{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Neck+Squamous+Cell+Carcinoma+of+Unknown+Primary",
    "query": {
      "condition": "Neck Squamous Cell Carcinoma of Unknown Primary"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 36,
    "total_pages": 4,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Neck+Squamous+Cell+Carcinoma+of+Unknown+Primary&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-06-10T23:02:34.850Z",
  "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": "NCT00588770",
      "title": "Chemotherapy With or Without Bevacizumab in Treating Patients With Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Neck Squamous Cell Carcinoma of Unknown Primary",
        "Recurrent Hypopharyngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Verrucous Carcinoma",
        "Recurrent Lip and Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Neck Squamous Cell Carcinoma of Unknown Primary",
        "Recurrent Oral Cavity Verrucous Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Recurrent Salivary Gland Carcinoma",
        "Recurrent Sinonasal Squamous Cell Carcinoma",
        "Salivary Gland Squamous Cell Carcinoma",
        "Stage IV Hypopharyngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IV Major Salivary Gland Cancer AJCC v7",
        "Stage IVA Laryngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IVA Laryngeal Verrucous Carcinoma AJCC v7",
        "Stage IVA Lip and Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7",
        "Stage IVA Major Salivary Gland Cancer AJCC v7",
        "Stage IVA Oral Cavity Cancer AJCC v6 and v7",
        "Stage IVA Oropharyngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IVA Sinonasal Squamous Cell Carcinoma AJCC v7",
        "Stage IVB Laryngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IVB Laryngeal Verrucous Carcinoma AJCC v7",
        "Stage IVB Lip and Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7",
        "Stage IVB Major Salivary Gland Cancer AJCC v7",
        "Stage IVB Oral Cavity Cancer AJCC v6 and v7",
        "Stage IVB Oropharyngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IVB Sinonasal Squamous Cell Carcinoma AJCC v7",
        "Stage IVC Laryngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IVC Laryngeal Verrucous Carcinoma AJCC v7",
        "Stage IVC Lip and Oral Cavity Squamous Cell Carcinoma AJCC v6 and v7",
        "Stage IVC Major Salivary Gland Cancer AJCC v7",
        "Stage IVC Oral Cavity Cancer AJCC v6 and v7",
        "Stage IVC Oropharyngeal Squamous Cell Carcinoma AJCC v7",
        "Stage IVC Sinonasal Squamous Cell Carcinoma AJCC v7",
        "Tongue Carcinoma"
      ],
      "interventions": [
        {
          "name": "Bevacizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Cisplatin",
          "type": "DRUG"
        },
        {
          "name": "Docetaxel",
          "type": "DRUG"
        },
        {
          "name": "Fluorouracil",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "OTHER"
      ],
      "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": 403,
      "start_date": "2008-08-08",
      "completion_date": "2027-02-20",
      "has_results": true,
      "last_update_posted_date": "2026-05-29",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 779,
      "location_summary": "Mobile, Alabama • Fairbanks, Alaska • Fort Smith, Arkansas + 473 more",
      "locations": [
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Fairbanks",
          "state": "Alaska"
        },
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00588770"
    },
    {
      "nct_id": "NCT06995508",
      "title": "Olanzapine for Managing Anorexia in Head and Neck Cancer Patients Undergoing Chemoradiation, MACRO Trial",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cancer-Associated Anorexia",
        "Head and Neck Squamous Cell Carcinoma",
        "Neck Squamous Cell Carcinoma of Unknown Primary"
      ],
      "interventions": [
        {
          "name": "Best Practice",
          "type": "OTHER"
        },
        {
          "name": "Olanzapine",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Roswell Park Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 66,
      "start_date": "2025-12-24",
      "completion_date": "2031-11-15",
      "has_results": false,
      "last_update_posted_date": "2026-02-17",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 1,
      "location_summary": "Buffalo, New York",
      "locations": [
        {
          "city": "Buffalo",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06995508"
    },
    {
      "nct_id": "NCT00499733",
      "title": "Cyclophosphamide and Cryoablation in Treating Patients With Advanced or Metastatic Epithelial Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "EARLY_PHASE1"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "cyclophosphamide",
          "type": "DRUG"
        },
        {
          "name": "Cryoablation",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE"
      ],
      "sponsor": "Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 19,
      "start_date": "2007-06",
      "completion_date": "2013-01-09",
      "has_results": false,
      "last_update_posted_date": "2019-01-18",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00499733"
    },
    {
      "nct_id": "NCT04862650",
      "title": "Cemiplimab, Low-Dose Paclitaxel and Carboplatin for the Treatment of Recurrent/Metastatic Squamous Cell Carcinoma of the Head and Neck",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Clinical Stage IV HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Metastatic Head and Neck Squamous Cell Carcinoma",
