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ClinicalTrials.gov public records Last synced Nov 12, 2026, 9:41 PM EST

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Showing 49–72 of 418 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: ER Positive Clear all
Terminated Not applicable Interventional

Anti-Tumor Immunity Induced by Cryoablation of Invasive Breast Cancers

NCT01856036
View directory record Official record
Conditions
Breast Cancer
Interventions
Cryoablation
Procedure
Lead sponsor
Saint John's Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2014
U.S. locations
1
States / cities
Santa Monica, California
Source: ClinicalTrials.gov public record
Updated Feb 7, 2017 · Synced Nov 12, 2026, 9:41 PM EST
Not listed Not applicable Interventional

A Text-based Intervention in Improving Adherence to Hormone Therapy in Patients With Stage I-III Hormone Receptor Positive Breast Cancer

NCT04086875
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Anatomic Stage IA Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Anatomic Stage IIB Breast Cancer AJCC v8, Anatomic Stage IIIB Breast Cancer AJCC v8, Anatomic Stage IIIC Breast Cancer AJCC v8, Estrogen Receptor Positive Tumor, Progesterone Receptor Positive Tumor, Prognostic Stage I Breast Cancer AJCC v8, Prognostic Stage IA Breast Cancer AJCC v8, Prognostic Stage IB Breast Cancer AJCC v8, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage IIA Breast Cancer AJCC v8, Prognostic Stage IIB Breast Cancer AJCC v8, Prognostic Stage III Breast Cancer AJCC v8, Prognostic Stage IIIA Breast Cancer AJCC v8, Prognostic Stage IIIB Breast Cancer AJCC v8, Prognostic Stage IIIC Breast Cancer AJCC v8
Interventions
Focus Group, Text Message, Best Practice, Questionnaire Administration
Behavioral · Other
Lead sponsor
Thomas Jefferson University
Other
Eligibility
18 Years and older · Female only
Enrollment
332 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
7
States / cities
Sewell, New Jersey • Abington, Pennsylvania • Doylestown, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Jun 10, 2024 · Synced Nov 12, 2026, 9:41 PM EST
Active, not recruiting Phase 3 Interventional Results available

A Phase-3, Open-Label, Randomized Study of Dato-DXd Versus Investigator's Choice of Chemotherapy (ICC) in Participants With Inoperable or Metastatic HR-Positive, HER2-Negative Breast Cancer Who Have Been Treated With One or Two Prior Lines of Systemic Chemotherapy (TROPION-Breast01)

NCT05104866
View directory record Official record
Conditions
Breast Cancer
Interventions
Dato-DXd, Capecitabine, Gemcitabine, Eribulin, Vinorelbine
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
732 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
14
States / cities
Duarte, California • Los Angeles, California • Palo Alto, California + 10 more
Source: ClinicalTrials.gov public record
Updated Aug 24, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Terminated Phase 2 Interventional Results available

Phase II Study of Everolimus Beyond Progression

NCT02269670
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Recurrent Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer
Interventions
everolimus, anastrozole, letrozole, tamoxifen citrate, fulvestrant, megestrol acetate
Drug
Lead sponsor
Emory University
Other
Eligibility
19 Years and older · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
3
States / cities
Atlanta, Georgia
Source: ClinicalTrials.gov public record
Updated Apr 5, 2022 · Synced Nov 12, 2026, 9:41 PM EST
Suspended Phase 3 Interventional

Testing Low Dose Tamoxifen for Invasive Breast Cancer, LoTam Trial

NCT06671912
View directory record Official record
Conditions
Anatomic Stage 0 Breast Cancer AJCC v8, Anatomic Stage 1 Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Estrogen Receptor-Positive Breast Carcinoma, HER2-Negative Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ
Interventions
Anastrozole, Letrozole, Exemestane, Tamoxifen, Mammogram, Magnetic Resonance Imaging, Dual X-ray Absorptiometry, Biospecimen Collection, Questionnaire Administration
Drug · Procedure · Biological + 1 more
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
1,556 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
728
States / cities
Anchorage, Alaska • Gilbert, Arizona • Goodyear, Arizona + 559 more
Source: ClinicalTrials.gov public record
Updated Sep 2, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Terminated Phase 1Phase 2 Interventional

PTX-200, Paclitaxel, Doxorubicin Hydrochloride, and Cyclophosphamide in Treating Patients With Stage IIB-IV Breast Cancer

NCT01697293
View directory record Official record
Conditions
Breast Adenocarcinoma, Estrogen Receptor Positive, HER2/Neu Negative, Recurrent Breast Carcinoma, Stage IIB Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer
Interventions
Cyclophosphamide, Doxorubicin Hydrochloride, Laboratory Biomarker Analysis, Paclitaxel, Therapeutic Conventional Surgery, Triciribine Phosphate
Drug · Other · Procedure
Lead sponsor
Prescient Therapeutics, Ltd.
Industry
Eligibility
18 Years and older
Enrollment
34 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2020
U.S. locations
2
States / cities
Tampa, Florida • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Sep 24, 2020 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 1 Interventional

