Intensity-Modulated Proton Beam Therapy or Intensity-Modulated Photon Therapy in Treating Patients With Stage III-IVB Oropharyngeal Cancer

August 20, 2026 updated by: M.D. Anderson Cancer Center

Phase III Randomized Trial of Intensity-Modulated Proton Beam Therapy (IMPT) Versus Intensity-Modulated Photon Therapy (IMRT) for the Treatment of Oropharyngeal Cancer of the Head and Neck

This randomized phase III trial studies the side effects and how well intensity-modulated proton beam therapy works and compares it to intensity-modulated photon therapy in treating patients with stage III-IVB oropharyngeal cancer. Radiation therapy uses high-energy x-rays, protons, and other types of radiation to kill tumor cells and shrink tumors. It is not yet known whether intensity-modulated proton beam therapy is more effective than intensity-modulated photon therapy in treating oropharyngeal cancer.

Study Overview

Status

Active, not recruiting

Conditions

Intervention / Treatment

Detailed Description

PRIMARY OBJECTIVES:

To compare the progression-free survival (PFS) between concurrent chemo-radiation strategies with IMRT and IMPT following the treatment of oropharyngeal tumors.

SECONDARY OBJECTIVES:

  1. To assess and compare overall survival between IMRT and IMPT along with estimating disease-related outcomes such as: [2-year progression-free survival, patterns of failure, 2-year overall survival, 2-year distant metastasis free survival, and second primary cancers]
  2. To assess acute and chronic/late side effects, and to compare the rates of Grade 3-5 toxicity between IMRT and IMPT following the treatment of oropharyngeal tumors.
  3. To assess Patient Reported Outcome (PRO) measures of symptoms using MD Anderson Symptom Inventory (MDASI), MD Anderson Dysphagia Inventory (MDADI), FACT-HN, Xerostomia and Health Questionnaire (EQ-5D-3L), Work status (WPAI: SHP)
  4. To assess Physician Reported Toxicity using Common Terminology Criteria for Adverse Events (CTCAE)-4.0
  5. To evaluate and compare Quality-Adjusted-Life-Years (QALY) between IMPT and IMRT;
  6. To perform Cost-benefit economic analysis of treatment;
  7. To determine whether specific molecular profiles are associated with overall or progression-free survival;
  8. To investigate associations between changes in blood biomarkers, or HPV-specific cellular immune responses, or HPV ctDNA (measured at baseline and three months and at each follow-up visit for up to 10 years) with overall or progression-free survival;
  9. To bank peripheral blood at time of enrollment, weeks 2, 4, and 6 during treatment and at each follow up visits for up to 10 years to explore the ability of circulating markers to predict outcome;
  10. To bank head and neck tissues to explore the ability of tissue-based markers to predict outcome;
  11. To bank peripheral blood and tissues for future interrogations; Finally, all additional secondary endpoints

EXPLORATORY OBJECTIVE:

I. To assess potential differences between patients on study and patients who were considered eligible for randomized, were randomized to a treatment arm, but were denied insurance coverage for the treatment arm she/he was randomized to; or may have dropped out of the study for other reasons after being randomized. These patients will compromise Group 3: consisting of patients randomized to Protons but not treated and Group 4: consisting of patients randomized to IMRT but not treated at the designated institution. Furthermore, these patients will only be followed for recurrence and survival.(Phase III)

OUTLINE: Patients are randomized to 1 of 2 treatment arms.

ARM I: Patients undergo IMRT once daily (QD) five days a week for approximately 6.5 weeks.

ARM II: Patients undergo IMPT QD five days a week for approximately 6.5 weeks.

After completion of study treatment, patients are followed up every 3 months for 1 year, every 4 months for 1 year, and then every 6 months for 5 years.

Study Type

Interventional

Enrollment (Actual)

