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Showing 1–24 of 67 matching trials from the live ClinicalTrials.gov search.
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Filters: Condition: Hormone Receptor/Growth Factor Receptor-Negative Breast Cancer Clear all
Recruiting Phase 2 Interventional

Artificial Intelligence and Machine Learning to Guide CDK4/6 Inhibitor Rechallenge in Breast Cancer.

NCT07227233
View directory record Official record
Conditions
Breast Cancer
Interventions
A CDK4/6 inhibitor different from the first that the participant had received, plus fulvestrant., Treatment of physician's choice
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older
Enrollment
105 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 1 Interventional

HOPE: Olaparib, Palbociclib and Fulvestrant in Patients With BRCA Mutation-associated, HR+, HER2-metastatic Breast Cancer

NCT03685331
View directory record Official record
Conditions
Metastatic Breast Cancer, Locally Advanced Breast Cancer, Advanced Breast Cancer, BRCA2 Mutation, BRCA1 Mutation
Interventions
Palbociclib, Olaparib, Fulvestrant
Drug
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 8, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Active, not recruiting Phase 3 Interventional

Study of PF-07220060 With Letrozole in Adults With HR-positive HER2-negative Breast Cancer Who Have Not Received Anticancer Treatment for Advanced/Metastatic Disease

NCT06760637
View directory record Official record
Conditions
Breast Cancer
Interventions
PF-07220060, letrozole, abemaciclib, palbociclib, ribociclib
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
1,035 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2037
U.S. locations
218
States / cities
Birmingham, Alabama • Chandler, Arizona • Gilbert, Arizona + 135 more
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting Phase 1 Interventional

RADIANT: Pre-op Radiation With Abemaciclib and Letrozole

NCT06139107
View directory record Official record
Conditions
Breast Cancer
Interventions
Abemaciclib, Letrozole
Drug
Lead sponsor
Mridula George, MD
Other
Eligibility
60 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2032
U.S. locations
4
States / cities
Belleville, New Jersey • Livingston, New Jersey • New Brunswick, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Completed No phase listed Observational

TREATMENT AND MONITORING PATTERNS AND CLINICAL OUTCOMES IN PATIENTS RECEIVING PALBOCICLIB COMBINATION TREATMENT (WITH AI OR FULVESTRANT) FOR HR+/HER2- A/MBC IN A COMMUNITY ONCOLOGY SETTING.

NCT04498481
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting Phase 1 Interventional

Testing the Safety of the Combination of Anti-Cancer Drugs CX-5461 (Pidnarulex) and Trastuzumab Deruxtecan (T-DXd) for Human Epidermal Growth Factor Receptor 2 (HER2)-Positive Solid Tumors and Breast Cancer

NCT07137416
View directory record Official record
Conditions
Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Invasive Breast Carcinoma, Locally Advanced Breast Carcinoma, Metastatic Breast Carcinoma, Metastatic HER2-Low Breast Carcinoma, Metastatic HER2-Positive Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma, Metastatic Malignant Solid Neoplasm, Metastatic Triple-Negative Breast Carcinoma, Unresectable Breast Carcinoma, Unresectable HER2-Low Breast Carcinoma, Unresectable HER2-Positive Breast Carcinoma, Unresectable Hormone Receptor-Positive Breast Carcinoma, Unresectable Malignant Solid Neoplasm, Unresectable Triple-Negative Breast Carcinoma
Interventions
Biopsy Procedure, Biospecimen Collection, Echocardiography Test, Multigated Acquisition Scan, Pidnarulex, Radiologic Imaging Procedure, Trastuzumab Deruxtecan
Procedure · Drug · Biological
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts • St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

A Study of PF-06873600 in People With Cancer

NCT03519178
View directory record Official record
Conditions
HR+ HER2- Metastatic Breast Cancer, Ovarian Cancer, Fallopian Tube Cancer, Primary Peritoneal Cancer, Triple Negative Breast Cancer, Male Breast Cancer
Interventions
PF-06873600, Endocrine Therapy 1, Endocrine Therapy 2
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
155 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
39
States / cities
Birmingham, Alabama • Scottsdale, Arizona • Fayetteville, Arkansas + 22 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Capivasertib+Fulvestrant vs Placebo+Fulvestrant as Treatment for Locally Advanced (Inoperable) or Metastatic HR+/HER2- Breast Cancer

NCT04305496
View directory record Official record
Conditions
Locally Advanced (Inoperable) or Metastatic Breast Cancer
Interventions
Fulvestrant, Capivasertib, Placebo
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
818 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
22
States / cities
Gilbert, Arizona • Orange, California • San Francisco, California + 19 more
Source: ClinicalTrials.gov public record
Updated Apr 29, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Completed No phase listed Observational

