Adaptive Daily MR-Guided Adjuvant Pelvic Therapy-Endometrial Cancer (ADAPT-EC)

June 9, 2026 updated by: Lara Hathout, MD, FRCPC, Rutgers, The State University of New Jersey

Adaptive Daily MR-Guided Adjuvant Pelvic Therapy-Endometrial Cancer: A Phase I/II Feasibility Study

To evaluate the safety, tolerability, and preliminary efficacy of moderately hypofractionated (15-fraction) MR-guided adaptive pelvic IMRT in patients with endometrial cancer.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Not yet recruiting

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Detailed Description

The purpose of this research study is to evaluate a new way of delivering radiation therapy for patients with endometrial cancer. This study will test a shorter course of radiation treatment using magnetic resonance (MR)-guided technology, which allows for more precise targeting of treatment areas. The goal is to determine whether this approach is safe, well-tolerated, and effective, while potentially reducing side effects and the overall time required for treatment. If you take part in the research, you will receive radiation therapy using MR-guided imaging. This involves daily radiation treatments that may be adjusted based on imaging taken at each session (called adaptive radiotherapy). This approach is considered investigational because it is not yet a standard treatment for endometrial cancer. Your time in the research will take Your participation in the study will involve approximately 15 treatment sessions over about 3 weeks. Each session may take longer than standard radiation treatments due to the imaging and treatment planning performed on the same day.The purpose of this research study is to evaluate a new method of delivering radiation therapy for patients with endometrial cancer. This study will test a shorter course of radiation treatment using magnetic resonance (MR)-guided technology, which allows for more precise targeting of the treatment areas. The goal is to determine whether this approach is safe, well-tolerated, and effective, while potentially reducing side effects and the overall time required for treatment.

If you participate in this research, you will receive radiation therapy guided by MR imaging. This will involve daily radiation treatments that may be adjusted based on imaging taken at each session (known as adaptive radiotherapy). This approach is considered investigational as it is not yet a standard treatment for endometrial cancer.

Your participation in the study will involve approximately 15 treatment sessions over about 3 weeks. Each session may take longer than standard radiation treatments because imaging and treatment planning are performed on the same day.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Interventional

Enrollment (Estimated)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
30

Phase

Phase

The stage of a clinical trial studying a drug or biological product, based on definitions developed by the U.S. Food and Drug Administration (FDA). The phase is based on the study's objective, the number of participants, and other characteristics. There are five phases: Early Phase 1 (formerly listed as Phase 0), Phase 1, Phase 2, Phase 3, and Phase 4. Not Applicable is used to describe trials without FDA-defined phases, including trials of devices or behavioral interventions.
  • Not Applicable

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Contact

Study Contact

The name and contact information for the person who can answer enrollment questions for a clinical study. Each location where the study is being conducted may also have a specific contact, who may be better able to answer those questions.

Study Locations

  • United States
    • New Jersey
      • New Brunswick, New Jersey, United States, 08901
        • Rutgers Cancer Institut Jersey
        • Contact:
          • Lara Hathout

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • Adult
  • Older Adult

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  1. Histologically confirmed endometrial carcinoma (endometrioid, serous, clear cell, carcinosarcoma, or dedifferentiated histology).
  2. Indication for adjuvant pelvic radiotherapy (± vaginal brachytherapy) for HIR defined by the ASTRO guidelines and GOG-99(7, 9) :
  3. Age
  4. High-grade histology (grade 2-3)
  5. Depth of myometrial invasion
  6. LVSI
  7. Positive pelvic nodes
  8. Cervical stromal invasion
  9. Presence of poor prognostic molecular markers
  10. Age ≥18 years.
  11. Ability to provide informed consent.
  12. Eligible to receive adjuvant systemic therapy, if indicated, with a minimum 3-week interval between chemotherapy and radiotherapy.
  13. Willing and able to complete EORTC QLQ-C30 and EN-24 questionnaires in a validated language version.

