Non-surgical treatment for low rectal cancer after chemotherapy and radiation
Official title: Phase II Study to Assess the Safety of Non-operative Management for Low Rectal Cancer
Run by Mount Sinai Hospital, Canada · NCT03179540 · Data updated 2026-11-12
This study is testing if patients with low rectal cancer who respond well to chemotherapy and radiation can safely avoid surgery by being closely monitored instead.
Quick facts
| Study type | Interventional |
|---|---|
| Ages | 18 Years and up |
| Sex | All |
| Enrollment | 90 (estimated) |
| Sponsor | Mount Sinai Hospital, Canada Academic / other |
| Drugs / interventions | chemotherapy |
| Locations | 1 site (Toronto, Ontario) |
| Status | Recruiting |
| Started | March 16, 2018 |
| Main results expected | December 2026 |
| Study ends | December 2028 |
| Registry record updated | June 23, 2026 |
| Trial ID | NCT03179540 on ClinicalTrials.gov |
Is this trial a fit for you?
✓Likely a good fit
Ideal candidates are adults aged 18 and older with low rectal cancer who have completed chemoradiotherapy and achieved a complete clinical response.
✕Probably not a fit
Patients with metastatic disease, inflammatory bowel disease, or those unfit for surgery 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 study evaluates the safety of non-operative management (NOM) for patients with low rectal cancer who achieve a complete clinical response after chemoradiotherapy. It aims to determine if NOM can effectively replace surgery by monitoring local re-growth rates and the presence of positive resection margins when surgery is necessary. The study will involve active surveillance of patients instead of immediate surgical intervention, potentially reducing the long-term complications associated with surgery. Conducted across multiple centers in Canada, this Phase II trial seeks to provide more robust evidence for the NOM approach.
Why it matters
Potential benefit: If successful, this approach could significantly reduce the need for surgery and its associated complications for patients with low rectal cancer.
How similar studies have gone: While there have been a few single institution studies showing favorable results with non-operative management, this approach has not yet been widely adopted, making this study a significant step in evaluating its safety.
Who can join: the full rules
Show full inclusion / exclusion criteria
Inclusion Criteria: * Completed chemoradiotherapy (CRT) as standard of care \[Stage II and Stage III (T3-T4N0, AnyTN1-2)\]; \[50 Gy (2 Gy x 25 fractions) with 5-FU or capecitabine\] * Planned or probable APR * ALL criteria for complete clinical response are met between 8 and 10 weeks following completion of CRT * 18 years or older * Provides written consent Exclusion Criteria: * Unable to undergo MRI * Metastatic disease (including extramesorectal and retroperitoneal lymph nodes) * Pregnancy * Inflammatory bowel disease * More than one primary colorectal cancer * Other malignancy within 5 years of treatment for current rectal cancer * Unfit for surgery
Where it's running
-
Sinai Health System
Toronto, Ontario, Canada Recruiting
Study contacts
- Principal investigator: Erin Kennedy — Sinai Health System
- Study coordinator: Erin Kennedy
- Email: erin.kennedy@sinaihealthsystem.ca
- Phone: 416-586-4800
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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.