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Showing 1–24 of 59 matching trials from the live ClinicalTrials.gov search.
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Filters: Intervention: Proton Particle Therapy Clear all
Recruiting Phase 2 Interventional

Folfox+Irinotecan+Chemort In Esophageal Cancer

NCT04656041
View directory record Official record
Conditions
Gastroesophageal Junction Adenocarcinoma, Esophagogastric Cancer
Interventions
FOLFOX/ nal-IRI, Paclitaxel, Carboplatin, Proton Radiation Therapy
Drug · Radiation
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
3
States / cities
Boston, Massachusetts • Newton, Massachusetts
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Sep 9, 2026, 7:10 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 8, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Active, not recruiting Not applicable Interventional

Pragmatic Randomized Trial of Proton vs. Photon Therapy for Patients With Non-Metastatic Breast Cancer: A Radiotherapy Comparative Effectiveness (RADCOMP) Consortium Trial

NCT02603341
View directory record Official record
Conditions
Breast Cancer
Interventions
Photon, Proton
Radiation
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
21 Years and older
Enrollment
1,238 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2036
U.S. locations
40
States / cities
Birmingham, Alabama • Phoenix, Arizona • San Diego, California + 33 more
Source: ClinicalTrials.gov public record
Updated Nov 5, 2025 · Synced Sep 9, 2026, 7:10 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 15, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Phase 1 Interventional

Image-guided Proton Therapy for the Treatment of Locally Advanced Unresectable Head and Neck Cancer

NCT04870840
View directory record Official record
Conditions
Locally Advanced Head and Neck Squamous Cell Carcinoma, Locally Advanced Hypopharyngeal Squamous Cell Carcinoma, Locally Advanced Laryngeal Squamous Cell Carcinoma, Locally Advanced Nasopharyngeal Squamous Cell Carcinoma, Locally Advanced Oral Cavity Squamous Cell Carcinoma, Locally Advanced Oropharyngeal Squamous Cell Carcinoma, Malignant Posterior Tongue Neoplasm, Stage II Cutaneous Squamous Cell Carcinoma of the Head and Neck AJCC v8, Stage II Hypopharyngeal Carcinoma AJCC v8, Stage II Laryngeal Cancer AJCC v8, Stage II Nasopharyngeal Carcinoma AJCC v8, Stage II Oropharyngeal (p16-Negative) Carcinoma AJCC v8, Stage III Cutaneous Squamous Cell Carcinoma of the Head and Neck AJCC v8, Stage III Hypopharyngeal Carcinoma AJCC v8, Stage III Laryngeal Cancer AJCC v8, Stage III Nasopharyngeal Carcinoma AJCC v8, Stage III Oropharyngeal (p16-Negative) Carcinoma AJCC v8, Unresectable Head and Neck Squamous Cell Carcinoma, Unresectable Oropharyngeal Squamous Cell Carcinoma
Interventions
Proton Beam Radiation Therapy, Quality-of-Life Assessment, Questionnaire Administration
Radiation · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 28, 2024 · Synced Sep 9, 2026, 7:10 AM EDT
Active, not recruiting Not applicable Interventional

A Prospective Comparative Study of Outcomes With Proton and Photon Radiation in Prostate Cancer

NCT03561220
View directory record Official record
Conditions
Prostate Cancer
Interventions
Standard of Care IMRT (Photon), Standard of Care Proton Therapy, Proton Arm 1: Standard Proton Therapy, Proton Arm 2: Hypofractionated Proton Therapy
Radiation
Lead sponsor
University of Florida
Other
Eligibility
30 Years to 85 Years · Male only
Enrollment
3,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
53
States / cities
Birmingham, Alabama • La Jolla, California • Loma Linda, California + 44 more
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Not applicable Interventional Results available

Proton Therapy for Lymph Nodes in Breast Cancer

NCT01365845
View directory record Official record
Conditions
Breast Cancer
Interventions
Photon, 3D-Proton/Conventional plan or 3D-proton only
Radiation
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 100 Years
Enrollment
18 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 28, 2018 · Synced Sep 9, 2026, 7:10 AM EDT
Active, not recruiting Phase 1 Interventional

Radioligand Therapy After PSMA PET Guided External Beam Radiotherapy for Treating Post-Prostatectomy Patients With Biochemically Recurrent Prostate Cancer

NCT06105918
View directory record Official record
Conditions
Biochemically Recurrent Prostate Carcinoma, Prostate Adenocarcinoma
Interventions
Biospecimen Collection, Computed Tomography, External Beam Radiation Therapy, Flotufolastat F-18, Lutetium Lu 177 PSMA-10.1, Positron Emission Tomography, Single Photon Emission Computed Tomography
Procedure · Radiation · Other + 1 more
Lead sponsor
Emory University
Other
Eligibility
18 Years and older · Male only
Enrollment
6 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
1
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Dec 8, 2025 · Synced Sep 9, 2026, 7:10 AM EDT
Not listed Not applicable Interventional

