{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=50+Gy+Radiation+Therapy&page=2",
    "query": {
      "intervention": "50 Gy Radiation Therapy",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 216,
    "total_pages": 22,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=50+Gy+Radiation+Therapy&page=3&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=50+Gy+Radiation+Therapy&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-09-30T19:32:37.199Z",
  "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": "NCT01192815",
      "title": "Erlotinib Hydrochloride and Radiation Therapy in Stage III-IV Squamous Cell Cancer of the Head and Neck",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stage III Squamous Cell Carcinoma of the Hypopharynx",
        "Stage III Squamous Cell Carcinoma of the Larynx",
        "Stage III Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage III Squamous Cell Carcinoma of the Oropharynx",
        "Stage III Verrucous Carcinoma of the Larynx",
        "Stage III Verrucous Carcinoma of the Oral Cavity",
        "Stage IV Squamous Cell Carcinoma of the Hypopharynx",
        "Stage IV Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage IV Squamous Cell Carcinoma of the Nasopharynx",
        "Stage IV Squamous Cell Carcinoma of the Oropharynx",
        "Stage IV Verrucous Carcinoma of the Larynx",
        "Stage IV Verrucous Carcinoma of the Oral Cavity"
      ],
      "interventions": [
        {
          "name": "erlotinib hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "intensity-modulated radiation therapy",
          "type": "RADIATION"
        },
        {
          "name": "pharmacogenomic studies",
          "type": "OTHER"
        },
        {
          "name": "gene expression analysis",
          "type": "OTHER"
        },
        {
          "name": "3-dimensional conformal radiation therapy",
          "type": "RADIATION"
        },
        {
          "name": "biopsy",
          "type": "OTHER"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "questionnaire administration",
          "type": "OTHER"
        },
        {
          "name": "enzyme-linked immunosorbent assay",
          "type": "OTHER"
        },
        {
          "name": "polymorphism analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "70 Years",
        "sex": "ALL",
        "summary": "18 Years to 70 Years"
      },
      "enrollment_count": 2,
      "start_date": "2011-01",
      "completion_date": "2012-10",
      "has_results": true,
      "last_update_posted_date": "2020-05-12",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01192815"
    },
    {
      "nct_id": "NCT03536897",
      "title": "IORT Following Breast Conserving Surgery for Early Stage Breast Cancer Registry",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "IORT",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Mount Carmel Health System",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "65 Years and older · Female only"
      },
      "enrollment_count": 168,
      "start_date": "2018-02-27",
      "completion_date": "2028-02-27",
      "has_results": false,
      "last_update_posted_date": "2024-11-27",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03536897"
    },
    {
      "nct_id": "NCT00006359",
      "title": "Androgen Suppression Plus Radiation Therapy in Treating Patients With Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "LHRH agonist",
          "type": "DRUG"
        },
        {
          "name": "antiandrogen",
          "type": "DRUG"
        },
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        },
        {
          "name": "Brachytherapy boost",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "Alliance for Clinical Trials in Oncology",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "MALE",
        "summary": "18 Years to 120 Years · Male only"
      },
      "enrollment_count": 63,
      "start_date": "2000-09",
      "completion_date": "2012-03",
      "has_results": false,
      "last_update_posted_date": "2016-07-18",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 26,
      "location_summary": "Lewes, Delaware • Newark, Delaware • Wilmington, Delaware + 18 more",
      "locations": [
        {
          "city": "Lewes",
          "state": "Delaware"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Wilmington",
          "state": "Delaware"
        },
        {
          "city": "Orlando",
          "state": "Florida"
        },
        {
          "city": "Elkton MD",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00006359"
    },
    {
      "nct_id": "NCT01347333",
      "title": "Stereotactic Body Radiotherapy for Liver Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Liver Metastases",
        "Hepatocellular Carcinoma",
        "Intrahepatic Cholangiocarcinoma"
      ],
      "interventions": [
        {
          "name": "Stereotactic body radiosurgery",
          "type": "RADIATION"
        },
        {
          "name": "Stereotactic Body Radiotherapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Mercy Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 23,
      "start_date": "2008-09",
      "completion_date": "2016-09",
      "has_results": true,
      "last_update_posted_date": "2020-03-03",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 1,
      "location_summary": "St Louis, Missouri",
      "locations": [
        {
          "city": "St Louis",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01347333"
    },
    {
      "nct_id": "NCT00904345",
      "title": "Study of Radiation (RT) Concurrent With Cetuximab in Patients With Advanced Head and Neck Squamous Cell Carcinoma (SCC)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Cancer"
      ],
      "interventions": [
        {
