{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=131I+therapy",
    "query": {
      "intervention": "131I therapy"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 70,
    "total_pages": 7,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=131I+therapy&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T14:56:02.463Z",
  "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": "NCT01313936",
      "title": "High-Dose 131I-MIBG Therapy Combined With Vincristine and Five Days of Irinotecan for Resistant/Relapsed Neuroblastoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Neuroblastoma"
      ],
      "interventions": [
        {
          "name": "Metaiodobenzylguanidine (MIBG)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "30 Years",
        "sex": "ALL",
        "summary": "1 Year to 30 Years"
      },
      "enrollment_count": 32,
      "start_date": "2011-03",
      "completion_date": "2014-05",
      "has_results": true,
      "last_update_posted_date": "2019-04-29",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01313936"
    },
    {
      "nct_id": "NCT01377532",
      "title": "Compassionate Use of 131I-MIBG for Patients With Malignant Pheochromocytoma",
      "overall_status": "APPROVED_FOR_MARKETING",
      "study_type": "EXPANDED_ACCESS",
      "phases": [],
      "conditions": [
        "Pheochromocytoma",
        "Paraganglioma"
      ],
      "interventions": [
        {
          "name": "131 I-Metaiodobenzylguanidine (131 I-MIBG)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "2 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "2 Years and older"
      },
      "enrollment_count": null,
      "start_date": null,
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2020-05-06",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01377532"
    },
    {
      "nct_id": "NCT00023933",
      "title": "Radiolabeled Monoclonal Antibody Therapy in Treating Patients With Recurrent or Persistent Metastatic Colorectal Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Adenocarcinoma of the Colon",
        "Adenocarcinoma of the Rectum",
        "Recurrent Colon Cancer",
        "Recurrent Rectal Cancer",
        "Stage IV Colon Cancer",
        "Stage IV Rectal Cancer"
      ],
      "interventions": [
        {
          "name": "iodine I 131 monoclonal antibody CC49-deltaCH2",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "19 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "19 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2001-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-01-25",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "Birmingham, Alabama",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00023933"
    },
    {
      "nct_id": "NCT00002754",
      "title": "Monoclonal Antibody Therapy in Treating Patients With Primary or Metastatic Melanoma or Brain Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Brain and Central Nervous System Tumors",
        "Melanoma (Skin)",
        "Metastatic Cancer"
      ],
      "interventions": [
        {
          "name": "monoclonal antibody Me1-14 F(ab')2",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Duke University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "3 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "3 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "1993-02",
      "completion_date": "2001-04",
      "has_results": false,
      "last_update_posted_date": "2013-02-20",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "Durham, North Carolina",
      "locations": [
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00002754"
    },
    {
      "nct_id": "NCT00860171",
      "title": "Iodine I 131 Monoclonal Antibody BC8 Before Autologous Stem Cell Transplant in Treating Patients With Relapsed or Refractory Hodgkin Lymphoma or Non-Hodgkin Lymphoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Recurrent B-Cell Non-Hodgkin Lymphoma",
        "Recurrent Hodgkin Lymphoma",
        "Recurrent T-Cell Non-Hodgkin Lymphoma",
        "Refractory B-Cell Non-Hodgkin Lymphoma",
        "Refractory Hodgkin Lymphoma",
        "Refractory T-Cell Non-Hodgkin Lymphoma"
      ],
      "interventions": [
        {
          "name": "Autologous Hematopoietic Stem Cell Transplantation",
          "type": "PROCEDURE"
        },
        {
          "name": "Iodine I 131 Monoclonal Antibody BC8",
          "type": "RADIATION"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "Fred Hutchinson 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": 16,
      "start_date": "2009-02",
      "completion_date": "2020-03-21",
      "has_results": true,
      "last_update_posted_date": "2020-04-03",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00860171"
    },
    {
      "nct_id": "NCT00295763",