440

Phase

  • Phase 3

Contacts and Locations

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

Study Locations

  • United States
    • Alabama
      • Birmingham, Alabama, United States, 35249
        • University of Alabama at Birmingham
    • Arizona
      • Scottsdale, Arizona, United States, 85259
        • Mayo Clinic in Arizona
    • Florida
      • Gainesville, Florida, United States, 32610
        • University of Florida Health Science Center - Gainesville
      • Miami, Florida, United States, 33176
        • Miami Cancer Institute
    • Georgia
      • Atlanta, Georgia, United States, 30322
        • Emory University Hospital/Winship Cancer Institute
    • Illinois
      • Warrenville, Illinois, United States, 60555
        • Northwestern Medicine Cancer Center Warrenville
    • Louisiana
      • Shreveport, Louisiana, United States, 71103
        • Willis-Knighton Medical and Cancer Center
    • Maryland
      • Baltimore, Maryland, United States, 21201
        • University of Maryland/Greenebaum Cancer Center
    • Massachusetts
      • Boston, Massachusetts, United States, 02114
        • Massachusetts General Hospital Cancer Center
    • Michigan
      • Detroit, Michigan, United States, 48201
        • Wayne State University/Karmanos Cancer Institute
    • Minnesota
      • Rochester, Minnesota, United States, 55905
        • Mayo Clinic in Rochester
    • New York
      • New York, New York, United States, 10065
        • Memorial Sloan Kettering Cancer Center
      • New York, New York, United States, 10035
        • New York Proton Center
    • Oklahoma
      • Oklahoma City, Oklahoma, United States, 73104
        • University of Oklahoma Health Sciences Center
    • Pennsylvania
      • Philadelphia, Pennsylvania, United States, 19104
        • University of Pennsylvania/Abramson Cancer Center
    • Texas
      • Conroe, Texas, United States, 77384
        • MD Anderson in The Woodlands
      • Houston, Texas, United States, 77030
        • M D Anderson Cancer Center
      • Houston, Texas, United States, 77079
        • MD Anderson West Houston
      • League City, Texas, United States, 77573
        • MD Anderson League City
      • Sugar Land, Texas, United States, 77478
        • MD Anderson in Sugar Land
    • Virginia
      • Fairfax, Virginia, United States, 22031
        • Inova Schar Cancer Institute
    • Washington
      • Seattle, Washington, United States, 98109
        • Fred Hutch/University of Washington Cancer Consortium

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

Ages Eligible for Study

18 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Description

Inclusion Criteria:

  • Histologically documented squamous cell carcinoma of the oropharynx (American Joint Committee on Cancer [AJCC] version [v]7 stage III-IV A,B)
  • Tumor tissue (primary or cervical metastasis) available for human papilloma virus (HPV) and/or p16 (in situ hybridization [ISH], immunohistochemistry [IHC] or genotyping testing); if you do not have enough leftover tumor tissue available, you will have a tumor biopsy for tumor marker testing
  • Eastern Cooperative Oncology Group (ECOG) performance status = 0, 1, or 2
  • Negative pregnancy test for women of child bearing potential
  • Concurrent chemotherapy
  • Bilateral neck radiation

Exclusion Criteria:

  • Previous radiation treatment for head and neck mucosal primary cancers within the past 5 years (i.e. oropharynx, nasopharynx, hypopharynx, larynx, and oral cavity)
  • Pregnant or breast-feeding females

  • Clinically significant uncontrolled major cardiac, respiratory, renal, hepatic, gastrointestinal or hematologic disease but not limited to:

    • Symptomatic congestive heart failure, unstable angina, or cardiac dysrhythmia not controlled by pacer device
    • Myocardial infarction within 3 months of registration
  • Distant metastases (stage IV C, any T, any N and M1)
  • Previous surgical resection or neck dissection for oropharyngeal cancer, administered with therapeutic intent

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: Randomized
  • Interventional Model: Parallel Assignment
  • Masking: Single

Arms and Interventions

Participant Group / Arm
Intervention / Treatment
Experimental: Arm I (IMRT)
Patients undergo IMRT QD five days a week for approximately 6.5 weeks.
Other: Laboratory Biomarker Analysis
Correlative studies
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Radiation: Intensity-Modulated Radiation Therapy
Undergo IMRT
Other Names:
  • IMRT
  • Intensity Modulated RT
  • Intensity-Modulated Radiotherapy
  • Radiation, Intensity-Modulated Radiotherapy
Radiation: Intensity-Modulated Radiation Therapy
Undergo IMPT
Other Names:
  • IMRT
  • Intensity Modulated RT
  • Intensity-Modulated Radiotherapy
  • Radiation, Intensity-Modulated Radiotherapy
Radiation: Photon Beam Radiation Therapy
Undergo IMRT
Other Names:
  • Photon EBRT
  • Photon External Beam Radiotherapy
  • Radiation, Photon Beam
Experimental: Arm II (IMPT)
Patients undergo IMPT QD five days a week for approximately 6.5 weeks.
Other: Laboratory Biomarker Analysis
Correlative studies
Other: Quality-of-Life Assessment
Ancillary studies
Other Names:
  • Quality of Life Assessment
Radiation: Intensity-Modulated Radiation Therapy
Undergo IMRT
Other Names:
  • IMRT
  • Intensity Modulated RT
  • Intensity-Modulated Radiotherapy
  • Radiation, Intensity-Modulated Radiotherapy
Radiation: Intensity-Modulated Radiation Therapy
Undergo IMPT
Other Names:
  • IMRT
  • Intensity Modulated RT
  • Intensity-Modulated Radiotherapy
  • Radiation, Intensity-Modulated Radiotherapy
Radiation: Proton Beam Radiation Therapy
Undergo IMPT
Other Names:
  • Proton Radiation Therapy
  • PBRT
  • Proton
  • Proton EBRT
  • Proton External Beam Radiotherapy
  • Radiation, Proton Beam

