{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Proton+beam+radiation+therapy.&page=9",
    "query": {
      "intervention": "Proton beam radiation therapy.",
      "page": 9
    },
    "page_size": 10
  },
  "pagination": {
    "page": 9,
    "page_size": 10,
    "total_count": 855,
    "total_pages": 86,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Proton+beam+radiation+therapy.&page=10&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Proton+beam+radiation+therapy.&page=8&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-14T16:41:36.217Z",
  "attribution": "Data derived from public ClinicalTrials.gov records. The official record at https://clinicaltrials.gov/ remains the source of truth for current availability, contacts, and full study details.",
  "notes": [
    "This endpoint exposes only public summary fields — no participant contact emails, phone numbers, or scraped investigator contact details.",
    "For contact information and full protocol detail, follow each trial's `official_url` to the ClinicalTrials.gov record.",
    "This API is a navigational aid. It does not provide medical advice, eligibility determinations, or compensation guarantees."
  ],
  "trials": [
    {
      "nct_id": "NCT05563714",
      "title": "Anticoagulation With Enhanced Gastrointestinal Safety",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Upper Gastrointestinal Bleeding",
        "Peptic Ulcer Hemorrhage",
        "Anticoagulant-induced Bleeding"
      ],
      "interventions": [
        {
          "name": "Clinician Notification with Nurse Facilitation (CNNF)",
          "type": "BEHAVIORAL"
        },
        {
          "name": "Wait list control",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "University of Michigan",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 341,
      "start_date": "2022-10-05",
      "completion_date": "2023-01-04",
      "has_results": true,
      "last_update_posted_date": "2024-04-30",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05563714"
    },
    {
      "nct_id": "NCT00357240",
      "title": "Drug Interaction Study With Proton Pump Inhibitor",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Infections"
      ],
      "interventions": [
        {
          "name": "Atazanavir",
          "type": "DRUG"
        },
        {
          "name": "Atazanavir/Ritonavir",
          "type": "DRUG"
        },
        {
          "name": "Atazanavir/Ritonavir+Omeprazole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "ALL",
        "summary": "18 Years to 50 Years"
      },
      "enrollment_count": 56,
      "start_date": "2006-06",
      "completion_date": "2006-08",
      "has_results": false,
      "last_update_posted_date": "2011-04-08",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Hamilton, New Jersey",
      "locations": [
        {
          "city": "Hamilton",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00357240"
    },
    {
      "nct_id": "NCT00573924",
      "title": "Trial of Oral Versus Intravenous Proton Pump Inhibitor on Intragastric pH in Patients With Bleeding Ulcers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Peptic Ulcer Hemorrhage"
      ],
      "interventions": [
        {
          "name": "Proton pump inhibitor (lansoprazole)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 66,
      "start_date": "2006-02",
      "completion_date": "2007-12",
      "has_results": false,
      "last_update_posted_date": "2011-02-08",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00573924"
    },
    {
      "nct_id": "NCT03701555",
      "title": "A Study of PVP001, PVP002, and PVP003 in Healthy Adults and PVP001 and PVP002 in Adults With Celiac Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Digestive System Disease"
      ],
      "interventions": [
        {
          "name": "PvP001 placebo",
          "type": "OTHER"
        },
        {
          "name": "PvP001 100 mg",
          "type": "DRUG"
        },
        {
          "name": "PvP001 300 mg",
          "type": "DRUG"
        },
        {
          "name": "PvP001 900 mg",
          "type": "DRUG"
        },
        {
          "name": "Maximum Feasible Dose (MFD) of PvP002",
          "type": "DRUG"
        },
        {
          "name": "Maximum Tolerated Dose (MTD) of PvP001",
          "type": "DRUG"
        },
        {
          "name": "MTD of PvP001 following 7 days of PPI treatment",
          "type": "DRUG"
        },
        {
          "name": "PvP002 placebo",
          "type": "OTHER"
        },
        {
          "name": "PvP001 600 mg",
          "type": "DRUG"
        },
        {
          "name": "PvP003 placebo",
          "type": "DRUG"
        },
        {
          "name": "PvP003",
          "type": "DRUG"
        },
        {
          "name": "PvP003 150 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Millennium Pharmaceuticals, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "64 Years",
        "sex": "ALL",
        "summary": "18 Years to 64 Years"
      },
      "enrollment_count": 139,
      "start_date": "2018-06-19",
      "completion_date": "2021-07-02",
      "has_results": true,