        "Metastatic Hypopharyngeal Squamous Cell Carcinoma",
        "Metastatic Laryngeal Squamous Cell Carcinoma",
        "Metastatic Oral Cavity Squamous Cell Carcinoma",
        "Metastatic Oropharyngeal Squamous Cell Carcinoma",
        "Pathologic Stage IV HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Recurrent Head and Neck Squamous Cell Carcinoma",
        "Recurrent Hypopharyngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Squamous Cell Carcinoma of Unknown Primary",
        "Stage IV Hypopharyngeal Carcinoma AJCC v8",
        "Stage IV Laryngeal Cancer AJCC v8",
        "Stage IV Lip and Oral Cavity Cancer AJCC v8",
        "Stage IVA Hypopharyngeal Carcinoma AJCC v8",
        "Stage IVA Laryngeal Cancer AJCC v8",
        "Stage IVA Lip and Oral Cavity Cancer AJCC v8",
        "Stage IVB Hypopharyngeal Carcinoma AJCC v8",
        "Stage IVB Laryngeal Cancer AJCC v8",
        "Stage IVB Lip and Oral Cavity Cancer AJCC v8",
        "Stage IVC Hypopharyngeal Carcinoma AJCC v8",
        "Stage IVC Laryngeal Cancer AJCC v8",
        "Stage IVC Lip and Oral Cavity Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Cemiplimab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "Marcelo Bonomi",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 46,
      "start_date": "2021-11-30",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-10",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04862650"
    },
    {
      "nct_id": "NCT06868433",
      "title": "TMV Vaccine Therapy Alone and With Pembrolizumab for the Treatment of Recurrent and/or Metastatic Head and Neck Squamous Cell Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Clinical Stage IV HPV-Mediated (p16-Positive) Oropharyngeal Carcinoma AJCC v8",
        "Metastatic Head and Neck Squamous Cell Carcinoma",
        "Metastatic Hypopharyngeal Squamous Cell Carcinoma",
        "Metastatic Laryngeal Squamous Cell Carcinoma",
        "Metastatic Nasopharyngeal Squamous Cell Carcinoma",
        "Metastatic Oral Cavity Squamous Cell Carcinoma",
        "Metastatic Oropharyngeal Squamous Cell Carcinoma",
        "Metastatic Sinonasal Squamous Cell Carcinoma",
        "Recurrent Head and Neck Squamous Cell Carcinoma",
        "Recurrent Hypopharyngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Nasopharyngeal Squamous Cell Carcinoma",
        "Recurrent Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Recurrent Sinonasal Squamous Cell Carcinoma",
        "Squamous Cell Carcinoma of Unknown Primary",
        "Stage IV Cutaneous Squamous Cell Carcinoma of the Head and Neck AJCC v8",
        "Stage IV Hypopharyngeal Carcinoma AJCC v8",
        "Stage IV Laryngeal Cancer AJCC v8",
        "Stage IV Lip and Oral Cavity Cancer AJCC v8",
        "Stage IV Nasopharyngeal Carcinoma AJCC v8",
        "Stage IV Oropharyngeal (p16-Negative) Carcinoma AJCC v8",
        "Stage IV Sinonasal Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Autologous Tumor Membrane Vesicles Vaccine",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Echocardiography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Surgical Procedure",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "PROCEDURE"
      ],
      "sponsor": "Emory University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 40,
      "start_date": "2025-05-08",
      "completion_date": "2028-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-04",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 2,
      "location_summary": "Atlanta, Georgia",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06868433"
    },
    {
      "nct_id": "NCT03422536",
      "title": "Ficlatuzumab w/wo Cetuximab in Patients w/Cetuximab-Resistant, Recurrent or Metastatic Head/Neck Squamous Cell Carcinoma",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Basaloid Carcinoma",
        "Recurrent Head and Neck Squamous Cell Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Squamous Cell Carcinoma of Unknown Primary Origin",
        "Stage IV Squamous Cell Carcinoma of the Lip and Oral Cavity",
        "Stage IV Squamous Cell Carcinoma of the Paranasal Sinus and Nasal Cavity",
        "Stage IV Nasopharyngeal Keratinizing Squamous Cell Carcinoma",
        "Stage IV Oropharyngeal Squamous Cell Carcinoma",
        "Stage IVA Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage IVA Nasal Cavity and Paranasal Sinus Squamous Cell Carcinoma",
        "Stage IVA Nasopharyngeal Keratinizing Squamous Cell Carcinoma",
        "Stage IVA Oropharyngeal Squamous Cell Carcinoma",
        "Stage IVB Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage IVB Nasal Cavity and Paranasal Sinus Squamous Cell Carcinoma",
        "Stage IVB Nasopharyngeal Keratinizing Squamous Cell Carcinoma",
        "Stage IVB Oropharyngeal Squamous Cell Carcinoma",
        "Stage IVC Lip and Oral Cavity Squamous Cell Carcinoma",
        "Stage IVC Nasal Cavity and Paranasal Sinus Squamous Cell Carcinoma",
        "Stage IVC Nasopharyngeal Keratinizing Squamous Cell Carcinoma",
        "Stage IVC Oropharyngeal Squamous Cell Carcinoma",
        "Head and Neck Cancer",
        "Oropharyngeal Cancer",
        "HNSCC",
        "Stage IV Lip and Oral Cavity Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cetuximab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Ficlatuzumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "University of Arizona",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 78,
      "start_date": "2017-12-05",
      "completion_date": "2022-04-05",
      "has_results": true,