A Study of GDC-0927 in Postmenopausal Women With Locally Advanced or Metastatic Estrogen Receptor Positive Breast Cancer

NCT02316509
View directory record Official record
Conditions
Breast Cancer
Interventions
GDC-0927
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
43 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
5
States / cities
Boston, Massachusetts • New York, New York • Germantown, Tennessee + 1 more
Source: ClinicalTrials.gov public record
Updated Oct 5, 2020 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 2 Interventional Results available

A Trial of Preoperative MM-121 With Paclitaxel in HER2-negative Breast Cancer

NCT01421472
View directory record Official record
Conditions
ER Positive, Her2 Negative Breast Cancer Patients, Triple Negative Breast Cancer Patients
Interventions
MM-121, Paclitaxel
Drug
Lead sponsor
Merrimack Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
196 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
38
States / cities
Birmingham, Alabama • Tucson, Arizona • Tuscon, Arizona + 32 more
Source: ClinicalTrials.gov public record
Updated May 3, 2016 · Synced Nov 12, 2026, 9:41 PM EST
Withdrawn Phase 1Phase 2 Interventional

A Rollover Protocol of Elacestrant, in Combination With Onapristone, for Patients With ER+, PR+, HER2- Advanced or Metastatic Breast Cancer

NCT06938711
View directory record Official record
Conditions
Breast Cancer
Interventions
Elacestrant, Onapristone
Drug
Lead sponsor
Context Therapeutics Inc.
Industry
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 22, 2025 · Synced Nov 12, 2026, 9:41 PM EST
Recruiting Phase 2 Interventional

The SAPPHO Study: Sequential Therapy With Curative Intent in de Novo HER2+ Metastatic Breast Cancer

NCT06439693
View directory record Official record
Conditions
Breast Cancer Female, Breast Cancer, Breast Cancer Metastatic, Estrogen Receptor-positive Breast Cancer, HER2-positive Breast Cancer, Stage IV Breast Cancer
Interventions
Nab-Paclitaxel, Paclitaxel, Docetaxel, Phesgo, T-DM1, Pertuzumab, Trastuzumab Deruxtecan, Trastuzumab Subcutaneous Subcutaneous, Tucatinib, Trastuzumab
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
72 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2033
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 6, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Terminated Phase 2 Interventional

Letrozole and Goserelin or Leuprolide in Treating Premenopausal Estrogen Receptor-Positive Patients With Stage IV Breast Cancer

NCT00498901
View directory record Official record
Conditions
Breast Cancer
Interventions
goserelin, letrozole, leuprolide acetate, conventional surgery
Drug · Procedure
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2008
U.S. locations
2
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated May 9, 2013 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 2 Interventional Results available

Alternative Dosing of Exemestane Before Surgery in Treating Postmenopausal Patients With Stage 0-II Estrogen Positive Breast Cancer

NCT02598557
View directory record Official record
Conditions
Stage 0 Breast Cancer AJCC v6 and v7, Stage I Breast Cancer AJCC v7, Stage IA Breast Cancer AJCC v7, Stage IB Breast Cancer AJCC v7, Stage II Breast Cancer AJCC v6 and v7, Stage IIA Breast Cancer AJCC v6 and v7, Stage IIB Breast Cancer AJCC v6 and v7
Interventions
Exemestane, Laboratory Biomarker Analysis, Pharmacological Study, Placebo Administration, Quality-of-Life Assessment, Questionnaire Administration, Therapeutic Conventional Surgery
Drug · Other · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
Up to 75 Years · Female only
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2023
U.S. locations
3
States / cities
Tampa, Florida • New York, New York • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Aug 22, 2023 · Synced Nov 12, 2026, 9:41 PM EST
Completed Not applicable Interventional Results available

Pre-Surgical Intervention for Targeted Therapies for Breast Cancer

NCT01004744
View directory record Official record
Conditions
Invasive Breast Cancer
Interventions
Anastrozole
Drug
Lead sponsor
Columbia University
Other
Eligibility
21 Years and older · Female only
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2009
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jan 11, 2021 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 1Phase 2 Interventional Results available

A Study of ZN-c5 in Subjects With Breast Cancer

NCT03560531
View directory record Official record
Conditions
Breast Cancer
Interventions
ZN-c5, Palbociclib
Drug
Lead sponsor
Zeno Alpha Inc.
Industry
Eligibility
18 Years and older
Enrollment
181 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
11
States / cities
Tucson, Arizona • Los Angeles, California • Bethesda, Maryland + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 9, 2024 · Synced Nov 12, 2026, 9:41 PM EST
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
216
States / cities
Birmingham, Alabama • Chandler, Arizona • Gilbert, Arizona + 132 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 2 Interventional Results available