Intensity-Modulated or Proton Radiation Therapy for Sinonasal Malignancy

NCT01586767
View directory record Official record
Conditions
Adenoid Cystic Carcinoma, Squamous Cell Carcinoma, Sinonasal Carcinoma, Sinonasal Undifferentiated Carcinoma, Mucoepidermoid Carcinoma, Schneiderian Carcinoma, Myoepithelial Carcinoma, Esthesioneuroblastoma, Melanoma
Interventions
Proton radiation therapy, Intensity-modulated radiotherapy
Radiation
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Sep 20, 2023 · Synced Sep 9, 2026, 7:10 AM EDT
Recruiting Not applicable Interventional

Proton Therapy in the Treatment of Liver Metastases

NCT01697371
View directory record Official record
Conditions
Liver Metastases
Interventions
Proton, Proton Radiation
Radiation
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2033
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Active, not recruiting Phase 2 Interventional

Radiation Therapy in Treating Patients With Stage 0-II Breast Cancer

NCT01245712
View directory record Official record
Conditions
Breast Adenocarcinoma, Ductal Breast Carcinoma In Situ, Invasive Breast Carcinoma, Stage 0 Breast Cancer AJCC v6 and v7, Stage I Breast Cancer AJCC v7, Stage IA Breast Cancer AJCC v7, Stage IB Breast Cancer AJCC v7, Stage II Breast Cancer AJCC v6 and v7, Stage IIA Breast Cancer AJCC v6 and v7, Stage IIB Breast Cancer AJCC v6 and v7
Interventions
Accelerated Partial Breast Irradiation, Proton Beam Radiation Therapy, Quality-of-Life Assessment
Radiation · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2032
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Not applicable Interventional

Proton Particle Therapy for Cardiac Arrhythmia

NCT04392193
View directory record Official record
Conditions
Cardiac Arrhythmia
Interventions
Proton Particle Therapy
Radiation
Lead sponsor
Konstantinos Siontis
Other
Eligibility
18 Years to 80 Years
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jan 14, 2025 · Synced Sep 9, 2026, 7:10 AM EDT
Terminated Phase 1 Interventional

Proton Therapy and Bevacizumab for Primary Liver Tumors

NCT00426829
View directory record Official record
Conditions
Liver Cancer, Hepatocellular Carcinoma, Cholangiocarcinoma
Interventions
Bevacizumab, Proton Radiation Therapy
Drug · Radiation
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jul 31, 2012 · Synced Sep 9, 2026, 7:10 AM EDT
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
163 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
198
States / cities
Birmingham, Alabama • Phoenix, Arizona • Scottsdale, Arizona + 162 more
Source: ClinicalTrials.gov public record
Updated Jun 24, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Relative Bioavailability, Proton Pump Inhibitor (PPI) (Rabeprazole) Effect, Food Effect and Particle Size Effect of New Acalabrutinib Tablet in Healthy Subjects

NCT04488016
View directory record Official record
Conditions
Bioavailability, B-cell Lymphoid Cancer
Interventions
Treatment A- Part 1, Treatment B- Part 1, Treatment C - Part 1, Treatment D- Part 1, Treatment A-Part 2, Treatment B - Part 2, Treatment C - Part 2, Treatment D - Part 2
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
54 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020 – 2021
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Feb 2, 2021 · Synced Sep 9, 2026, 7:10 AM EDT
Active, not recruiting Phase 3 Interventional

Comparing Photon Therapy To Proton Therapy To Treat Patients With Lung Cancer

NCT01993810
View directory record Official record
Conditions
Stage II Non-Small Cell Lung Cancer AJCC v7, Stage IIA Non-Small Cell Lung Carcinoma AJCC v7, Stage IIB Non-Small Cell Lung Carcinoma AJCC v7, Stage III Non-Small Cell Lung Cancer AJCC v7, Stage IIIA Non-Small Cell Lung Cancer AJCC v7, Stage IIIB Non-Small Cell Lung Cancer AJCC v7
Interventions
Carboplatin, Cisplatin, Durvalumab, Etoposide, Paclitaxel, Pemetrexed Disodium, Photon Beam Radiation Therapy, Proton Beam Radiation Therapy, Quality-of-Life Assessment, Questionnaire Administration
Drug · Biological · Radiation + 1 more
Lead sponsor
Radiation Therapy Oncology Group
Network
Eligibility
18 Years and older
Enrollment
330 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2028
U.S. locations
30
States / cities
Jacksonville, Florida • Warrenville, Illinois • Baltimore, Maryland + 23 more
Source: ClinicalTrials.gov public record
Updated Jun 7, 2026 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Not applicable Interventional Results available

