{ "api_version": "1", "request": { "url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Arvinas+Estrogen+Receptor%2C+Inc.", "query": { "sponsor": "Arvinas Estrogen Receptor, Inc." }, "page_size": 10 }, "pagination": { "page": 1, "page_size": 10, "total_count": 13, "total_pages": 2, "next_page_url": "https://clinicaltrialsfind.com/api/v1/search.json?sponsor=Arvinas+Estrogen+Receptor%2C+Inc.&page=2&page_size=10", "previous_page_url": null }, "source": "remote", "last_synced_at": "2026-10-06T02:10:07.048Z", "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": "NCT06206837", "title": "A Study to Learn About Vepdegestrant When Given With PF-07220060 to People With Advanced or Metastatic Breast Cancer.", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Breast Cancer" ], "interventions": [ { "name": "vepdegestrant", "type": "DRUG" }, { "name": "PF-07220060", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 71, "start_date": "2024-02-19", "completion_date": "2027-05-25", "has_results": true, "last_update_posted_date": "2026-09-30", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 34, "location_summary": "Fayetteville, Arkansas • Rogers, Arkansas • Springdale, Arkansas + 22 more", "locations": [ { "city": "Fayetteville", "state": "Arkansas" }, { "city": "Rogers", "state": "Arkansas" }, { "city": "Springdale", "state": "Arkansas" }, { "city": "Irvine", "state": "California" }, { "city": "Irvine", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT06206837" }, { "nct_id": "NCT05654623", "title": "A Study to Learn About a New Medicine Called Vepdegestrant (ARV-471, PF-07850327) in People Who Have Advanced Metastatic Breast Cancer", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Advanced Breast Cancer" ], "interventions": [ { "name": "ARV-471", "type": "DRUG" }, { "name": "Fulvestrant", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 624, "start_date": "2023-03-03", "completion_date": "2028-05-15", "has_results": true, "last_update_posted_date": "2026-03-18", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 87, "location_summary": "Encinitas, California • Fountain Valley, California • Fresno, California + 69 more", "locations": [ { "city": "Encinitas", "state": "California" }, { "city": "Fountain Valley", "state": "California" }, { "city": "Fresno", "state": "California" }, { "city": "Napa", "state": "California" }, { "city": "San Marcos", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT05654623" }, { "nct_id": "NCT06347861", "title": "A Study to Learn How Various Tablets of the Study Medicine Vepdegestrant Are Taken up Into the Blood of Healthy Adults", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy" ], "interventions": [ { "name": "single dose of vepdegestrant as tablet formulation (Treatment A)", "type": "DRUG" }, { "name": "single dose of vepdegestrant as tablet formulation (Treatment B)", "type": "DRUG" }, { "name": "single dose of vepdegestrant as tablet formulation (Treatment C)", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 52, "start_date": "2024-04-02", "completion_date": "2024-08-08", "has_results": false, "last_update_posted_date": "2024-10-01", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 1, "location_summary": "Saint Paul, Minnesota", "locations": [ { "city": "Saint Paul", "state": "Minnesota" } ], "official_url": "https://clinicaltrials.gov/study/NCT06347861" }, { "nct_id": "NCT05548127", "title": "TACTIVE-U: A Study to Learn About the Study Medicine (Vepdegestrant) When Given With Other Medicines in People With Advanced or Metastatic Breast Cancer (Sub-Study A)", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Breast Cancer" ], "interventions": [ { "name": "ARV-471", "type": "DRUG" }, { "name": "Abemaciclib", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 37, "start_date": "2023-02-23", "completion_date": "2027-03-24", "has_results": false, "last_update_posted_date": "2026-09-02", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 23, "location_summary": "Palo Alto, California • San Francisco, California • Tampa, Florida + 11 more", "locations": [ { "city": "Palo Alto", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Tampa", "state": "Florida" }, { "city": "Tampa", "state": "Florida" }, { "city": "Tampa", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT05548127" }, { "nct_id": "NCT07231991", "title": "A Study to Learn How the Body Processes the Study Medicine Called Vepdegestrant in People With Loss of Liver Function", "overall_status": "RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy Participants" ], "interventions": [ { "name": "vepdegestrant", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "70 Years", "sex": "ALL", "summary": "18 Years to 70 Years" }, "enrollment_count": 24, "start_date": "2025-11-18", "completion_date": "2026-12-23", "has_results": false, "last_update_posted_date": "2026-04-03", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 4, "location_summary": "Miami, Florida • Miami Lakes, Florida • Orlando, Florida + 1 more", "locations": [ { "city": "Miami", "state": "Florida" }, { "city": "Miami