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ClinicalTrials.gov public records Last synced Sep 17, 2026, 1:00 PM EDT

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Showing 1–24 of 574 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: ER+ Breast Cancer Clear all
Active, not recruiting Phase 2 Interventional Results available

Letrozole Plus Ribociclib or Placebo as Neo-adjuvant Therapy in ER-positive, HER2-negative Early Breast Cancer

NCT02712723
View directory record Official record
Conditions
Breast Cancer
Interventions
Letrozole, Ribociclib, Placebo
Drug
Lead sponsor
Qamar Khan
Other
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2026
U.S. locations
13
States / cities
Little Rock, Arkansas • Duarte, California • Santa Ana, California + 9 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional

Letrozole, Herceptin in Her2neu +, Estrogen Receptor [ER] and/or Progesterone Receptor [PR] Positive, MBC

NCT00134680
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Letrozole, Trastuzumab
Drug
Lead sponsor
Duke University
Other
Eligibility
18 Years and older · Female only
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2000 – 2005
U.S. locations
4
States / cities
Washington D.C., District of Columbia • Boston, Massachusetts • St Louis, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2014 · Synced Sep 17, 2026, 1:00 PM EDT
Recruiting Phase 2 Interventional

EMERALD: Endocrine Therapy oMission With Radiation in ER+ Breast Cancer: Assessing Quality of Life and Disease Control: a Prospective Phase II Trial

NCT06897488
View directory record Official record
Conditions
Breast Cancer
Interventions
Adjuvant Radiotherapy
Radiation
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
60 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 14, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional Results available

Platinum for Triple-Negative Metastatic Breast Cancer and Evaluation of p63/p73 as a Biomarker of Response

NCT00483223
View directory record Official record
Conditions
Breast Cancer
Interventions
Cisplatin, carboplatin
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
86 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
10
States / cities
Birmingham, Alabama • San Francisco, California • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2017 · Synced Sep 17, 2026, 1:00 PM EDT
Recruiting Phase 2 Interventional

DATO-BASE: DATOpotamab-deruxtecan for Breast Cancer Brain metAstaSEs

NCT06176261
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female, Metastatic Triple-Negative Breast Carcinoma, ER Positive Breast Cancer, HER2-negative Breast Cancer, HER2 Negative Breast Carcinoma, ER-negative Breast Cancer
Interventions
Datopotamab Deruxtecan
Drug
Lead sponsor
Nancy Lin, MD
Other
Eligibility
18 Years and older
Enrollment
58 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2029
U.S. locations
3
States / cities
Miami, Florida • Boston, Massachusetts • Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Aug 5, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Recruiting Phase 1Phase 2 Interventional

A Study Evaluating the Efficacy and Safety of Multiple Treatment Combinations in Participants With Breast Cancer

NCT04802759
View directory record Official record
Conditions
Inoperable, Locally Advanced or Metastatic, ER-positive Breast Cancer
Interventions
Giredestrant, Abemaciclib, Ipatasertib, Inavolisib, Ribociclib, Everolimus, Samuraciclib, PH FDC SC, Palbociclib, Atezolizumab
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older · Female only
Enrollment
316 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2029
U.S. locations
12
States / cities
Duarte, California • Irvine, California • San Francisco, California + 9 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional

A Study Evaluating INIPARIB in Combination With Chemotherapy to Treat Triple Negative Breast Cancer Brain Metastasis

NCT01173497
View directory record Official record
Conditions
Estrogen Receptor Negative (ER-Negative) Breast Cancer, Progesterone Receptor Negative (PR-Negative) Breast Cancer, Human Epidermal Growth Factor Receptor 2 Negative (HER2-Negative) Breast Cancer, Brain Metastases
Interventions
INIPARIB + irinotecan
Drug
Lead sponsor
Sanofi
Industry
Eligibility
21 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
13
States / cities
Birmingham, Alabama • San Francisco, California • Washington D.C., District of Columbia + 10 more
Source: ClinicalTrials.gov public record
Updated Mar 16, 2016 · Synced Sep 17, 2026, 1:00 PM EDT
Not yet recruiting Phase 2 Interventional

Neu Direction: Testing the Efficacy of Adding HER Inhibition to Standard of Care in Metastatic MLH1-low Endocrine-resistant ER+/HER2- Breast Cancer

