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ClinicalTrials.gov public records Last synced Sep 30, 2026, 1:59 PM EDT

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Showing 1–24 of 392 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Estrogen Receptor-Positive Breast Carcinoma Clear all
Active, not recruiting Phase 3 Interventional Results available

S1207 Hormone Therapy With or Without Everolimus in Treating Patients With Breast Cancer

NCT01674140
View directory record Official record
Conditions
Breast Cancer
Interventions
anastrozole, everolimus, exemestane, goserelin acetate, letrozole, leuprolide acetate, tamoxifen citrate, placebo
Drug · Other
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
1,939 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2030
U.S. locations
1455
States / cities
Birmingham, Alabama • Anchorage, Alaska • Fairbanks, Alaska + 887 more
Source: ClinicalTrials.gov public record
Updated Feb 10, 2026 · Synced Sep 30, 2026, 1:59 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 Sep 30, 2026, 1:59 PM EDT
Terminated Phase 2 Interventional Results available

Denosumab in Treating Patients With ER and/or PR Positive, HER2 Negative Metastatic Breast Cancer With Bone Metastases and Detectable Circulating Tumor Cells

NCT03070002
View directory record Official record
Conditions
Breast Carcinoma Metastatic in the Bone, Circulating Tumor Cell Count, Estrogen Receptor Positive, HER2/Neu Negative, Progesterone Receptor Positive, Stage IV Breast Cancer
Interventions
Denosumab, Laboratory Biomarker Analysis
Biological · Other
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2018
U.S. locations
2
States / cities
Chicago, Illinois • Lake Forest, Illinois
Source: ClinicalTrials.gov public record
Updated Nov 20, 2018 · Synced Sep 30, 2026, 1:59 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 28, 2024 · Synced Sep 30, 2026, 1:59 PM EDT
Recruiting No phase listed Observational

Active Surveillance in Older Women With ER+ Breast Cancer

NCT07262138
View directory record Official record
Conditions
Early Stage Estrogen Receptor (ER) Positive Breast Cancer
Interventions
Active Surveillance
Other
Lead sponsor
University of Pittsburgh
Other
Eligibility
70 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Sep 30, 2026, 1:59 PM EDT
Terminated Phase 1Phase 2 Interventional

Palbociclib in Estrogen Receptor Positive (ER+) Human Epidermal Growth Factor Receptor 2 Positive (HER2+) Metastatic Breast Cancer

NCT03709082
View directory record Official record
Conditions
HER2-positive Breast Cancer, Breast Cancer Metastatic
Interventions
Palbociclib 75mg, Letrozole 2.5mg, T-DM1, Palbociclib 100mg, Palbociclib 125mg, Palbociclib
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2021
U.S. locations
5
States / cities
Kansas City, Kansas • Overland Park, Kansas • Kansas City, Missouri + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 5, 2024 · Synced Sep 30, 2026, 1:59 PM EDT
Terminated Phase 2 Interventional

High-Dose Esterified Estrogens in Treating Postmenopausal Women With Metastatic Breast Cancer That Has Failed Previous Hormone Therapy

NCT00131924
View directory record Official record
Conditions
Breast Cancer
Interventions
esterified estrogens
Biological
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2006
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Jun 11, 2012 · Synced Sep 30, 2026, 1:59 PM EDT
Active, not recruiting Not applicable Interventional

Hypofractionated Regional Nodal Irradiation Clinical Trial for Women With Breast Cancer

NCT02515110
View directory record Official record
Conditions
Breast Cancer, Node-positive Breast Cancer, Breast Adenocarcinoma, Invasive Breast Carcinoma, Lobular Breast Carcinoma In Situ
Interventions
External Beam Radiation Therapy
Radiation
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
40 Years and older · Female only
Enrollment
137 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2028
U.S. locations
2
States / cities
Richmond, Virginia • South Hill, Virginia
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Sep 30, 2026, 1:59 PM EDT
Completed Phase 3 Interventional Results available

Study of Efficacy and Safety of LEE011 in Postmenopausal Women With Advanced Breast Cancer

NCT01958021
View directory record Official record
Conditions
Advanced, Metastatic Breast Cancer
Interventions
Ribociclib, Letrozole, Placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years · Female only
Enrollment
668 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2023
U.S. locations
73
States / cities
Chandler, Arizona • Sedona, Arizona • Fayetteville, Arkansas + 62 more
Source: ClinicalTrials.gov public record
Updated Mar 7, 2025 · Synced Sep 30, 2026, 1:59 PM EDT
Completed Phase 2 Interventional Results available