      "last_update_posted_date": "2023-04-04",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Anaheim, California",
      "locations": [
        {
          "city": "Anaheim",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03701555"
    },
    {
      "nct_id": "NCT03501940",
      "title": "F18 DCFPyL PET/CT in Imaging Participants With Recurrent Prostate Cancer",
      "overall_status": "NO_LONGER_AVAILABLE",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Prostate Adenocarcinoma",
        "PSA Level Greater Than 0.2",
        "PSA Level Greater Than or Equal to Two",
        "PSA Progression",
        "Recurrent Prostate Carcinoma"
      ],
      "interventions": [
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Fluorine F 18 DCFPyL",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Andrei Iagaru",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2022-01-21",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03501940"
    },
    {
      "nct_id": "NCT04140513",
      "title": "Digital PET Scan for the Prediction of Outcomes in Patients With Locally Advanced Oropharyngeal Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Clinical Stage II HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Clinical Stage III HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Locally Advanced Oropharyngeal Squamous Cell Carcinoma",
        "Pathologic Stage II HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Pathologic Stage III HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Stage III Oropharyngeal (p16-Negative) Carcinoma AJCC v8",
        "Stage IVA Oropharyngeal (p16-Negative) Carcinoma AJCC v8",
        "Stage IVB Oropharyngeal (p16-Negative) Carcinoma AJCC v8"
      ],
      "interventions": [
        {
          "name": "Fludeoxyglucose F-18",
          "type": "RADIATION"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Ohio State University Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 0,
      "start_date": "2020-10-09",
      "completion_date": "2023-11-01",
      "has_results": false,
      "last_update_posted_date": "2024-03-08",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04140513"
    },
    {
      "nct_id": "NCT04592887",
      "title": "Feasibility Study of FLASH Radiotherapy for the Treatment of Symptomatic Bone Metastases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Bone Metastasis"
      ],
      "interventions": [
        {
          "name": "FLASH Radiotherapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Varian, a Siemens Healthineers Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 10,
      "start_date": "2020-11-03",
      "completion_date": "2023-03-27",
      "has_results": true,
      "last_update_posted_date": "2024-07-31",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Cincinnati, Ohio",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04592887"
    },
    {
      "nct_id": "NCT03764163",
      "title": "Image and Model Based Analysis of Lung Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Pulmonary Disease, Chronic Obstructive"
      ],
      "interventions": [
        {
          "name": "Pulmonary Function Test",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "CT Scans",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Questionnaires",
          "type": "BEHAVIORAL"
        },
        {
          "name": "MRI",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Xenon gas",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "BEHAVIORAL",
        "BIOLOGICAL"
      ],
      "sponsor": "Eric A. Hoffman",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "20 Years",
        "maximum_age": "89 Years",
        "sex": "ALL",
        "summary": "20 Years to 89 Years"
      },
      "enrollment_count": 341,
      "start_date": "1997-09-30",
      "completion_date": "2015-06-05",
      "has_results": false,
      "last_update_posted_date": "2019-01-22",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03764163"
    },
    {
      "nct_id": "NCT00067821",
      "title": "Comparison of PET and Proton MRS Imaging to Evaluate Pediatric Brain Tumor Activity",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Brain Tumors"
      ],
      "interventions": [
        {
          "name": "2-Flourodeoxyglucose",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Year to 21 Years"
      },
      "enrollment_count": 79,
      "start_date": "2014-02-11",
      "completion_date": "2019-05-10",
      "has_results": false,
      "last_update_posted_date": "2023-06-13",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00067821"
    },
    {
      "nct_id": "NCT00001574",
      "title": "A Pilot Study of 1H-Nuclear Magnetic Resonance Spectroscopic Imaging in Pediatric Patients With Primary and Metastatic Brain Tumors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Brain Neoplasm",
        "Brain Cancer",
        "Brain Tumor, Primary"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "Up to 21 Years"
      },
      "enrollment_count": 40,
      "start_date": "1997-03-14",
      "completion_date": "2019-05-06",
      "has_results": false,
      "last_update_posted_date": "2019-05-08",
      "last_synced_at": "2026-10-14T16:41:36.217Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001574"
    }
  ]
}