Ultrahypofractionation and Normal Tissue Toxicity

NCT ID: NCT05912231

Last Updated: 2025-11-13

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

ACTIVE_NOT_RECRUITING

Clinical Phase

NA

Total Enrollment

60 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-08-15

Study Completion Date

2026-12-31

Brief Summary

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This research is being done to see if proton beam radiation therapy (PBT) results in fewer changes to a participant's heart measured with MRI-imaging than conventional or "photon" radiation therapy (XRT) for participants with non-metastatic left sided breast cancer.

The names of the two study groups in this research study are:

* Proton Radiation Therapy (PBT)
* Conventional or "Photon" Radiation Therapy (XRT)

Detailed Description

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This is a randomized phase II trial comparing participants with stage II-III breast cancer treated with accelerated Proton Beam Radiation Therapy (PBT) versus accelerated conventional photon radiation therapy (XRT) inclusive of the regional lymph nodes.

Participants will be randomized into one of two study groups: proton beam radiation therapy versus photon radiation therapy. Randomization means that participants are put into a group by chance.

Study procedures includes screening for eligibility, study treatment visits, Cardiac Magnetic Resonance Imaging (MRI), blood tests, and questionnaires.

The National Cancer Institute, American Society of Clinical Oncology, and Claflin Grant are supporting this research by providing funding for the research study.

Conditions

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Breast Cancer Breast Cancer Female Breast Cancer Stage II Breast Cancer Stage III Myocardial Fibrosis

Keywords

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Radiation Therapy Photon Radiation Therapy XRT Proton Beam Radiation Therapy PBT Breast Cancer Breast Cancer Female Breast Cancer Stage II Breast Cancer Stage III Myocardial Fibrosis

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Accelerated Proton Beam Radiation Therapy (PBT) Group

Participants will be randomized 1:1 to XRT group and stratified by receipt of chemotherapy and cardiac risk factors and will complete:

* Cardiac MRI and blood tests within 1 month prior to start of radiation therapy.
* Radiation therapy 1x daily for 5 days over 1 week.
* End of radiation therapy visit with blood tests.
* 6 month follow up visit with cardiac MRI, blood tests, questionnaires, and photographic imaging.
* 12 month follow up visit with questionnaires and photographic imaging.

Group Type EXPERIMENTAL

Accelerated Proton Beam Radiation Therapy (PBT)

Intervention Type RADIATION

per protocol

Accelerated Photon Radiation Therapy (XRT) Group

Participants will be randomized 1:1 to XRT group and stratified by receipt of chemotherapy and cardiac risk factors and will complete:

* Cardiac MRI and blood tests within 1 month prior to start of radiation therapy.
* Radiation therapy 1x daily for 5 days over 1 week.
* End of radiation therapy visit with blood tests.
* 6 month follow up visit with cardiac MRI, blood tests, questionnaires, and photographic imaging.
* 12 month follow up visit with questionnaires and photographic imaging.

Group Type EXPERIMENTAL

Accelerated Photon Radiation Therapy (XRT)

Intervention Type RADIATION

per protocol

Interventions

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Accelerated Proton Beam Radiation Therapy (PBT)

per protocol

Intervention Type RADIATION

Accelerated Photon Radiation Therapy (XRT)

per protocol

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

* ≥18 years of age
* Non-metastatic Breast Cancer patients who are scheduled to receive conventional left-sided or bilateral breast/chest wall RT inclusive of treatment to the internal mammary lymph nodes (IMNs)
* Prior chemotherapy is permitted
* Ability to understand and the willingness to sign a written informed consent document
* No contraindication to MRI
* Patients with right-sided breast cancer or patients with left-sided patients not requiring treatment to the IMNs, but where cardiac anatomy is determined to be unfavorable by the study PI, will be considered eligible.

Exclusion Criteria

* Person who is pregnant or breastfeeding.
* Patients receiving any other investigational agent will not be excluded from study eligibility, unless the patient is already enrolled in an interventional study evaluating cardiac toxicity. No cytotoxic therapy or radiotherapy may be used during radiation therapy.
* Contra-indication to gadolinium contrast (e.g., chronic kidney disease)
* Contra-indication to radiotherapy (e.g., scleroderma, p53 mutation)
Minimum Eligible Age

18 Years

Eligible Sex

FEMALE

Accepts Healthy Volunteers

No

Sponsors

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National Cancer Institute (NCI)

NIH

Sponsor Role collaborator

American Society of Clinical Oncology

OTHER

Sponsor Role collaborator

Massachusetts General Hospital

OTHER

Sponsor Role lead

Responsible Party

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Rachel Beth Jimenez

Principal Investigator

Responsibility Role PRINCIPAL_INVESTIGATOR

Principal Investigators

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Rachel Jimenez, MD

Role: PRINCIPAL_INVESTIGATOR

Massachusetts General Hospital

Locations

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Massachusetts General Hospital Cancer Center

Boston, Massachusetts, United States

Site Status

Countries

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United States

Other Identifiers

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P01CA261669

Identifier Type: NIH

Identifier Source: secondary_id

View Link

23-182

Identifier Type: -

Identifier Source: org_study_id