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Showing 1–24 of 440 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Proton Therapy Clear all
Completed No phase listed Observational

Proton Pump Inhibitor (PPI) Therapy for Newly Diagnosed Esophagitis

NCT00586963
View directory record Official record
Conditions
Erosive Esophagitis, Reflux Esophagitis, GERD
Interventions
Not listed
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Aug 22, 2010 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers Results available

Drug Interaction With Proton Pump Inhibitors for Nifedipine ER Tablets

NCT03100838
View directory record Official record
Conditions
Healthy Volunteers
Interventions
Nifedipine 60 MG Extended Release Oral Tablet, omeprazole/sodium bicarbonate, SmartPill (TM)
Drug · Device
Lead sponsor
Food and Drug Administration (FDA)
Federal
Eligibility
18 Years to 55 Years
Enrollment
64 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2018
U.S. locations
1
States / cities
Columbia, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 15, 2019 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Not applicable Interventional Results available

Docetaxel, Androgen Deprivation and Proton Therapy for High Risk Prostate Cancer

NCT01040624
View directory record Official record
Conditions
Prostate Cancer
Interventions
> 15% risk of + LN
Radiation
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older · Male only
Enrollment
77 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2022
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Oct 2, 2023 · Synced Sep 3, 2026, 10:28 AM EDT
Recruiting Phase 4 Interventional

OPEN Versus InTact Capsule Proton Pump Inhibitors for the Treatment of Marginal Ulcers

NCT05799105
View directory record Official record
Conditions
Marginal Ulcer
Interventions
Omeprazole 40 milligrams
Drug
Lead sponsor
Stephen Firkins
Other
Eligibility
Not listed
Enrollment
122 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Sep 3, 2026, 10:28 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

StrataXRT in Preventing Radiation Dermatitis in Pediatric Patients Undergoing Radiation Therapy to the Brain or Spinal Cord

NCT03990597
View directory record Official record
Conditions
Central Nervous System Sarcoma, Ependymoma, Glioma, Malignant Intracranial Germ Cell Tumor, Medulloblastoma, Pineoblastoma, Primary Central Nervous System Neoplasm
Interventions
Placebo Administration, Questionnaire Administration, Wound Dressing Material
Other · Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
2 Years to 17 Years
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2020
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Oct 8, 2024 · Synced Sep 3, 2026, 10:28 AM EDT
Active, not recruiting Not applicable Interventional

Proton Pencil Beam Scanning GRID for Treatment of Bulky Tumors

NCT05121545
View directory record Official record
Conditions
Sarcoma, Melanoma
Interventions
Pro-GRID
Radiation
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Jan 28, 2026 · Synced Sep 3, 2026, 10:28 AM EDT
Not listed No phase listed Observational

Quality of Life Study for Prostate Cancer Patients

NCT00561444
View directory record Official record
Conditions
Prostate Cancer
Interventions
Questionnaire
Behavioral
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
1,051 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2020
U.S. locations
3
States / cities
Voorhees Township, New Jersey • Albuquerque, New Mexico • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 13, 2020 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Phase 2 Interventional Results available

Proton Radiotherapy for Patients With Non-Small Cell Lung Cancer (NSCLC)

NCT00495040
View directory record Official record
Conditions
Lung Cancer
Interventions
Proton Radiotherapy
Radiation
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
Not listed
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2017
U.S. locations
2
States / cities
Boston, Massachusetts • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Jan 13, 2019 · Synced Sep 3, 2026, 10:28 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 5, 2021 · Synced Sep 3, 2026, 10:28 AM EDT
Recruiting Phase 2 Interventional

Post-Cardiac Surgery Acute Kidney Injury Prevention by Administration of Proton Pump Inhibitor (P2 Trial)

NCT06706258
View directory record Official record
Conditions
Acute Kidney Injury
Interventions
Protonix (Pantoprazole) 40 mg q 12 hrs for 3 days, Pepcid (Famotidine) 20 mg q 12 hrs for 3 days
Drug
Lead sponsor
The University of Texas Health Science Center, Houston
Other
Eligibility
18 Years to 90 Years
Enrollment
400 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 13, 2025 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Not applicable Interventional Results available

A Clinical Trial of Proton Pump Inhibitors to Treat Children With Chronic Otitis Media With Effusion

NCT00546117
View directory record Official record
Conditions
Otitis Media With Effusion
Interventions
lansoprazole, placebo
Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
2 Years to 12 Years
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated May 31, 2018 · Synced Sep 3, 2026, 10:28 AM EDT
Completed No phase listed Observational

Proton-Based Stereotactic Ablative Body Radiotherapy for Prostate Cancer

NCT03159676
View directory record Official record
Conditions
Prostate Cancer
Interventions
Proton beam
Radiation
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Male only
Enrollment
150 participants
Timeline
2017 – 2024
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Feb 24, 2026 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Phase 4 Interventional Accepts healthy volunteers Results available

Effects of Gastric Acid on Colonic Microbiome

NCT01901276
View directory record Official record
Conditions
Clostridium Difficile
Interventions
Omeprazole 40 mg bid
Drug
Lead sponsor
Daniel Freedberg, MD
Other
Eligibility
18 Years and older · Male only
Enrollment
14 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2013 – 2015
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Aug 14, 2024 · Synced Sep 3, 2026, 10:28 AM EDT
Terminated Not applicable Interventional Results available