Phase II Trial of the Cyclin-Dependent Kinase Inhibitor PD 0332991 in Patients With Cancer

NCT01037790
View directory record Official record
Conditions
Adult Solid Tumor, Adenocarcinoma of the Colon, Adenocarcinoma of the Rectum, Adult Central Nervous System Germ Cell Tumor, Adult Teratoma, Benign Teratoma, Estrogen Receptor-negative Breast Cancer, Estrogen Receptor-positive Breast Cancer, Familial Testicular Germ Cell Tumor, HER2-negative Breast Cancer, HER2-positive Breast Cancer, Male Breast Cancer, Ovarian Immature Teratoma, Ovarian Mature Teratoma, Ovarian Monodermal and Highly Specialized Teratoma, Progesterone Receptor-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Recurrent Breast Cancer, Recurrent Colon Cancer, Recurrent Extragonadal Germ Cell Tumor, Recurrent Extragonadal Non-seminomatous Germ Cell Tumor, Recurrent Extragonadal Seminoma, Recurrent Malignant Testicular Germ Cell Tumor, Recurrent Melanoma, Recurrent Ovarian Germ Cell Tumor, Recurrent Rectal Cancer, Stage III Extragonadal Non-seminomatous Germ Cell Tumor, Stage III Extragonadal Seminoma, Stage III Malignant Testicular Germ Cell Tumor, Stage III Ovarian Germ Cell Tumor, Stage IV Breast Cancer, Stage IV Colon Cancer, Stage IV Extragonadal Non-seminomatous Germ Cell Tumor, Stage IV Extragonadal Seminoma, Stage IV Melanoma, Stage IV Ovarian Germ Cell Tumor, Stage IV Rectal Cancer, Testicular Immature Teratoma, Testicular Mature Teratoma
Interventions
PD-0332991
Drug
Lead sponsor
Abramson Cancer Center at Penn Medicine
Other
Eligibility
18 Years and older
Enrollment
304 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2019
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Mar 11, 2021 · Synced Sep 30, 2026, 1:59 PM EDT
Terminated Phase 1 Interventional

A Study to Evaluate the Safety, Pharmacokinetics, and Activity of GDC-0587 as a Monotherapy and in Combination With Giredestrant in Participants With Locally Advanced or Metastatic Estrogen Receptor-Positive and Human Epidermal Growth Factor Receptor 2-Negative (ER+/HER2-) Breast Cancer

NCT07214662
View directory record Official record
Conditions
Breast Cancer
Interventions
GDC-0587, Giredestrant, Omeprazole
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
2
States / cities
Grand Rapids, Michigan • San Antonio, Texas
Source: ClinicalTrials.gov public record
Updated Aug 21, 2026 · Synced Sep 30, 2026, 1:59 PM EDT
Terminated Phase 1Phase 2 Interventional Results available

Study of Elacestrant in Combination With Onapristone in Patients With Advanced or Metastatic Breast Cancer

NCT05618613
View directory record Official record
Conditions
Breast Cancer
Interventions
Elacestrant, Onapristone
Drug
Lead sponsor
Context Therapeutics Inc.
Industry
Eligibility
18 Years and older
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
3
States / cities
Phoenix, Arizona • Zion, Illinois • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 21, 2026 · Synced Sep 30, 2026, 1:59 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 16, 2014 · Synced Sep 30, 2026, 1:59 PM EDT
Completed Not applicable Interventional Results available

Hormone Therapy Or Chemotherapy Before Surgery Based on Gene Expression Analysis in Treating Patients With Breast Cancer

NCT01293032
View directory record Official record
Conditions
Ductal Breast Carcinoma in Situ, Lobular Breast Carcinoma in Situ, Stage II Breast Cancer, Stage IIA Breast Cancer, Stage IIB Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer
Interventions
Neoadjuvant Therapy, Therapeutic Conventional Surgery, Laboratory Biomarker Analysis, Gene Expression Analysis, Systemic Chemotherapy, Tamoxifen Citrate, Aromatase Inhibition Therapy
Procedure · Other · Genetic + 1 more
Lead sponsor
Virginia Commonwealth University
Other
Eligibility
18 Years and older · Female only
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2016
U.S. locations
7
States / cities
Washington D.C., District of Columbia • Charlotte, North Carolina • Greensboro, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated Jul 12, 2016 · Synced Sep 30, 2026, 1:59 PM EDT
Completed Phase 2 Interventional Results available