Exclusion Criteria:

  1. Prior pelvic radiotherapy.
  2. Contraindication to pelvic radiotherapy (e.g., active connective tissue disorder or inflammatory bowel disease).

  3. Presence of a hip prosthesis that would compromise treatment planning or delivery.

    -

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Primary Purpose: Treatment
  • Allocation: N/A
  • Interventional Model: Single Group Assignment
  • Masking: None (Open Label)

Arms and Interventions

Participant Group / Arm

Participant Group / Arm

A group or subgroup of participants in a clinical trial that receives a specific intervention/treatment, or no intervention, according to the trial's protocol.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Experimental: Experimental: MR-guided Adaptive Pelvic IMRT
Participants receive moderately hypofractionated MR-guided adaptive pelvic intensity-modulated radiation therapy (IMRT) delivered via MR-linac to a total dose of 42 Gy in 15 fractions with daily onboard MRI and online adaptive replanning as needed to optimize target coverage and minimize radiation exposure to surrounding organs at risk. Vaginal brachytherapy may be administered following IMRT at the treating physician's discretion per institutional standards.
Radiation: MR-guided adaptive pelvic intensity-modulated radiation therapy (IMRT)
Participants receive moderately hypofractionated MR-guided adaptive pelvic intensity-modulated radiation therapy (IMRT) delivered via MR-linac to a total dose of 42 Gy in 15 fractions with daily onboard MRI guidance and online adaptive replanning as needed to optimize target coverage and minimize radiation exposure to surrounding organs at risk.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Incidence of Acute Grade ≥2 Gastrointestinal and Genitourinary Toxicity
Time Frame: Within 90 days after completion of treatment
Defined as the number and proportion of participants experiencing grade ≥2 acute gastrointestinal or genitourinary treatment-related adverse events occurring within 90 days after completion of MR-guided adaptive pelvic IMRT, as assessed using the Common Terminology Criteria for Adverse Events (CTCAE) version 6.0, a standardized grading system for adverse events ranging from Grade 1 (mild) to Grade 5 (death related to adverse event)
Within 90 days after completion of treatment

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Patient-Reported Quality of Life
Time Frame: Baseline, end of treatment, 3 months, 6 months, 12 months, then every 6-12 months up to 2 years
Assessed using the EORTC QLQ-C30 to evaluate quality of life and symptom burden over time.
Baseline, end of treatment, 3 months, 6 months, 12 months, then every 6-12 months up to 2 years
Patient Reported Quality of Life
Time Frame: Time Frame: Baseline, end of treatment, 3 months, 6 months, 12 months, then every 6-12 months up to 2 years
Description: Assessed using the EN-24 questionnaire to evaluate quality of life and symptom burden over time.
Time Frame: Baseline, end of treatment, 3 months, 6 months, 12 months, then every 6-12 months up to 2 years
Disease-Free Survival
Time Frame: Up to 2 years after completion of treatment.
Disease-free survival will be measured as the time from completion of MR-guided adaptive pelvic IMRT to the first documented recurrence or death from any cause, whichever occurs first. Recurrence will be assessed by clinical evaluation and/or imaging according to institutional standards. Participants without recurrence or death will be censored at the date of last disease assessment.
Up to 2 years after completion of treatment.

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Rutgers, The State University of New Jersey

Investigators

Investigators

A researcher involved in a clinical study. Related terms include site principal investigator, site sub-investigator, study chair, study director, and study principal investigator.
  • Principal Investigator: Lara M Hathout, Rutgers University - Cancer Institute

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Estimated)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
June 1, 2026

Primary Completion (Estimated)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
June 1, 2029

Study Completion (Estimated)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
June 1, 2029

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
May 27, 2026

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2026

First Posted (Actual)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
June 11, 2026

Study Record Updates

Last Update Posted (Actual)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
June 11, 2026

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
June 9, 2026

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
May 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • 152601

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

Yes

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

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