{
  "api_version": "1",
  "request": {
    "url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=HR-positive+Breast+Cancer",
    "query": {
      "condition": "HR-positive Breast Cancer"
    },
    "page_size": 10
  },
  "pagination": {
    "page": 1,
    "page_size": 10,
    "total_count": 157,
    "total_pages": 16,
    "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?condition=HR-positive+Breast+Cancer&page=2&page_size=10",
    "previous_page_url": null
  },
  "source": "remote",
  "last_synced_at": "2026-09-22T04:41:51.874Z",
  "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": "NCT03874325",
      "title": "Aromatase Inhibitor and Durvalumab in Postmenopausal Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Hormone Receptor Positive Tumor"
      ],
      "interventions": [
        {
          "name": "Durvalumab",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole 1mg",
          "type": "DRUG"
        },
        {
          "name": "Letrozole 2.5mg",
          "type": "DRUG"
        },
        {
          "name": "Exemestane 25 MG",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "H. Lee Moffitt Cancer Center and Research Institute",
      "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": 17,
      "start_date": "2019-04-26",
      "completion_date": "2021-01-06",
      "has_results": true,
      "last_update_posted_date": "2022-05-31",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 1,
      "location_summary": "Tampa, Florida",
      "locations": [
        {
          "city": "Tampa",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT03874325"
    },
    {
      "nct_id": "NCT05159518",
      "title": "A Study of PRT2527 in Participants With Advanced Solid Tumors",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Sarcoma",
        "Castrate Resistant Prostate Cancer",
        "Hormone Receptor Positive HER2 Negative Breast Cancer",
        "Non-small Cell Lung Cancer",
        "Solid Tumors With Known MYC Amplification"
      ],
      "interventions": [
        {
          "name": "PRT2527",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Prelude Therapeutics Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2022-02-14",
      "completion_date": "2023-12-06",
      "has_results": false,
      "last_update_posted_date": "2023-12-11",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 8,
      "location_summary": "Denver, Colorado • Celebration, Florida • Sarasota, Florida + 4 more",
      "locations": [
        {
          "city": "Denver",
          "state": "Colorado"
        },
        {
          "city": "Celebration",
          "state": "Florida"
        },
        {
          "city": "Sarasota",
          "state": "Florida"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Philadelphia",
          "state": "Pennsylvania"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05159518"
    },
    {
      "nct_id": "NCT02648477",
      "title": "Pembrolizumab and Doxorubicin Hydrochloride or Anti-Estrogen Therapy in Treating Patients With Triple-Negative or Hormone Receptor-Positive Metastatic Breast Cancer",
      "overall_status": "COMPLETED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Estrogen Receptor Negative",
        "Estrogen Receptor Positive",
        "HER2/Neu Negative",
        "Progesterone Receptor Negative",
        "Progesterone Receptor Positive",
        "Stage IV Breast Cancer",
        "Triple-Negative Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Doxorubicin Hydrochloride",
          "type": "DRUG"
        },
        {
          "name": "Exemestane",
          "type": "DRUG"
        },
        {
          "name": "Laboratory Biomarker Analysis",
          "type": "OTHER"
        },
        {
          "name": "Letrozole",
          "type": "DRUG"
        },
        {
          "name": "Pembrolizumab",
          "type": "BIOLOGICAL"
        }
      ],
      "intervention_types": [
        "DRUG",
        "OTHER",
        "BIOLOGICAL"
      ],
      "sponsor": "City of Hope Medical Center",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 30,
      "start_date": "2016-03-28",
      "completion_date": "2023-12-30",
      "has_results": true,
      "last_update_posted_date": "2024-03-19",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 6,
      "location_summary": "Corona, California • Duarte, California • Lancaster, California + 3 more",
      "locations": [
        {
          "city": "Corona",
          "state": "California"
        },
        {
          "city": "Duarte",
          "state": "California"
        },
        {
          "city": "Lancaster",
          "state": "California"
