High dose radiotherapy boost for gynecological cancers when brachytherapy isn't possible

MRLinac Boost for Gynecological Cancers if Brachytherapy is Not Feasible

Observational UMC Utrecht · NCT05937958

This study tests if a high dose of a special type of radiation treatment can help control tumors in women with gynecological cancers who can't have brachytherapy, while also looking at any side effects they might experience.

Quick facts

Study typeObservational
Enrollment30 (estimated)
Ages18 Years and up
SexFemale
SponsorUMC Utrecht Academic / other
Drugs / interventionsradiation, chemotherapy
Locations2 sites (Odense and 1 other locations)
Trial IDNCT05937958 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the effectiveness and side effects of a high dose daily adapted stereotactic body radiotherapy (SBRT) boost using MRLinac in patients with gynecological cancers who cannot receive brachytherapy. The study will assess how many patients achieve local control of their tumors and the side effects associated with this treatment. Participants will complete questionnaires regarding their experiences, and their clinical data may be utilized for research purposes. The MRLinac technology allows for better visualization and adaptation of treatment plans based on individual patient anatomy and tumor changes.

Who should consider this trial

Good fit: Ideal candidates include patients with advanced stage gynecological cancers (excluding ovarian and endometrial cancers) who are planned for definitive (chemo)radiotherapy.

Not a fit: Patients with hard contraindications for MRI scanning will not benefit from this study.

Why it matters

Potential benefit: If successful, this approach could provide a safer and more effective treatment option for patients with gynecological cancers who are ineligible for brachytherapy.

How similar studies have performed: While the use of MRLinac for this purpose is relatively novel, similar approaches in radiotherapy have shown promise in improving treatment outcomes.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with newly biopsy proven advanced stage gynecological cancers (excluding ovarian cancers) and endometrium in whom definitive (chemo)radiotherapy with curative intent is planned are qualified for the study, as well as, patients with recurrent gynecological cancers (excluding ovarian cancers) for which no prior (chemo)radiation was performed for which (chemo)radiotherapy with curative intent is planned.
* Patients with para-aortic metastatic nodes (stage IVB) to the level of L2 are also eligible but patients with further dissemination are not.
* Staging according to FIGO (2018, https://doi.org/10.1002/ijgo.12611) and TNM (version 9, 2021, https://doi.org/10.3322/caac.21663) staging.
* Patients who gave informed consent to take part in the MOMENTUM study (NCT04075305) to use their clinical data for publication and share their data with other (European) sites.

Exclusion Criteria:

* Hard contra-indication for MRI scanning

Where this trial is running

Odense and 1 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Cervical CancerGynecologic CancerRadiotherapyMRLinacLocal controlToxicity
Last reviewed 2026-06-13 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.