{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Merkel+Cell+Carcinoma%2C+Stage+IV",
    "query": {
      "condition": "Merkel Cell Carcinoma, Stage IV"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 25,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Merkel+Cell+Carcinoma%2C+Stage+IV&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-07-21T10:50:56.630Z",
  "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": "NCT02584829",
      "title": "Localized Radiation Therapy or Recombinant Interferon Beta and Avelumab With or Without Cellular Adoptive Immunotherapy in Treating Patients With Metastatic Merkel Cell Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Merkel Cell Polyomavirus Infection",
        "Stage IV Merkel Cell Carcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Avelumab",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "MCPyV TAg-specific Polyclonal Autologous CD8-positive T Cells",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Recombinant Interferon Beta",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "BIOLOGICAL",
        "RADIATION"
      ],
      "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": 8,
      "start_date": "2015-11-06",
      "completion_date": "2018-12-18",
      "has_results": true,
      "last_update_posted_date": "2022-03-22",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02584829"
    },
    {
      "nct_id": "NCT05947500",
      "title": "Testing the Combination of Two Anticancer Drugs M1774 (Tuvusertib) and Avelumab to Evaluate Their Safety and Effectiveness in Treating Merkel Cell Skin Cancer, MATRiX Trial",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Clinical Stage III Cutaneous Merkel Cell Carcinoma AJCC v8",
        "Clinical Stage IV Cutaneous Merkel Cell Carcinoma AJCC v8",
        "Locally Advanced Merkel Cell Carcinoma",
        "Metastatic Merkel Cell Carcinoma",
        "Refractory Merkel Cell Carcinoma",
        "Unresectable Merkel Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Avelumab",
          "type": "DRUG"
        },
        {
          "name": "Biopsy Procedure",
          "type": "PROCEDURE"
        },
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Computed Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Magnetic Resonance Imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "Positron Emission Tomography",
          "type": "PROCEDURE"
        },
        {
          "name": "Tuvusertib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "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": 50,
      "start_date": "2024-05-21",
      "completion_date": "2028-01-01",
      "has_results": false,
      "last_update_posted_date": "2026-07-10",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 50,
      "location_summary": "Irvine, California • La Jolla, California • Los Angeles, California + 39 more",
      "locations": [
        {
          "city": "Irvine",
          "state": "California"
        },
        {
          "city": "La Jolla",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05947500"
    },
    {
      "nct_id": "NCT03747484",
      "title": "Gene-Modified Immune Cells (FH-MCVA2TCR) in Treating Patients With Metastatic or Unresectable Merkel Cell Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Other Skin"
      ],
      "interventions": [
        {
          "name": "Autologous MCPyV-specific HLA-A02-restricted TCR-transduced CD4+ and CD8+ T-cells FH-MCVA2TCR",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Avelumab",
          "type": "DRUG"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Interferon Gamma-1b",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "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": 7,
      "start_date": "2019-07-03",
      "completion_date": "2024-01-09",
      "has_results": true,
      "last_update_posted_date": "2025-03-06",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03747484"
    },
    {
      "nct_id": "NCT04902040",
      "title": "Plinabulin in Combination With Radiation/Immunotherapy in Patients With Select Advanced Cancers After Progression on PD-1 or PD-L1 Targeted Antibodies",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Advanced Bladder Carcinoma",
        "Advanced Lung Non-Small Cell Carcinoma",
        "Advanced Malignant Solid Neoplasm",
        "Advanced Melanoma",
        "Advanced Merkel Cell Carcinoma",
        "Advanced Renal Cell Carcinoma",
        "Clinical Stage III Cutaneous Melanoma AJCC v8",
        "Clinical Stage III Merkel Cell Carcinoma AJCC v8",
        "Clinical Stage IV Cutaneous Melanoma AJCC v8",
        "Clinical Stage IV Merkel Cell Carcinoma AJCC v8",
        "Pathologic Stage III Cutaneous Melanoma AJCC v8",
        "Pathologic Stage III Merkel Cell Carcinoma AJCC v8",
