NCT04567771 · Mayo Clinic
Comparison of Proton or Intensity Modulated Radiation Therapy After Surgery for Endometrial or Cervical Cancer
What this study is about
This early phase I trial compares the side effects between patients treated with proton radiation therapy versus intensity modulated radiation therapy after surgery for the treatment of endometrial or cervical cancer. Radiation therapy uses high energy protons or x-rays to kill tumor cells and shrink tumors.
View original scientific description
This early phase I trial compares the side effects between patients treated with proton radiation therapy versus intensity modulated radiation therapy after surgery for the treatment of endometrial or cervical cancer. Radiation therapy uses high energy protons or x-rays to kill tumor cells and shrink tumors. Using quality of life questionnaires and adverse event assessments may help doctors learn whether proton radiation therapy is associated with lower acute gastrointestinal toxicities at the end of treatment compared to intensity modulated radiation therapy in patients with endometrial or cervical cancer.
Interventions
OTHER
Quality-of-Life Assessment
Complete quality of life questionnaires
OTHER
Questionnaire Administration
Complete adverse event assessments
RADIATION
Radiation Therapy
Undergo proton or intensity modulated radiation therapy
Primary outcome measures
Change in Expanded Prostate Cancer Index Composite (EPIC) Bowel score
Time frame: Baseline up to 3 years post-radiation therapy (RT)
Will be examined using analysis of covariance.
Who can participate
This study lists these criteria on ClinicalTrials.gov. A study coordinator reviews eligibility during screening — this page does not determine whether you qualify.
Inclusion criteria
- Histologically confirmed diagnosis of cervical or endometrial cancer
- Must have undergone an open or robotic hysterectomy (total abdominal, vaginal, radical, or total laparoscopic) for carcinoma of the cervix or endometrium
- History and physical prior to registration
- Documentation of history of:
- Smoking status
- Pelvic infection
- Pelvic inflammatory disease
- Endometriosis
- Planned to receive either proton or IMRT radiation treatment, with use of rectal balloon, at any Mayo Clinic site
- Plan for RT to pelvis with or without para-aortic lymph node irradiation
- If received high-dose chemotherapy prior to registration, last dose must have been given \>= 21 days prior to start of RT
- Complete blood count (CBC) performed within 21 days prior to registration
- Computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET)/CT, or PET/MRI for staging before registration; may be pre-operative (op) or post-op
- Eastern Cooperative Oncology Group (ECOG) performance score 0-2
- Provide written informed consent
- Willing to complete quality of life (QOL) questionnaires
Exclusion criteria
- Receiving external beam boost dose during RT
- Distant metastases
- Gross disease at time of RT
- Histology of endometrial stromal sarcoma, leiomyosarcoma, melanoma or small cell carcinomas
- Patients who exceed the weight/size limits of the treatment table
- Positive or close surgical margins (=\< 3 mm)
- Prior RT to the pelvis
- Planned to receive inguinal node RT
- Hepatic insufficiency resulting in clinical jaundice and/or coagulation defects
- Acquired immune deficiency syndrome (AIDS) based upon current Centers for Disease Control and Prevention (CDC) definition; note that human immunodeficiency virus (HIV) testing is not required for entry into this protocol. The need to exclude patients with AIDS from this protocol is necessary because the treatments involved in this protocol may be immunosuppressive.
- Prior invasive malignancy (except non-melanomatous skin cancer) unless disease free for a minimum of 3 years
- Severe, active co-morbidity defined as follows:
- Unstable angina and/or congestive heart failure requiring hospitalization within the last 6 months
- Transmural myocardial infarction within the last 6 months
- Acute bacterial or fungal infection requiring intravenous antibiotics at the time of registration
- Other major medical illness which requires hospitalization or precludes study therapy at the time of registration
- Patients unwilling to have rectal balloon placed on a daily basis during RT
Where
- Scottsdale, Arizona
- Jacksonville, Florida
- Rochester, Minnesota
Related conditions & keywords
Frequently asked questions
What is a clinical trial?
A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.
Is it safe to participate?
Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.
Will I be compensated?
Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.
Will I receive a placebo instead of treatment?
When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.
Can I leave a trial if I change my mind?
Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.
How long does a clinical trial last?
Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.
Data: ClinicalTrials.gov · synced Aug 19, 2026 · Source of record for eligibility and locations