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ClinicalTrials.gov public records Last synced Oct 20, 2026, 5:36 AM EDT

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Showing 1–24 of 162 matching trials from the live ClinicalTrials.gov search.
Filters: Intervention: Proton Beam Clear all
Recruiting Phase 2 Interventional

Adaptive De-intensified Radiotherapy Using Circulating Tumor DNA in HPV- Associated Oropharyngeal Cancer

NCT06323460
View directory record Official record
Conditions
Clinical Stage I HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8, Clinical Stage II HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8, Oropharyngeal Squamous Cell Carcinoma
Interventions
Biospecimen Collection, Carboplatin, Cisplatin, Computed Tomography, External Beam Radiation Therapy, Paclitaxel, Positron Emission Tomography, Questionnaire Administration
Procedure · Drug · Radiation + 1 more
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 24, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

A Study of Mucosal Sparing Proton Beam Therapy (PBT) in Resected Oropharyngeal Tumors

NCT02736786
View directory record Official record
Conditions
Oropharyngeal Tumor
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2021
U.S. locations
2
States / cities
Phoenix, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 24, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Not applicable Interventional Results available

Proton Therapy for Hodgkin Lymphoma

NCT00850200
View directory record Official record
Conditions
Hodgkin Lymphoma
Interventions
Proton Radiation Plan, Conventional Photon Radiation Plan, Intensity Modulated Radiation Plan
Radiation
Lead sponsor
University of Florida
Other
Eligibility
6 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2018
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 31, 2019 · Synced Oct 20, 2026, 5:36 AM EDT
Withdrawn Phase 2 Interventional

Proton Accelerated Partial Breast Irradiation

NCT03940248
View directory record Official record
Conditions
Breast Cancer
Interventions
Proton Accelerated Partial Breast Irradiation
Radiation
Lead sponsor
University of Cincinnati
Other
Eligibility
50 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Oct 6, 2021 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1Phase 2 Interventional Results available

ProspectiveTrial of Proton Beam Combined With Anti-VEGF Therapy for Exudative Age-related Macular Degeneration (AMD)

NCT01213082
View directory record Official record
Conditions
Exudative Age-related Macular Degeneration
Interventions
24GyE proton and Anti-VEGF, 16GyE and anti-VEGF, Sham Irradiation and anti-VEGF
Drug
Lead sponsor
University of California, Davis
Other
Eligibility
50 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
1
States / cities
Sacramento, California
Source: ClinicalTrials.gov public record
Updated Jul 17, 2018 · Synced Oct 20, 2026, 5:36 AM EDT
Terminated No phase listed Observational

Photon/Proton Radiation Therapy for Carcinoma of the Nasopharynx

NCT00797290
View directory record Official record
Conditions
Nasopharynx Cancer
Interventions
Not listed
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2015
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 10, 2017 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Not applicable Interventional

A Pilot Study of Ultra-High Dose Rate (ConformalFLASH®), for Reirradiation of Carcinoma of the Head and Neck

NCT07644585
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
ConformalFLASH irradiation
Radiation
Lead sponsor
IBA Proton Therapy, Inc.
Industry
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 18, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Results available

Platinum Doublet Chemotherapy and Proton Beam Radiation Therapy in Treating Patients With Stage II-III Non-small Cell Lung Cancer That Cannot Be Removed by Surgery

NCT03132532
View directory record Official record
Conditions
Recurrent Lung Non-Small Cell Carcinoma, Stage II Lung Cancer AJCC v8, Stage III Lung Cancer AJCC v8, Unresectable Lung Non-Small Cell Carcinoma
Interventions
Carboplatin, Cisplatin, Etoposide, Paclitaxel, Pemetrexed, Proton Beam Radiation Therapy, Quality-of-Life Assessment, Questionnaire Administration
Drug · Radiation · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 2 Interventional Results available

Positron Emission Tomography and Computed Tomography in Guiding Radiation Therapy for Stage III Non-small Cell Lung Cancer

NCT01507428
View directory record Official record
Conditions
Stage III Lung Non-Small Cell Cancer AJCC v7, Stage IIIA Lung Non-Small Cell Cancer AJCC v7, Stage IIIB Lung Non-Small Cell Cancer AJCC v7
Interventions
18F-Fluoromisonidazole, Carboplatin, Computed Tomography, External Beam Radiation Therapy, Fludeoxyglucose F-18, Image-Guided Adaptive Radiation Therapy, Laboratory Biomarker Analysis, Paclitaxel, Positron Emission Tomography
Drug · Procedure · Radiation + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2022
U.S. locations
29
States / cities
Palo Alto, California • Augusta, Georgia • Chicago, Illinois + 23 more
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Completed No phase listed Observational

