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Fulvestrant clinical trials

Directory of U.S. ClinicalTrials.gov public records that list Fulvestrant as a study intervention. Browse Fulvestrant recruiting trials, filter by phase, sponsor, or location, and open the official ClinicalTrials.gov study record for each result.

ClinicalTrials.gov public records Last synced Oct 23, 2026, 10:58 PM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official matching trials
294
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Fulvestrant
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Showing 61–72 of 294 matching trials for Fulvestrant.
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Active, not recruiting Phase 2 Interventional

Study for Participants Continuing From Pfizer-sponsored Palbociclib (a Study Medicine) Studies

NCT05226871
View directory record Official record
Conditions
Breast Cancer, Head and Neck Cancer
Interventions
Palbociclib, Cetuximab, Fulvestrant, Letrozole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2029
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Sep 9, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 1 Interventional Results available

Testing the Addition of Copanlisib to Usual Treatment (Fulvestrant and Abemaciclib) in Metastatic Breast Cancer

NCT03939897
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Breast Carcinoma, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma, Recurrent Breast Carcinoma
Interventions
Abemaciclib, Biopsy Procedure, Biospecimen Collection, Copanlisib Hydrochloride, Diagnostic Imaging Testing, Echocardiography Test, Fulvestrant, Multigated Acquisition Scan
Drug · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • Costa Mesa, California • Orange, California + 8 more
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 1 Interventional

To Evaluate the Safety, Tolerability, and Pharmacokinetics of Inavolisib Single Agent in Participants With Solid Tumors and in Combination With Endocrine and Targeted Therapies in Participants With Breast Cancer

NCT03006172
View directory record Official record
Conditions
Breast Cancer, Solid Tumor
Interventions
Inavolisib, Fulvestrant, Letrozole, Palbociclib, Metformin, Trastuzumab, Pertuzumab
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
5
States / cities
Boston, Massachusetts • New York, New York • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 8, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Recruiting Phase 3 Interventional

Saruparib (AZD5305) Plus Camizestrant or Plus Endocrine Therapy, Compared With CDK4/6 Inhibitor Plus Endocrine Therapy or Plus Camizestrant in HR-Positive, HER2-Negative (IHC 0, 1+, 2+/ ISH Non-amplified), BRCA1, BRCA2, or PALB2m Advanced Breast Cancer

NCT06380751
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
Saruparib (AZD5305), Camizestrant, Abemaciclib, Ribociclib, Palbociclib, Fulvestrant, Letrozole, Anastrozole, Exemestane
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
788 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
57
States / cities
Gilbert, Arizona • Fountain Valley, California • Glendale, California + 49 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Preoperative Fulvestrant With or Without Enzalutamide in ER+/Her2- Breast Cancer

NCT02955394
View directory record Official record
Conditions
Breast Cancer
Interventions
Enzalutamide, Fulvestrant
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
18 Years to 101 Years · Female only
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
3
States / cities
Aurora, Colorado • New York, New York • Germantown, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 31, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Recruiting Phase 1 Interventional

A Study With NKT5097 for Adults With Advanced/Metastatic Solid Tumors

NCT07029399
View directory record Official record
Conditions
HR+ Breast Cancer, Triple Negative Breast Cancer (TNBC), CCNE1 Amplified Advanced Solid Tumors, HR+ HER2- Breast Cancer
Interventions
NKT5097 CDK2/CDK4 dual degrader, Fulvestrant, Letrozole
Drug
Lead sponsor
NiKang Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
18
States / cities
Duarte, California • La Jolla, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 2 Interventional

Study of Belzutifan (MK-6482) Plus Fulvestrant for ER+/HER2- Metastatic Breast Cancer (MK-6482-029/LITESPARK-029)

NCT06428396
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Belzutifan, Fulvestrant, Everolimus, Exemestane
Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
14
States / cities
Goodyear, Arizona • Beverly Hills, California • La Jolla, California + 11 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Recruiting Phase 1Phase 2 Interventional

Study of ECI830 Single Agent or in Combination in Patients With Advanced HR+/HER2- Breast Cancer and in Patients With Other Advanced Solid Tumors

NCT06726148
View directory record Official record
Conditions
Advanced HR+/HER2- Breast Cancer, Advanced CCNE1-amplified Solid Tumors, Extensive-stage Small Cell Lung Cancer
Interventions
ECI830, ribociclib, fulvestrant
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
280 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
8
States / cities
Los Angeles, California • Fort Myers, Florida • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 2 Interventional Results available

A Study to Investigate Efficacy and Safety With Oral AZD9833 Compared With Intramuscular Fulvestrant in Post-menopausal Women at Least 18 Years of Age With Advanced ER-positive HER2 Negative Breast Cancer

NCT04214288
View directory record Official record
Conditions
Advanced ER-Positive HER2-Negative Breast Cancer
Interventions
AZD9833, Fulvestrant
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years · Female only
Enrollment
240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
9
States / cities
Birmingham, Alabama • Long Beach, California • Fort Myers, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Basket Study of Tucatinib and Trastuzumab in Solid Tumors With HER2 Alterations

NCT04579380
View directory record Official record
Conditions
Uterine Neoplasms, Uterine Cervical Neoplasms, Biliary Tract Neoplasms, Urologic Neoplasms, Carcinoma, Non-Small-Cell Lung, HER2 Mutations Breast Neoplasms
Interventions
tucatinib, trastuzumab, fulvestrant
Drug
Lead sponsor
Seagen, a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
76
States / cities
Phoenix, Arizona • Tempe, Arizona • Tucson, Arizona + 47 more
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Active, not recruiting Phase 2 Interventional

A Study to Learn About the Study Medicine Called PF-07220060 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment

NCT06105632
View directory record Official record
Conditions
Advanced or Metastatic Breast Cancer
Interventions
PF-07220060 CDK4 inhibitor, Fulvestrant, Everolimus, Exemestane
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
9
States / cities
Irvine, California • Los Angeles, California • Newport Beach, California + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Oct 23, 2026, 10:58 PM EDT
Terminated Phase 1 Interventional

Study of the Kinesin Oral Molecular Degrader BBI-940 in Subjects With Advanced or Metastatic Breast Cancer

NCT07408089
View directory record Official record
Conditions
Breast Cancer, Metastatic Breast Cancer, Advanced Breast Cancer
Interventions
BBI-940, Fulvestrant
Drug
Lead sponsor
Boundless Bio, Inc.
Industry
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
8
States / cities
Los Angeles, California • Lake Success, New York • Austin, Texas + 4 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Oct 23, 2026, 10:58 PM EDT

About this Fulvestrant clinical trials directory page

What this page lists
U.S. ClinicalTrials.gov public records that list Fulvestrant as a study intervention, including recruiting, not yet recruiting, and active not recruiting trials.
How to narrow results
Use the filters above to scope by condition, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, age, or NCT ID within Fulvestrant.
Where the data comes from
Records are sourced from the official ClinicalTrials.gov public API. Each result links back to the official study page, which is the source of truth for eligibility, enrollment, and contact information.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, ranking of trials by quality, or AI-generated medical summaries.

Related: all therapy pages, browse by condition, browse by U.S. city, browse by sponsor, or open the full search for Fulvestrant.