, Canada

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