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ClinicalTrials.gov public records Last synced Jul 23, 2026, 10:22 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: Hormone Receptor Positive, HER2 Negative Breast Cancer Clear all
Active, not recruiting Phase 3 Interventional

Study of Pembrolizumab (MK-3475) Plus Chemotherapy Versus Placebo Plus Chemotherapy for HR+/HER2- Locally Recurrent Inoperable or Metastatic Breast Cancer (MK-3475-B49/KEYNOTE-B49)

NCT04895358
View directory record Official record
Conditions
Breast Neoplasms
Interventions
pembrolizumab, paclitaxel, nab-paclitaxel, liposomal doxorubicin, capecitabine, normal saline, dextrose
Biological · Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
342 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
41
States / cities
Birmingham, Alabama • Tucson, Arizona • Monterey, California + 33 more
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Terminated No phase listed Observational

Analysis of Letrozole in Patients With Operable Hormone Receptor Positive, HER2 Negative Breast Cancer

NCT05447910
View directory record Official record
Conditions
Breast Adenocarcinoma, Invasive Breast Carcinoma, Resectable Breast Carcinoma
Interventions
Biospecimen Collection
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated Jun 14, 2025 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting Phase 1 Interventional

Study of IEV407 as Single Agent or in Combination in Patients With Advanced HR+/HER2- Breast Cancer

NCT07604571
View directory record Official record
Conditions
Advanced HR+/HER2- Breast Cancer
Interventions
IEV407, Fulvestrant, Letrozole
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
194 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2032
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jun 29, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting Phase 1 Interventional

BGB-21447 (Bcl-2 Inhibitor) Combinations for Adults With Hormone-Receptor Positive (HR+)/Human Epidermal Growth Factor Receptor 2 Negative (HER2-) Metastatic Breast Cancer

NCT06756932
View directory record Official record
Conditions
Hormone-receptor-positive Breast Cancer, HER2-negative Breast Cancer, Metastatic Breast Cancer
Interventions
BGB-21447, Fulvestrant, BGB-43395
Drug
Lead sponsor
BeOne Medicines
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
3
States / cities
Iowa City, Iowa • Houston, Texas • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 21, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Active, not recruiting Phase 2 Interventional

PF-07104091 as a Single Agent and in Combination Therapy

NCT04553133
View directory record Official record
Conditions
Small Cell Lung Cancer, Ovarian Cancer, Breast Cancer
Interventions
PF-07104091 monotherapy dose escalation, PF-07104091 + palbociclib + fulvestrant, PF-07104091 + palbociclib + letrozole, PF-07104091 monotherapy dose expansion (ovarian), PF-07104091 monotherapy dose expansion (SCLC), PF-07104091 + Fulvestrant (post CDK4/6), PF-0704091 + Fulvestrant (post CDK4/6)
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
157 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
17
States / cities
Clive, Iowa • Des Moines, Iowa • Louisville, Kentucky + 7 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Completed No phase listed Observational

A Real-world Study of Effectiveness and Safety in HR+/HER2- Breast Cancer Patients Treated With Ribociclib or Alpelisib

NCT06705504
View directory record Official record
Conditions
Hormone Receptor Positive HER-2 Negative Breast Cancer
Interventions
Not listed
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
435 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 25, 2024 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting Phase 2 Interventional

A Phase II Study Evaluating the Efficacy and Safety of Inavolisib Plus Ribociclib Plus Fulvestrant Versus Placebo Plus Ribociclib Plus Fulvestrant in Participants With Advanced Breast Cancer

NCT07405801
View directory record Official record
Conditions
Breast Cancer
Interventions
Inavolisib, Ribociclib, Fulvestrant, Placebo
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
80 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
6
States / cities
Marshall, Minnesota • Aberdeen, South Dakota • Mitchell, South Dakota + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

Study of Radium-223 Dichloride in Combination With Exemestane and Everolimus Versus Placebo in Combination With Exemestane and Everolimus in Subjects With Bone Predominant HER2 Negative Hormone Receptor Positive Metastatic Breast Cancer