        },
        {
          "city": "Rancho Cucamonga",
          "state": "California"
        },
        {
          "city": "South Pasadena",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT02648477"
    },
    {
      "nct_id": "NCT07205822",
      "title": "A Study of Dato-DXd in Inoperable or Metastatic Hormone Receptor-positive, HER2 IHC 0 Breast Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE3"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Dato-DXd",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "AstraZeneca",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 100,
      "start_date": "2025-10-30",
      "completion_date": "2028-02-02",
      "has_results": false,
      "last_update_posted_date": "2026-08-28",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 6,
      "location_summary": "Largo, Florida • Fort Wayne, Indiana • Omaha, Nebraska + 3 more",
      "locations": [
        {
          "city": "Largo",
          "state": "Florida"
        },
        {
          "city": "Fort Wayne",
          "state": "Indiana"
        },
        {
          "city": "Omaha",
          "state": "Nebraska"
        },
        {
          "city": "New York",
          "state": "New York"
        },
        {
          "city": "Houston",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07205822"
    },
    {
      "nct_id": "NCT05384119",
      "title": "Phase 1b/2 Study of TTI-101 in Combination for Patients With Metastatic Hormone Receptor-Positive and HER2-Negative Breast Cancer",
      "overall_status": "TERMINATED",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "TTI-101",
          "type": "DRUG"
        },
        {
          "name": "Palbociclib",
          "type": "DRUG"
        },
        {
          "name": "Aromatase inhibitor (AI)",
          "type": "DRUG"
        },
        {
          "name": "fulvestrant",
          "type": "DRUG"
        },
        {
          "name": "ribociclib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Tvardi Therapeutics, Incorporated",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 6,
      "start_date": "2023-01-09",
      "completion_date": "2024-04-25",
      "has_results": false,
      "last_update_posted_date": "2025-02-21",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 6,
      "location_summary": "Fort Lauderdale, Florida • St Louis, Missouri • Nashville, Tennessee + 2 more",
      "locations": [
        {
          "city": "Fort Lauderdale",
          "state": "Florida"
        },
        {
          "city": "St Louis",
          "state": "Missouri"
        },
        {
          "city": "Nashville",
          "state": "Tennessee"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        },
        {
          "city": "Dallas",
          "state": "Texas"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05384119"
    },
    {
      "nct_id": "NCT05524584",
      "title": "Anastrazole, Fulvestrant & Abemaciclib for HR+HER2- Metastatic Breast Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Breast Cancer",
        "Metastatic Breast Cancer",
        "Hormone Receptor-positive Breast Cancer",
        "HER2-negative Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Fulvestrant",
          "type": "DRUG"
        },
        {
          "name": "Anastrozole",
          "type": "DRUG"
        },
        {
          "name": "Abemaciclib",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "University of California, Irvine",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2022-08-31",
      "completion_date": "2031-12-31",
      "has_results": false,
      "last_update_posted_date": "2026-03-11",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 1,
      "location_summary": "Orange, California",
      "locations": [
        {
          "city": "Orange",
          "state": "California"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05524584"
    },
    {
      "nct_id": "NCT06106477",
      "title": "Impact of Intermittent Fasting on Biomarkers of Inflammation and Health-Related Quality of Life: A Feasibility Trial for Women With HR+/HER2- Early Breast Cancer",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "NA"
      ],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [
        {
          "name": "Intermittent Fasting",
          "type": "BEHAVIORAL"
        }
      ],
      "intervention_types": [
        "BEHAVIORAL"
      ],
      "sponsor": "Medical College of Wisconsin",
      "sponsor_class": "OTHER",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 20,
      "start_date": "2024-07-19",
      "completion_date": "2027-07-15",
      "has_results": false,