          "name": "Cetuximab",
          "type": "DRUG"
        },
        {
          "name": "50-60 Gy and 70 Gy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "University of Michigan Rogel Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "70 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "70 Years and older"
      },
      "enrollment_count": 23,
      "start_date": "2009-04",
      "completion_date": "2020-12",
      "has_results": true,
      "last_update_posted_date": "2021-02-24",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 2,
      "location_summary": "Ann Arbor, Michigan",
      "locations": [
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00904345"
    },
    {
      "nct_id": "NCT03035890",
      "title": "Hypofractionated Radiation Therapy to Improve Immunotherapy Response in Non-Small Cell Lung Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Non Small Cell Lung Cancer Metastatic"
      ],
      "interventions": [
        {
          "name": "Radiation",
          "type": "RADIATION"
        },
        {
          "name": "Immuno-Therapeutic Agent",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "DRUG"
      ],
      "sponsor": "West Virginia University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2017-01-23",
      "completion_date": "2022-06-30",
      "has_results": true,
      "last_update_posted_date": "2025-04-01",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 1,
      "location_summary": "Morgantown, West Virginia",
      "locations": [
        {
          "city": "Morgantown",
          "state": "West Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03035890"
    },
    {
      "nct_id": "NCT04808323",
      "title": "MRI-Guided Adaptive Radiation Therapy for Organ Preservation in Rectal Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Rectal Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Capecitabine",
          "type": "DRUG"
        },
        {
          "name": "Initial Dose of Radiation before Dose Escalation",
          "type": "DEVICE"
        },
        {
          "name": "Cohort A: Dose Escalation Radiation",
          "type": "DEVICE"
        },
        {
          "name": "Cohort B: Dose Escalation Radiation",
          "type": "DEVICE"
        },
        {
          "name": "Cohort C: Dose Escalation Radiation",
          "type": "DEVICE"
        },
        {
          "name": "FOLFOX",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 22,
      "start_date": "2021-06-17",
      "completion_date": "2029-01-20",
      "has_results": false,
      "last_update_posted_date": "2026-03-16",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04808323"
    },
    {
      "nct_id": "NCT03809000",
      "title": "A Study of Salvage Radiotherapy With or Without Enzalutamide in Recurrent Prostate Cancer Following Surgery",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Enzalutamide",
          "type": "DRUG"
        },
        {
          "name": "Bicalutamide",
          "type": "DRUG"
        },
        {
          "name": "GnRH analog",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "DRUG"
      ],
      "sponsor": "RTOG Foundation, Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 188,
      "start_date": "2019-04-15",
      "completion_date": "2029-09-15",
      "has_results": true,
      "last_update_posted_date": "2025-12-30",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 106,
      "location_summary": "Gilbert, Arizona • Peoria, Arizona • Phoenix, Arizona + 89 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Peoria",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03809000"
    },
    {
      "nct_id": "NCT05076942",
      "title": "Groningen International Study on Sentinel Nodes in Vulvar Cancer-III",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Vulvar Cancer",
        "Sentinel Lymph Node",
        "Lymph Node Metastases"
      ],
      "interventions": [
        {
          "name": "Radiotherapy combined with cisplatin",
          "type": "RADIATION"
        },
        {
          "name": "Cisplatin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "DRUG"
      ],
      "sponsor": "University Medical Center Groningen",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 157,
      "start_date": "2021-01-01",
      "completion_date": "2029-01-01",
      "has_results": false,
      "last_update_posted_date": "2023-08-01",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 21,
      "location_summary": "Orange, California • Miami Beach, Florida • Springfield, Massachusetts + 18 more",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        },
        {
          "city": "Miami Beach",
          "state": "Florida"
        },
        {
          "city": "Springfield",
          "state": "Massachusetts"
        },
        {
          "city": "Grand Rapids",
          "state": "Michigan"
        },
        {
          "city": "Traverse City",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05076942"
    },
    {
      "nct_id": "NCT03238157",
      "title": "Steroids for Early Treatment of Radiation Retinopathy",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Radiation Retinopathy"
      ],
      "interventions": [
        {
          "name": "Fluocinolone Acetonide (FA) implant",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "The Cleveland Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "85 Years",
        "sex": "ALL",
        "summary": "18 Years to 85 Years"
      },
      "enrollment_count": 0,
      "start_date": "2022-02-01",
      "completion_date": "2022-09-01",
      "has_results": false,
      "last_update_posted_date": "2021-08-04",
      "last_synced_at": "2026-09-30T19:32:37.199Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03238157"
    }
  ]
}