{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Gonadectomy",
    "query": {
      "intervention": "Gonadectomy"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 658,
    "total_pages": 66,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Gonadectomy&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-10T07:19:48.610Z",
  "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": "NCT03419234",
      "title": "Abiraterone Acetate and Antiandrogen Therapy With or Without Cabazitaxel and Prednisone in Treating Patients With Metastatic, Castration-Resistant Prostate Cancer Previously Treated With Docetaxel",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Metastatic Prostate Carcinoma in the Soft Tissue",
        "Prostate Carcinoma Metastatic in the Bone",
        "Stage IV Prostate Adenocarcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Abiraterone Acetate",
          "type": "DRUG"
        },
        {
          "name": "Androgen deprivation therapy",
          "type": "DRUG"
        },
        {
          "name": "Cabazitaxel",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ECOG-ACRIN Cancer Research Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 223,
      "start_date": "2018-04-26",
      "completion_date": "2028-04-01",
      "has_results": true,
      "last_update_posted_date": "2026-08-06",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 665,
      "location_summary": "Fairbanks, Alaska • Goodyear, Arizona • Kingman, Arizona + 437 more",
      "locations": [
        {
          "city": "Fairbanks",
          "state": "Alaska"
        },
        {
          "city": "Goodyear",
          "state": "Arizona"
        },
        {
          "city": "Kingman",
          "state": "Arizona"
        },
        {
          "city": "Fort Smith",
          "state": "Arkansas"
        },
        {
          "city": "Hot Springs",
          "state": "Arkansas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03419234"
    },
    {
      "nct_id": "NCT03829930",
      "title": "Combination of Entinostat and Enzalutamide in Advanced Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prostate Adenocarcinoma"
      ],
      "interventions": [
        {
          "name": "Entinostat",
          "type": "DRUG"
        },
        {
          "name": "Enzalutamide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "George Washington University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 6,
      "start_date": "2019-05-01",
      "completion_date": "2020-09-01",
      "has_results": false,
      "last_update_posted_date": "2021-08-02",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "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/NCT03829930"
    },
    {
      "nct_id": "NCT02420587",
      "title": "AMG 208 Tumor Microenvironment in Metastatic Castration Resistant Prostate Cancer (mCRPC)",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "AMG 208",
          "type": "DRUG"
        },
        {
          "name": "Questionnaire",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BEHAVIORAL"
      ],
      "sponsor": "M.D. Anderson Cancer Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 0,
      "start_date": "2014-10",
      "completion_date": null,
      "has_results": false,
      "last_update_posted_date": "2015-04-20",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 1,
      "location_summary": "Houston, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02420587"
    },
    {
      "nct_id": "NCT00936975",
      "title": "Fluorine F 18 Sodium Fluoride Positron Emission Tomography in Evaluating Response to Dasatinib in Patients With Prostate Cancer and Bone Metastases",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hormone-Resistant Prostate Cancer",
        "Metastatic Malignant Neoplasm in the Bone",
        "Recurrent Prostate Carcinoma",
        "Stage IV Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Fluorine F 18 Sodium Fluoride",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "RADIATION"
      ],
      "sponsor": "National Cancer Institute (NCI)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 18,
      "start_date": "2009-09",
      "completion_date": "2014-12",
      "has_results": true,
      "last_update_posted_date": "2015-07-16",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 4,
      "location_summary": "Boston, Massachusetts • Durham, North Carolina • Portland, Oregon + 1 more",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Durham",
          "state": "North Carolina"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00936975"
    },
    {
      "nct_id": "NCT02204072",
      "title": "BI836845 Plus Enzalutamide in Castrate Resistant Prostate Cancer (CRPC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prostatic Neoplasms, Castration-Resistant"
      ],
      "interventions": [
        {
          "name": "BI 836845",
          "type": "DRUG"
        },
        {
          "name": "Enzalutamide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Boehringer Ingelheim",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 120,
      "start_date": "2014-11-11",
      "completion_date": "2023-06-01",
      "has_results": true,
      "last_update_posted_date": "2025-07-15",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 3,
      "location_summary": "Detroit, Michigan • New York, New York • Portland, Oregon",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02204072"
    },
    {
      "nct_id": "NCT04666129",
      "title": "Study of Relugolix in Men With Metastatic Castration-Sensitive Prostate Cancer or Non-Metastatic or Metastatic Castration-Resistant Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Metastatic Castration-Resistant Prostate Cancer",
        "Metastatic Castration-Sensitive Prostate Cancer",
