A Study of Proton Versus Photon Beam Radiotherapy in the Treatment of Unilateral Head and Neck Cancer


About this study

Compared to IMRT, PBRT is thought to give less radiation exposure to the surrounding healthy tissues. It is possible that side effect rates with PBRT will be lower or the same compared to IMRT, but this has not been well studied to date. Although both of these radiation therapies have been used in the past to treat head and neck cancer, this research study will compare the effects of these two different radiation treatment modalities with each other to see whether PBRT is better, the same or worse than IMRT.

Participation eligibility

Participant eligibility includes age, gender, type and stage of disease, and previous treatments or health concerns. Guidelines differ from study to study, and identify who can or cannot participate. There is no guarantee that every individual who qualifies and wants to participate in a trial will be enrolled. Contact the study team to discuss study eligibility and potential participation.

Inclusion Criteria:

- Age greater than or equal to 18.

- Histopathologically confirmed diagnosis of one the following cancer types:

- Salivary gland cancer

- Skin cancer

- Melanoma

- HNSCC that require ipsilateral radiation

- Patients must be a candidate for ipsilateral radiation therapy.

- Karnofsky performance status ≥70.

- Negative pregnancy test for women of childbearing potential (<51 years of age) as per
institutional policy.

Exclusion Criteria:

- Any prior head or neck irradiation.

- Physician recommendation of bilateral neck radiation.

- Non-resectable disease

- Physician recommendation of mucosal radiation

Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Eligibility last updated 9/19/22. Questions regarding updates should be directed to the study team contact.

Participating Mayo Clinic locations

Study statuses change often. Please contact the study team for the most up-to-date information regarding possible participation.

Mayo Clinic Location Status Contact

Rochester, Minn.

Mayo Clinic principal investigator

Scott Lester, M.D.

Open for enrollment

Contact information:

Charlene Blanchard CCRP

(507) 293-0609


More information


Publications are currently not available

Additional contact information

Cancer-related trials contact form

Phone: 855-776-0015 (toll-free)

International patient clinical studies questions