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 type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 686 (estimated) |
| Sponsor | Centre hospitalier de l'Université de Montréal (CHUM) Academic / other |
| Locations | 1 site (Montreal, Quebec) |
| Status | Recruiting |
| Started | February 27, 2025 |
| Main results expected | July 2027 |
| Study ends | July 2027 |
| Registry record updated | September 8, 2026 |
| Trial ID | NCT06807073 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
Other studies for the same condition or treatment. Recruiting studies are listed first.
-
Reducing recurrence of large colorectal polyps after removal
This study is testing if a new method called hybrid argon plasma coagulation can help prevent large colorectal polyps from coming back after they've been removed, compared to the usual treatment.
-
Knife-assisted full-thickness resection for rectal lesions in a multicenter setting
A multicenter study tests knife-assisted full-thickness resection (kFTR) to remove rectal lesions in adults and see how well it works and how safe it is.
-
Personalized 3D Bioprinted Colorectal Cancer Microenvironment Model
This study tests patient-derived, 3D-bioprinted cancer models that include tumor, fibroblast, and immune cells to see if they can better predict how colorectal cancer will respond to treatment.
-
Integrated genomic and clinical database for cancer biomarker discovery
Researchers are building a combined genomic and clinical database at Samsung Medical Center to test biomarkers for cancer diagnosis, treatment choice, and predicting how well treatments work.
-
Prehabilitation with Resistance, Aerobic, or Both Before Colorectal Surgery
Four pre-surgery exercise options (resistance, aerobic, both, or none) will be tested to see which best reduces complications after colorectal cancer surgery.
-
Liver transplantation for colorectal cancer with liver metastases
This study follows adults with stage IV colorectal cancer whose disease is limited to the liver and who are getting a liver transplant as part of their cancer care to see how they fare over time.
How to take part
- Review the eligibility criteria above with your treating physician.
- Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
- Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.