{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Radiation+Therapy+%28RT%29&page=4",
    "query": {
      "intervention": "Radiation Therapy (RT)",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 1006,
    "total_pages": 101,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Radiation+Therapy+%28RT%29&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Radiation+Therapy+%28RT%29&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-04T16:57:31.664Z",
  "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": "NCT05873439",
      "title": "Genomically Guided Radiation Dose Personalization in Locally Advanced NSCLC",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Nonsmall Cell Lung Cancer",
        "Nonsmall Cell Lung Cancer, Stage II",
        "Nonsmall Cell Lung Cancer Stage III",
        "Unresectable Non-Small Cell Lung Carcinoma"
      ],
      "interventions": [
        {
          "name": "Genomically Guided Radiation Therapy (RT)",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 3,
      "start_date": "2023-05-25",
      "completion_date": "2024-08-21",
      "has_results": false,
      "last_update_posted_date": "2026-04-01",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05873439"
    },
    {
      "nct_id": "NCT01864109",
      "title": "Irinotecan and Temozolomide in Combination With Existing High Dose Alkylator Based Chemotherapy for Treatment of Patients With Newly Diagnosed Ewing Sarcoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Newly Diagnosed Ewing Sarcoma"
      ],
      "interventions": [
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin",
          "type": "DEVICE"
        },
        {
          "name": "Vincristine",
          "type": "DRUG"
        },
        {
          "name": "Ifosfamide",
          "type": "DRUG"
        },
        {
          "name": "Etoposide",
          "type": "DRUG"
        },
        {
          "name": "Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Radiation Therapy*",
          "type": "RADIATION"
        },
        {
          "name": "Temozolomide",
          "type": "DRUG"
        },
        {
          "name": "Irinotecan",
          "type": "DRUG"
        },
        {
          "name": "Mesna",
          "type": "DRUG"
        },
        {
          "name": "Dexrazoxane",
          "type": "DRUG"
        },
        {
          "name": "G-CSF",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "Memorial Sloan Kettering Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "40 Years",
        "sex": "ALL",
        "summary": "1 Year to 40 Years"
      },
      "enrollment_count": 83,
      "start_date": "2013-05",
      "completion_date": "2027-05",
      "has_results": false,
      "last_update_posted_date": "2026-04-17",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 7,
      "location_summary": "Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more",
      "locations": [
        {
          "city": "Basking Ridge",
          "state": "New Jersey"
        },
        {
          "city": "Middletown",
          "state": "New Jersey"
        },
        {
          "city": "Montvale",
          "state": "New Jersey"
        },
        {
          "city": "Commack",
          "state": "New York"
        },
        {
          "city": "Harrison",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01864109"
    },
    {
      "nct_id": "NCT05902533",
      "title": "REDEL Trial: Reduced Elective Nodal Dose for Anal Cancer Toxicity Mitigation",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2",
        "PHASE3"
      ],
      "conditions": [
        "Anal Cancer"
      ],
      "interventions": [
        {
          "name": "Radiation (reduced elective nodal dose (30.6 Gy)",
          "type": "RADIATION"
        },
        {
          "name": "Capecitabine",
          "type": "DRUG"
        },
        {
          "name": "Mitomycin c",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "DRUG"
      ],
      "sponsor": "University of Cincinnati",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 33,
      "start_date": "2023-08-14",
      "completion_date": "2029-08-14",
      "has_results": false,
      "last_update_posted_date": "2025-12-18",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 3,
      "location_summary": "Cincinnati, Ohio • Columbus, Ohio • Burlington, Vermont",
      "locations": [
        {
          "city": "Cincinnati",
          "state": "Ohio"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Burlington",
          "state": "Vermont"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05902533"
    },
    {
      "nct_id": "NCT05406232",
      "title": "Temporal Immunologic Changes With Hypofractionated Radiation-Induced DNA Damage in Breast Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Carcinoma",
        "Invasive Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biopsy",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "M.D. Anderson 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": 36,
      "start_date": "2023-09-15",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-05-06",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05406232"
    },
    {
      "nct_id": "NCT06129747",
      "title": "Repeat Breast Conserving Surgery Followed by Daily Partial Breast Irradiation in Ipsilateral Breast",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Tumor, Breast"