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Cumulative incidence of late onset grade 3+ toxicity anytime (Phase II)
Time Frame: Up to 2 years
Will be graded according to the National Cancer Institute (NCI) Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. The methods described by Gooley will be used to estimate the cumulative incidence of late onset grade 3+ toxicity by 2 years for each treatment arm with death as a competing risk. The methods of Fine and Gray will be used to model the cumulative incidence of late onset grade 3+ toxicity by 2 years as a function of treatment arm and other potential prognostic factors (e.g., human papillomavirus (HPV)/p16 status, use of induction chemotherapy) considering death as a competing risk. Hazard ratios for the prognostic factors from this model with 95% confidence intervals will be estimated.
Up to 2 years
Cumulative incidence of acute grade 3+ toxicity (Phase II)
Time Frame: Up to 2 years
Will be graded according to the NCI CTCAE version 4.0. The methods described by Gooley will be used to estimate the cumulative incidence of late onset grade 3+ toxicity by 2 years for each treatment arm with death as a competing risk. The methods of Fine and Gray will be used to model the cumulative incidence of late onset grade 3+ toxicity by 2 years as a function of treatment arm and other potential prognostic factors (e.g., HPV/p16 status, use of induction chemotherapy) considering death as a competing risk. Hazard ratios for the prognostic factors from this model with 95% confidence intervals will be estimated.
Up to 2 years
Overall survival (OS) (Phase II)
Time Frame: Up to 5 years
Stratified by treatment arm and estimated using the product limit estimator of Kaplan and Meier. Cox proportional hazards regression will be used to model OS as a function of potential prognostic factors. Hazard ratios for the prognostic factors from this model will be estimated with 95% confidence intervals.
Up to 5 years
Overall survival (Phase III)
Time Frame: Up to 5 years
Will be summarized at critical time points using the method of Kaplan-Meier. Kaplan-Meier plots will be used to visualize the time-to-event information by treatment arm, and the trial will be monitored based on results from log-rank tests used to compare treatment arms. Furthermore, Cox proportional hazards regression will be used to assess the time-to-event outcomes while adjusting for covariates of interest.
Up to 5 years
Progression-free survival (Phase III)
Time Frame: Up to 3 years
Will be summarized at critical time points using the method of Kaplan-Meier. Kaplan-Meier plots will be used to visualize the time-to-event information by treatment arm, and the trial will be monitored based on results from log-rank tests used to compare treatment arms. Furthermore, Cox proportional hazards regression will be used to assess the time-to-event outcomes while adjusting for covariates of interest.
Up to 3 years

Secondary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Quality of life (QoL) (Phase II and III)
Time Frame: Up to 5 years
QoL assessments will be summarized using the mean score and standard deviation for each time point of interest. Mean response trajectories will be plotted over the time horizon for each QoL instrument administered to patients in order to explore differences between treatment arms along with other patient characteristics of interest. Other analyses such as area under the curve and linear mixed models will be used to make statistical comparisons between treatment arms while adjusting for covariates of interest.
Up to 5 years

Collaborators and Investigators

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

Sponsor

M.D. Anderson Cancer Center

Collaborators

National Cancer Institute (NCI)
National Institute of Dental and Craniofacial Research (NIDCR)

Investigators

  • Principal Investigator: Steven J Frank, M.D. Anderson Cancer Center

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Helpful Links

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 (Actual)

August 26, 2013

Primary Completion (Estimated)

December 31, 2031

Study Completion (Estimated)

December 31, 2031

Study Registration Dates

First Submitted

July 2, 2013

First Submitted That Met QC Criteria

July 2, 2013

First Posted (Estimated)

July 9, 2013

Study Record Updates

Last Update Posted (Actual)

August 21, 2026

Last Update Submitted That Met QC Criteria

August 20, 2026

Last Verified

August 1, 2026

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

  • 2012-0825 (Other Identifier: M D Anderson Cancer Center)
  • U19CA021239 (U.S. NIH Grant/Contract)
  • NCI-2013-01879 (Registry Identifier: CTRP (Clinical Trial Reporting Program))
  • R03CA188162 (U.S. NIH Grant/Contract)
  • R56DE025248 (U.S. NIH Grant/Contract)

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

Yes

Studies a U.S. FDA-regulated device product

No

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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