Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 20, 2026, 11:09 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Proton Therapy Clear all
Completed Not applicable Interventional

Proton Radiotherapy for Recurrent Tumors

NCT01126476
View directory record Official record
Conditions
Tumors
Interventions
Proton Radiotherapy
Other
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2020
U.S. locations
3
States / cities
Warrenville, Illinois • Oklahoma City, Oklahoma • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Apr 23, 2020 · Synced Sep 20, 2026, 11:09 PM 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Withdrawn Phase 1 Interventional Accepts healthy volunteers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 20, 2026, 11:09 PM EDT
Completed Phase 1Phase 2 Interventional Results available

APBI Proton Feasibility and Phase II Study

NCT01839838
View directory record Official record
Conditions
Stage IA-IIA Breast Cancer
Interventions
Proton Therapy
Radiation
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
50 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Nov 6, 2024 · Synced Sep 20, 2026, 11:09 PM EDT
Active, not recruiting Not applicable Interventional

FLASH Radiotherapy for the Treatment of Symptomatic Bone Metastases in the Thorax

NCT05524064
View directory record Official record
Conditions
Bone Metastases in the Thorax
Interventions
FLASH Radiotherapy
Radiation
Lead sponsor
Varian, a Siemens Healthineers Company
Industry
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
2
States / cities
Peoria, Illinois • Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 20, 2026, 11:09 PM EDT
Active, not recruiting Phase 3 Interventional

Radiation Therapy With Protons or Photons in Treating Patients With Liver Cancer

NCT03186898
View directory record Official record
Conditions
Recurrent Hepatocellular Carcinoma, Stage III Hepatocellular Carcinoma AJCC v7, Unresectable Hepatocellular Carcinoma
Interventions
Biospecimen Collection, Computed Tomography, Laboratory Biomarker Analysis, Magnetic Resonance Imaging, Quality-of-Life Assessment, Radiation Therapy
Procedure · Other · Radiation
Lead sponsor
NRG Oncology
Other
Eligibility
18 Years and older
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
27
States / cities
Atlanta, Georgia • Warrenville, Illinois • Baltimore, Maryland + 18 more
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Sep 20, 2026, 11:09 PM 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 20, 2026, 11:09 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

Effect of Uridine on GABA and High Energy Phosphate Levels in Healthy Volunteers

NCT01261260
View directory record Official record
Conditions
Healthy Male Subjects
Interventions
Uridine
Drug
Lead sponsor
Mclean Hospital
Other
Eligibility
18 Years to 60 Years · Male only
Enrollment
33 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2006 – 2008
U.S. locations
1
States / cities
Belmont, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 15, 2010 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Early Phase 1 Interventional

Concurrent Chemoradiation + 5-FU + Mitomycin-C in Anal Carcinoma

NCT01858025
View directory record Official record
Conditions
Carcinoma of the Anal Canal
Interventions
Pencil Beam scanning Radiation, 5-fluorouracil, Mitomycin-C
Radiation · Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2021
U.S. locations
2
States / cities
Boston, Massachusetts • Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 17, 2026 · Synced Sep 20, 2026, 11:09 PM EDT
Recruiting Not applicable Interventional

Reduction of Gastrointestinal Toxicity in Prostate Cancer by Proton Spot Placement

NCT06200259
View directory record Official record
Conditions
Prostate Cancer, Prostate Adenocarcinoma, Prostate Carcinoma
Interventions
Spot Delete planning for proton therapy, Traditional proton treatment planning system
Radiation
Lead sponsor
Covenant Health Cancer Center
Other
Eligibility
18 Years and older · Male only
Enrollment
500 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2040
U.S. locations
1
States / cities
Knoxville, Tennessee
Source: ClinicalTrials.gov public record
Updated Dec 17, 2025 · Synced Sep 20, 2026, 11:09 PM EDT
Terminated Not applicable Interventional Results available

Dual-Energy CT on Plan Quality, Dose-delivery Accuracy, and Simulated Outcomes of Patients Treated With Proton or Photon Therapy

NCT03403361
View directory record Official record
Conditions
Lung Cancer, Brain Cancer, Head and Neck Cancer
Interventions
Siemens Somatom Definition Edge, Philips Brilliance Big Bore CT/simulator
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Feb 29, 2024 · Synced Sep 20, 2026, 11:09 PM EDT
Not yet recruiting Phase 1 Interventional Accepts healthy volunteers

Effect of Proton Pump Inhibitors on Gut Microbiota Composition and Metabolites in Healthy Subjects Using CapScan

NCT07054593
View directory record Official record
Conditions
Healthy Subjects
Interventions
CapScan
Device
Lead sponsor
Envivo Bio Inc
Industry
Eligibility
18 Years to 85 Years
Enrollment
44 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Mountain View, California
Source: ClinicalTrials.gov public record
Updated Jul 7, 2025 · Synced Sep 20, 2026, 11:09 PM EDT
Active, not recruiting Phase 2 Interventional

Selective Avoidance of Nodal VolumEs at Minimal Risk (GCC 20110)