      ],
      "interventions": [
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Case Comprehensive Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 55,
      "start_date": "2023-11-30",
      "completion_date": "2029-08-09",
      "has_results": false,
      "last_update_posted_date": "2026-08-06",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 2,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06129747"
    },
    {
      "nct_id": "NCT03122509",
      "title": "A Clinical Trial of Durvalumab and Tremelimumab, Administered With Radiation Therapy or Ablation in Patients With Colorectal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Colorectal Cancer"
      ],
      "interventions": [
        {
          "name": "durvalumab",
          "type": "DRUG"
        },
        {
          "name": "tremelimumab",
          "type": "DRUG"
        },
        {
          "name": "Radiotherapy (RT)",
          "type": "RADIATION"
        },
        {
          "name": "ablation",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "PROCEDURE"
      ],
      "sponsor": "Memorial Sloan Kettering 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": 25,
      "start_date": "2017-04-24",
      "completion_date": "2021-04-28",
      "has_results": true,
      "last_update_posted_date": "2022-07-06",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03122509"
    },
    {
      "nct_id": "NCT00107198",
      "title": "Treating Young Patients With Newly Diagnosed, Low Stage, Lymphocyte Predominant Hodgkin Disease",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Ann Arbor Stage I Childhood Hodgkin Lymphoma",
        "Ann Arbor Stage II Childhood Hodgkin Lymphoma",
        "Childhood Nodular Lymphocyte Predominant B-Cell Lymphoma"
      ],
      "interventions": [
        {
          "name": "Conventional Surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Vincristine Sulfate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "Children's Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "21 Years",
        "sex": "ALL",
        "summary": "1 Month to 21 Years"
      },
      "enrollment_count": 188,
      "start_date": "2006-03-10",
      "completion_date": "2026-03-31",
      "has_results": true,
      "last_update_posted_date": "2026-06-05",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 147,
      "location_summary": "Birmingham, Alabama • Phoenix, Arizona • Tucson, Arizona + 113 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00107198"
    },
    {
      "nct_id": "NCT00004123",
      "title": "Radiation Therapy Plus Doxorubicin in Treating Patients With Resectable Primary or Recurrent Retroperitoneal Soft Tissue Sarcoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "Doxorubicin hydrochloride (DOX)",
          "type": "DRUG"
        },
        {
          "name": "Conventional surgery",
          "type": "PROCEDURE"
        },
        {
          "name": "Intraoperative radiation therapy (IORT)",
          "type": "RADIATION"
        },
        {
          "name": "Radiation Therapy (RT)",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "RADIATION"
      ],
      "sponsor": "M.D. Anderson 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": 36,
      "start_date": "1997-07",
      "completion_date": "2009-10",
      "has_results": false,
      "last_update_posted_date": "2012-07-30",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00004123"
    },
    {
      "nct_id": "NCT02945579",
      "title": "Multicenter Trial for Eliminating Breast Cancer Surgery or Radiotherapy in Exceptional Responders to Neoadjuvant Systemic Therapy",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Estrogen Receptor Negative",
        "HER2 Positive Breast Carcinoma",
        "HER2/Neu Negative",
        "Invasive Breast Carcinoma",
        "Progesterone Receptor Negative",
        "Stage I Breast Cancer AJCC v7",
        "Stage IA Breast Cancer AJCC v7",
        "Stage IB Breast Cancer AJCC v7",
        "Stage II Breast Cancer AJCC v6 and v7",
        "Stage IIA Breast Cancer AJCC v6 and v7",
        "Stage IIB Breast Cancer AJCC v6 and v7",
        "Triple-Negative Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Undergo EBRT",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Partial Breast Irradiation",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "30 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "30 Years and older · Female only"
      },
      "enrollment_count": 120,
      "start_date": "2017-01-20",
      "completion_date": "2028-01-31",
      "has_results": false,
      "last_update_posted_date": "2026-09-25",
      "last_synced_at": "2026-10-04T16:57:31.664Z",
      "location_count": 8,
      "location_summary": "Gilbert, Arizona • Jacksonville, Florida • Honolulu, Hawaii + 5 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Honolulu",
          "state": "Hawaii"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        },
        {
          "city": "Voorhees Township",
          "state": "New Jersey"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02945579"
    },
    {
      "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": "2026-10-04T16:57:31.664Z",
      "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"
    }
  ]
}