Lakes", "state": "Florida" }, { "city": "Orlando", "state": "Florida" }, { "city": "Tampa", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT07231991" }, { "nct_id": "NCT05652660", "title": "A Study to Understand the Effect of a Study Medicine Called ARV-471 on Rosuvastatin in Healthy Adults", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy" ], "interventions": [ { "name": "ARV-471", "type": "DRUG" }, { "name": "Rosuvastatin", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": "65 Years", "sex": "ALL", "summary": "18 Years to 65 Years" }, "enrollment_count": 12, "start_date": "2022-12-09", "completion_date": "2023-03-06", "has_results": true, "last_update_posted_date": "2024-07-26", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 1, "location_summary": "New Haven, Connecticut", "locations": [ { "city": "New Haven", "state": "Connecticut" } ], "official_url": "https://clinicaltrials.gov/study/NCT05652660" }, { "nct_id": "NCT06125522", "title": "TACTIVE-U: A Study to Learn About the Study Medicine (Vepdegestrant) When Given With Other Medicines in People With Advanced or Metastatic Breast Cancer. (Sub-Study C)", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Breast Cancer" ], "interventions": [ { "name": "vepdegestrant", "type": "DRUG" }, { "name": "Samuraciclib", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 11, "start_date": "2024-01-10", "completion_date": "2026-09-10", "has_results": false, "last_update_posted_date": "2026-10-02", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 19, "location_summary": "Fayetteville, Arkansas • Rogers, Arkansas • Springdale, Arkansas + 9 more", "locations": [ { "city": "Fayetteville", "state": "Arkansas" }, { "city": "Rogers", "state": "Arkansas" }, { "city": "Springdale", "state": "Arkansas" }, { "city": "Palo Alto", "state": "California" }, { "city": "Palo Alto", "state": "California" } ], "official_url": "https://clinicaltrials.gov/study/NCT06125522" }, { "nct_id": "NCT06275841", "title": "A Study to Learn If the Study Medicine Esomeprazole Changes How the Body Processes the Other Study Medicine Vepdegestrant", "overall_status": "COMPLETED", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1" ], "conditions": [ "Healthy" ], "interventions": [ { "name": "vepdegestrant", "type": "DRUG" }, { "name": "esomeprazole", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": true, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 12, "start_date": "2024-02-23", "completion_date": "2024-05-24", "has_results": false, "last_update_posted_date": "2024-06-03", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 1, "location_summary": "New Haven, Connecticut", "locations": [ { "city": "New Haven", "state": "Connecticut" } ], "official_url": "https://clinicaltrials.gov/study/NCT06275841" }, { "nct_id": "NCT05573555", "title": "TACTIVE-U: A Study to Learn About the Study Medicine (Vepdegestrant) When Given With Other Medicines in People With Advanced or Metastatic Breast Cancer (Sub-Study B)", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE1", "PHASE2" ], "conditions": [ "Breast Cancer" ], "interventions": [ { "name": "ARV-471", "type": "DRUG" }, { "name": "Ribociclib", "type": "DRUG" } ], "intervention_types": [ "DRUG" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 20, "start_date": "2023-03-01", "completion_date": "2026-12-30", "has_results": false, "last_update_posted_date": "2026-03-09", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 20, "location_summary": "Palo Alto, California • San Francisco, California • Tampa, Florida + 7 more", "locations": [ { "city": "Palo Alto", "state": "California" }, { "city": "San Francisco", "state": "California" }, { "city": "Tampa", "state": "Florida" }, { "city": "Tampa", "state": "Florida" }, { "city": "Tampa", "state": "Florida" } ], "official_url": "https://clinicaltrials.gov/study/NCT05573555" }, { "nct_id": "NCT05909397", "title": "Vepdegestrant (ARV-471/PF-07850327) + Palbociclib vs Letrozole + Palbociclib in ER(+)/HER2(-) Advanced Breast Cancer", "overall_status": "ACTIVE_NOT_RECRUITING", "study_type": "INTERVENTIONAL", "phases": [ "PHASE3" ], "conditions": [ "Breast Cancer" ], "interventions": [ { "name": "Vepdegestrant (ARV-471/PF-07850327)", "type": "DRUG" }, { "name": "Palbociclib", "type": "COMBINATION_PRODUCT" }, { "name": "Letrozole", "type": "DRUG" } ], "intervention_types": [ "DRUG", "COMBINATION_PRODUCT" ], "sponsor": "Pfizer", "sponsor_class": "INDUSTRY", "healthy_volunteers": false, "eligibility": { "minimum_age": "18 Years", "maximum_age": null, "sex": "ALL", "summary": "18 Years and older" }, "enrollment_count": 59, "start_date": "2023-08-09", "completion_date": "2026-12-30", "has_results": false, "last_update_posted_date": "2026-02-10", "last_synced_at": "2026-10-06T02:10:07.048Z", "location_count": 3, "location_summary": "Plantation, Florida • Norfolk, Virginia", "locations": [ { "city": "Plantation", "state": "Florida" }, { "city": "Plantation", "state": "Florida" }, { "city": "Norfolk", "state": "Virginia" } ], "official_url": "https://clinicaltrials.gov/study/NCT05909397" } ] }