        "Pathologic Stage IIIA Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIA Merkel Cell Carcinoma AJCC v8",
        "Pathologic Stage IIIB Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIIB Merkel Cell Carcinoma AJCC v8",
        "Pathologic Stage IIIC Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IIID Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IV Cutaneous Melanoma AJCC v8",
        "Pathologic Stage IV Merkel Cell Carcinoma AJCC v8",
        "Stage III Bladder Cancer AJCC v8",
        "Stage III Lung Cancer AJCC v8",
        "Stage III Renal Cell Cancer AJCC v8",
        "Stage IIIA Bladder Cancer AJCC v8",
        "Stage IIIA Lung Cancer AJCC v8",
        "Stage IIIB Bladder Cancer AJCC v8",
        "Stage IIIB Lung Cancer AJCC v8",
        "Stage IIIC Lung Cancer AJCC v8",
        "Stage IV Bladder Cancer AJCC v8",
        "Stage IV Lung Cancer AJCC v8",
        "Stage IV Renal Cell Cancer AJCC v8",
        "Stage IVA Bladder Cancer AJCC v8",
        "Stage IVA Lung Cancer AJCC v8",
        "Stage IVB Bladder Cancer AJCC v8",
        "Stage IVB Lung Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Atezolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Avelumab",
          "type": "DRUG"
        },
        {
          "name": "Durvalumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Nivolumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Plinabulin",
          "type": "DRUG"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "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": 19,
      "start_date": "2021-04-14",
      "completion_date": "2025-02-27",
      "has_results": true,
      "last_update_posted_date": "2026-04-30",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04902040"
    },
    {
      "nct_id": "NCT02643303",
      "title": "A Study of Tremelimumab and IV Durvalumab Plus Poly-ICLC in Subjects With Biopsy-accessible Cancers",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Head and Neck Squamous Cell Carcinoma",
        "Breast Cancer",
        "Sarcoma",
        "Merkel Cell Carcinoma",
        "Cutaneous T-Cell Lymphoma",
        "Melanoma",
        "Renal Cancer",
        "Bladder Cancer",
        "Prostate Cancer",
        "Testicular Cancer",
        "Solid Tumor"
      ],
      "interventions": [
        {
          "name": "Durvalumab",
          "type": "DRUG"
        },
        {
          "name": "Tremelimumab",
          "type": "DRUG"
        },
        {
          "name": "Poly-ICLC",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Ludwig Institute for Cancer Research",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 58,
      "start_date": "2016-12-28",
      "completion_date": "2022-02-23",
      "has_results": true,
      "last_update_posted_date": "2022-12-02",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 7,
      "location_summary": "Atlanta, Georgia • Lebanon, New Hampshire • Buffalo, New York + 4 more",
      "locations": [
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        },
        {
          "city": "Buffalo",
          "state": "New York"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Cleveland",
          "state": "Ohio"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02643303"
    },
    {
      "nct_id": "NCT00655655",
      "title": "Everolimus and Vatalanib in Treating Patients With Advanced Solid Tumors",
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      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Gastrinoma",
        "Glucagonoma",
        "Insulinoma",
        "Metastatic Gastrointestinal Carcinoid Tumor",
        "Metastatic Pheochromocytoma",
        "Pancreatic Polypeptide Tumor",
        "Recurrent Gastrointestinal Carcinoid Tumor",
        "Recurrent Islet Cell Carcinoma",
        "Recurrent Melanoma",
        "Recurrent Neuroendocrine Carcinoma of the Skin",
        "Recurrent Non-small Cell Lung Cancer",
        "Recurrent Pheochromocytoma",
        "Recurrent Renal Cell Cancer",
        "Somatostatinoma",
        "Stage III Neuroendocrine Carcinoma of the Skin",
        "Stage IV Melanoma",
        "Stage IV Non-small Cell Lung Cancer",
        "Stage IV Renal Cell Cancer",
        "Thyroid Gland Medullary Carcinoma",
        "Unspecified Adult Solid Tumor, Protocol Specific"
      ],
      "interventions": [
        {
          "name": "everolimus",
          "type": "DRUG"
        },
        {
          "name": "vatalanib",
          "type": "DRUG"
        },
        {
          "name": "pharmacological study",
          "type": "OTHER"
        },
        {
          "name": "laboratory biomarker analysis",
          "type": "OTHER"
        },
        {
          "name": "dynamic contrast-enhanced magnetic resonance imaging",
          "type": "PROCEDURE"
        },
        {