      "title": "A New Study to Follow-up Thyroid Cancer Patients Who Participated in a Previous Study, Which Compared the Success of Destruction of the Thyroid Remnant Using Standard Treatment or Thyrogen.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Differentiated Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Thyrogen (thyrotropin alfa for injection)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Genzyme, a Sanofi Company",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 61,
      "start_date": "2006-05",
      "completion_date": "2006-09",
      "has_results": false,
      "last_update_posted_date": "2015-03-18",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 4,
      "location_summary": "Aurora, Colorado • Baltimore, Maryland • Columbus, Ohio + 1 more",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00295763"
    },
    {
      "nct_id": "NCT03923257",
      "title": "Dosimetry Guided PRRT With 177Lu-DOTATATE in Children and Adolescents",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Neuroendocrine Tumors",
        "Pheochromocytoma",
        "Paraganglioma"
      ],
      "interventions": [
        {
          "name": "177Lu-DOTA-tyr3-OCTREOTATE",
          "type": "DRUG"
        },
        {
          "name": "Peptide Receptor Radiotherapy (PRRT)",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Sue O'Dorisio",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "1 Year to 20 Years"
      },
      "enrollment_count": 0,
      "start_date": "2020-08-04",
      "completion_date": "2021-06-03",
      "has_results": false,
      "last_update_posted_date": "2021-06-08",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "Iowa City, Iowa",
      "locations": [
        {
          "city": "Iowa City",
          "state": "Iowa"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03923257"
    },
    {
      "nct_id": "NCT00085293",
      "title": "Decitabine in Treating Patients With Metastatic Papillary Thyroid Cancer or Follicular Thyroid Cancer Unresponsive to Iodine I 131",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Thyroid Cancer",
        "Stage IVA Follicular Thyroid Cancer",
        "Stage IVA Papillary Thyroid Cancer",
        "Stage IVB Follicular Thyroid Cancer",
        "Stage IVB Papillary Thyroid Cancer",
        "Stage IVC Follicular Thyroid Cancer",
        "Stage IVC Papillary Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Decitabine",
          "type": "DRUG"
        },
        {
          "name": "Iodine I 131",
          "type": "RADIATION"
        },
        {
          "name": "Recombinant thyrotropin alfa",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Fludeoxyglucose F 18",
          "type": "RADIATION"
        },
        {
          "name": "Positron emission tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "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": "2004-05",
      "completion_date": "2014-05",
      "has_results": true,
      "last_update_posted_date": "2018-11-29",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 3,
      "location_summary": "Aurora, Colorado • Columbus, Ohio • Houston, Texas",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Columbus",
          "state": "Ohio"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00085293"
    },
    {
      "nct_id": "NCT01850888",
      "title": "MIBG for Refractory Neuroblastoma and Pheochromocytoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Relapsed Neuroblastoma",
        "Metastatic Pheochromocytoma"
      ],
      "interventions": [
        {
          "name": "131 I-Metaiodobenzylguanidine (131I-MIBG)",
          "type": "DRUG"
        },
        {
          "name": "Potassium iodide solution",
          "type": "DRUG"
        },
        {
          "name": "G-CSF",
          "type": "DRUG"
        },
        {
          "name": "hematopoietic stem cell infusion",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Masonic Cancer Center, University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "1 Year and older"
      },
      "enrollment_count": 15,
      "start_date": "2013-12",
      "completion_date": "2025-10-20",
      "has_results": false,
      "last_update_posted_date": "2025-12-18",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01850888"
    },
    {
      "nct_id": "NCT01321554",
      "title": "A Multicenter, Randomized, Double-Blind, Placebo-Controlled, Trial of Lenvatinib (E7080) in 131I-Refractory Differentiated Thyroid Cancer (DTC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Lenvatinib",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eisai Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 392,
      "start_date": "2011-03-17",
      "completion_date": "2019-03-19",
      "has_results": true,
      "last_update_posted_date": "2023-06-22",
      "last_synced_at": "2026-09-10T14:56:02.463Z",
      "location_count": 38,
      "location_summary": "Little Rock, Arkansas • La Jolla, California • Los Gatos, California + 30 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Gatos",
          "state": "California"
        },
        {
          "city": "Mission Viejo",
          "state": "California"
        },
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01321554"
    }
  ]
}