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NCT07242820Not yet recruiting

Reducing Neoplasia Recurrence After Non-thermal Endoscopic Resection of Large Colorectal Polyps

Source: ClinicalTrials.gov · Last updated 14 Aug 2026

Brief summary (registry, in English)

The goal of this clinical trial is to clarify the role of adjuvant thermal ablation for non-thermal endoscopic mucosal resection (EMR) of large (≥20mm) flat colorectal polyps (so-called laterally spreading lesions \[LSLs\]). The hypothesis is that adding adjuvant thermal ablation to non-thermal EMR (vs no ablation) will result in lower lesion recurrence rates at 6-month follow-up, and non-inferior adverse events (AE) rates 14 days post EMR. For participants with planned EMR, endoscopists will perform non-thermal EMRs as per standard of care and: * adjuvant thermal ablation will either not be performed (control group), or will be applied to the base and outside margins of the resection site (experimental group); * then, all patients will be contacted 14-44 days after EMR, to verbally ascertain the occurrence of AEs; * then, all patients will undergo a first follow-up colonoscopy at 6 months after initial conoloscopy to assess lesion recurrence; * finally, all patients will undergo a second and final colonoscopy 18 months after EMR.

Status (registry)
Not yet recruiting
Study type
Interventional
Enrollment
752 (estimated)
First submitted
17 Nov 2025
Start date
Dec 2026
Primary completion date
May 2031
Lead sponsor
Centre hospitalier de l'Université de Montréal (CHUM)
NCT number
NCT07242820

What you commit to

  • Study type: Interventional
  • Planned participants: 752
  • From Dec 2026 to the primary completion date, May 2031
  • 1 site in 1 country
  • Visits and tests: ask the trial team, the registry does not list them

Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.

Who cannot take part

Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.

Other illness

  • Inflammatory bowel disease

Lab values

  • Coagulopathy or thrombocytopenia (international normalized ration ≥1.5 or platelets \<50\*10\^9/L)

Other

  • Non-elective colonoscopy
  • Poor general health (American Society of Anesthesiologists classification \>III)
  • Bulky lesions (granular mixed with ≥10mm module).

Who the study is looking for

  • Adult patients
  • Undergoing EMR for large (≥20 mm) colorectal LSL
  • Providing written and informed consent for study participation

Age in the registry: 18 years to - · Sex: All · Does not accept healthy volunteers

Full criteria on ClinicalTrials.gov

Sites (1)

Sites in registry order. Pick your city on the disease page to sort them by distance.

SiteCityCountrySite status
Centre Hospitalier de l'Université de Montréal
Coordinator of this site? Confirm its status
MontrealCanadaUnknown status

This page is information, not medical advice. Discuss any trial with your doctor.