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ClinicalTrials.gov public records Last synced Oct 11, 2026, 12:14 PM EDT

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Showing 121–144 of 393 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Breast Cancer, Estrogen Receptor-Positive Clear all
Recruiting Not applicable Interventional

Breast Re-irradiation After Second Ipsilateral Lumpectomy

NCT06867484
View directory record Official record
Conditions
Breast Cancer, Cancer, Cancer of the Breast, HER2-negative Breast Cancer, ER+ Breast Cancer, Estrogen-receptor-positive Breast Cancer
Interventions
Intensity modulated radiation therapy (IMRT)
Radiation
Lead sponsor
Youssef Zeidan
Other
Eligibility
40 Years and older · Female only
Enrollment
114 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2033
U.S. locations
2
States / cities
Boca Raton, Florida • Miami, Florida
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Early Phase 1 Interventional

A 2-Week Ketogenic Diet in Combination With Letrozole to Modulate PI3K Signaling in ER+ Breast Cancer

NCT03962647
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer
Interventions
2-Week Ketogenic Diet, Letrozole
Dietary Supplement · Drug
Lead sponsor
Vanderbilt-Ingram Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Apr 30, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 1 Interventional

A Study of Multiple Immune and Disease Treatment Combinations in Participants With ER+HER2- Breast Cancer That Has Spread

NCT04132817
View directory record Official record
Conditions
Breast Cancer
Interventions
Nivolumab, Ipilimumab, Nab-paclitaxel
Biological · Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2022
U.S. locations
8
States / cities
Los Angeles, California • Sacramento, California • Aurora, Colorado + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 2, 2022 · Synced Oct 11, 2026, 12:14 PM EDT
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 Oct 11, 2026, 12:14 PM EDT
Withdrawn Early Phase 1 Interventional

ERB-B4 After Treatment With HDAC Inhibitor in ER+ Tamoxifen Refractory Breast Cancer

NCT00993642
View directory record Official record
Conditions
Breast Cancer
Interventions
Panobinostat (LBH589)
Drug
Lead sponsor
Tulane University Health Sciences Center
Other
Eligibility
18 Years and older · Female only
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2010
U.S. locations
1
States / cities
New Orleans, Louisiana
Source: ClinicalTrials.gov public record
Updated Mar 13, 2017 · Synced Oct 11, 2026, 12:14 PM EDT
Completed No phase listed Observational

Quality of Life, Employment, and Informal Care Costs in Women Who Are Receiving Chemotherapy for Breast Cancer

NCT00115505
View directory record Official record
Conditions
Breast Carcinoma
Interventions
quality-of-life assessment, Questionnaire Administration
Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older · Female only
Enrollment
307 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2016
U.S. locations
227
States / cities
Mobile, Alabama • Fort Smith, Arkansas • Fresno, California + 154 more
Source: ClinicalTrials.gov public record
Updated Aug 18, 2017 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 2 Interventional Results available

Safety and Efficacy Study of Sapanisertib in Combination With Exemestane or Fulvestrant in Postmenopausal Women With Estrogen Receptor Positive/Human Epidermal Growth Factor Receptor 2 Negative (ER+/HER2-) Metastatic Breast Cancer

NCT02049957
View directory record Official record
Conditions
Breast Cancer
Interventions
Sapanisertib, Fulvestrant, Exemestane
Drug
Lead sponsor
Calithera Biosciences, Inc
Industry
Eligibility
18 Years and older · Female only
Enrollment
118 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2018
U.S. locations
30
States / cities
Los Angeles, California • San Francisco, California • Santa Barbara, California + 24 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Oct 11, 2026, 12:14 PM EDT
Recruiting Phase 3 Interventional

A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence

NCT06492616
View directory record Official record
Conditions
Breast Cancer
Interventions
Elacestrant, Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Stemline Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
4,220 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2032
U.S. locations
176
States / cities
Daphne, Alabama • Chandler, Arizona • Gilbert, Arizona + 139 more
Source: ClinicalTrials.gov public record
Updated Sep 15, 2026 · Synced Oct 11, 2026, 12:14 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 10, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Terminated Phase 2 Interventional

Study of AFP464 +/- Faslodex in ER + Breast Cancer

NCT01233947
View directory record Official record
Conditions
Breast Neoplasm
Interventions
AFP464, AFP464 + Faslodex
Drug
Lead sponsor
Tigris Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Dallas, Texas
Source: ClinicalTrials.gov public record
Updated Jan 9, 2012 · Synced Oct 11, 2026, 12:14 PM EDT
Terminated Phase 2 Interventional Results available