      "last_update_posted_date": "2024-09-04",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 6,
      "location_summary": "Tucson, Arizona • New Haven, Connecticut • Tampa, Florida + 3 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03422536"
    },
    {
      "nct_id": "NCT04754321",
      "title": "Combining Immunotherapy Salvage Surgery & IORT Tx Persistent/Recurrent Head & Neck Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Head and Neck Carcinoma of Unknown Primary",
        "Locally Recurrent Head and Neck Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Pharyngeal Squamous Cell Carcinoma",
        "Resectable Head and Neck Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "External Beam Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Intraoperative Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Salvage Surgery",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "RADIATION",
        "BIOLOGICAL",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Ohio State University Comprehensive 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": 45,
      "start_date": "2022-05-12",
      "completion_date": "2026-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-02-02",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 1,
      "location_summary": "Columbus, Ohio",
      "locations": [
        {
          "city": "Columbus",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04754321"
    },
    {
      "nct_id": "NCT05576974",
      "title": "A Phase 2a, Single-dose, Open-label Study to Evaluate Diagnostic Performance and Safety of Pegsitacianine, an Intraoperative Fluorescence Imaging Agent for the Detection of Cancer, in Patients With Unknown Primary Head and Neck Cancer (ILLUMINATE STUDY)",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Cancer",
        "Unknown Primary Cancer",
        "Head and Neck Squamous Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Pegsitacianine",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Texas Southwestern Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "18 Years to 99 Years"
      },
      "enrollment_count": 120,
      "start_date": "2024-04-17",
      "completion_date": "2027-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-04-14",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 1,
      "location_summary": "Dallas, Texas",
      "locations": [
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05576974"
    },
    {
      "nct_id": "NCT06589804",
      "title": "Testing the Addition of Anti-Cancer Drug, Cetuximab, to Standard of Care Treatment (Pembrolizumab) for Returning or Spreading Head and Neck Cancer After Previous Treatment",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Metastatic Head and Neck Squamous Cell Carcinoma",
        "Metastatic Hypopharyngeal Squamous Cell Carcinoma",
        "Metastatic Laryngeal Squamous Cell Carcinoma",
        "Metastatic Oral Cavity Squamous Cell Carcinoma",
        "Metastatic Oropharyngeal Squamous Cell Carcinoma",
        "Recurrent Head and Neck Squamous Cell Carcinoma",
        "Recurrent Hypopharyngeal Squamous Cell Carcinoma",
        "Recurrent Laryngeal Squamous Cell Carcinoma",
        "Recurrent Neck Squamous Cell Carcinoma of Unknown Primary",
        "Recurrent Oral Cavity Squamous Cell Carcinoma",
        "Recurrent Oropharyngeal Squamous Cell Carcinoma",
        "Refractory Head and Neck Squamous Cell Carcinoma",
        "Refractory Hypopharyngeal Squamous Cell Carcinoma",
        "Refractory Laryngeal Squamous Cell Carcinoma",
        "Refractory Oral Cavity Squamous Cell Carcinoma",
        "Refractory Oropharyngeal Squamous Cell Carcinoma",
        "Stage IV Head and Neck Cutaneous Squamous Cell Carcinoma AJCC v8",
        "Stage IV Hypopharyngeal Carcinoma AJCC v8",
        "Stage IV Laryngeal Cancer AJCC v8",
        "Stage IV Lip and Oral Cavity Cancer AJCC v8",
        "Stage IV Oropharyngeal (p16-Negative) Carcinoma AJCC v8"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Cetuximab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "BIOLOGICAL"
      ],
      "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": 158,
      "start_date": "2025-03-27",
      "completion_date": "2029-11-30",
      "has_results": false,
      "last_update_posted_date": "2026-06-03",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 177,
      "location_summary": "Little Rock, Arkansas • Marysville, California • Palo Alto, California + 143 more",
      "locations": [
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Marysville",
          "state": "California"
        },
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        },
        {
          "city": "Colorado Springs",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06589804"
    },
    {
      "nct_id": "NCT00900302",
      "title": "OX-40 Protein Expression in the Sentinel Lymph Nodes of Patients With Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "protein expression analysis",
          "type": "GENETIC"
        },
        {
          "name": "immunohistochemistry staining method",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "GENETIC",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "OHSU Knight Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "Up to 120 Years"
      },
      "enrollment_count": 98,
      "start_date": "2005-04",
      "completion_date": "2011-03",
      "has_results": false,
      "last_update_posted_date": "2016-02-10",
      "last_synced_at": "2026-06-10T23:02:34.850Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00900302"
    }
  ]
}