Exemestane and Cyclophosphamide for Metastatic Breast Cancer

NCT01963481
View directory record Official record
Conditions
Metastatic Beast Cancer
Interventions
Exemestane, Cyclophosphamide
Drug
Lead sponsor
NYU Langone Health
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2017
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Mar 17, 2020 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 2 Interventional Results available

Testing the Effects of Palbociclib and Fulvestrant or Letrozole for Patients 70 Years of Age of Older With Metastatic Breast Cancer

NCT03633331
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2/Neu Negative, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Palbociclib, Letrozole, Fulvestrant, Questionnaire Administration, Quality-of-Life Assessment
Drug · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
70 Years and older
Enrollment
93 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2026
U.S. locations
447
States / cities
Anchorage, Alaska • Kingman, Arizona • Arroyo Grande, California + 303 more
Source: ClinicalTrials.gov public record
Updated Oct 7, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Terminated Phase 3 Interventional Results available

STRIDE - STimulating Immune Response In aDvanced brEast Cancer

NCT00925548
View directory record Official record
Conditions
Breast Cancer
Interventions
Tecemotide (L-BLP25) and Hormonal Treatment, Placebo of tecemotide (L-BLP25) and Hormonal Treatment, cyclophosphamide, sodium chloride (NaCl)
Biological · Drug
Lead sponsor
EMD Serono
Industry
Eligibility
18 Years and older · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
Hickory, North Carolina
Source: ClinicalTrials.gov public record
Updated Jul 24, 2014 · Synced Nov 12, 2026, 9:41 PM EST
Recruiting Phase 2 Interventional

Finding the Best Tamoxifen Dose for Breast Cancer Risk Reduction in Premenopausal Women, RENAISSANCE Trial

NCT06184750
View directory record Official record
Conditions
Breast Atypical Ductal Hyperplasia, Breast Atypical Lobular Hyperplasia, Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ, Estrogen Receptor-Positive Breast Carcinoma
Interventions
Biopsy Procedure, Biospecimen Collection, Mammography, Questionnaire Administration, Tamoxifen
Procedure · Other · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years to 55 Years · Female only
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
11
States / cities
Tucson, Arizona • Chicago, Illinois • Kansas City, Kansas + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 27, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Recruiting Phase 2 Interventional

NeoTAILOR: ABiomarker-directed Approach to Guide Neoadjuvant Therapy for Patients With Stage II/III ER-positive, HER2-negative Breast Cancer

NCT05837455
View directory record Official record
Conditions
Breast Cancer, Cancer of the Breast
Interventions
VENTANA MIB-1 Ki67 assay, Oncotype DX® Recurrence Score, PAM50-based Prosigna breast cancer gene signature assay, Anastrozole, Combination anthracycline and/or taxane based treatment
Device · Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 13, 2026 · Synced Nov 12, 2026, 9:41 PM EST
Withdrawn Phase 1 Interventional

Dose Optimization of Rosuvastatin in Early Stage and Metastatic Estrogen Receptor Positive Breast Cancer Patients on Endocrine Therapy

NCT02483871
View directory record Official record
Conditions
Breast Cancer
Interventions
Rosuvastatin
Drug
Lead sponsor
Duke University
Other
Eligibility
Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
1
States / cities
Durham, North Carolina
Source: ClinicalTrials.gov public record
Updated Jun 5, 2017 · Synced Nov 12, 2026, 9:41 PM EST
Completed Phase 3 Interventional Results available

S1202: Duloxetine Hydrochloride for Muscle/Joint Pain in Early-Stage Breast Cancer Receiving Hormone Therapy

NCT01598298
View directory record Official record
Conditions
Breast Cancer, Musculoskeletal Complications, Pain
Interventions
duloxetine hydrochloride, placebo
Drug · Other
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
Up to 120 Years · Female only
Enrollment
299 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
714
States / cities
Anchorage, Alaska • Fairbanks, Alaska • Jonesboro, Arkansas + 475 more
Source: ClinicalTrials.gov public record
Updated Dec 16, 2022 · Synced Nov 12, 2026, 9:41 PM EST
Terminated Phase 2 Interventional Results available

A Phase II Study Comparing The Efficacy Of Venetoclax + Fulvestrant Vs. Fulvestrant In Women With Estrogen Receptor-Positive, Her2-Negative Locally Advanced Or Metastatic Breast Cancer Who Experienced Disease Recurrence Or Progression During Or After CDK4/6 Inhibitor Therapy

NCT03584009
View directory record Official record
Conditions
Estrogen Receptor-positive (ER+)/Human Epidermal Growth Factor Receptor (HER2)-Negative Locally Advanced or Metastatic Breast Cancer
Interventions
Venetoclax, Fulvestrant
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older · Female only
Enrollment
103 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
21
States / cities
Phoenix, Arizona • Springdale, Arkansas • La Jolla, California + 18 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2022 · Synced Nov 12, 2026, 9:41 PM EST
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
235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
12
States / cities
Los Angeles, California • Santa Monica, California • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Nov 12, 2026, 9:41 PM EST