      "last_update_posted_date": "2026-08-05",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 1,
      "location_summary": "Milwaukee, Wisconsin",
      "locations": [
        {
          "city": "Milwaukee",
          "state": "Wisconsin"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT06106477"
    },
    {
      "nct_id": "NCT04460898",
      "title": "RW Treatment Patterns and Outcomes in Postmenopausal HR+/HER2- mBC Patients Treated With Palbociclib Plus Letrozole as Initial Endocrine Therapy at Community Oncology Practices in the U.S.",
      "overall_status": "COMPLETED",
      "study_type": "OBSERVATIONAL",
      "phases": [],
      "conditions": [
        "Breast Cancer"
      ],
      "interventions": [],
      "intervention_types": [],
      "sponsor": "Pfizer",
      "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": 195,
      "start_date": "2019-01-04",
      "completion_date": "2019-06-24",
      "has_results": true,
      "last_update_posted_date": "2024-10-04",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 1,
      "location_summary": "New York, New York",
      "locations": [
        {
          "city": "New York",
          "state": "New York"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT04460898"
    },
    {
      "nct_id": "NCT07044310",
      "title": "5-strain Probiotic Formulation in HR-positive Breast Cancer Receiving Aromatase Inhibitor to Prevent Bone Loss",
      "overall_status": "RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE2"
      ],
      "conditions": [
        "Anatomic Stage 0 Breast Cancer AJCC v8",
        "Anatomic Stage I Breast Cancer AJCC v8",
        "Anatomic Stage II Breast Cancer AJCC v8",
        "Anatomic Stage III Breast Cancer AJCC v8",
        "Hormone Receptor-Positive Breast Carcinoma"
      ],
      "interventions": [
        {
          "name": "Biospecimen Collection",
          "type": "PROCEDURE"
        },
        {
          "name": "Bone Mineral Density Test",
          "type": "PROCEDURE"
        },
        {
          "name": "Questionnaire Administration",
          "type": "OTHER"
        },
        {
          "name": "WBF-038",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "PROCEDURE",
        "OTHER",
        "DRUG"
      ],
      "sponsor": "Mayo Clinic",
      "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": 38,
      "start_date": "2025-07-25",
      "completion_date": "2027-07-25",
      "has_results": false,
      "last_update_posted_date": "2026-08-10",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 1,
      "location_summary": "Jacksonville, Florida",
      "locations": [
        {
          "city": "Jacksonville",
          "state": "Florida"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT07044310"
    },
    {
      "nct_id": "NCT05546268",
      "title": "Study of Oral MRT-2359 in Selected Cancer Patients",
      "overall_status": "ACTIVE_NOT_RECRUITING",
      "study_type": "INTERVENTIONAL",
      "phases": [
        "PHASE1",
        "PHASE2"
      ],
      "conditions": [
        "NSCLC",
        "SCLC",
        "High Grade Neuroendocrine Cancer",
        "DLBCL",
        "L-MYC and N-MYC Amplified Solid Tumors",
        "NSCLC With High or Low L-MYC or N-MYC Expression",
        "HR-positive, HER2-negative Breast Cancer",
        "Prostate Cancer"
      ],
      "interventions": [
        {
          "name": "Oral MRT-2359",
          "type": "DRUG"
        }
      ],
      "intervention_types": [
        "DRUG"
      ],
      "sponsor": "Monte Rosa Therapeutics, Inc",
      "sponsor_class": "INDUSTRY",
      "healthy_volunteers": false,
      "eligibility": {
        "minimum_age": "18 Years",
        "maximum_age": null,
        "sex": "ALL",
        "summary": "18 Years and older"
      },
      "enrollment_count": 174,
      "start_date": "2022-10-12",
      "completion_date": "2027-11",
      "has_results": false,
      "last_update_posted_date": "2026-03-03",
      "last_synced_at": "2026-09-22T04:41:51.874Z",
      "location_count": 17,
      "location_summary": "Scottsdale, Arizona • San Diego, California • New Haven, Connecticut + 13 more",
      "locations": [
        {
          "city": "Scottsdale",
          "state": "Arizona"
        },
        {
          "city": "San Diego",
          "state": "California"
        },
        {
          "city": "New Haven",
          "state": "Connecticut"
        },
        {
          "city": "Lawrence",
          "state": "Kansas"
        },
        {
          "city": "Boston",
          "state": "Massachusetts"
        }
      ],
      "official_url": "https://clinicaltrials.gov/study/NCT05546268"
    }
  ]
}