{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Thyroid+hormone+withdrawal",
    "query": {
      "intervention": "Thyroid hormone withdrawal"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 7,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-26T03:02:28.409Z",
  "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": "NCT07346157",
      "title": "Liothyronine in Combination With BIT Regimen for Medulloblastoma With or Without Minimal Residual Disease",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Medulloblastoma",
        "Medulloblastoma, Childhood",
        "Medulloblastoma Recurrent"
      ],
      "interventions": [
        {
          "name": "Liothyronine (L-T3)",
          "type": "DRUG"
        },
        {
          "name": "Bevacizumab",
          "type": "DRUG"
        },
        {
          "name": "Irinotecan",
          "type": "DRUG"
        },
        {
          "name": "Temozolomide (TMZ)",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sabine Mueller, MD, PhD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Year",
        "maximum_age": "25 Years",
        "sex": "ALL",
        "summary": "1 Year to 25 Years"
      },
      "enrollment_count": 69,
      "start_date": "2026-08-21",
      "completion_date": "2031-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-24",
      "last_synced_at": "2026-09-26T03:02:28.409Z",
      "location_count": 2,
      "location_summary": "San Francisco, California • Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07346157"
    },
    {
      "nct_id": "NCT03841617",
      "title": "The Use of 124-I-PET/CT Whole Body and Lesional Dosimetry in Differentiated Thyroid Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Thyrogen",
          "type": "DRUG"
        },
        {
          "name": "I-131",
          "type": "RADIATION"
        },
        {
          "name": "I-124",
          "type": "RADIATION"
        },
        {
          "name": "Thyroid hormone withdrawal",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION",
        "OTHER"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "90 Years",
        "sex": "ALL",
        "summary": "18 Years to 90 Years"
      },
      "enrollment_count": 30,
      "start_date": "2019-07-29",
      "completion_date": "2035-11-01",
      "has_results": false,
      "last_update_posted_date": "2026-09-09",
      "last_synced_at": "2026-09-26T03:02:28.409Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03841617"
    },
    {
      "nct_id": "NCT00001730",
      "title": "Study of Radioiodine (131-I) Uptake Following Administration of Thyrogen and Hypothyroid States During Thyroid Hormone Withdrawal.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Hypothyroidism",
        "Thyroid Neoplasms"
      ],
      "interventions": [
        {
          "name": "Thyrogen",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "ALL",
        "summary": "Not listed"
      },
      "enrollment_count": 20,
      "start_date": "1997-12",
      "completion_date": "2000-04",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-09-26T03:02:28.409Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00001730"
    },
    {
      "nct_id": "NCT02947399",
      "title": "Comparison of I-124 and I-131 Radiopharmacokinetics in DTC Patients With Thyroid Hormone Withdrawal",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Radioactive Iodine 124",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "Medstar Health 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": 16,
      "start_date": "2008-11",
      "completion_date": "2018-10",
      "has_results": false,
      "last_update_posted_date": "2018-11-01",
      "last_synced_at": "2026-09-26T03:02:28.409Z",
      "location_count": 1,
      "location_summary": "Washington D.C., District of Columbia",
      "locations": [
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02947399"
    },
    {
      "nct_id": "NCT01441154",
      "title": "Metabolic Effects of Synthetic Thyroid Hormone for Thyroid Cancer Treatment",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Malignant Struma Ovarii",
        "Papillary Thyroid Cancer",
        "Hurthle Cell Thyroid Cancer",
        "Follicular Thyroid Cancer",
        "Tall Cell Variant Thyroid Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 16,
      "start_date": "2011-09-20",
      "completion_date": "2013-12-12",
      "has_results": false,
      "last_update_posted_date": "2020-09-28",
      "last_synced_at": "2026-09-26T03:02:28.409Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01441154"
    },
    {
      "nct_id": "NCT04495985",
      "title": "CASE 1320: RAI Uptake and Serum Prolactin in Thyroid Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Thyroid Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "The Cleveland Clinic",
      "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": 39,
      "start_date": "2020-07-14",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2026-01-28",
      "last_synced_at": "2026-09-26T03:02:28.409Z",
      "location_count": 1,
      "location_summary": "Cleveland, Ohio",
      "locations": [
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04495985"
    },
    {
      "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": "2026-09-26T03:02:28.409Z",
      "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"
    }
  ]
}