{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Anastrozole+placebo",
    "query": {
      "intervention": "Anastrozole placebo"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 41,
    "total_pages": 5,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?intervention=Anastrozole+placebo&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-23T12:51:58.856Z",
  "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": "NCT02246621",
      "title": "A Study of Nonsteroidal Aromatase Inhibitors Plus Abemaciclib (LY2835219) in Postmenopausal Women With Breast Cancer",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Eli Lilly and Company",
      "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": 493,
      "start_date": "2014-11-06",
      "completion_date": "2026-12",
      "has_results": true,
      "last_update_posted_date": "2026-02-03",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 20,
      "location_summary": "Chandler, Arizona • Springdale, Arkansas • Bakersfield, California + 13 more",
      "locations": [
        {
          "city": "Chandler",
          "state": "Arizona"
        },
        {
          "city": "Springdale",
          "state": "Arkansas"
        },
        {
          "city": "Bakersfield",
          "state": "California"
        },
        {
          "city": "Fresno",
          "state": "California"
        },
        {
          "city": "Los Angeles",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02246621"
    },
    {
      "nct_id": "NCT00104572",
      "title": "Effects of Aromatase Inhibition Versus Testosterone in Older Men With Low Testosterone: Randomized-Controlled Trial.",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypogonadism",
        "Diabetes",
        "Sarcopenia",
        "Osteoporosis",
        "Depression"
      ],
      "interventions": [
        {
          "name": "Androgel (Testosterone Gel)",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole (Aromatase Inhibitor)",
          "type": "DRUG"
        },
        {
          "name": "Placebo tablet",
          "type": "DRUG"
        },
        {
          "name": "Placebo gel",
          "type": "DRUG"
        },
        {
          "name": "Calcium Cardone 500mg with vitamin D 400 IU",
          "type": "DIETARY_SUPPLEMENT"
        }
      ],
      "intervention_types": [
        "DRUG",
        "DIETARY_SUPPLEMENT"
      ],
      "sponsor": "National Institute on Aging (NIA)",
      "sponsor_class": "NIH",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "65 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "65 Years and older · Male only"
      },
      "enrollment_count": 44,
      "start_date": "2004-03",
      "completion_date": "2015-01",
      "has_results": true,
      "last_update_posted_date": "2018-11-06",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Baltimore, Maryland",
      "locations": [
        {
          "city": "Baltimore",
          "state": "Maryland"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00104572"
    },
    {
      "nct_id": "NCT00440180",
      "title": "Aromatase Inhibitors in the Treatment of Male Infertility",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Obesity",
        "Oligospermia"
      ],
      "interventions": [
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Utah",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "16 Years",
        "maximum_age": "80 Years",
        "sex": "MALE",
        "summary": "16 Years to 80 Years · Male only"
      },
      "enrollment_count": 20,
      "start_date": "2007-03",
      "completion_date": "2014-06",
      "has_results": true,
      "last_update_posted_date": "2016-04-06",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Salt Lake City, Utah",
      "locations": [
        {
          "city": "Salt Lake City",
          "state": "Utah"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00440180"
    },
    {
      "nct_id": "NCT01151215",
      "title": "Study of Anastrozole +/- AZD8931 in Postmenopausal Women With Endocrine Therapy Naive Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Neoplasms",
        "Breast Neoplasms",
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "AZD8931",
          "type": "DRUG"
        },
        {
          "name": "anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "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": 482,
      "start_date": "2010-06",
      "completion_date": "2013-01",
      "has_results": true,
      "last_update_posted_date": "2014-07-25",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Lake Success, New York",
      "locations": [
        {
          "city": "Lake Success",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT01151215"
    },
    {
      "nct_id": "NCT00694733",
      "title": "Regulation of Cortisol Metabolism and Fat Patterning",
      "overall_status": "UNKNOWN",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Obesity",
        "Menopausal Syndrome"
      ],
      "interventions": [
        {
          "name": "Placebo injection",
          "type": "DRUG"
        },
        {
          "name": "Depo Lupron/Aromatase inhibitor",
          "type": "DRUG"
        },
        {
          "name": "Depo Lupron/placebo",
          "type": "DRUG"
        },
        {
          "name": "placebo",
          "type": "DRUG"
        },
        {
          "name": "Estrogen cream",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Oregon Health and Science University",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "62 Years",
        "sex": "ALL",
        "summary": "18 Years to 62 Years"
      },
      "enrollment_count": 140,
      "start_date": "2005-05",