NCT02258451
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Radium-223 dichloride (Xofigo, BAY88-8223), Placebo (saline), Exemestane, Everolimus
Drug
Lead sponsor
Bayer
Industry
Eligibility
18 Years and older · Female only
Enrollment
283 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2022
U.S. locations
15
States / cities
La Jolla, California • Los Angeles, California • New Haven, Connecticut + 12 more
Source: ClinicalTrials.gov public record
Updated Nov 23, 2023 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting Not applicable Interventional

Screening Magnetic Resonance Imaging of the Brain in Patients With Breast Cancer

NCT04030507
View directory record Official record
Conditions
Breast Cancer, HER2-positive Breast Cancer, Triple Negative Breast Cancer, Hormone Receptor Positive Malignant Neoplasm of Breast, Inflammatory Breast Cancer, Metastatic Breast Cancer
Interventions
MRI
Device
Lead sponsor
Brigham and Women's Hospital
Other
Eligibility
18 Years and older
Enrollment
214 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2028
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 18, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting No phase listed Observational

DiviTum®TKa: A Biomarker Assay for Efficacy in HR+ Breast Cancer Patients

NCT06388122
View directory record Official record
Conditions
HER2-negative Breast Cancer, Hormone-receptor-positive Breast Cancer, Metastatic Breast Cancer, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, HER2 Negative Breast Carcinoma, Hormone Receptor Positive Breast Carcinoma, Metastatic Breast Carcinoma
Interventions
Biospecimen Collection
Procedure
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
1
States / cities
Jacksonville, Florida
Source: ClinicalTrials.gov public record
Updated May 31, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

Randomized Phase II Trial of Letrozole With or Without Dasatinib as First and Second-line Treatment for Hormone Receptor-positive, HER2-negative Post-menopausal Breast Cancer That is Unresectable, Locally Recurrent or Metastatic

NCT00696072
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Dasatinib, Letrozole
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
27
States / cities
Sedona, Arizona • Tucson, Arizona • Denver, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 12, 2016 · Synced Jul 23, 2026, 10:22 AM EDT
Completed Phase 2 Interventional

Mucoadhesive Oral Wound Rinse in Preventing and Treating Stomatitis in Patients With ER- or PR-Positive Metastatic or Locally Recurrent Breast Cancer That Cannot be Removed by Surgery Receiving Everolimus

NCT02015559
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Oral Complications, Progesterone Receptor-positive Breast Cancer, Recurrent Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer
Interventions
mucoadhesive oral wound rinse, laboratory biomarker analysis
Drug · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Sep 20, 2020 · Synced Jul 23, 2026, 10:22 AM EDT
Active, not recruiting Phase 2 Interventional

Radiation Therapy Before Surgery in Treating Patients With Hormone Receptor Positive, HER2 Negative Breast Cancer

NCT03359954
View directory record Official record
Conditions
Estrogen Receptor Positive, HER2/Neu Negative, Invasive Breast Carcinoma, Progesterone Receptor Positive
Interventions
Radiation Therapy, Therapeutic Conventional Surgery
Radiation · Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 4, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Active, not recruiting Phase 2 Interventional

Evaluation of a Once Per Day Regimen of Accelerated Partial Breast Irradiation for Improved Breast Appearance in Pts w/Low Risk, Hormone Responsive Brst Ca

NCT06008158
View directory record Official record
Conditions
Anatomic Stage 0 Breast Cancer AJCC v8, Anatomic Stage IA Breast Cancer AJCC v8, Estrogen Receptor-Positive Breast Carcinoma, HER2-Negative Breast Carcinoma
Interventions
Accelerated Partial Breast Irradiation
Radiation
Lead sponsor
City of Hope Medical Center
Other
Eligibility
40 Years and older · Female only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated Jun 28, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting Phase 1Phase 2 Interventional