        "Non-Metastatic Castration-Resistant Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Relugolix",
          "type": "DRUG"
        },
        {
          "name": "Abiraterone",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        },
        {
          "name": "Methylprednisolone",
          "type": "DRUG"
        },
        {
          "name": "Apalutamide",
          "type": "DRUG"
        },
        {
          "name": "Docetaxel",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sumitomo Pharma America, Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 48,
      "start_date": "2021-02-18",
      "completion_date": "2024-05-28",
      "has_results": false,
      "last_update_posted_date": "2025-08-17",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 16,
      "location_summary": "Tucson, Arizona • Little Rock, Arkansas • Lakewood, Colorado + 13 more",
      "locations": [
        {
          "city": "Tucson",
          "state": "Arizona"
        },
        {
          "city": "Little Rock",
          "state": "Arkansas"
        },
        {
          "city": "Lakewood",
          "state": "Colorado"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Worcester",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04666129"
    },
    {
      "nct_id": "NCT03570619",
      "title": "Immunotherapy in Patients With Metastatic Cancers and CDK12 Mutations",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Castration Resistant Prostate Cancer",
        "Metastatic Cancer",
        "Solid Tumor"
      ],
      "interventions": [
        {
          "name": "Nivolumab",
          "type": "DRUG"
        },
        {
          "name": "Ipilimumab",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Michigan Rogel 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": 56,
      "start_date": "2018-12-14",
      "completion_date": "2024-03-26",
      "has_results": true,
      "last_update_posted_date": "2025-05-08",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 8,
      "location_summary": "San Diego, California • San Francisco, California • Tampa, Florida + 5 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Tampa",
          "state": "Florida"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "Ann Arbor",
          "state": "Michigan"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03570619"
    },
    {
      "nct_id": "NCT04421222",
      "title": "Oral EPI-7386 in Patients with Castration-Resistant Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "EPI-7386 (QD)",
          "type": "DRUG"
        },
        {
          "name": "EPI-7386 (BID)",
          "type": "DRUG"
        },
        {
          "name": "Abiraterone acetate",
          "type": "DRUG"
        },
        {
          "name": "Apalutamide",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "ESSA Pharmaceuticals",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 71,
      "start_date": "2020-06-23",
      "completion_date": "2024-12-03",
      "has_results": false,
      "last_update_posted_date": "2025-02-28",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 7,
      "location_summary": "Port Saint Lucie, Florida • Atlanta, Georgia • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "Port Saint Lucie",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Las Vegas",
          "state": "Nevada"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04421222"
    },
    {
      "nct_id": "NCT01718353",
      "title": "Early Switch From First-Line Docetaxel/Prednisone to Cabazitaxel/Prednisone and the Opposite Sequence, Exploring Molecular Markers in Men With Metastatic Castration-Resistant Prostate Cancer (mCRPC)",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer Metastatic"
      ],
      "interventions": [
        {
          "name": "DOCETAXEL (XRP6976)",
          "type": "DRUG"
        },
        {
          "name": "CABAZITAXEL (XRP6258)",
          "type": "DRUG"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Sanofi",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 63,
      "start_date": "2013-03",
      "completion_date": "2015-08",
      "has_results": true,
      "last_update_posted_date": "2017-11-20",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 14,
      "location_summary": "Birmingham, Alabama • Washington D.C., District of Columbia • Indianapolis, Indiana + 10 more",
      "locations": [
        {
          "city": "Birmingham",
          "state": "Alabama"
        },
        {
          "city": "Washington D.C.",
          "state": "District of Columbia"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Metairie",
          "state": "Louisiana"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01718353"
    },
    {
      "nct_id": "NCT05553639",
      "title": "HB-302/HB-301 Therapy in Participants With Metastatic Castration-Resistant Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Prostate Cancer Metastatic"
      ],
      "interventions": [
        {
          "name": "HB-302/HB-301 Alternating 2-Vector Therapy",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "BIOLOGICAL"
      ],
      "sponsor": "Hookipa Biotech GmbH",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 12,
      "start_date": "2023-05-23",
      "completion_date": "2024-04-29",
      "has_results": false,
      "last_update_posted_date": "2024-06-12",
      "last_synced_at": "2026-09-10T07:19:48.610Z",
      "location_count": 10,
      "location_summary": "Duarte, California • San Marcos, California • Miami, Florida + 5 more",
      "locations": [
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "San Marcos",
          "state": "California"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Miami",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05553639"
    }
  ]
}