      "completion_date": "2024-09",
      "has_results": false,
      "last_update_posted_date": "2022-12-16",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Portland, Oregon",
      "locations": [
        {
          "city": "Portland",
          "state": "Oregon"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00694733"
    },
    {
      "nct_id": "NCT03229499",
      "title": "Pulmonary Hypertension and Anastrozole Trial",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Pulmonary Arterial Hypertension"
      ],
      "interventions": [
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Placebo Oral Tablet",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Pennsylvania",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 84,
      "start_date": "2017-12-07",
      "completion_date": "2022-07-22",
      "has_results": true,
      "last_update_posted_date": "2024-05-01",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 7,
      "location_summary": "Stanford, California • Aurora, Colorado • Baltimore, Maryland + 4 more",
      "locations": [
        {
          "city": "Stanford",
          "state": "California"
        },
        {
          "city": "Aurora",
          "state": "Colorado"
        },
        {
          "city": "Baltimore",
          "state": "Maryland"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03229499"
    },
    {
      "nct_id": "NCT00136695",
      "title": "Anastrozole Administration in Elderly Hypogonadal Men",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Hypogonadism"
      ],
      "interventions": [
        {
          "name": "anastrozole",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "60 Years",
        "maximum_age": null,
        "sex": "MALE",
        "summary": "60 Years and older · Male only"
      },
      "enrollment_count": 88,
      "start_date": "2004-10",
      "completion_date": "2009-10",
      "has_results": true,
      "last_update_posted_date": "2022-09-13",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00136695"
    },
    {
      "nct_id": "NCT00438321",
      "title": "Effect of Increasing Testosterone on Insulin Sensitivity in Men With the Metabolic Syndrome",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Metabolic Syndrome"
      ],
      "interventions": [
        {
          "name": "Zoladex",
          "type": "DRUG"
        },
        {
          "name": "Testosterone gel",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole Pill",
          "type": "DRUG"
        },
        {
          "name": "Placebo",
          "type": "OTHER"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER"
      ],
      "sponsor": "Massachusetts General Hospital",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "50 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "50 Years to 75 Years · Male only"
      },
      "enrollment_count": 66,
      "start_date": "2006-09",
      "completion_date": "2010-02-26",
      "has_results": false,
      "last_update_posted_date": "2017-04-18",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Boston, Massachusetts",
      "locations": [
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT00438321"
    },
    {
      "nct_id": "NCT02203331",
      "title": "Bay98-7196, Dose Finding / POC Study",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Endometriosis"
      ],
      "interventions": [
        {
          "name": "Placebo",
          "type": "DRUG"
        },
        {
          "name": "Levonorgestrel",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Lupron / Leuprolide acetate",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Bayer",
      "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": 319,
      "start_date": "2014-10-16",
      "completion_date": "2016-10-24",
      "has_results": true,
      "last_update_posted_date": "2023-11-07",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 25,
      "location_summary": "San Diego, California • San Francisco, California • Gainesville, Florida + 22 more",
      "locations": [
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "San Francisco",
          "state": "California"
        },
        {
          "city": "Gainesville",
          "state": "Florida"
        },
        {
          "city": "New Port Richey",
          "state": "Florida"
        },
        {
          "city": "Atlanta",
          "state": "Georgia"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02203331"
    },
    {
      "nct_id": "NCT02758431",
      "title": "Cardiovascular Outcomes of Low Testosterone",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Hypogonadism"
      ],
      "interventions": [
        {
          "name": "Acyline",
          "type": "DRUG"
        },
        {
          "name": "Placebo Gel",
          "type": "DRUG"
        },
        {
          "name": "Placebo Tablet",
          "type": "DRUG"
        },
        {
          "name": "Testosterone Gel",
          "type": "DRUG"
        },
        {
          "name": "Arimidex",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of Colorado, Denver",
      "sponsor_class": "OTHER",
      "healthy_volunteers": true,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": "75 Years",
        "sex": "MALE",
        "summary": "18 Years to 75 Years · Male only"
      },
      "enrollment_count": 232,
      "start_date": "2016-07-01",
      "completion_date": "2023-01-04",
      "has_results": false,
      "last_update_posted_date": "2024-10-10",
      "last_synced_at": "2026-09-23T12:51:58.856Z",
      "location_count": 1,
      "location_summary": "Denver, Colorado",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02758431"
    }
  ]
}