Study of GVV858 as a Single Agent or in Combination With Endocrine Therapy in Patients With HR+/HER2- Breast Cancer and Other Advanced Solid Tumors

NCT07288359
View directory record Official record
Conditions
Advanced HR+/HER2- Breast Cancer, Advanced CCNE1-amplified Solid Tumors, Metastatic Castration-resistant Prostate Cancer
Interventions
GVV858, Fulvestrant, Letrozole
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
205 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
2
States / cities
Nashville, Tennessee • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Recruiting Phase 2 Interventional

Tirzepatide Weight Loss for MRD+ Early Breast Cancer

NCT06517212
View directory record Official record
Conditions
Breast Cancer, Breast Neoplasms, Breast Cancers
Interventions
Tirzepatide
Drug
Lead sponsor
Baylor Research Institute
Other
Eligibility
18 Years and older
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2030
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Feb 11, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Completed Phase 1 Interventional

Phase Ib, Dose Escalation Study of Oral LDE225 in Combination With BKM120 in Patients With Advanced Solid Tumors

NCT01576666
View directory record Official record
Conditions
Dose Escalation, Safety, Preliminary Efficacy, Advanced Solid Tumors, Metastatic Breast Cancer, Advanced Pancreatic Adenocarcinoma, Metastatic Colorectal Cancer, Recurrent Glioblastoma Multiforme, Gastric Cancer, Gastroesophageal Junction Cancer, Triple Negative Metastatic Breast Cancer, Hormone Receptor Positive (ER+/PR+, and Her2-) Metastatic Breast Cancer
Interventions
LDE225, BKM120
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
13
States / cities
Los Angeles, California • San Francisco, California • Tampa, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2020 · Synced Jul 23, 2026, 10:22 AM EDT
Terminated Phase 2 Interventional

Tesetaxel Plus Reduced Dose of Capecitabine in Patients With HER2 Negative, HR Positive, LA/MBC

NCT03858972
View directory record Official record
Conditions
Breast Cancer
Interventions
Tesetaxel, Capecitabine
Drug
Lead sponsor
Odonate Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
9
States / cities
Whittier, California • Lakewood, Colorado • Fort Myers, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Jul 23, 2026, 10:22 AM 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 23, 2026, 10:22 AM EDT
Recruiting Phase 1Phase 2 Interventional

First-in-Human Study of Tersolisib (STX-478) as Monotherapy and in Combination With Other Antineoplastic Agents in Participants With Advanced Solid Tumors

NCT05768139
View directory record Official record
Conditions
Breast Cancer, Solid Tumors, Adult
Interventions
STX-478, Fulvestrant, Ribociclib, Palbociclib, Letrozole, Anastrozole, Exemestane, Tamoxifen, Abemaciclib, Imlunestrant, Metformin
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
880 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
28
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jul 6, 2026 · Synced Jul 23, 2026, 10:22 AM EDT
Completed Phase 2 Interventional Results available

ONC201 in Recurrent/Refractory Metastatic Breast Cancer and Advanced Endometrial Carcinoma

NCT03394027
View directory record Official record
Conditions
Triple Negative Breast Cancer, Endometrial Cancer, Hormone Receptor Positive, HER2 Negative Breast Cancer
Interventions
ONC201
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
1
States / cities
Bethesda, Maryland
Source: ClinicalTrials.gov public record
Updated Aug 22, 2022 · Synced Jul 23, 2026, 10:22 AM EDT
Terminated Phase 2 Interventional Results available

Hormone Therapy and Combination Chemotherapy Before and After Surgery in Treating Patients With Stage I-IIIA Breast Cancer

NCT00194792
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer
Interventions
exemestane, triptorelin pamoate, capecitabine, methotrexate, vinorelbine tartrate, paclitaxel, therapeutic conventional surgery, radiation therapy, laboratory biomarker analysis
Drug · Procedure · Radiation + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 10, 2017 · Synced Jul 23, 2026, 10:22 AM 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 23, 2026, 10:22 AM 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 23, 2026, 10:22 AM EDT