A Study to Learn About the Dangers Linked to Myelosuppression (Decreased Bone Marrow Function) in Breast Cancer Patients Treated With the Study Medicine Palbociclib (Pal Bow Sai Klib)

NCT05709158
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
4,184 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jun 1, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 2 Interventional

A Study of Samuraciclib in Combination With Fulvestrant in Metastatic or Locally Advanced Breast Cancer in Adult Participants

NCT05963984
View directory record Official record
Conditions
Metastatic Breast Cancer, Locally Advanced Breast Cancer, Breast Cancer
Interventions
Samuraciclib, Fulvestrant
Drug
Lead sponsor
Carrick Therapeutics Limited
Industry
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
5
States / cities
Ocala, Florida • Baltimore, Maryland • Kansas City, Missouri + 2 more
Source: ClinicalTrials.gov public record
Updated Dec 25, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Completed No phase listed Observational

Real-life Treatment Patterns With Cyclin-dependent Kinase Inhibitors in Advanced Breast Cancer in Portugal - REVEAL Study

NCT06463626
View directory record Official record
Conditions
Hormone-receptor-positive Breast Cancer, Human Epidermal Growth Factor 2 Negative Carcinoma of Breast
Interventions
Not listed
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 17, 2024 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting Phase 2 Interventional

A Study of Alisertib in Combination With Endocrine Therapy in Patients With HR-positive, HER2-negative Recurrent or Metastatic Breast Cancer

NCT06369285
View directory record Official record
Conditions
Hormone Receptor Positive HER-2 Negative Breast Cancer, Metastatic Breast Cancer, Recurrent Breast Cancer
Interventions
Alisertib, Endocrine therapy
Drug
Lead sponsor
Puma Biotechnology, Inc.
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
35
States / cities
Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 28 more
Source: ClinicalTrials.gov public record
Updated Dec 9, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

A Study to Learn About the Study Medicine (Called PF-07220060 in Combination With PF-07104091) In Participants With Breast Cancer and Solid Tumors

NCT05262400
View directory record Official record
Conditions
Breast Cancer, Solid Tumors
Interventions
PF-07220060 + PF-07104091 combination dose escalation, PF-07104091 + PF-07220060 + fulvestrant dose expansion, PF-07104091 + PF-07220060 + letrozole dose expansion
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
192 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
12
States / cities
Los Angeles, California • Santa Monica, California • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 17, 2024 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting Phase 3 Interventional

Capivasertib + CDK4/6i + Fulvestrant for Advanced/Metastatic HR+/HER2- Breast Cancer (CAPItello-292)

NCT04862663
View directory record Official record
Conditions
Locally Advanced (Inoperable) or Metastatic Breast Cancer
Interventions
Capivasertib, Fulvestrant, Palbociclib, Ribociclib, Abemaciclib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 99 Years
Enrollment
895 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2029
U.S. locations
53
States / cities
Tucson, Arizona • Fountain Valley, California • Glendale, California + 46 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Terminated Phase 2 Interventional Results available

Study of Radium-223 Dichloride Versus Placebo and Hormonal Treatment as Background Therapy in Subjects With Bone Predominant HER2 (Human Epidermal Growth Factor Receptor 2) Negative Hormone Receptor Positive Metastatic Breast Cancer

NCT02258464
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Radium-223 dichloride (Xofigo, BAY88-8223), Placebo (saline), Background hormonal therapy
Drug · Other
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older · Female only
Enrollment
99 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
11
States / cities
Bakersfield, California • La Jolla, California • Aurora, Colorado + 8 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2020 · Synced Jul 21, 2026, 9:24 PM EDT
Terminated Phase 1 Interventional

A Study of PY314 in Subjects With Advanced Solid Tumors

NCT04691375
View directory record Official record
Conditions
Advanced Solid Tumor, Gynecologic Cancer, Breast Cancer, Colorectal Cancer, Lung Adenocarcinoma, Renal Cell Carcinoma, Triple Negative Breast Cancer, Hormone Receptor/Growth Factor Receptor-Negative Breast Cancer, Ovarian Cancer
Interventions
PY314, Combination Therapy: PY314 + Pembrolizumab
Drug
Lead sponsor
Ikena Oncology
Industry
Eligibility
18 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2023
U.S. locations
23
States / cities
Phoenix, Arizona • Scottsdale, Arizona • Duarte, California + 18 more
Source: ClinicalTrials.gov public record
Updated Mar 21, 2024 · Synced Jul 21, 2026, 9:24 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
17
States / cities
Irvine, California • Los Angeles, California • Newport Beach, California + 9 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting Phase 1Phase 2 Interventional