Neoadj ph 2 AI Plus Everolimus in Postmenopausal Women w/ ER Pos/HER2 Neg, Low Risk Score

NCT02236572
View directory record Official record
Conditions
Breast Cancer
Interventions
Everolimus
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older · Female only
Enrollment
17 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2021
U.S. locations
1
States / cities
New Haven, Connecticut
Source: ClinicalTrials.gov public record
Updated Feb 1, 2022 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 2 Interventional Results available

Cabozantinib +/- Trastuzumab In Breast Cancer Patients w/ Brain Metastases

NCT02260531
View directory record Official record
Conditions
Breast Cancer, Brain Tumor - Metastatic
Interventions
Cabozantinib, Trastuzumab
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2020
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 20, 2021 · Synced Oct 11, 2026, 12:14 PM EDT
Terminated Phase 3 Interventional Results available

S1222 Trial (Everolimus, Anastrozole and Fulvestrant) in Post-Menopausal Stage IV Breast Cancer

NCT02137837
View directory record Official record
Conditions
Breast Cancer
Interventions
Fulvestrant, Anastrozole, Everolimus, Placebo - Anastrozole, Placebo - Everolimus
Drug
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2019
U.S. locations
223
States / cities
Anchorage, Alaska • Scottsdale, Arizona • Tucson, Arizona + 150 more
Source: ClinicalTrials.gov public record
Updated Jan 28, 2021 · Synced Oct 11, 2026, 12:14 PM EDT
Active, not recruiting Phase 3 Interventional Results available

Comparison of Fulvestrant (FASLODEX™) 250 mg and 500 mg in Postmenopausal Women With Oestrogen Receptor Positive Advanced Breast Cancer Progressing or Relapsing After Previous Endocrine Therapy.

NCT00099437
View directory record Official record
Conditions
Breast Cancer
Interventions
Fulvestrant
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
45 Years to 130 Years · Female only
Enrollment
736 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2026
U.S. locations
14
States / cities
Casa Grande, Arizona • Fountain Valley, California • New Britain, Connecticut + 11 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Terminated Phase 4 Interventional

Effect of HSD3B1 (1245C) Gene Mutation on Treatment of Stage I-III Breast Cancer

NCT05183828
View directory record Official record
Conditions
Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, Breast Adenocarcinoma, Invasive Breast Carcinoma of No Special Type
Interventions
Biospecimen Collection, Letrozole, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
62 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jun 4, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Terminated Not applicable Interventional Results available

Biomarkers in Tissue Samples From Patients With Newly Diagnosed Breast Cancer Treated With Zoledronic Acid

NCT01409811
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, Invasive Ductal Breast Carcinoma, Progesterone Receptor-positive Breast Cancer, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage IIA Breast Cancer, Stage IIB Breast Cancer
Interventions
zoledronic acid, laboratory biomarker analysis, therapeutic conventional surgery
Drug · Other · Procedure
Lead sponsor
City of Hope Medical Center
Other
Eligibility
Female only
Enrollment
9 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
1
States / cities
Duarte, California
Source: ClinicalTrials.gov public record
Updated May 8, 2020 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 2 Interventional Results available

MEDI4736 and Tremelimumab in Treating Patients With Metastatic HER2 Negative Breast Cancer

NCT02536794
View directory record Official record
Conditions
Estrogen Receptor Negative, Estrogen Receptor Positive, HER2/Neu Negative, Recurrent Breast Carcinoma, Stage IV Breast Cancer
Interventions
Anti-B7H1 Monoclonal Antibody MEDI4736, Laboratory Biomarker Analysis, Pharmacological Study, Tremelimumab
Biological · Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2021
U.S. locations
2
States / cities
Chicago, Illinois • Lake Forest, Illinois
Source: ClinicalTrials.gov public record
Updated May 17, 2022 · Synced Oct 11, 2026, 12:14 PM EDT
Terminated No phase listed Observational

Gut and Tumor Microbiome in Patients With Early Stage (II-III), Locally Advanced or Advanced ER-positive and HER2-negative Breast Cancer.

