{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Castration+Levels+of+Testosterone",
    "query": {
      "condition": "Castration Levels of Testosterone"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 21,
    "total_pages": 3,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=Castration+Levels+of+Testosterone&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-05-21T22:27:01.680Z",
  "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": "NCT03456804",
      "title": "ESK981 in Treating Patients With Metastatic Castrate-Resistant Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Metastatic Prostate Carcinoma",
        "PSA Progression",
        "Stage IV Prostate Adenocarcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "ESK981",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Barbara Ann Karmanos Cancer Institute",
      "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": 13,
      "start_date": "2018-03-08",
      "completion_date": "2023-05-09",
      "has_results": true,
      "last_update_posted_date": "2023-07-14",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 2,
      "location_summary": "Detroit, Michigan • Seattle, Washington",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03456804"
    },
    {
      "nct_id": "NCT03442556",
      "title": "Docetaxel, Carboplatin, and Rucaparib Camsylate in Treating Patients With Metastatic Castration Resistant Prostate Cancer With Homologous Recombination DNA Repair Deficiency",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "ATM Gene Mutation",
        "BRCA1 Gene Mutation",
        "BRCA2 Gene Mutation",
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Homologous Recombination Deficiency",
        "Prostate Carcinoma Metastatic in the Bone",
        "PSA Level Greater Than or Equal to Two",
        "PSA Progression",
        "Stage IV Prostate Adenocarcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Docetaxel",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Rucaparib Camsylate",
          "type": "DRUG"
        },
        {
          "name": "Rucaparib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "University of Washington",
      "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": 18,
      "start_date": "2018-08-24",
      "completion_date": "2025-06-04",
      "has_results": false,
      "last_update_posted_date": "2025-06-12",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03442556"
    },
    {
      "nct_id": "NCT02228265",
      "title": "Molecular Features and Pathways in Predicting Drug Resistance in Patients With Metastatic Castration-Resistant Prostate Cancer Receiving Enzalutamide",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Prostate Adenocarcinoma",
        "PSA Progression",
        "Recurrent Prostate Carcinoma",
        "Stage IV Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Cytology Specimen Collection Procedure",
          "type": "OTHER"
        },
        {
          "name": "Enzalutamide",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "OHSU Knight Cancer Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "MALE",
        "summary": "Male only"
      },
      "enrollment_count": 41,
      "start_date": "2013-03-12",
      "completion_date": "2020-02-27",
      "has_results": false,
      "last_update_posted_date": "2020-09-28",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 3,
      "location_summary": "Los Angeles, California • San Francisco, California • Portland, Oregon",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02228265"
    },
    {
      "nct_id": "NCT02703623",
      "title": "Abiraterone Acetate, Prednisone, and Apalutamide With or Without Ipilimumab or Cabazitaxel and Carboplatin in Treating Patients With Metastatic Castration-Resistant Prostate Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Metastatic Prostate Carcinoma",
        "PSA Progression",
        "Stage IV Prostate Adenocarcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Abiraterone Acetate",
          "type": "DRUG"
        },
        {
          "name": "Apalutamide",
          "type": "DRUG"
        },
        {
          "name": "Cabazitaxel",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Ipilimumab",
          "type": "BIOLOGICAL"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL",
        "OTHER"
      ],
      "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": 196,
      "start_date": "2016-05-18",
      "completion_date": "2028-03-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-06",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 3,
      "location_summary": "Houston, Texas • Sugar Land, Texas",
      "locations": [
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Houston",
          "state": "Texas"
        },
        {
          "city": "Sugar Land",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02703623"
    },
    {
      "nct_id": "NCT02215161",
      "title": "Selinexor in Treating Patients With Abiraterone Acetate and/or Enzalutamide Refractory Metastatic Castration-Resistant Prostate Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Hormone-Resistant Prostate Cancer",
        "Metastatic Prostate Carcinoma in the Soft Tissue",
        "Prostate Carcinoma Metastatic in the Bone",
        "PSA Progression",
        "Stage IV Prostate Adenocarcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Selinexor",
          "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": "MALE",
        "summary": "18 Years and older · Male only"
      },
      "enrollment_count": 14,
      "start_date": "2014-09-02",
      "completion_date": "2018-04-02",
      "has_results": true,