Photon/Proton Radiation Therapy for Cancers of the Nasal Cavity and/or Paranasal Sinuses

NCT00797498
View directory record Official record
Conditions
Cancers of Nasal Cavity, Cancers of Paranasal Sinuses
Interventions
Xerostomia questionnaire
Other
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2015
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 14, 2017 · Synced Oct 20, 2026, 5:36 AM EDT
Withdrawn Phase 2 Interventional

Testing the Addition of an Immunotherapy Drug, Atezolizumab, to the Usual Chemotherapy Treatment During Radiation Therapy for Superior Sulcus Non-small Cell Lung Cancer

NCT04989283
View directory record Official record
Conditions
Lung Non-Small Cell Carcinoma, Stage IIB Lung Cancer AJCC v8, Stage IIIA Lung Cancer AJCC v8, Superior Sulcus Lung Carcinoma
Interventions
Atezolizumab, Biopsy, Biospecimen Collection, Carboplatin, Cisplatin, Computed Tomography, Etoposide, External Beam Radiation Therapy, Magnetic Resonance Imaging, Paclitaxel, Pemetrexed, Positron Emission Tomography, Therapeutic Conventional Surgery
Biological · Procedure · Drug + 1 more
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2031
U.S. locations
46
States / cities
Jonesboro, Arkansas • Tampa, Florida • Boise, Idaho + 41 more
Source: ClinicalTrials.gov public record
Updated Sep 26, 2023 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Phase 2 Interventional

A Study of Lower Radiotherapy Dose to Treat Children With CNS Germinoma

NCT06368817
View directory record Official record
Conditions
Basal Ganglia Germinoma, Diabetes Insipidus, Germinoma, Pineal Region Germinoma, Suprasellar Germinoma, Thalamic Germinoma
Interventions
3-Dimensional Conformal Proton Radiation Therapy, 3-Dimensional Conformal Radiation Therapy, Biospecimen Collection, Carboplatin, Etoposide, Intensity-Modulated Proton Therapy, Intensity-Modulated Radiation Therapy, Lumbar Puncture, Magnetic Resonance Imaging, Questionnaire Administration, Surgical Procedure
Radiation · Procedure · Drug + 1 more
Lead sponsor
Children's Oncology Group
Network
Eligibility
3 Years to 29 Years
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2033
U.S. locations
97
States / cities
Mobile, Alabama • Phoenix, Arizona • Little Rock, Arkansas + 76 more
Source: ClinicalTrials.gov public record
Updated Aug 25, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Neoadjuvant Accelerated Short Course Radiation Therapy With Proton Beam and Capecitabine for Resectable Pancreatic Cancer

NCT00438256
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
Proton Beam Radiation, Capecitabine
Procedure · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jan 23, 2019 · Synced Oct 20, 2026, 5:36 AM EDT
Active, not recruiting Phase 2 Interventional

A Study To Evaluate Hypofractionated Proton Therapy Or IMRT For Recurrent, Oligometastatic Prostate Cancer

NCT04190446
View directory record Official record
Conditions
Metastatic Prostate Adenocarcinoma, Oligometastatic Prostate Carcinoma, Prostate Adenocarcinoma, Recurrent Prostate Carcinoma, Stage IVB Prostate Cancer AJCC v8
Interventions
Intensity-Modulated Radiation Therapy, Proton Beam Radiation Therapy, Quality-of-Life Assessment, Questionnaire Administration, Computed Tomography, Magnetic Resonance Imaging, Biospecimen Collection
Radiation · Other · Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Male only
Enrollment
84 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2028
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 9, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Suspended Phase 1Phase 2 Interventional

External Beam Radiation Therapy in Combination With Talquetamab for the Treatment of Multiple Myeloma Patients With Extramedullary Disease

NCT06572605
View directory record Official record
Conditions
Extramedullary Disease in Multiple Myeloma, Multiple Myeloma
Interventions
Biospecimen Collection, Bone Marrow Aspiration, Bone Marrow Biopsy, Computed Tomography, Electronic Health Record Review, External Beam Radiation Therapy, Image Guided Biopsy, Positron Emission Tomography, Talquetamab
Procedure · Other · Radiation + 1 more
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Active, not recruiting Not applicable Interventional Accepts healthy volunteers

A Study of How Proton Beam Radiotherapy (PBRT) Affects Brain Function and Quality of Life in Children and Young Adults Undergoing Treatment for a Brain Tumor

NCT05288439
View directory record Official record
Conditions
Brain Tumor, Metastatic Brain Tumor
Interventions
Resting-state functional connectivity MRI, Neurocognitive battery with quality-of-life assessment
Diagnostic Test · Other
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
6 Years to 25 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2027
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Active, not recruiting Phase 3 Interventional

