{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Proton+beam+radiation+therapy.&page=29",
    "query": {
      "intervention": "Proton beam radiation therapy.",
      "page": 29
    },
    "page_size": 10
  },
  "pagination": {
    "page": 29,
    "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=30&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Proton+beam+radiation+therapy.&page=28&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-16T04:57:50.709Z",
  "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": "NCT03581500",
      "title": "Hyperpolarized Carbon C 13 Pyruvate Magnetic Resonance Spectroscopic Imaging in Predicting Treatment Response in Patients With Prostate Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Adenocarcinoma",
        "PSA Level Greater Than Ten",
        "Stage IIB Prostate Cancer AJCC v8",
        "Stage III Prostate Cancer AJCC v8",
        "Stage IIIA Prostate Cancer AJCC v8",
        "Stage IIIB Prostate Cancer AJCC v8",
        "Stage IIIC Prostate Cancer AJCC v8",
        "Stage IV Prostate Cancer AJCC v8",
        "Stage IVA Prostate Cancer AJCC v8",
        "Stage IVB Prostate Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Hyperpolarized Carbon C 13 Pyruvate",
          "type": "DRUG"
        },
        {
          "name": "Magnetic Resonance Spectroscopic Imaging",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 0,
      "start_date": "2019-02-06",
      "completion_date": "2024-10-16",
      "has_results": false,
      "last_update_posted_date": "2025-04-23",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03581500"
    },
    {
      "nct_id": "NCT02822365",
      "title": "Pocket Phantom Tool in Improving Accuracy of Quantitative PET/CT Imaging of Patients With Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Adult Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Imaging Phantoms",
          "type": "DEVICE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DEVICE"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "21 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "21 Years and older"
      },
      "enrollment_count": 2,
      "start_date": "2016-08-24",
      "completion_date": "2019-08-31",
      "has_results": false,
      "last_update_posted_date": "2019-09-25",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02822365"
    },
    {
      "nct_id": "NCT01342757",
      "title": "Magnetic Resonance Spectroscopy Imaging in Predicting Response to Vorinostat and Temozolomide in Patients With Recurrent or Progressive Glioblastoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Adult Glioblastoma",
        "Depression",
        "Recurrent Adult Brain Tumor"
      ],
      "interventions": [
        {
          "name": "vorinostat",
          "type": "DRUG"
        },
        {
          "name": "temozolomide",
          "type": "DRUG"
        },
        {
          "name": "magnetic resonance spectroscopic imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "survey administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "OTHER"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 12,
      "start_date": "2010-12",
      "completion_date": "2012-05",
      "has_results": true,
      "last_update_posted_date": "2018-01-29",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01342757"
    },
    {
      "nct_id": "NCT00797498",
      "title": "Photon/Proton Radiation Therapy for Cancers of the Nasal Cavity and/or Paranasal Sinuses",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancers of Nasal Cavity",
        "Cancers of Paranasal Sinuses"
      ],
      "interventions": [
        {
          "name": "Xerostomia questionnaire",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Florida",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 174,
      "start_date": "2006-08",
      "completion_date": "2015-12",
      "has_results": false,
      "last_update_posted_date": "2017-08-14",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00797498"
    },
    {
      "nct_id": "NCT02559752",
      "title": "Computer-based Neurocognitive Assessment in Children With Central Nervous System Tumors Receiving Proton Beam Radiation Therapy",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Central Nervous System"
      ],
      "interventions": [
        {
          "name": "NIH Toolbox Cognitive Battery",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "Washington University School of Medicine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "4 Years",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "4 Years to 21 Years"
      },
      "enrollment_count": 80,
      "start_date": "2015-10-13",
      "completion_date": "2032-04-30",
      "has_results": false,
      "last_update_posted_date": "2026-04-30",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02559752"
    },
    {
      "nct_id": "NCT05986916",
      "title": "Accurate Point of Care Liver Disease Diagnostics",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "NAFLD",
        "Nonalcoholic Fatty Liver"
      ],
      "interventions": [
        {
          "name": "Liverscope® exam",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "MR exam",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "FibroScan® exam (optional)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Blood draw",