Study to Assess GTAEXS617 in Participants With Advanced Solid Tumors

NCT05985655
View directory record Official record
Conditions
Head and Neck Squamous Cell Carcinoma (HNSCC), Pancreatic Adenocarcinoma, Non-small Cell Lung Cancer (NSCLC), Platinum-resistant High-grade Epithelial Ovarian, Primary Peritoneal, or Fallopian Tube Cancers (HGSOC), Hormone Receptor Positive [HR+] and Human Epidermal Growth Factor Receptor 2 Negative [HER2-] Breast Carcinoma, Triple Negative Breast Cancer (TNBC)
Interventions
GTAEXS617, SoC
Drug
Lead sponsor
Exscientia AI Ltd., a wholly owned subsidiary of Recursion Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
230 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
4
States / cities
Los Angeles, California • Grand Rapids, Michigan • San Antonio, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 22, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 1 Interventional

WI231696: Bosutinib, Palbocicilib and Fulvestrant for HR+HER2- Advanced Breast Cancer Refractory to a CDK4/6 Inhibitor

NCT03854903
View directory record Official record
Conditions
Metastatic Breast Cancer, Human Epidermal Growth Factor 2 Negative Carcinoma of Breast, Hormone Receptor Positive Breast Cancer
Interventions
Palbociclib, Bosutinib, Fulvestrant
Drug
Lead sponsor
Georgetown University
Other
Eligibility
18 Years and older · Female only
Enrollment
19 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Feb 5, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Active, not recruiting Phase 1 Interventional

Study to Assess Adverse Events and Change in Disease Activity in Adult Participants With Select Advanced Solid Tumor Indications Receiving Intravenous (IV) ABBV-400

NCT06084481
View directory record Official record
Conditions
Hepatocellular Carcinoma, Pancreatic Ductal Adenocarcinoma, Biliary Tract Cancers, Esophageal Squamous Cell Carcinoma, Triple Negative Breast Cancer, Hormone Receptor+/Human Epidermal Growth Factor Receptor 2 Negative Breast Cancer, Head and Neck Squamous-Cell Carcinoma, Platinum Resistant High Grade Epithelial Ovarian Cancer
Interventions
ABBV-400, Itraconazole (ITZ)
Drug
Lead sponsor
AbbVie
Industry
Eligibility
18 Years and older
Enrollment
302 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
20
States / cities
Duarte, California • San Francisco, California • Aurora, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jan 19, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Recruiting Phase 3 Interventional

Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer

NCT06982521
View directory record Official record
Conditions
PIK3CA Mutation, HER2- Negative Breast Cancer, Hormone Receptor Positive Tumor, Breast Cancer, Metastatic Breast Cancer, Advanced Breast Cancer
Interventions
RLY-2608, Capivasertib, Fulvestrant
Drug
Lead sponsor
Relay Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
540 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
52
States / cities
Gilbert, Arizona • Beverly Hills, California • Duarte, California + 42 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 1Phase 2 Interventional Results available

A Study of Multiple Immunotherapy-Based Treatment Combinations in Hormone Receptor (HR)-Positive Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Breast Cancer

NCT03280563
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Atezolizumab (MPDL3280A), an engineered anti-programmed death-ligand 1 (PD-L1) antibody, Bevacizumab, Entinostat, Exemestane, Fulvestrant, Ipatasertib, Tamoxifen, Abemaciclib
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older · Female only
Enrollment
144 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2024
U.S. locations
14
States / cities
Birmingham, Alabama • San Francisco, California • Stanford, California + 11 more
Source: ClinicalTrials.gov public record
Updated Nov 9, 2025 · Synced Jul 21, 2026, 9:24 PM EDT
Active, not recruiting Phase 3 Interventional Results available

PALbociclib CoLlaborative Adjuvant Study

NCT02513394
View directory record Official record
Conditions
Breast Cancer
Interventions
Palbociclib, Standard Adjuvant Endocrine Therapy
Drug
Lead sponsor
Alliance Foundation Trials, LLC.
Other
Eligibility
18 Years and older
Enrollment
5,796 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2028
U.S. locations
192
States / cities
Mobile, Alabama • Anchorage, Alaska • Phoenix, Arizona + 138 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2026 · Synced Jul 21, 2026, 9:24 PM EDT
Completed Phase 2 Interventional Results available

Study of 2 Ribociclib Doses in Combination With Aromatase Inhibitors in Women With HR+, HER2- Advanced Breast Cancer

NCT03822468
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, Anastrozole, Letrozole, Goserelin
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years · Female only
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
14
States / cities
Mobile, Alabama • Greenbrae, California • Longmont, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2025 · Synced Jul 21, 2026, 9:24 PM EDT