NCT07729046
View directory record Official record
Conditions
Metastatic Invasive Breast Cancer, Resistant Breast Cancer, ER+, HER2-, Metastatic Breast Cancer
Interventions
Neratinib + endocrine therapy, Endocrine therapy may include one of the following therapies: letrozole, anastrozole, exemestane, tamoxifen or fulvestrant, CDK4/6 + Endocrine therapy
Drug
Lead sponsor
University of California, San Diego
Other
Eligibility
18 Years and older · Female only
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2027 – 2035
U.S. locations
1
States / cities
La Jolla, California
Source: ClinicalTrials.gov public record
Updated Jul 26, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Terminated Phase 1 Interventional

A Study of AC682 for the Treatment of Locally Advanced or Metastatic ER+ Breast Cancer

NCT05080842
View directory record Official record
Conditions
Breast Cancer
Interventions
AC682
Drug
Lead sponsor
Accutar Biotechnology Inc
Industry
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
5
States / cities
Denver, Colorado • Orlando, Florida • Sarasota, Florida + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 12, 2025 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional Results available

Doxorubicin Hydrochloride, Cyclophosphamide, and Filgrastim Followed By Paclitaxel Albumin-Stabilized Nanoparticle Formulation With or Without Trastuzumab in Treating Patients With Breast Cancer Previously Treated With Surgery

NCT00407888
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-positive Breast Cancer, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer
Interventions
doxorubicin hydrochloride, cyclophosphamide, filgrastim, paclitaxel albumin-stabilized nanoparticle formulation, trastuzumab, laboratory biomarker analysis, quality-of-life assessment
Drug · Biological · Other + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Sep 17, 2026, 1:00 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

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)

NCT06125522
View directory record Official record
Conditions
Breast Cancer
Interventions
vepdegestrant, Samuraciclib
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
17
States / cities
Fayetteville, Arkansas • Rogers, Arkansas • Springdale, Arkansas + 9 more
Source: ClinicalTrials.gov public record
Updated May 5, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional Results available

Pembrolizumab and Carboplatin in Treating Patients With Circulating Tumor Cells Positive Metastatic Breast Cancer

NCT03213041
View directory record Official record
Conditions
Estrogen Receptor Negative, Estrogen Receptor Positive, HER2/Neu Negative, Progesterone Receptor Negative, Recurrent Breast Carcinoma, Stage IV Breast Cancer, Triple-Negative Breast Carcinoma
Interventions
Carboplatin, Laboratory Biomarker Analysis, Pembrolizumab
Drug · Other · Biological
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 16, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Recruiting Phase 1Phase 2 Interventional

A Study of Lenvatinib, Pembrolizumab, and Fulvestrant in People With Breast Cancer

NCT06110793
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Lenvatinib, Pembrolizuma, Fulvestrant
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 1 Interventional

Study to Assess Food Effect on Pharmacokinetics of Entinostat in Subjects With Breast Cancer or Non-Small Cell Lung Cancer

NCT01594398
View directory record Official record
Conditions
Lung Cancer, Non Small Cell Lung Cancer (NSCLC), Breast Cancer, Estrogen Receptor Breast Cancer
Interventions
entinostat, Erlotinib, Exemestane
Drug
Lead sponsor
Syndax Pharmaceuticals
Industry
Eligibility
18 Years to 90 Years
Enrollment
14 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2014
U.S. locations
3
States / cities
Sarasota, Florida • Oklahoma City, Oklahoma • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Nov 18, 2021 · Synced Sep 17, 2026, 1:00 PM EDT
Recruiting Phase 2 Interventional

A Study on Adding Precisely Targeted Radiation Therapy (Stereotactic Body Radiation Therapy) to the Usual Treatment Approach (Drug Therapy) in People With Breast Cancer

NCT05534438
View directory record Official record
Conditions
Oligometastatic Breast Carcinoma, Breast Cancer, Metastatic Breast Cancer, Metastatic Breast Carcinoma, ER+ Breast Cancer, HER2+ Breast Cancer
Interventions
Stereotactic body radiotherapy
Radiation
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
8
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 5 more
Source: ClinicalTrials.gov public record
Updated Jul 9, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Early Phase 1 Interventional

Broccoli Sprout Extract in Treating Patients With Breast Cancer

NCT01753908
View directory record Official record
Conditions
Ductal Breast Carcinoma, Ductal Breast Carcinoma In Situ, Estrogen Receptor Negative, Estrogen Receptor Positive, Invasive Breast Carcinoma, Lobular Breast Carcinoma, Postmenopausal, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage IIA Breast Cancer, Stage IIB Breast Cancer
Interventions
Broccoli Sprout Extract, Laboratory Biomarker Analysis, Pharmacological Study, Placebo
Drug · Other
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
21 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Oct 30, 2019 · Synced Sep 17, 2026, 1:00 PM EDT
Terminated Early Phase 1 Interventional

