{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Clinical+estrogen+therapy",
    "query": {
      "intervention": "Clinical estrogen therapy"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 89,
    "total_pages": 9,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Clinical+estrogen+therapy&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-21T07:25:52.940Z",
  "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": "NCT06353269",
      "title": "Adherence to Vaginal Estrogen Therapy in Hypoestrogenic Women With Recurrent Urinary Tract Infections",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE4"
      ],
      "conditions": [
        "Recurrent Urinary Tract Infection",
        "Hypoestrogenism"
      ],
      "interventions": [
        {
          "name": "Estring Vaginal Product",
          "type": "DRUG"
        },
        {
          "name": "Vagifem",
          "type": "DRUG"
        },
        {
          "name": "Estrace 0.01% Vaginal Cream",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Irvine",
      "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": 111,
      "start_date": "2024-06-14",
      "completion_date": "2027-09",
      "has_results": false,
      "last_update_posted_date": "2026-06-11",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06353269"
    },
    {
      "nct_id": "NCT04719273",
      "title": "Onapristone and Anastrozole for the Treatment of Refractory Hormone Receptor Positive Endometrial Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Refractory Endometrial Adenocarcinoma",
        "Refractory Endometrial Carcinoma",
        "Refractory Endometrial Clear Cell Adenocarcinoma",
        "Refractory Endometrial Endometrioid Adenocarcinoma",
        "Refractory Endometrial Mixed Cell Adenocarcinoma",
        "Refractory Endometrial Serous Adenocarcinoma",
        "Refractory Endometrial Undifferentiated Carcinoma"
      ],
      "interventions": [
        {
          "name": "Extended-release Onapristone",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Quality-of-Life Assessment",
          "type": "OTHER"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "Estrogen Receptor Positive (Positive Estrogen Receptor; ESR Positive; ESR1 Positive; ER Positive; Estrogen Receptor Alpha Positive)",
          "type": "DIAGNOSTIC_TEST"
        },
        {
          "name": "Progesterone Receptor Positive ( PGR Positive; PR Positive)",
          "type": "DIAGNOSTIC_TEST"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "DIAGNOSTIC_TEST"
      ],
      "sponsor": "Thomas Jefferson University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 14,
      "start_date": "2021-01-28",
      "completion_date": "2025-12-17",
      "has_results": true,
      "last_update_posted_date": "2026-07-17",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 2,
      "location_summary": "Abington, Pennsylvania • Philadelphia, Pennsylvania",
      "locations": [
        {
          "city": "Abington",
          "state": "Pennsylvania"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04719273"
    },
    {
      "nct_id": "NCT01880086",
      "title": "Clomiphene Citrate for the Treatment of Low Testosterone Associated With Chronic Opioid Pain Medication Administration",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypogonadism",
        "Opioid-Related Disorders",
        "Male Infertility"
      ],
      "interventions": [
        {
          "name": "Clomiphene citrate",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Weill Medical College of Cornell University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "65 Years",
        "sex": "MALE",
        "summary": "18 Years to 65 Years · Male only"
      },
      "enrollment_count": 13,
      "start_date": "2013-08",
      "completion_date": "2017-11",
      "has_results": true,
      "last_update_posted_date": "2018-07-17",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01880086"
    },
    {
      "nct_id": "NCT05079360",
      "title": "Efficacy Evaluation of Sabizabulin Monotherapy Versus Active Control for Treatment of ER+HER2- Metastatic Breast Cancer",
      "overall_status": "WITHDRAWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Metastatic Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Sabizabulin",
          "type": "DRUG"
        },
        {
          "name": "Exemestane monotherapy, exemestane plus everolimus, or selective estrogen receptor modulator",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Veru Inc.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "100 Years",
        "sex": "ALL",
        "summary": "18 Years to 100 Years"
      },
      "enrollment_count": 0,
      "start_date": "2023-03-15",
      "completion_date": "2024-05-26",
      "has_results": false,
      "last_update_posted_date": "2023-03-24",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 26,
      "location_summary": "Anchorage, Alaska • Chandler, Arizona • Gilbert, Arizona + 22 more",
      "locations": [
        {
          "city": "Anchorage",
          "state": "Alaska"
        },
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Gilbert",
          "state": "Arizona"
        },
        {
          "city": "Glendale",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05079360"
    },
    {
      "nct_id": "NCT02564848",
      "title": "Safety and Efficacy of Omission of Sentinel Node Biopsy in Patients With Estrogen-Positive Breast Cancer Over Age 65",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Lumpectomy without sentinel node biopsy",
          "type": "PROCEDURE"
        }
