Clinical trial Recruiting at 4 sites Phase2; Phase3 Interventional Ages 18 to 80

Comparing two radiation treatment approaches for stage II rectal cancer

Official title: A Phase III Study Testing Two Dose Escalation Strategies to Increase the Population of Complete Responders After Radiation Therapy in the Context of Organ Preservation for Patients With Rectal Cancer

Run by Sir Mortimer B. Davis - Jewish General Hospital · NCT03051464 · Data updated 2026-11-12

This study is testing two different ways of giving radiation treatment to see which one helps older patients with stage II rectal cancer better avoid surgery and keep their rectum.

Quick facts

PhasePhase2; Phase3
Study typeInterventional
Ages18 Years to 80 Years
SexAll
Enrollment131 (estimated)
SponsorSir Mortimer B. Davis - Jewish General Hospital
Academic / other
Drugs / interventionschemotherapy, radiation
Locations4 sites (Dallas, Texas and 3 other locations)
StatusRecruiting
StartedApril 25, 2017
Main results expectedJanuary 2028
Study endsJanuary 2030
Registry record updatedJune 30, 2026
Trial IDNCT03051464 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates include adults over 18 with clinically staged T2-3 N0 rectal cancer who meet specific tumor size and location criteria.

Probably not a fit

Patients with advanced disease stages, distant metastasis, or those who have previously undergone pelvic radiation will 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 is a randomized clinical trial involving 131 patients with clinical T2-3 N0 rectal cancer. Participants will be assigned to one of two treatment arms: one receiving standard chemoradiation followed by an external beam radiation boost, and the other receiving the same chemoradiation followed by a brachytherapy boost. The aim is to optimize non-surgical treatment options and achieve complete clinical response, particularly important for older patients with multiple health issues. The study will evaluate the effectiveness of these two radiation dose escalation strategies in preserving the rectum.

Why it matters

Potential benefit: If successful, this study could provide a non-surgical treatment option that preserves the rectum for patients with stage II rectal cancer.

How similar studies have gone: Other studies have shown promise in optimizing non-surgical approaches for rectal cancer, making this a relevant and potentially impactful investigation.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Rectal cancer patients, clinically staged as T2-T3a,b N0-1 by MRI or endoscopic/trans-rectal ultrasound
* Rectal cancer staged as N0-1 by MRI or EUS/TRUS
* No metastatic lesion
* Rectal tumor occupying less than half of the circumference
* Tumor less than 5 cm on its largest dimension
* Tumor located at less than 10 cm from the anal verge
* Tumor penetration less than 5 mm in the mesorectal fat
* Tumor accessible for brachytherapy
* Lumen accessible for colonoscopy
* Patient should be a suitable candidate for brachytherapy and chemotherapy
* Older than 18 years of age
* Adequate birth control measures in women of childbearing potential
* Written informed consent

Exclusion Criteria:

* Patients with previous pelvic radiation
* Evidence of distant metastasis
* Extension of malignant disease to the anal canal
* Tumors staged as T4
* Tumors larger than 5 cm in length

Where it's running

  • UT Southwestern Medical Center
    Dallas, Texas, United States
    Recruiting
  • Le Centre Hospitalier de l'Université de Montreal
    Montreal, Quebec, Canada
    Recruiting
  • Jewish General Hospital
    Montreal, Quebec, Canada
    Recruiting
  • Centre hospitalier universitaire de Québec
    Québec, Quebec, Canada
    Recruiting

Study contacts

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

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.