Zoledronic Acid in Aromatase Inhibitor Induced Musculoskeletal Symptoms

NCT01194440
View directory record Official record
Conditions
Ductal Carcinoma in Situ, Estrogen Receptor-positive Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
letrozole, zoledronic acid
Drug
Lead sponsor
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins
Other
Eligibility
18 Years and older · Female only
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2014
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Sep 12, 2018 · Synced Sep 30, 2026, 1:59 PM EDT
Recruiting Phase 2 Interventional

Turkey Tail Mushroom for Treating Post-Menopausal Women With HER2-Negative ER-Positive Breast Cancer Undergoing Surgery

NCT06450873
View directory record Official record
Conditions
Estrogen Receptor-Positive Breast Carcinoma, HER2-Negative Breast Carcinoma
Interventions
Coriolus Versicolor Extract, Questionnaire Administration
Drug · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Scottsdale, Arizona
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Sep 30, 2026, 1:59 PM EDT
Completed Phase 1 Interventional

G1T48, an Oral SERD, Alone and in Combination With Palbociclib in ER-Positive, HER2-Negative Advanced Breast Cancer

NCT03455270
View directory record Official record
Conditions
Carcinoma, Ductal, Breast, Breast Cancer Female, Breast Neoplasm, Breast Cancer, Metastatic Breast Cancer, Advanced Breast Cancer, Stage IV Breast Cancer
Interventions
G1T48, Palbociclib
Drug
Lead sponsor
G1 Therapeutics, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
107 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
6
States / cities
Beverly Hills, California • Stanford, California • Chicago, Illinois + 3 more
Source: ClinicalTrials.gov public record
Updated Sep 21, 2026 · Synced Sep 30, 2026, 1:59 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 13, 2025 · Synced Sep 30, 2026, 1:59 PM EDT
Terminated Phase 1 Interventional

RO4929097 And Exemestane in Treating Pre- and Postmenopausal Patients With Advanced or Metastatic Breast Cancer

NCT01149356
View directory record Official record
Conditions
Estrogen Receptor Positive, HER2/Neu Negative, Male Breast Carcinoma, Recurrent Breast Carcinoma, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer
Interventions
Exemestane, Gamma-Secretase Inhibitor RO4929097, Goserelin Acetate
Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2013
U.S. locations
4
States / cities
Tampa, Florida • Atlanta, Georgia • Chapel Hill, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated May 25, 2015 · Synced Sep 30, 2026, 1:59 PM EDT
Terminated Phase 2 Interventional Results available

MK2206 in Treating Patients With Stage I, Stage II, or Stage III Breast Cancer

NCT01319539
View directory record Official record
Conditions
Estrogen Receptor Negative, Estrogen Receptor Positive, HER2/Neu Negative, HER2/Neu Positive, Progesterone Receptor Negative, Progesterone Receptor Positive, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage IIA Breast Cancer, Stage IIB Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Triple-Negative Breast Carcinoma
Interventions
Akt Inhibitor MK2206, Therapeutic Conventional Surgery, Pharmacological Study, Laboratory Biomarker Analysis
Drug · Procedure · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
3
States / cities
New York, New York • The Bronx, New York
Source: ClinicalTrials.gov public record
Updated Aug 30, 2017 · Synced Sep 30, 2026, 1:59 PM EDT
Completed Not applicable Interventional Results available

Analyzing a New Mechanism in Response to Tamoxifen Therapy in Breast Cancer Patients

NCT01027416
View directory record Official record
Conditions
Breast Cancer
Interventions
Tamoxifen
Drug
Lead sponsor
Roswell Park Cancer Institute
Other
Eligibility
18 Years and older · Female only
Enrollment
59 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2009 – 2015
U.S. locations
2
States / cities
Chicago, Illinois • Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Apr 21, 2026 · Synced Sep 30, 2026, 1:59 PM EDT
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 Sep 30, 2026, 1:59 PM EDT
Recruiting Not applicable Interventional

S1703 Serum Tumor Marker Directed Disease Monitoring in Patients With Hormone Receptor Positive Her2 Negative Metastatic Breast Cancer

NCT03723928
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Estrogen Receptor Positive, HER2/Neu Negative, Progesterone Receptor Positive, Prognostic Stage IV Breast Cancer AJCC v8, Elevated CA15-3 or CEA or CA27-29
Interventions
Usual care disease monitoring, Serum Tumor Marker directed disease monitoring, Quality-of-Life Assessment, Anxiety Questionnaire Administration
Other
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
739 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2036
U.S. locations
709
States / cities
Anchorage, Alaska • Fairbanks, Alaska • Kingman, Arizona + 456 more
Source: ClinicalTrials.gov public record
Updated Apr 2, 2026 · Synced Sep 30, 2026, 1:59 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 Sep 30, 2026, 1:59 PM EDT