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New radiation boost strategy aims to spare rectal cancer patients from surgery

NCT ID NCT03051464

Disease control Sponsor: Sir Mortimer B. Davis - Jewish General Hospital Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jul 01, 2026 · Updated 2 times

Summary

This study tests two ways of giving extra radiation after standard chemoradiation to people with early-stage rectal cancer. The goal is to see which method helps more people achieve a complete response, so they can avoid major surgery and keep their rectum. About 131 participants will be randomly assigned to receive either an external beam boost or a brachytherapy boost.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Phase 2/3

Runs two stages together: whether the treatment works, then large-scale confirmation.

Participants

About 131 people

The number the study aims to enrol. It can still change while the study runs.

Started

Apr 2017

Expected to finish

Jan 2030

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

18 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

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

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Conditions

The condition(s) this trial relates to.

rectal cancer rectal neoplasm

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Non-operative treatment Organ preservation Rectal cancer patients Rectal cancer stage III Stage II rectal cancer

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    4 sites in 2 countries. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Centre hospitalier universitaire de Québec

    RECRUITING

    Québec, Quebec, G2L2Z3, Canada

  • Jewish General Hospital

    RECRUITING

    Montreal, Quebec, H3T 1E2, Canada

  • Le Centre Hospitalier de l'Université de Montreal

    RECRUITING

    Montreal, Quebec, H2X0A9, Canada

  • UT Southwestern Medical Center

    RECRUITING

    Dallas, Texas, 75390, United States

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