COPD Patients Diagnosed With GERD,COPD Exacerbations After Treatment With High Dose PPI

NCT00523367
View directory record Official record
Conditions
Gastroesophageal Reflux, Chronic Obstructive Pulmonary Disease
Interventions
24 hour pH testing
Procedure
Lead sponsor
University of Florida
Other
Eligibility
40 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2010
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jan 17, 2013 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Evaluate Effects of Proton-pump Inhibitor on Acalabrutinib Capsule When Administered Orally With COCA-COLA in Healthy Participants

NCT04489797
View directory record Official record
Conditions
Infectious Disease
Interventions
Acalabrutinib, Rabeprazole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 55 Years
Enrollment
35 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2020
U.S. locations
1
States / cities
Anaheim, California
Source: ClinicalTrials.gov public record
Updated Oct 29, 2020 · Synced Sep 3, 2026, 10:28 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 3, 2026, 10:28 AM EDT
Terminated Phase 3 Interventional Accepts healthy volunteers Results available

Averting Complications of Proton Pump Inhibitor Therapy by Effervescent Calcium Magnesium Citrate

NCT03812380
View directory record Official record
Conditions
Osteoporosis, Hypomagnesemia
Interventions
EffCaMgCit, Placebo
Drug · Other
Lead sponsor
University of Texas Southwestern Medical Center
Other
Eligibility
21 Years to 99 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2019 – 2021
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Aug 16, 2022 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Quantification of Intramyocardial Lipid by Proton Magnetic Resonance Spectroscopy

NCT00469911
View directory record Official record
Conditions
Heart Transplantation
Interventions
Magnetic Resonance Spectroscopy, Ex vivo heart biopsy
Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years to 45 Years
Enrollment
18 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2005 – 2009
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Sep 3, 2026, 10:28 AM EDT
Terminated Phase 2 Interventional

Stereotactic Body Proton Radiotherapy for the Treatment of Liver Cancer

NCT04805788
View directory record Official record
Conditions
Recurrent Hepatocellular Carcinoma, Stage I Hepatocellular Carcinoma AJCC v8, Stage II Hepatocellular Carcinoma AJCC v8, Stage III Hepatocellular Carcinoma AJCC v8
Interventions
Proton Stereotactic Body Radiation Therapy, Quality-of-Life Assessment
Radiation · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2025
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Dec 30, 2025 · Synced Sep 3, 2026, 10:28 AM EDT
Recruiting No phase listed Observational

Registry Study for Radiation Therapy Outcomes

NCT01255748
View directory record Official record
Conditions
Neoplasms
Interventions
Proton Therapy, Photon Therapy, SRS, Brachytherapy
Radiation
Lead sponsor
Proton Collaborative Group
Network
Eligibility
Not listed
Enrollment
50,000 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2009
U.S. locations
29
States / cities
Scottsdale, Arizona • Little Rock, Arkansas • San Diego, California + 25 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 3, 2026, 10:28 AM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Esomeprazole on the Pharmacokinetics of Oral Treprostinil

NCT00963027
View directory record Official record
Conditions
Hypertension, Pulmonary, Pulmonary Arterial Hypertension
Interventions
Treprostinil diethanolamine, Esomeprazole
Drug
Lead sponsor
United Therapeutics
Industry
Eligibility
18 Years to 55 Years
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009
U.S. locations
1
States / cities
Austin, Texas
Source: ClinicalTrials.gov public record
Updated Mar 7, 2010 · Synced Sep 3, 2026, 10:28 AM EDT
Terminated Not applicable Interventional

Preoperative Proton Radiotherapy for Retroperitoneal Sarcoma

NCT00901836
View directory record Official record
Conditions
Retroperitoneal Sarcoma
Interventions
Preoperative proton therapy, Surgery
Radiation · Procedure
Lead sponsor
University of Florida
Other
Eligibility
18 Years and older · Male only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2012
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Feb 9, 2017 · Synced Sep 3, 2026, 10:28 AM EDT
Terminated Phase 1Phase 2 Interventional Results available

Chemotherapy and Proton Radiation for the Treatment of Locally Advanced Lung Cancer

NCT00614484
View directory record Official record
Conditions
Locally Advanced Non-Small Cell Lung Cancer
Interventions
Proton Radiation Therapy, Taxol, Carboplatin
Radiation · Drug
Lead sponsor
Loma Linda University
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1999 – 2011
U.S. locations
1
States / cities
Loma Linda, California
Source: ClinicalTrials.gov public record
Updated May 21, 2014 · Synced Sep 3, 2026, 10:28 AM EDT
Active, not recruiting Phase 2 Interventional

Proton Radiation for Stage II/III Breast Cancer

NCT01758445
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasm, Breast Tumor, Cancer of the Breast
Interventions
Proton Radiotherapy
Radiation
Lead sponsor
Proton Collaborative Group
Network
Eligibility
18 Years and older
Enrollment
220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2032
U.S. locations
5
States / cities
Warrenville, Illinois • Baltimore, Maryland • Somerset, New Jersey + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 3, 2025 · Synced Sep 3, 2026, 10:28 AM EDT