Clinical trial Recruiting at 1 site Interventional Ages 18 and up

Comparing closure techniques after removing large colorectal polyps

Official title: Complete Closure After Endoscopic Mucosal Resection of Large Non-Pedunculated Colorectal Polyps: A Randomized Controlled Trial

Run by Centre hospitalier de l'Université de Montréal (CHUM) · NCT06807073 · Data updated 2026-11-12

This study tests if closing the site after removing large flat colorectal polyps can help prevent complications and reduce the chance of the polyps coming back.

Quick facts

Study typeInterventional
Ages18 Years and up
SexAll
Enrollment686 (estimated)
SponsorCentre hospitalier de l'Université de Montréal (CHUM)
Academic / other
Locations1 site (Montreal, Quebec)
StatusRecruiting
StartedFebruary 27, 2025
Main results expectedJuly 2027
Study endsJuly 2027
Registry record updatedSeptember 8, 2026
Trial IDNCT06807073 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are adults aged 18 and older who are scheduled for EMR of large colorectal laterally spreading lesions.

Probably not a fit

Patients with inflammatory bowel disease, non-elective colonoscopy needs, or those with significant health issues may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This clinical trial aims to evaluate the rates of adverse events and lesion recurrence following endoscopic mucosal resection (EMR) of large flat colorectal polyps, specifically laterally spreading lesions. Participants will be randomly assigned to either a control group, where no defect closure is performed, or an experimental group, where complete defect closure is applied after EMR. The study will monitor patients for adverse events and recurrence through follow-up assessments at 6 and 18 months post-procedure. The trial is designed to determine if defect closure can reduce complications associated with EMR.

Why it matters

Potential benefit: If successful, this study could lead to improved safety and outcomes for patients undergoing EMR for large colorectal polyps.

How similar studies have gone: While similar studies have explored EMR techniques, this specific approach to defect closure is novel and has not been extensively tested.

Who can join: the full rules

Show full inclusion / exclusion criteria
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);
* appendiceal orifice or terminal ileum invasion;
* pregnancy.

Where it's running

  • Centre Hospitalier de l'Université de Montréal
    Montreal, Quebec, Canada
    Recruiting

Similar studies

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How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.