          "name": "ultrasound imaging",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "PROCEDURE"
      ],
      "sponsor": "Mayo Clinic",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 96,
      "start_date": "2004-12",
      "completion_date": "2018-01-11",
      "has_results": false,
      "last_update_posted_date": "2024-08-21",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 1,
      "location_summary": "Rochester, Minnesota",
      "locations": [
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00655655"
    },
    {
      "nct_id": "NCT04616248",
      "title": "In Situ Immunomodulation With CDX-301, Radiation Therapy, CDX-1140 and Poly-ICLC in Patients w/ Unresectable and Metastatic Solid Tumors",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Anatomic Stage IV Breast Cancer AJCC v8",
        "Metastatic Breast Carcinoma",
        "Prognostic Stage IV Breast Cancer AJCC v8",
        "Unresectable Breast Carcinoma",
        "Metastatic Melanoma",
        "Unresectable Melanoma",
        "Cutaneous Squamous Cell Carcinoma",
        "Merkel Cell Carcinoma",
        "Soft Tissue Sarcoma",
        "Bone Sarcoma",
        "Sarcoma,Soft Tissue",
        "Sarcoma of Bone",
        "Basal Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Anti-CD40 Agonist Monoclonal Antibody CDX-1140",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Poly ICLC",
          "type": "DRUG"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Recombinant Flt3 Ligand",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Pembrolizumab",
          "type": "DRUG"
        },
        {
          "name": "Tocilizumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "University of Southern California",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 14,
      "start_date": "2023-01-09",
      "completion_date": "2028-01-09",
      "has_results": false,
      "last_update_posted_date": "2026-06-18",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 2,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04616248"
    },
    {
      "nct_id": "NCT01758458",
      "title": "Viral Oncoprotein Targeted Autologous T Cell Therapy for Merkel Cell Carcinoma",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Merkel Cell Carcinoma",
        "Stage IV Merkel Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Aldesleukin",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "MCPyV TAg-specific Polyclonal Autologous CD8-positive T Cells",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Recombinant Interferon Beta",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "OTHER",
        "RADIATION"
      ],
      "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": 4,
      "start_date": "2013-02",
      "completion_date": "2016-05",
      "has_results": false,
      "last_update_posted_date": "2017-04-19",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01758458"
    },
    {
      "nct_id": "NCT02465957",
      "title": "QUILT-3.009: Patients With Stage III (IIIB) or Stage (IV) Merkel Cell Carcinoma (MCC)",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Stage IIIB Merkel Cell Carcinoma",
        "Stage IV Merkel Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "aNK (NK-92)",
          "type": "BIOLOGICAL"
        },
        {
          "name": "aNK (NK-92) + N-803",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "ImmunityBio, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 7,
      "start_date": "2015-09-24",
      "completion_date": "2018-03-19",
      "has_results": true,
      "last_update_posted_date": "2024-05-02",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 3,
      "location_summary": "Chicago, Illinois • Pittsburgh, Pennsylvania • Seattle, Washington",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02465957"
    },
    {
      "nct_id": "NCT02267603",
      "title": "Pembrolizumab in Treating Patients With Advanced Merkel Cell Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Recurrent Merkel Cell Carcinoma",
        "Stage III Merkel Cell Carcinoma AJCC v7",
        "Stage IIIA Merkel Cell Carcinoma AJCC v7",
        "Stage IIIB Merkel Cell Carcinoma AJCC v7",
        "Stage IV Merkel Cell Carcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "OTHER",
        "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": 50,
      "start_date": "2014-11-25",
      "completion_date": "2021-12-15",
      "has_results": true,
      "last_update_posted_date": "2023-07-05",
      "last_synced_at": "2026-07-21T10:50:56.630Z",
      "location_count": 13,
      "location_summary": "Palo Alto, California • San Francisco, California • New Haven, Connecticut + 9 more",
      "locations": [
        {
          "city": "Palo Alto",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02267603"
    }
  ]
}