{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Malignant+Neoplasm+of+Unknown+Primary&page=2",
    "query": {
      "condition": "Malignant Neoplasm of Unknown Primary",
      "page": 2
    },
    "page_size": 10
  },
  "pagination": {
    "page": 2,
    "page_size": 10,
    "total_count": 10,
    "total_pages": 1,
    "next_page_url": null,
    "previous_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Malignant+Neoplasm+of+Unknown+Primary&page=1&page_size=10"
  },
  "source": "remote",
  "last_synced_at": "2026-06-25T16:08:42.561Z",
  "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": "NCT03896958",
      "title": "The PIONEER Initiative: Precision Insights On N-of-1 Ex Vivo Effectiveness Research Based on Individual Tumor Ownership (Precision Oncology)",
      "overall_status": "UNKNOWN",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cancer, All Types",
        "Cancer of Liver",
        "Cancer of Stomach",
        "Cancer of Head and Neck",
        "Cancer of Rectum",
        "Cancer of Kidney",
        "Cancer of Esophagus",
        "Cancer of Colon",
        "Cancer Skin",
        "Cancer of Cervix",
        "Cancer, Metastatic",
        "Cancer of Larynx",
        "Cancer of Neck",
        "Cancer of Lung",
        "Cancer of Brain and Nervous System",
        "Cancer of Vulva, Disseminated",
        "Cancer of Pancreas",
        "Sarcoma",
        "GIST",
        "Small-cell Lung Cancer",
        "Adenocarcinoma Lung",
        "Cancer of Prostate",
        "Cancer, Advanced",
        "Adrenal Cancer",
        "Testicular Cancer",
        "Uterine Cancer",
        "Bronchoalveolar Cell Lung Cancer",
        "Cancer Unknown Primary",
        "Glioblastoma Multiforme",
        "Oligodendroglioma",
        "Breast Cancer",
        "Renal Cell Carcinoma",
        "Hepatocellular Carcinoma",
        "Cholangiocarcinoma",
        "Squamous Cell Carcinoma",
        "Transitional Cell Carcinoma",
        "Cancer, Other",
        "Cancer, Anal",
        "Melanoma",
        "Cancer, Bile Duct",
        "Cancer, Bladder",
        "Cancer Cords Vocal",
        "Cancers Cell Neuroendocrine",
        "Cancer Differentiated Poorly",
        "Cancer, Anaplastic Thyroid"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "SpeciCare",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "1 Month",
        "maximum_age": "99 Years",
        "sex": "ALL",
        "summary": "1 Month to 99 Years"
      },
      "enrollment_count": 1000,
      "start_date": "2019-03-21",
      "completion_date": "2024-03-12",
      "has_results": false,
      "last_update_posted_date": "2020-12-04",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 1,
      "location_summary": "Gainesville, Georgia",
      "locations": [
        {
          "city": "Gainesville",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03896958"
    },
    {
      "nct_id": "NCT00047125",
      "title": "Radiation Therapy in Treating Patients With Metastases to the Lymph Nodes in the Neck From an Unknown Primary Tumor",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Carcinoma of Unknown Primary"
      ],
      "interventions": [
        {
          "name": "radiation therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "European Organisation for Research and Treatment of Cancer - EORTC",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 120 Years · Female only"
      },
      "enrollment_count": 600,
      "start_date": "2002-07",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2018-07-09",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 237,
      "location_summary": "Birmingham, Alabama • Huntsville, Alabama • Mobile, Alabama + 180 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Montgomery",
          "state": "Alabama"
        },
        {
          "city": "Tuscaloosa",
          "state": "Alabama"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00047125"
    },
    {
      "nct_id": "NCT00357630",
      "title": "Gemcitabine in Treating Patients With Metastatic Cancer of Unknown Primary",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Carcinoma of Unknown Primary",
        "Pain"
      ],
      "interventions": [
        {
          "name": "gemcitabine hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "quality-of-life assessment",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE"
      ],
      "sponsor": "Eastern Cooperative Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "120 Years",
        "sex": "ALL",
        "summary": "18 Years to 120 Years"
      },
      "enrollment_count": 52,
      "start_date": "2006-06",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2020-11-02",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 37,
      "location_summary": "Chicago, Illinois • Decatur, Illinois • Hinsdale, Illinois + 24 more",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Chicago",
          "state": "Illinois"
        },
        {
          "city": "Decatur",
          "state": "Illinois"
        },
        {
          "city": "Hinsdale",
          "state": "Illinois"
        },
        {
          "city": "Springfield",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00357630"
    },
    {
      "nct_id": "NCT00003867",
      "title": "Irinotecan and Capecitabine in Treating Patients With Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "capecitabine",
          "type": "DRUG"
        },
        {
          "name": "irinotecan hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Montefiore Medical Center",
      "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": 30,
      "start_date": "1999-03",
      "completion_date": "2003-03",
      "has_results": false,
      "last_update_posted_date": "2018-09-10",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 1,
      "location_summary": "The Bronx, New York",
      "locations": [
        {
          "city": "The Bronx",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00003867"
    },
    {
      "nct_id": "NCT00014456",
      "title": "Combination Chemotherapy Plus Filgrastim in Treating Patients With Advanced Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Bladder Cancer",
        "Breast Cancer",
        "Carcinoma of Unknown Primary",
        "Esophageal Cancer",
        "Gastric Cancer",
        "Head and Neck Cancer",
        "Lung Cancer",
        "Melanoma (Skin)",
        "Ovarian Cancer",
        "Pancreatic Cancer",
        "Prostate Cancer",
        "Sarcoma"
      ],
      "interventions": [
        {
          "name": "filgrastim",
          "type": "BIOLOGICAL"
        },
        {
          "name": "docetaxel",
          "type": "DRUG"
