{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Head+and+Neck+Cancer&page=4",
    "query": {
      "condition": "Refractory Head and Neck Cancer",
      "page": 4
    },
    "page_size": 10
  },
  "pagination": {
    "page": 4,
    "page_size": 10,
    "total_count": 166,
    "total_pages": 17,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Head+and+Neck+Cancer&page=5&page_size=10",
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Refractory+Head+and+Neck+Cancer&page=3&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-10-02T08:45:50.034Z",
  "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": "NCT05795595",
      "title": "A Safety and Efficacy Study Evaluating CTX131 in Adult Subjects With Relapsed or Refractory Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Clear Cell Renal Cell Carcinoma",
        "Cervical Carcinoma",
        "Esophageal Carcinoma",
        "Pancreatic Adenocarcinoma",
        "Malignant Pleural Mesothelioma"
      ],
      "interventions": [
        {
          "name": "CTX131",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "CRISPR Therapeutics AG",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 19,
      "start_date": "2023-03-13",
      "completion_date": "2025-09-18",
      "has_results": false,
      "last_update_posted_date": "2025-11-26",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 7,
      "location_summary": "Duarte, California • Chicago, Illinois • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05795595"
    },
    {
      "nct_id": "NCT03740100",
      "title": "Single-arm Study With Bimiralisib in Patients With HNSCC Harboring NOTCH1 Loss of Function Mutations",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "HNSCC"
      ],
      "interventions": [
        {
          "name": "Bimiralisib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 8,
      "start_date": "2019-01-25",
      "completion_date": "2020-12-09",
      "has_results": true,
      "last_update_posted_date": "2023-07-14",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03740100"
    },
    {
      "nct_id": "NCT03427411",
      "title": "M7824 in Subjects With HPV Associated Malignancies",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Human Papilloma Virus",
        "Cervical Cancer",
        "Oropharyngeal Cancer",
        "Anal Cancer",
        "Vaginal or Penile Cancer"
      ],
      "interventions": [
        {
          "name": "M7824",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "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": 57,
      "start_date": "2018-02-27",
      "completion_date": "2022-12-31",
      "has_results": true,
      "last_update_posted_date": "2023-03-28",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03427411"
    },
    {
      "nct_id": "NCT05222932",
      "title": "Oncolytic Adenovirus TILT-123 and Avelumab for Treatment of Solid Tumors Refractory to or Progressing After Anti-PD(L)1",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Melanoma",
        "Head and Neck Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "TILT-123",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Avelumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "TILT Biotherapeutics Ltd.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 15,
      "start_date": "2023-03-08",
      "completion_date": "2026-12",
      "has_results": false,
      "last_update_posted_date": "2025-08-07",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05222932"
    },
    {
      "nct_id": "NCT01413113",
      "title": "Iodine I 131 and Pazopanib Hydrochloride in Treating Patients With Recurrent and/or Metastatic Thyroid Cancer Previously Treated With Iodine I 131 That Cannot Be Removed By Surgery",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "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": "pazopanib hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "iodine I 131",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "University of Washington",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2011-12",
      "completion_date": "2015-10",
      "has_results": false,
      "last_update_posted_date": "2015-11-05",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01413113"
    },
    {
      "nct_id": "NCT01009203",
      "title": "Temsirolimus (Torisel®) and Erlotinib (Tarceva®) in Platinum-Refractory/Ineligible, Advanced, Squamous Cell Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Erlotinib",
          "type": "DRUG"
        },
        {
          "name": "Temsirolimus",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "New Mexico Cancer Research Alliance",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 13,
      "start_date": "2009-12",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2015-08-10",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 2,
      "location_summary": "Albuquerque, New Mexico",
      "locations": [
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        },
        {
          "city": "Albuquerque",
          "state": "New Mexico"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01009203"
    },
    {
      "nct_id": "NCT01638533",
      "title": "Romidepsin in Treating Patients With Lymphoma, Chronic Lymphocytic Leukemia, or Solid Tumors With Liver Dysfunction",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Glioma",
        "Hematopoietic and Lymphoid Cell Neoplasm",
        "Lymphoma",
        "Metastatic Malignant Solid Neoplasm",