          "type": "OTHER"
        },
        {
          "name": "Body measurements",
          "type": "OTHER"
        },
        {
          "name": "Questionnaires",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DIAGNOSTIC_TEST",
        "OTHER"
      ],
      "sponsor": "University of California, San Diego",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 50,
      "start_date": "2023-08-03",
      "completion_date": "2025-11",
      "has_results": false,
      "last_update_posted_date": "2025-10-23",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "La Jolla, California",
      "locations": [
        {
          "city": "La Jolla",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05986916"
    },
    {
      "nct_id": "NCT01063114",
      "title": "Proton Beam Radiotherapy for Medulloblastoma and Pineoblastoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Brain Tumor",
        "Medulloblastoma",
        "Pineoblastoma"
      ],
      "interventions": [
        {
          "name": "proton beam radiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "3 Years to 25 Years"
      },
      "enrollment_count": 90,
      "start_date": "2010-04-08",
      "completion_date": "2021-11",
      "has_results": true,
      "last_update_posted_date": "2025-08-13",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 2,
      "location_summary": "Boston, Massachusetts • Houston, Texas",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01063114"
    },
    {
      "nct_id": "NCT02695628",
      "title": "[18F]FMISO PET/CT After Transcatheter Arterial Embolization in Imaging Tumors in Patients With Liver Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Adult Liver Carcinoma",
        "Liver Cirrhosis"
      ],
      "interventions": [
        {
          "name": "18F-Fluoromisonidazole",
          "type": "DRUG"
        },
        {
          "name": "Arterial Embolization",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Stanford University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 5,
      "start_date": "2016-09-13",
      "completion_date": "2018-10-31",
      "has_results": true,
      "last_update_posted_date": "2024-01-31",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Palo Alto, California",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02695628"
    },
    {
      "nct_id": "NCT03100838",
      "title": "Drug Interaction With Proton Pump Inhibitors for Nifedipine ER Tablets",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy Volunteers"
      ],
      "interventions": [
        {
          "name": "Nifedipine 60 MG Extended Release Oral Tablet",
          "type": "DRUG"
        },
        {
          "name": "omeprazole/sodium bicarbonate",
          "type": "DRUG"
        },
        {
          "name": "SmartPill (TM)",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Food and Drug Administration (FDA)",
      "sponsor_class": "FED",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "55 Years",
        "sex": "ALL",
        "summary": "18 Years to 55 Years"
      },
      "enrollment_count": 64,
      "start_date": "2017-03-20",
      "completion_date": "2018-04-06",
      "has_results": true,
      "last_update_posted_date": "2019-08-16",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Columbia, Missouri",
      "locations": [
        {
          "city": "Columbia",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03100838"
    },
    {
      "nct_id": "NCT01783535",
      "title": "Protocol for the Study and Treatment of Participants With Intraocular Retinoblastoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Retinoblastoma"
      ],
      "interventions": [
        {
          "name": "vincristine",
          "type": "DRUG"
        },
        {
          "name": "topotecan",
          "type": "DRUG"
        },
        {
          "name": "filgrastim",
          "type": "DRUG"
        },
        {
          "name": "PEG-filgrastim",
          "type": "DRUG"
        },
        {
          "name": "carboplatin",
          "type": "DRUG"
        },
        {
          "name": "focal therapy",
          "type": "OTHER"
        },
        {
          "name": "etoposide",
          "type": "DRUG"
        },
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "MESNA",
          "type": "DRUG"
        },
        {
          "name": "doxorubicin",
          "type": "DRUG"
        },
        {
          "name": "enucleation",
          "type": "PROCEDURE"
        },
        {
          "name": "external beam radiation or proton beam radiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "St. Jude Children's Research Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 174,
      "start_date": "2013-06-19",
      "completion_date": "2027-02-21",
      "has_results": true,
      "last_update_posted_date": "2026-06-29",
      "last_synced_at": "2026-10-16T04:57:50.709Z",
      "location_count": 1,
      "location_summary": "Memphis, Tennessee",
      "locations": [
        {
          "city": "Memphis",
          "state": "Tennessee"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01783535"
    }
  ]
}