{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=progesterone",
    "query": {
      "intervention": "progesterone"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 451,
    "total_pages": 46,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=progesterone&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-07T06:34:48.020Z",
  "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": "NCT00041899",
      "title": "Comparison of Blood Levels of Two Formulations of the Selective Hormone Receptor Modulator CDB-2914",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Healthy"
      ],
      "interventions": [
        {
          "name": "CDB-2914",
          "type": "DRUG"
        },
        {
          "name": "COB-2914",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 15,
      "start_date": "2002-05",
      "completion_date": "2005-03",
      "has_results": false,
      "last_update_posted_date": "2008-03-04",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00041899"
    },
    {
      "nct_id": "NCT00044876",
      "title": "Treatment of Uterine Fibroids With CDB-2914, an Experimental Selective Progesterone Receptor Antagonist",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Leiomyoma"
      ],
      "interventions": [
        {
          "name": "CDB-2914",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eunice Kennedy Shriver National Institute of Child Health and Human Development (NICHD)",
      "sponsor_class": "NIH",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "33 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "33 Years to 50 Years · Female only"
      },
      "enrollment_count": 56,
      "start_date": "2002-09-02",
      "completion_date": "2015-10-01",
      "has_results": false,
      "last_update_posted_date": "2019-12-17",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Bethesda, Maryland",
      "locations": [
        {
          "city": "Bethesda",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00044876"
    },
    {
      "nct_id": "NCT01421368",
      "title": "Contraception and Menstrual Cycle Effect on Pharmacokinetics, Pharmacodynamics and Safety in Tenofovir Vaginal Gel Use",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "HIV Prevention"
      ],
      "interventions": [
        {
          "name": "Tenofovir 1% vaginal gel",
          "type": "DRUG"
        },
        {
          "name": "Depo-medroxyprogesterone acetate (DMPA)",
          "type": "DRUG"
        },
        {
          "name": "Oral contraceptive: LNG 150 mcg and EE 30 mcg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "CONRAD",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 72,
      "start_date": "2012-03",
      "completion_date": "2014-03",
      "has_results": false,
      "last_update_posted_date": "2015-04-10",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 2,
      "location_summary": "Pittsburgh, Pennsylvania • Norfolk, Virginia",
      "locations": [
        {
          "city": "Pittsburgh",
          "state": "Pennsylvania"
        },
        {
          "city": "Norfolk",
          "state": "Virginia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01421368"
    },
    {
      "nct_id": "NCT01744574",
      "title": "Sex Differences, Hormones & Smoking Cessation",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Tobacco Cessation"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "OTHER"
        },
        {
          "name": "Progesterone",
          "type": "DRUG"
        },
        {
          "name": "Smoking Cessation Behavioral Counseling",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER",
        "DRUG"
      ],
      "sponsor": "University of Minnesota",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "60 Years",
        "sex": "ALL",
        "summary": "18 Years to 60 Years"
      },
      "enrollment_count": 216,
      "start_date": "2012-12",
      "completion_date": "2017-07-27",
      "has_results": true,
      "last_update_posted_date": "2019-07-12",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Minneapolis, Minnesota",
      "locations": [
        {
          "city": "Minneapolis",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01744574"
    },
    {
      "nct_id": "NCT00455962",
      "title": "Effect of Race on Gonadotropin Responses",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Premenopause",
        "Healthy"
      ],
      "interventions": [
        {
          "name": "Estradiol steroid infusion",
          "type": "DRUG"
        },
        {
          "name": "Progesterone steroid infusion",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "35 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 35 Years · Female only"
      },
      "enrollment_count": 23,
      "start_date": "2005-01",
      "completion_date": "2011-12",
      "has_results": true,
      "last_update_posted_date": "2017-07-27",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00455962"
    },
    {
      "nct_id": "NCT00154180",
      "title": "Kronos Early Estrogen Prevention Study (KEEPS)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Menopause",
        "Arteriosclerosis"
      ],
      "interventions": [
        {
          "name": "Conjugated equine estrogens 0.45 mg/day",
          "type": "DRUG"
        },
        {
          "name": "Transdermal estradiol, 50 mcg/day",
          "type": "DRUG"
        },
        {
          "name": "Micronized progesterone, 200 mg/day x 12 d/month",
          "type": "DRUG"
        },
        {
          "name": "CEE , progesterone, estradiol patch or placebo for each",
          "type": "DRUG"