NCT06126003
View directory record Official record
Conditions
Breast Cancer
Interventions
Observation
Other
Lead sponsor
BioCorteX Inc
Industry
Eligibility
18 Years to 85 Years · Female only
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2024
U.S. locations
6
States / cities
Decatur, Illinois • Las Vegas, Nevada • Belleville, New Jersey + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 2, 2024 · Synced Oct 11, 2026, 12:14 PM EDT
Recruiting Phase 2 Interventional

Adaptive Therapy With Capecitabine for Treatment of Metastatic ER Positive, HER2 Negative Breast Cancer

NCT06525766
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Estrogen-receptor-positive Breast Cancer, Metastatic HER2-Negative Breast Carcinoma, Metastatic Breast Cancer
Interventions
Biospecimen Collection, Bone Scan, Capecitabine, Computed Tomography, Magnetic Resonance Imaging, Questionnaire Administration
Procedure · Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older
Enrollment
35 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Aug 12, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 3 Interventional Results available

Paclitaxel, Nab-paclitaxel, or Ixabepilone With or Without Bevacizumab in Treating Patients With Stage IIIC or Stage IV Breast Cancer

NCT00785291
View directory record Official record
Conditions
Estrogen Receptor Negative, Estrogen Receptor Positive, HER2/Neu Negative, HER2/Neu Positive, Progesterone Receptor Negative, Progesterone Receptor Positive, Recurrent Breast Carcinoma, Stage IIIC Breast Cancer AJCC v6, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Bevacizumab, Ixabepilone, Laboratory Biomarker Analysis, Nab-paclitaxel, Paclitaxel, Questionnaire Administration
Biological · Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
799 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2017
U.S. locations
703
States / cities
Scottsdale, Arizona • Fort Smith, Arkansas • Jonesboro, Arkansas + 472 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Active, not recruiting Phase 3 Interventional

Study of Pembrolizumab (MK-3475) Versus Placebo in Combination With Neoadjuvant Chemotherapy & Adjuvant Endocrine Therapy in the Treatment of Early-Stage Estrogen Receptor-Positive, Human Epidermal Growth Factor Receptor 2-Negative (ER+/HER2-) Breast Cancer (MK-3475-756/KEYNOTE-756)

NCT03725059
View directory record Official record
Conditions
Breast Cancer
Interventions
Pembrolizumab (K), Placebo (P), Paclitaxel (X), Doxorubicin (A), Epirubicin (E), Cyclophosphamide (C), Endocrine therapy, Radiation therapy, Surgery
Biological · Drug · Radiation + 1 more
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
1,240 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2031
U.S. locations
45
States / cities
Daphne, Alabama • Goodyear, Arizona • Tucson, Arizona + 39 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2025 · Synced Oct 11, 2026, 12:14 PM EDT
Not yet recruiting Phase 2 Interventional

Randomized Double-Blind Phase II Trial of Baby Exemestane Versus Baby Tamoxifen in Post-Menopausal Women at High Risk for Breast Cancer

NCT07499999
View directory record Official record
Conditions
Breast Cancer, Ductal Carcinoma, Estrogen-receptor-positive Breast Cancer, Atypical Lobular Hyperplasia, BRCA2 Mutation, CHEK2 Gene Mutation, Ataxia Telangiectasia Mutated Gene Mutation
Interventions
Exemestane, Tamoxifen
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
Female only
Enrollment
140 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Mar 30, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 1 Interventional

ALRN-6924 and Paclitaxel in Treating Patients With Advanced, Metastatic, or Unresectable Solid Tumors

NCT03725436
View directory record Official record
Conditions
Advanced Malignant Solid Neoplasm, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Anatomic Stage IIIB Breast Cancer AJCC v8, Anatomic Stage IIIC Breast Cancer AJCC v8, Estrogen Receptor Positive, HER2/Neu Negative, Metastatic Malignant Solid Neoplasm, 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, Recurrent Breast Carcinoma, TP53 wt Allele, Unresectable Malignant Solid Neoplasm
Interventions
MDM2/MDMX Inhibitor ALRN-6924, Paclitaxel
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Mar 16, 2026 · Synced Oct 11, 2026, 12:14 PM EDT
Completed Phase 2 Interventional Results available

Study of Dasatinib (BMS-354825) in Patients With Advanced Estrogen/Progesterone Receptor-positive (ER+/PR+) or Her2/Neu-positive (Her2/Neu+)Breast Cancer

NCT00371345
View directory record Official record
Conditions
Breast Cancer, Metastasis
Interventions
Dasatinib, Dasatinib 100 mg
Drug
Lead sponsor
Bristol-Myers Squibb
Industry
Eligibility
18 Years and older · Female only
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2006 – 2009
U.S. locations
7
States / cities
San Francisco, California • Jacksonville, Florida • Boston, Massachusetts + 4 more
Source: ClinicalTrials.gov public record
Updated Apr 26, 2011 · Synced Oct 11, 2026, 12:14 PM EDT