Phase III Study of 5tx vs 15tx of RT (X-rays or Protons) Including RNI in Breast Cancer Patients

NCT04443413
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8
Interventions
Proton Beam Radiation Therapy, Questionnaire Administration, X-ray Therapy
Radiation · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2029
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 16, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Active, not recruiting Phase 2 Interventional

A Clinical and Molecular Risk-Directed Therapy for Newly Diagnosed Medulloblastoma

NCT01878617
View directory record Official record
Conditions
Medulloblastoma
Interventions
Craniospinal Irradiation with boost to the primary tumor site, Cyclophosphamide, Cisplatin, Vincristine, Vismodegib, Pemetrexed, Gemcitabine, Aerobic Training, Neurocognitive Remediation
Radiation · Drug · Other
Lead sponsor
St. Jude Children's Research Hospital
Other
Eligibility
3 Years to 39 Years
Enrollment
660 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2031
U.S. locations
14
States / cities
Palo Alto, California • San Diego, California • New Haven, Connecticut + 11 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Early Phase 1 Interventional

Pencil Beam Scanning in Patients With Renal Tumors

NCT03810651
View directory record Official record
Conditions
Renal Tumor, Wilms Tumor
Interventions
Proton beam radiation using pencil beam scanning
Other
Lead sponsor
Children's Hospital of Philadelphia
Other
Eligibility
0 Years to 30 Years
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2028
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 15, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Phase 3 Interventional

Radiation Therapy With RapidPlan Knowledge-based Planning vs Human-Driven Planning for Treatment of Prostate Cancer

NCT06625034
View directory record Official record
Conditions
Prostate Carcinoma
Interventions
Biospecimen Collection, Magnetic Resonance Imaging, Photon Beam Radiation Therapy, Positron Emission Tomography, Questionnaire Administration, Radiation Therapy Treatment Planning and Simulation
Procedure · Radiation · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Male only
Enrollment
108 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
2
States / cities
Scottsdale, Arizona • Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Terminated Not applicable Interventional Results available

Hypofractionated Pencil-Beam Scanning Intensity-modulated Proton Therapy (IMPT) in Recurrent Rectal Cancer

NCT04827732
View directory record Official record
Conditions
Recurrent Rectal Cancer
Interventions
Hypofractionated Pencil-Beam Scanning Intensity-modulated Proton Therapy, MEVION S250i Hyperscan and Adaptive Aperture Proton Therapy Machine
Radiation · Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Early Phase 1 Interventional

Evaluation of Bridging Radiation Therapy Before CAR T-Cell Infusion for the Treatment of Relapsed or Refractory Large B-Cell Lymphoma

NCT05800405
View directory record Official record
Conditions
Recurrent Diffuse Large B-Cell Lymphoma, Refractory Diffuse Large B-Cell Lymphoma
Interventions
Biospecimen Collection, Chimeric Antigen Receptor T-Cell Therapy, Computed Tomography, External Beam Radiation Therapy, Leukapheresis, Magnetic Resonance Imaging, Positron Emission Tomography
Procedure · Biological · Radiation
Lead sponsor
City of Hope Medical Center
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Feb 4, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Recruiting Phase 2 Interventional

PROton Therapy for Post Surgical Treatment of GYNecologic Cancer

NCT05758688
View directory record Official record
Conditions
Cervical Cancer, Uterine Cancer, Endometrial Cancer
Interventions
Whole Pelvis (WP) Pencil Beam Scanning Proton Radiation (PBS PRT)
Radiation
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
3
States / cities
Voorhees Township, New Jersey • Lancaster, Pennsylvania • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 17, 2026 · Synced Oct 20, 2026, 5:36 AM EDT
Active, not recruiting Phase 3 Interventional

Observation or Radiation Therapy in Treating Patients With Newly Diagnosed Grade II Meningioma That Has Been Completely Removed by Surgery

NCT03180268
View directory record Official record
Conditions
Grade 2 Meningioma, Intracranial Meningioma
Interventions
Biospecimen Collection, Clinical Observation, Intensity-Modulated Radiation Therapy, Laboratory Biomarker Analysis, Magnetic Resonance Imaging, Proton Beam Radiation Therapy, Quality-of-Life Assessment
Procedure · Other · Radiation
Lead sponsor
NRG Oncology
Other
Eligibility
18 Years and older
Enrollment
162 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2032
U.S. locations
198
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 162 more
Source: ClinicalTrials.gov public record
Updated Oct 2, 2026 · Synced Oct 20, 2026, 5:36 AM EDT