NCT04609280
View directory record Official record
Conditions
Head and Neck Cancer, Oropharynx Cancer, Oropharyngeal Squamous Cell Carcinoma
Interventions
Intensity modulated radiotherapy (IMRT)/volumetric modulated arc therapy (VMAT) or Pencil beam proton therapy (PBPT)
Radiation
Lead sponsor
University of Maryland, Baltimore
Other
Eligibility
18 Years and older
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
6
States / cities
Baltimore, Maryland • Bel Air, Maryland • Columbia, Maryland + 1 more
Source: ClinicalTrials.gov public record
Updated Aug 11, 2026 · Synced Sep 20, 2026, 11:09 PM EDT
Terminated Phase 4 Interventional

Lansoprazole Preventing Gastroduodenal Stress Ulcerations

NCT00220909
View directory record Official record
Conditions
Patients Undergoing Elective Coronary Artery Bypass Graft
Interventions
Lansoprazole
Drug
Lead sponsor
Temple University
Other
Eligibility
18 Years to 65 Years
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2006
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 10, 2008 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Phase 1 Interventional

Do Acid Sensing Ion Channels Contribute to Heartburn?

NCT01095133
View directory record Official record
Conditions
Gastroesophageal Reflux Disease, Heartburn
Interventions
Amiloride, Placebo
Drug
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years to 59 Years
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Sep 19, 2012 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Phase 3 Interventional Results available

Trial of IW-3718 for 8 Weeks in Patients With Persistent Gastroesophageal Reflux Disease (GERD) Receiving Proton Pump Inhibitors (PPIs)

NCT03561883
View directory record Official record
Conditions
Gastroesophageal Reflux Disease (GERD)
Interventions
IW-3718, placebo, Standard-dose PPIs QD
Drug
Lead sponsor
Ironwood Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
609 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
98
States / cities
Birmingham, Alabama • Dothan, Alabama • Peoria, Arizona + 81 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2021 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Early Phase 1 Interventional Accepts healthy volunteers

Impact of Continuous Positive Airway Pressure on Breathing Motion Amplitude

NCT02852473
View directory record Official record
Conditions
Cancer
Interventions
Continuous Positive Airway Pressure
Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016
U.S. locations
1
States / cities
Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Oct 13, 2016 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Not applicable Interventional Results available

Proton Therapy for Unresectable Cancer (CA) of Pancreas

NCT00685763
View directory record Official record
Conditions
Pancreatic Cancer
Interventions
Proton radiation and chemotherapy
Radiation
Lead sponsor
University of Florida
Other
Eligibility
18 Years to 100 Years
Enrollment
13 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Aug 23, 2017 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Phase 4 Interventional

Comparison of the Nighttime Effects of Two Different Drugs on Subjects With GERD

NCT00304421
View directory record Official record
Conditions
Gastroesophageal Reflux Disease
Interventions
rabeprazole, pantoprazole
Drug
Lead sponsor
VA Greater Los Angeles Healthcare System
Federal
Eligibility
18 Years to 65 Years
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2007
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 16, 2007 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Phase 4 Interventional Results available

Pilot Study To Investigate The Association Between Acid Control And Heartburn Symptoms After Proton Pump Inhibitor Treatment

NCT02708355
View directory record Official record
Conditions
Heartburn
Interventions
Esomeprazole 20 mg, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
22 Years to 65 Years
Enrollment
55 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
2
States / cities
Oklahoma City, Oklahoma
Source: ClinicalTrials.gov public record
Updated Apr 18, 2017 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Not applicable Interventional Results available

Proton Radiation for Chordomas and Chondrosarcomas

NCT01449149
View directory record Official record
Conditions
Chordomas, Chondrosarcomas
Interventions
Proton Therapy
Radiation
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
54 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 4, 2025 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Not applicable Interventional Results available

Ultrasound-Based Liver Fat Quantification (LFQ) Pilot Study

NCT04657523
View directory record Official record
Conditions
Non-Alcoholic Fatty Liver Disease, Non-Alcoholic Steatohepatitis
Interventions
Investigational Liver Fat Quantification Software
Device
Lead sponsor
Philips Clinical & Medical Affairs Global
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
3
States / cities
Boston, Massachusetts • Boardman, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 22, 2026 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Phase 1 Interventional Accepts healthy volunteers

A Study to Determine the Relative Bioavailability of Capsule and Tablet Formulations of GDC-0941 and the Effect of Food and Proton Pump Inhibition on GDC-0941 Tablet Pharmacokinetics in Healthy Volunteers

NCT00999128
View directory record Official record
Conditions
Healthy Volunteers
Interventions
GDC-0941, rabeprazole
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years to 65 Years
Enrollment
50 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2009 – 2010
U.S. locations
1
States / cities
South San Francisco, California
Source: ClinicalTrials.gov public record
Updated Feb 8, 2017 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Not applicable Interventional Results available

Individualized Stereotactic Body Radiotherapy of Liver Metastases

NCT01239381
View directory record Official record
Conditions
Solid Tumor, Liver Metastases
Interventions
Stereotactic body radiotherapy-proton
Radiation
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2017
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Sep 29, 2025 · Synced Sep 20, 2026, 11:09 PM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Cobalamin Absorption From Fortified Food

NCT01399164
View directory record Official record
Conditions
Vitamin B-12 Deficiency, Achlorhydria
Interventions
14C-B12 fortified bread
Other
Lead sponsor
USDA, Western Human Nutrition Research Center
Federal
Eligibility
60 Years and older
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2010 – 2013
U.S. locations
1
States / cities
Davis, California
Source: ClinicalTrials.gov public record
Updated Oct 21, 2013 · Synced Sep 20, 2026, 11:09 PM EDT