Study of Hypofractionated Proton Beam Radiation Therapy for Prostate Cancer

NCT00831623
View directory record Official record
Conditions
Prostate Cancer
Interventions
Proton Radiation, Proton
Radiation
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older · Male only
Enrollment
167 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2019
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Mar 12, 2023 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Not applicable Interventional Results available

Proton Beam Teletherapy for Post-Hysterectomy Cancers of the Uterus and Cervix

NCT01600040
View directory record Official record
Conditions
Uterine Cancer, Cervical Cancer
Interventions
Proton radiation therapy
Radiation
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2023
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 28, 2024 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Phase 1Phase 2 Interventional Results available

Proton Beam Therapy for Treatment of Hepatocellular Carcinoma

NCT00614913
View directory record Official record
Conditions
Liver Cancer, Hepatocellular Carcinoma
Interventions
Proton radiation therapy
Radiation
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
76 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1998 – 2009
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated Aug 19, 2012 · Synced Sep 9, 2026, 7:10 AM EDT
Terminated No phase listed Observational

Study of Proton SBRT and Immunotherapy for Recurrent/Progressive Locoregional or Metastatic Head and Neck Cancer

NCT03539198
View directory record Official record
Conditions
Head and Neck Cancer
Interventions
Proton Stereotactic Body Radiation Therapy (SBRT) (5 fractions; 3500-4500 cGy), Proton Stereotactic Body Radiation Therapy (SBRT) (3-5 fractions; various dose and fractionation regimens depending on treatment site)., Nivolumab 3 mg/kg IV q2 weeks, Proton or Photon SBRT (3-5 fractions; various dose and fractionation regimens depending on treatment site).
Radiation · Drug
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Sep 9, 2026, 7:10 AM EDT
Terminated Phase 2Phase 3 Interventional Results available

External Beam Radiation With or Without Chemotherapy to Treat High Risk Prostate Cancer

NCT01603420
View directory record Official record
Conditions
Prostate Cancer
Interventions
Luteinizing hormone-releasing hormone (LHRH), Docetaxel, Conformal Radiation Therapy (RT)
Drug · Other
Lead sponsor
Proton Collaborative Group
Network
Eligibility
18 Years to 75 Years · Male only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
3
States / cities
Warrenville, Illinois • Oklahoma City, Oklahoma • Hampton, Virginia
Source: ClinicalTrials.gov public record
Updated Mar 13, 2016 · Synced Sep 9, 2026, 7:10 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Neoadjuvant Hormonal Therapy Combined With Chemoimmunotherapy

NCT02345772
View directory record Official record
Conditions
HER2-positive Breast Cancer, ER-positive Breast Cancer
Interventions
fulvestrant 500 mg, Docetaxel, Trastuzumab (H, 8mg/kg, Pertuzumab (P, 840 mg
Drug
Lead sponsor
Western Regional Medical Center
Other
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2015
U.S. locations
1
States / cities
Goodyear, Arizona
Source: ClinicalTrials.gov public record
Updated Feb 19, 2018 · Synced Sep 9, 2026, 7:10 AM EDT
Completed Phase 2 Interventional Results available

18F-DOPA-PET/MRI Scan in Imaging Elderly Patients With Newly Diagnosed Grade IV Malignant Glioma or Glioblastoma During Planning for a Short Course of Proton Beam Radiation Therapy

NCT03778294
View directory record Official record
Conditions
Glioblastoma, Malignant Glioma
Interventions
Computed Tomography, Fluorodopa F 18, Magnetic Resonance Imaging, Positron Emission Tomography, Proton Beam Radiation Therapy, Quality-of-Life Assessment, Questionnaire Administration, Temozolomide
Procedure · Other · Radiation + 1 more
Lead sponsor
Mayo Clinic
Other
Eligibility
65 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2023
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jul 2, 2025 · Synced Sep 9, 2026, 7:10 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Image-Guided, Intensity-Modulated Photon or Proton Beam Radiation Therapy in Treating Patients With Stage II-IIIB Non-small Cell Lung Cancer

NCT01629498
View directory record Official record
Conditions
Recurrent Lung Non-Small Cell Carcinoma, Stage II Non-Small Cell Lung Cancer AJCC v7, Stage IIA Non-Small Cell Lung Carcinoma AJCC v7, Stage IIB Non-Small Cell Lung Carcinoma AJCC v7, Stage IIIA Non-Small Cell Lung Cancer AJCC v7, Stage IIIB Lung Non-Small Cell Cancer AJCC v7
Interventions
Image Guided Radiation Therapy, Intensity-Modulated Radiation Therapy, Laboratory Biomarker Analysis, Photon Beam Radiation Therapy, Proton Beam Radiation Therapy, Questionnaire Administration
Radiation · Other
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
146 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 8, 2026 · Synced Sep 9, 2026, 7:10 AM EDT