      "last_update_posted_date": "2018-06-26",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02215161"
    },
    {
      "nct_id": "NCT03503344",
      "title": "Apalutamide With or Without Stereotactic Body Radiation in Treating Castration-Resistant Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "PSA Progression",
        "Stage IV Prostate Adenocarcinoma AJCC v7"
      ],
      "interventions": [
        {
          "name": "Apalutamide",
          "type": "DRUG"
        },
        {
          "name": "Stereotactic Body Radiation Therapy",
          "type": "RADIATION"
        }
      ],
      "intervention_types": [
        "DRUG",
        "RADIATION"
      ],
      "sponsor": "University of California, San Francisco",
      "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": 26,
      "start_date": "2019-12-17",
      "completion_date": "2025-10-31",
      "has_results": true,
      "last_update_posted_date": "2026-01-21",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03503344"
    },
    {
      "nct_id": "NCT03805594",
      "title": "177Lu-PSMA-617 and Pembrolizumab in Treating Patients With Metastatic Castration-Resistant Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Metastatic Prostate Carcinoma",
        "Prostate Adenocarcinoma",
        "Stage IV Prostate Cancer",
        "Stage IVA Prostate Cancer",
        "Stage IVB Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Lutetium Lu 177-PSMA-617",
          "type": "DRUG"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "BIOLOGICAL"
      ],
      "sponsor": "University of California, San Francisco",
      "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": 43,
      "start_date": "2019-05-10",
      "completion_date": "2024-01-10",
      "has_results": true,
      "last_update_posted_date": "2025-02-25",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 1,
      "location_summary": "San Francisco, California",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03805594"
    },
    {
      "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": "2026-04-01",
      "has_results": true,
      "last_update_posted_date": "2026-04-01",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "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": "NCT01505868",
      "title": "Cabazitaxel With or Without Carboplatin in Treating Patients With Previously Treated Metastatic Castration-Resistant Prostate Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Castration-Resistant Prostate Carcinoma",
        "Lymphadenopathy",
        "Metastatic Prostate Carcinoma",
        "Prostate Adenocarcinoma",
        "Prostate Carcinoma Metastatic in the Bone",
        "Prostate Small Cell Carcinoma"
      ],
      "interventions": [
        {
          "name": "Cabazitaxel",
          "type": "DRUG"
        },
        {
          "name": "Carboplatin",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "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": 170,
      "start_date": "2012-07-11",
      "completion_date": "2019-12-09",
      "has_results": true,
      "last_update_posted_date": "2021-07-30",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 2,
      "location_summary": "Detroit, Michigan • Houston, Texas",
      "locations": [
        {
          "city": "Detroit",
          "state": "Michigan"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01505868"
    },
    {
      "nct_id": "NCT03678025",
      "title": "Standard Systemic Therapy With or Without Definitive Treatment in Treating Participants With Metastatic Prostate Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Castration Levels of Testosterone",
        "Metastatic Prostatic Adenocarcinoma",
        "Stage IV Prostate Cancer AJCC v8",
        "Stage IVA Prostate Cancer AJCC v8",
        "Stage IVB Prostate Cancer AJCC v8"
      ],
      "interventions": [
        {
          "name": "Abiraterone",
          "type": "DRUG"
        },
        {
          "name": "Bicalutamide",
          "type": "DRUG"
        },
        {
          "name": "Degarelix",
          "type": "DRUG"
        },
        {
          "name": "Docetaxel",
          "type": "DRUG"
        },
        {
          "name": "Flutamide",
          "type": "DRUG"
        },
        {
          "name": "Goserelin Acetate",
          "type": "DRUG"
        },
        {
          "name": "Histrelin Acetate",
          "type": "DRUG"
        },
        {
          "name": "Leuprolide Acetate",
          "type": "DRUG"
        },
        {
          "name": "Nilutamide",
          "type": "DRUG"
        },
        {
          "name": "Orchiectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "Prednisone",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Radiation Therapy",
          "type": "RADIATION"
        },
        {
          "name": "Radical Prostatectomy",
          "type": "PROCEDURE"
        },
        {
          "name": "Triptorelin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "PROCEDURE",
        "OTHER",
        "RADIATION"
      ],
      "sponsor": "SWOG Cancer Research Network",
      "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": 1273,
      "start_date": "2018-09-24",
      "completion_date": "2031-10-01",
      "has_results": false,
      "last_update_posted_date": "2025-09-11",
      "last_synced_at": "2026-05-21T22:27:01.680Z",
      "location_count": 334,
      "location_summary": "Gilbert, Arizona • Phoenix, Arizona • Scottsdale, Arizona + 253 more",
      "locations": [
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "Tucson",
          "state": "Arizona"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03678025"
    }
  ]
}