        },
        {
          "name": "CEE, progesterone, transdermal patch or the placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Kronos Longevity Research Institute",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "42 Years",
        "maximum_age": "58 Years",
        "sex": "FEMALE",
        "summary": "42 Years to 58 Years · Female only"
      },
      "enrollment_count": 728,
      "start_date": "2005-09",
      "completion_date": "2012-07",
      "has_results": false,
      "last_update_posted_date": "2009-09-14",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 9,
      "location_summary": "Phoenix, Arizona • San Francisco, California • New Haven, Connecticut + 6 more",
      "locations": [
        {
          "city": "Phoenix",
          "state": "Arizona"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "Rochester",
          "state": "Minnesota"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00154180"
    },
    {
      "nct_id": "NCT03902587",
      "title": "Application of Cervical Elastography in Obstetrics",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Cervical Elastography"
      ],
      "interventions": [
        {
          "name": "Samsung's E-cervix technology",
          "type": "DEVICE"
        }
      ],
      "intervention_types": [
        "DEVICE"
      ],
      "sponsor": "NYU Langone Health",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "50 Years",
        "sex": "FEMALE",
        "summary": "18 Years to 50 Years · Female only"
      },
      "enrollment_count": 1000,
      "start_date": "2019-03-04",
      "completion_date": "2021-01-25",
      "has_results": false,
      "last_update_posted_date": "2021-02-03",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Mineola, New York",
      "locations": [
        {
          "city": "Mineola",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03902587"
    },
    {
      "nct_id": "NCT05505435",
      "title": "Continuation of Subcutaneous and Intramuscular Depot Medroxyprogesterone Acetate in Post-abortion Patients",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Contraception"
      ],
      "interventions": [
        {
          "name": "Depot-Medroxyprogestereone Acetate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Northwestern University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 263,
      "start_date": "2022-08-01",
      "completion_date": "2024-03-30",
      "has_results": false,
      "last_update_posted_date": "2026-02-12",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Chicago, Illinois",
      "locations": [
        {
          "city": "Chicago",
          "state": "Illinois"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05505435"
    },
    {
      "nct_id": "NCT00371345",
      "title": "Study of Dasatinib (BMS-354825) in Patients With Advanced Estrogen/Progesterone Receptor-positive (ER+/PR+) or Her2/Neu-positive (Her2/Neu+)Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Metastasis"
      ],
      "interventions": [
        {
          "name": "Dasatinib",
          "type": "DRUG"
        },
        {
          "name": "Dasatinib 100 mg",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bristol-Myers Squibb",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 92,
      "start_date": "2006-12",
      "completion_date": "2009-05",
      "has_results": true,
      "last_update_posted_date": "2011-04-26",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 7,
      "location_summary": "San Francisco, California • Jacksonville, Florida • Boston, Massachusetts + 4 more",
      "locations": [
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Jacksonville",
          "state": "Florida"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        },
        {
          "city": "The Bronx",
          "state": "New York"
        },
        {
          "city": "Chapel Hill",
          "state": "North Carolina"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00371345"
    },
    {
      "nct_id": "NCT01344837",
      "title": "Biomarkers in Blood and Tissue Samples From Patients With Uterine Cancer",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Endometrial Serous Adenocarcinoma",
        "Stage I Uterine Corpus Cancer",
        "Stage II Uterine Corpus Cancer",
        "Stage III Uterine Corpus Cancer",
        "Stage IV Uterine Corpus Cancer"
      ],
      "interventions": [
        {
          "name": "Diagnostic Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Immunohistochemistry Staining Method",
          "type": "OTHER"
        },
        {
          "name": "Medical Chart Review",
          "type": "OTHER"
        },
        {
          "name": "Microarray Analysis",
          "type": "GENETIC"
        },
        {
          "name": "Study of Socioeconomic and Demographic Variables",
          "type": "OTHER"
        },
        {
          "name": "Western Blotting",
          "type": "GENETIC"
        }
      ],
      "intervention_types": [
        "OTHER",
        "GENETIC"
      ],
      "sponsor": "Gynecologic Oncology Group",
      "sponsor_class": "NETWORK",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": null,
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "Female only"
      },
      "enrollment_count": 360,
      "start_date": "2010-01",
      "completion_date": "2018-01",
      "has_results": false,
      "last_update_posted_date": "2024-08-14",
      "last_synced_at": "2026-09-07T06:34:48.020Z",
      "location_count": 1,
      "location_summary": "Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01344837"
    }
  ]
}