      ],
      "intervention_types": [
        "PROCEDURE"
      ],
      "sponsor": "Cedars-Sinai Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "65 Years and older · Female only"
      },
      "enrollment_count": 200,
      "start_date": "2016-01-22",
      "completion_date": "2029-03",
      "has_results": false,
      "last_update_posted_date": "2026-08-10",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "Los Angeles, California",
      "locations": [
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02564848"
    },
    {
      "nct_id": "NCT00580112",
      "title": "An Efficacy Study of Trabectedin in the Treatment of Participants With Specific Subtypes of Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Neoplasms"
      ],
      "interventions": [
        {
          "name": "Dexamethasone",
          "type": "DRUG"
        },
        {
          "name": "Trabectedin",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Johnson & Johnson Pharmaceutical Research & Development, L.L.C.",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 127,
      "start_date": "2007-06",
      "completion_date": "2011-08",
      "has_results": false,
      "last_update_posted_date": "2014-02-25",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 21,
      "location_summary": "Sedona, Arizona • Denver, Colorado • Torrington, Connecticut + 18 more",
      "locations": [
        {
          "city": "Sedona",
          "state": "Arizona"
        },
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Torrington",
          "state": "Connecticut"
        },
        {
          "city": "Indianapolis",
          "state": "Indiana"
        },
        {
          "city": "Westminster",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00580112"
    },
    {
      "nct_id": "NCT06086704",
      "title": "Study of 18F-FFNP Breast PET/MRI",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "18F-fluorofuranylnorprogesterone",
          "type": "DRUG"
        },
        {
          "name": "Positron Emissions Tomography / Magnetic Resonance Imaging",
          "type": "DEVICE"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Blood Sampling",
          "type": "OTHER"
        },
        {
          "name": "FDA-approved gadolinium-based intravenous contrast agent",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DEVICE",
        "OTHER"
      ],
      "sponsor": "University of Wisconsin, Madison",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 53,
      "start_date": "2024-09-25",
      "completion_date": "2030-08-31",
      "has_results": false,
      "last_update_posted_date": "2026-08-31",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "Madison, Wisconsin",
      "locations": [
        {
          "city": "Madison",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06086704"
    },
    {
      "nct_id": "NCT02528383",
      "title": "Trial of Vaginal Estrogen for Urogenital Symptom Relief in Women on Aromatase Inhibitors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Vagifem",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Susan Tannenbaum",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "FEMALE",
        "summary": "18 Years and older · Female only"
      },
      "enrollment_count": 3,
      "start_date": "2015-08",
      "completion_date": "2017-05",
      "has_results": false,
      "last_update_posted_date": "2017-09-18",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "Farmington, Connecticut",
      "locations": [
        {
          "city": "Farmington",
          "state": "Connecticut"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02528383"
    },
    {
      "nct_id": "NCT05607303",
      "title": "Effect of Hormones on Frequency of Headache and Brain Structure and Function in Puberty",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Headache",
        "Gender Identity"
      ],
      "interventions": [
        {
          "name": "Clinical estrogen therapy",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "OTHER"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "9 Years",
        "maximum_age": "20 Years",
        "sex": "ALL",
        "summary": "9 Years to 20 Years"
      },
      "enrollment_count": 138,
      "start_date": "2021-12-14",
      "completion_date": "2027-06-30",
      "has_results": false,
      "last_update_posted_date": "2026-09-16",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "Aurora, Colorado",
      "locations": [
        {
          "city": "Aurora",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05607303"
    },
    {
      "nct_id": "NCT04669587",
      "title": "ER+/HER2- Locally Advanced or Metastatic Breast Cancer (ENZENO Study)",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "Estrogen Receptor-Positive",
        "HER2-Negative",
        "Locally Advanced Breast Cancer",
        "Metastatic Breast Cancer"
      ],
      "interventions": [
        {
          "name": "ZB716",
          "type": "DRUG"
        },
        {
          "name": "Palbociclib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "EnhancedBio USA Inc.",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 106,
      "start_date": "2021-07-26",
      "completion_date": "2024-01-31",
      "has_results": false,
      "last_update_posted_date": "2022-03-22",
      "last_synced_at": "2026-09-21T07:25:52.940Z",
      "location_count": 1,
      "location_summary": "Seattle, Washington",
      "locations": [
        {
          "city": "Seattle",
          "state": "Washington"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04669587"
    }
  ]
}