        "Neuroendocrine Neoplasm",
        "Recurrent Adult Soft Tissue Sarcoma",
        "Recurrent Bladder Carcinoma",
        "Recurrent Breast Carcinoma",
        "Recurrent Chronic Lymphocytic Leukemia",
        "Recurrent Colorectal Carcinoma",
        "Recurrent Head and Neck Carcinoma",
        "Recurrent Lung Carcinoma",
        "Recurrent Malignant Solid Neoplasm",
        "Recurrent Melanoma",
        "Recurrent Pancreatic Carcinoma",
        "Recurrent Primary Cutaneous T-Cell Non-Hodgkin Lymphoma",
        "Recurrent Prostate Carcinoma",
        "Recurrent Renal Cell Carcinoma",
        "Recurrent Thyroid Gland Carcinoma",
        "Refractory Chronic Lymphocytic Leukemia",
        "Refractory Mature T-Cell and NK-Cell Non-Hodgkin Lymphoma",
        "Refractory Primary Cutaneous T-Cell Non-Hodgkin Lymphoma",
        "Stage III Breast Cancer AJCC v7",
        "Stage III Colorectal Cancer AJCC v7",
        "Stage III Cutaneous Melanoma AJCC v7",
        "Stage III Lung Cancer AJCC v7",
        "Stage III Pancreatic Cancer AJCC v6 and v7",
        "Stage III Prostate Cancer AJCC v7",
        "Stage III Renal Cell Cancer AJCC v7",
        "Stage III Soft Tissue Sarcoma AJCC v7",
        "Stage IIIA Breast Cancer AJCC v7",
        "Stage IIIA Colorectal Cancer AJCC v7",
        "Stage IIIA Cutaneous Melanoma AJCC v7",
        "Stage IIIB Breast Cancer AJCC v7",
        "Stage IIIB Colorectal Cancer AJCC v7",
        "Stage IIIB Cutaneous Melanoma AJCC v7",
        "Stage IIIC Breast Cancer AJCC v7",
        "Stage IIIC Colorectal Cancer AJCC v7",
        "Stage IIIC Cutaneous Melanoma AJCC v7",
        "Stage IV Breast Cancer AJCC v6 and v7",
        "Stage IV Colorectal Cancer AJCC v7",
        "Stage IV Cutaneous Melanoma AJCC v6 and v7",
        "Stage IV Lung Cancer AJCC v7",
        "Stage IV Pancreatic Cancer AJCC v6 and v7",
        "Stage IV Prostate Cancer AJCC v7",
        "Stage IV Renal Cell Cancer AJCC v7",
        "Stage IV Soft Tissue Sarcoma AJCC v7",
        "Stage IVA Colorectal Cancer AJCC v7",
        "Stage IVB Colorectal Cancer AJCC v7",
        "Unresectable Solid Neoplasm"
      ],
      "interventions": [
        {
          "name": "Pharmacological Study",
          "type": "OTHER"
        },
        {
          "name": "Romidepsin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "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": 37,
      "start_date": "2012-08-03",
      "completion_date": "2020-09-01",
      "has_results": false,
      "last_update_posted_date": "2025-02-07",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 11,
      "location_summary": "Duarte, California • Sacramento, California • Atlanta, Georgia + 8 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Sacramento",
          "state": "California"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01638533"
    },
    {
      "nct_id": "NCT00525135",
      "title": "Valproic Acid (Depakote ER) in Patients With Advanced Thyroid Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Cancer"
      ],
      "interventions": [
        {
          "name": "Valproic Acid",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, San Francisco",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 5,
      "start_date": "2007-08",
      "completion_date": "2009-03",
      "has_results": true,
      "last_update_posted_date": "2015-02-03",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00525135"
    },
    {
      "nct_id": "NCT02475213",
      "title": "Safety Study of Enoblituzumab (MGA271) in Combination With Pembrolizumab or MGA012 in Refractory Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Melanoma",
        "Head and Neck Cancer",
        "Non Small Cell Lung Cancer",
        "Urothelial Carcinoma"
      ],
      "interventions": [
        {
          "name": "Enoblituzumab Schedule 1",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Enoblituzumab Schedule 2",
          "type": "BIOLOGICAL"
        },
        {
          "name": "retifanlimab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "MacroGenics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 146,
      "start_date": "2015-07",
      "completion_date": "2021-08-18",
      "has_results": true,
      "last_update_posted_date": "2025-08-11",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 20,
      "location_summary": "Scottsdale, Arizona • Newark, Delaware • Jacksonville, Florida + 17 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Newark",
          "state": "Delaware"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Louisville",
          "state": "Kentucky"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02475213"
    },
    {
      "nct_id": "NCT05733013",
      "title": "A Study to Collect Information About the Use of Redifferentiating Medications as a Standard Treatment for Thyroid Cancer",
      "overall_status": "RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Thyroid Cancer",
        "Thyroid",
        "Refractory Thyroid Cancer"
      ],
      "interventions": [
        {
          "name": "Surveillance Visit",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "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": 100,
      "start_date": "2023-02-07",
      "completion_date": "2028-02-07",
      "has_results": false,
      "last_update_posted_date": "2026-04-27",
      "last_synced_at": "2026-10-02T08:45:50.034Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05733013"
    }
  ]
}