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Can five radiation doses replace weeks of treatment for endometrial cancer?

NCT ID NCT07779109

Disease control Sponsor: Instituto de Investigación Sanitaria Aragón 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 Results may not be published yet.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This status has not been confirmed recently, so it may be out of date.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 Aug 21, 2026 · Last updated Aug 26, 2026 · Updated 2 times

Summary

This trial is testing whether a shorter, more intense course of radiation therapy can be a safe and effective option for people with high-risk endometrial cancer after surgery. Instead of the usual weeks of daily radiation, the study uses just five sessions of a higher dose, guided by advanced imaging. The main goal is to see how well patients tolerate this approach, focusing on short-term side effects in the bladder and digestive system.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Ultra-hypofractionated radiation therapy (27.5 Gy in 5 fractions) delivered via image-guided IMRT/VMAT
What this could lead to
If successful, this could offer a more convenient and potentially less toxic radiation option for endometrial cancer patients after surgery.
What could go wrong
This is a phase II safety study with a small number of participants, so results may not be definitive. The higher dose per fraction could increase side effects, and long-term outcomes are not yet known.

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

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 50 people

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

Started

Mar 2026

Expected to finish

Mar 2035

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 110 years

Sex

Female participants only

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: 1. Aged \> 18 years. 2. Histologically confirmed diagnosis of endometrial cancer post hysterectomy: endometrial adenocarcinoma, serous or clear cell carcinoma, or carcinosarcoma or dedifferentiated carcinoma. 3. Patients candidates for adjuvant pelvic (Cht)EBRT treatment (+/- vaginal cuff brachytherapy), categorized by Intermediate-high risk and high risk primary endometrial cancer based on recent ESGO/ESTRO/ESMO Guidelines (2025). 4. Patient is willing and able to give informed consent to participate in this clinical trial. 5. Patient must be willing and able to complete the QLQ-C30 questionnaire with EN-24 companion as described in the study protocol 6. Possibility of fiducial marker placement on vaginal vault. 7. Dosimetric feasibility based on OAR constraint and targets objective Exclusion Criteria: 1. Prior pelvic or abdominal radiation therapy delivered. 2. Inflamatory bowel disease of other contraindication to pelvic radiotherapy. 3. Previous abdominal or pelvic complicated surgery.

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Conditions

The condition(s) this trial relates to.

endometrial cancer endometrial carcinoma endometrium neoplasm

As listed by the trial registrant

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

Endometrial cancer Endometrial cancer stage III High-risk endometrial cancer Radiation therapy SBRT

How to take part

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

  1. The places running it

    1 site. 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

  • Unidad Clínica Multihospitalaria de Oncología Radioterápica de Aragón (UCMORA)

    RECRUITING

    Zaragoza, Zaragoza, 50009, Spain

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