        },
        {
          "name": "gemcitabine hydrochloride",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "DRUG"
      ],
      "sponsor": "Dartmouth-Hitchcock Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 35,
      "start_date": "2000-03",
      "completion_date": "2005-10",
      "has_results": false,
      "last_update_posted_date": "2013-08-28",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 1,
      "location_summary": "Lebanon, New Hampshire",
      "locations": [
        {
          "city": "Lebanon",
          "state": "New Hampshire"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00014456"
    },
    {
      "nct_id": "NCT05461430",
      "title": "Mass Response of Tumor Cells as a Biomarker for Rapid Therapy Guidance (TraveraRTGx)",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Pleural Effusion, Malignant",
        "Ascites, Malignant",
        "Carcinoma",
        "Carcinoma, Hepatocellular",
        "Carcinoma, Renal Cell",
        "Carcinoma, Renal",
        "Carcinoma, Small Cell",
        "Carcinoma, Non-Small-Cell Lung",
        "Carcinoma, Pancreatic Ductal",
        "Carcinoma, Neuroendocrine",
        "Carcinoma, Thymic",
        "Carcinoma, Pancreatic",
        "Carcinoma Breast",
        "Carcinoma, Ovarian",
        "Carcinoma Bladder",
        "Carcinoma of Unknown Primary",
        "Carcinoma of the Head and Neck",
        "Carcinoma of the Oropharynx",
        "Carcinoma of the Larynx",
        "Carcinoma of the Bladder",
        "Carcinoma of Esophagus",
        "Carcinoma of the Nasopharynx",
        "Carcinoma of the Penis",
        "Carcinoma of the Cervix",
        "Carcinoma of the Anus",
        "Carcinoma of the Vulva",
        "Carcinoma of the Appendix",
        "Carcinoma of the Oral Cavity",
        "Cholangiocarcinoma",
        "Melanoma",
        "Mesothelioma",
        "Pancreatic Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Travera Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 72,
      "start_date": "2022-07-15",
      "completion_date": "2026-03-23",
      "has_results": false,
      "last_update_posted_date": "2026-04-13",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 1,
      "location_summary": "Oakland, California",
      "locations": [
        {
          "city": "Oakland",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05461430"
    },
    {
      "nct_id": "NCT00005842",
      "title": "Trastuzumab Plus R115777 in Treating Patients With Advanced or Metastatic Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Cancer"
      ],
      "interventions": [
        {
          "name": "trastuzumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "tipifarnib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL",
        "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": 24,
      "start_date": "2000-06",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2013-02-11",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 2,
      "location_summary": "Fort Sam Houston, Texas • San Antonio, Texas",
      "locations": [
        {
          "city": "Fort Sam Houston",
          "state": "Texas"
        },
        {
          "city": "San Antonio",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00005842"
    },
    {
      "nct_id": "NCT00193596",
      "title": "Gemcitabine/Irinotecan/ZD1839 vs Paclitaxel/Carboplatin/Etoposide/ZD1839 in Carcinoma of Unknown Primary Site",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Neoplasms, Unknown Primary"
      ],
      "interventions": [
        {
          "name": "Etoposide",
          "type": "DRUG"
        },
        {
          "name": "Gemcitabine",
          "type": "DRUG"
        },
        {
          "name": "Irinotecan",
          "type": "DRUG"
        },
        {
          "name": "Paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "SCRI Development Innovations, LLC",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 198,
      "start_date": "2003-09",
      "completion_date": "2009-06",
      "has_results": true,
      "last_update_posted_date": "2013-05-03",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 31,
      "location_summary": "Anniston, Alabama • Huntsville, Alabama • Mobile, Alabama + 28 more",
      "locations": [
        {
          "city": "Anniston",
          "state": "Alabama"
        },
        {
          "city": "Huntsville",
          "state": "Alabama"
        },
        {
          "city": "Mobile",
          "state": "Alabama"
        },
        {
          "city": "Jonesboro",
          "state": "Arkansas"
        },
        {
          "city": "Beverly Hills",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00193596"
    },
    {
      "nct_id": "NCT05024968",
      "title": "Sintilimab in Cancer of Unknown Primary",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Cancer of Unknown Primary Site"
      ],
      "interventions": [
        {
          "name": "Sintilimab",
          "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": 10,
      "start_date": "2021-08-26",
      "completion_date": "2025-04-03",
      "has_results": true,
      "last_update_posted_date": "2026-02-25",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05024968"
    },
    {
      "nct_id": "NCT00873119",
      "title": "Belinostat, Carboplatin and Paclitaxel (BelCaP) Compared to Carboplatin and Paclitaxel in Patients With Cancer of Unknown Primary",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Carcinoma of Unknown Primary"
      ],
      "interventions": [
        {
          "name": "belinostat, carboplatin, paclitaxel",
          "type": "DRUG"
        },
        {
          "name": "carboplatin, paclitaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Valerio Therapeutics",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 89,
      "start_date": "2009-02",
      "completion_date": "2012-12",
      "has_results": true,
      "last_update_posted_date": "2015-07-28",
      "last_synced_at": "2026-06-25T16:08:42.561Z",
      "location_count": 11,
      "location_summary": "Fort Myers, Florida • Marietta, Georgia • Baton Rouge, Louisiana + 8 more",
      "locations": [
        {
          "city": "Fort Myers",
          "state": "Florida"
        },
        {
          "city": "Marietta",
          "state": "Georgia"
        },
        {
          "city": "Baton Rouge",
          "state": "Louisiana"
        },
        {
          "city": "Bethesda",
          "state": "Maryland"
        },
        {
          "city": "Kansas City",
          "state": "Missouri"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00873119"
    }
  ]
}