[18F]Fluoroestradiol-PET/CT Companion Imaging Study to the FORESEE Trial

NCT04727632
View directory record Official record
Conditions
Estrogen Receptor Positive Breast Cancer
Interventions
[18F]Fluoroestradiol (FES) PET/CT
Drug
Lead sponsor
University of Utah
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Salt Lake City, Utah
Source: ClinicalTrials.gov public record
Updated Oct 27, 2024 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 1 Interventional Results available

A Study of Giredestrant (GDC-9545) in Postmenopausal Women With Stage I-III Operable, Estrogen Receptor-Positive Breast Cancer

NCT03916744
View directory record Official record
Conditions
Breast Cancer
Interventions
Giredestrant, Surgery
Drug · Procedure
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
75 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
3
States / cities
Aurora, Colorado • Boston, Massachusetts • New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 9, 2023 · Synced Sep 17, 2026, 1:00 PM EDT
Active, not recruiting Phase 1 Interventional

Phase 1b Study of OP-1250 (Palazestrant) in Combination With Ribociclib, Alpelisib, Everolimus, or Atirmociclib in ER+, HER2- Breast Cancer

NCT05508906
View directory record Official record
Conditions
Metastatic Breast Cancer, ER-positive Breast Cancer, HER2-negative Breast Cancer, Breast Cancer, Locally Advanced Breast Cancer
Interventions
Palazestrant, Ribociclib, Alpelisib, Everolimus, Atirmociclib
Drug
Lead sponsor
Olema Pharmaceuticals, Inc.
Industry
Eligibility
18 Years and older
Enrollment
190 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2028
U.S. locations
14
States / cities
Gilbert, Arizona • San Francisco, California • Aurora, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 1 Interventional

BYL719 and Letrozole in Post-Menopausal Patients With Hormone Receptor-Positive Metastatic Breast Cancer

NCT01791478
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Invasive Ductal Breast Carcinoma, Progesterone Receptor-positive Breast Cancer, Recurrent Breast Cancer, Stage IV Breast Cancer
Interventions
PI3K inhibitor BYL719, letrozole, laboratory biomarker analysis, pharmacological studies
Drug · Other
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
2
States / cities
Boston, Massachusetts • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Aug 18, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Not applicable Interventional

Lifestyle Intervention Study in Adjuvant Treatment of Early Breast Cancer

NCT00463489
View directory record Official record
Conditions
Breast Cancer
Interventions
Lifestyle intervention, Mail-based
Behavioral
Lead sponsor
Ontario Clinical Oncology Group (OCOG)
Other
Eligibility
Female only
Enrollment
338 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2018
U.S. locations
4
States / cities
Torrance, California • Boston, Massachusetts • Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Sep 25, 2018 · Synced Sep 17, 2026, 1:00 PM EDT
Recruiting Not applicable Interventional

Supporting Health Including Endocrine Treatment for Long Duration

NCT07482384
View directory record Official record
Conditions
Breast Cancer, Breast Cancer - Female, Breast Carcinoma, ER Positive Breast Cancer, PR-Positive Breast Cancer
Interventions
SHIELD portal
Behavioral
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years to 49 Years · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 9, 2026 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional Results available

Phase II Trial of SAHA & Tamoxifen for Patients With Breast Cancer

NCT00365599
View directory record Official record
Conditions
Breast Cancer
Interventions
suberoylanilide hydroxamic acid (SAHA, Vorinostat), tamoxifen citrate (Tamoxifen)
Drug
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2012
U.S. locations
8
States / cities
San Francisco, California • Boynton Beach, Florida • Orlando, Florida + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 20, 2014 · Synced Sep 17, 2026, 1:00 PM EDT
Completed Phase 2 Interventional Results available

A Phase II Study of Everolimus in Combination With Exemestane Versus Everolimus Alone Versus Capecitabine in Advance Breast Cancer.

NCT01783444
View directory record Official record
Conditions
Breast Cancer
Interventions
Capecitabine, Exemestane, Everolimus
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
309 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
19
States / cities
Los Angeles, California • San Diego, California • Fort Myers, Florida + 15 more
Source: ClinicalTrials.gov public record
Updated Feb 25, 2021 · Synced Sep 17, 2026, 1:00 PM EDT