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ClinicalTrials.gov public records Last synced Oct 4, 2026, 9:03 PM EDT

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Showing 97–120 of 392 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: Estrogen Receptor Positive Breast Cancer Clear all
Completed Phase 2 Interventional Results available

Preoperative Hormone Therapy for Postmenopausal Women With ER+ Clinical Stage T2-4 Tumors

NCT01831076
View directory record Official record
Conditions
Breast Cancer, Stage II Breast Cancer, Stage III Breast Cancer
Interventions
Exemestane, Exemestane and tamoxifen
Drug
Lead sponsor
University of Colorado, Denver
Other
Eligibility
50 Years and older · Female only
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2022
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Mar 3, 2022 · Synced Oct 4, 2026, 9:03 PM EDT
Completed Phase 2 Interventional

Neoadjuvant Letrozole in Treating Postmenopausal Women With Estrogen-Receptor Positive and/or Progesterone-Receptor Positive Stage II, Stage IIIA, or Stage IIIB Breast Cancer

NCT00084396
View directory record Official record
Conditions
Breast Cancer
Interventions
letrozole, conventional surgery
Drug · Procedure
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
115 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2016
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Sep 26, 2016 · Synced Oct 4, 2026, 9:03 PM EDT
Completed Phase 3 Interventional

Phase III Study of Atamestane Plus Toremifene Versus Letrozole in Advanced Breast Cancer

NCT00044291
View directory record Official record
Conditions
Breast Neoplasms, Neoplasms, Hormone-dependent
Interventions
atamestane, toremifene, letrozole, aromatase inhibition, hormone therapy, endocrine therapy, antiestrogen therapy
Drug · Procedure
Lead sponsor
Intarcia Therapeutics
Industry
Eligibility
18 Years and older · Female only
Enrollment
865 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2002 – 2006
U.S. locations
17
States / cities
Lake Havasu City, Arizona • Tucson, Arizona • Greenbrae, California + 14 more
Source: ClinicalTrials.gov public record
Updated Jul 31, 2015 · Synced Oct 4, 2026, 9:03 PM EDT
Recruiting Phase 2 Interventional

Preventing Dato-DXd Associated Stomatitis With Dexamethasone Mouthwash, TROPION-DM

NCT06974604
View directory record Official record
Conditions
Breast Neoplasms, Lung Neoplasms
Interventions
Dexamethasone oral
Drug
Lead sponsor
Brown University
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Oct 24, 2025 · Synced Oct 4, 2026, 9:03 PM EDT
Active, not recruiting Phase 1 Interventional

Study of AC699 in Patients With Estrogen Receptor Positive/Human Epidermal Growth Factor Receptor 2 Negative (ER+/HER2-) Locally Advanced or Metastatic Breast Cancer

NCT05654532
View directory record Official record
Conditions
Breast Cancer
Interventions
AC699
Drug
Lead sponsor
Accutar Biotechnology Inc
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
9
States / cities
Denver, Colorado • Orlando, Florida • Sarasota, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Oct 4, 2026, 9:03 PM EDT
Completed Phase 1 Interventional Results available

Study to Evaluate Safety, Tolerability, Pharmacokinetics, and Pharmacodynamics of Alobresib (Formerly GS-5829) in Adults With Advanced Solid Tumors and Lymphomas and in Combination With Exemestane or Fulvestrant in Adults With Estrogen Receptor Positive Breast Cancer

NCT02392611
View directory record Official record
Conditions
Solid Tumors and Lymphomas
Interventions
Alobresib, Exemestane, Fulvestrant
Drug
Lead sponsor
Gilead Sciences
Industry
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
4
States / cities
Scottsdale, Arizona • Fort Wayne, Indiana • Goshen, Indiana + 1 more
Source: ClinicalTrials.gov public record
Updated Dec 29, 2020 · Synced Oct 4, 2026, 9:03 PM EDT
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 Oct 4, 2026, 9:03 PM EDT
Completed Phase 1 Interventional

A Phase I, Multicenter, Open-Label, Multi-Part, Dose-escalation Study of RAD1901 in Postmenopausal Women With Advanced Estrogen Receptor Positive and HER2-Negative Breast Cancer

NCT02338349
View directory record Official record
Conditions
Advanced ER+, HER2-Negative Breast Cancer
Interventions
Elacestrant
Drug
Lead sponsor
Stemline Therapeutics, Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
57 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2020
U.S. locations
1
States / cities
Waltham, Massachusetts
Source: ClinicalTrials.gov public record
Updated Aug 18, 2022 · Synced Oct 4, 2026, 9:03 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Serial FES PET/CT to Measure Hormone Expression in Patients Undergoing Endocrine Targeted Therapy

NCT04692103
View directory record Official record
Conditions
Estrogen Receptor Positive, Primary or Recurrent Breast Carcinoma, Stage IV Breast Cancer AJCC v6 and v7
Interventions
F-18 16 Alpha-Fluoroestradiol, Positron Emission Tomography, Computed Tomography, Fludeoxyglucose F-18, Laboratory Biomarker Analysis
Drug · Procedure · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2041
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Jul 1, 2026 · Synced Oct 4, 2026, 9:03 PM EDT
Completed Phase 2 Interventional Results available

Combination Chemotherapy and Filgrastim Before Surgery in Treating Patients With HER2-Positive Breast Cancer That Can Be Removed By Surgery

NCT00194779
View directory record Official record
Conditions
Estrogen Receptor-negative Breast Cancer, Estrogen Receptor-positive Breast Cancer, HER2-positive Breast Cancer, Progesterone Receptor-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage IA Breast Cancer, Stage IB Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer
Interventions
doxorubicin hydrochloride, cyclophosphamide, paclitaxel, filgrastim, capecitabine, methotrexate, vinorelbine tartrate, needle biopsy, therapeutic conventional surgery, immunohistochemistry staining method, trastuzumab, tamoxifen citrate, letrozole, laboratory biomarker analysis
Drug · Biological · Procedure + 1 more
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older · Female only
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2011
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 12, 2018 · Synced Oct 4, 2026, 9:03 PM EDT
Active, not recruiting Phase 3 Interventional

Fulvestrant and/or Anastrozole in Treating Postmenopausal Patients With Stage II-III Breast Cancer Undergoing Surgery

NCT01953588
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Invasive Ductal Breast Carcinoma, Invasive Lobular Breast Carcinoma, Recurrent Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer
Interventions
fulvestrant, anastrozole
Drug
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older · Female only
Enrollment
1,473 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2014 – 2027
U.S. locations
856
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 524 more
Source: ClinicalTrials.gov public record
Updated Jun 5, 2026 · Synced Oct 4, 2026, 9:03 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 4, 2026, 9:03 PM EDT
Completed Phase 1 Interventional

Safety, Tolerability & Potential Anti-cancer Activity of Increasing Doses of AZD5363 in Different Treatment Schedules

NCT01226316
View directory record Official record
Conditions
Advanced Solid Malignancy, Safety and Tolerability, Pharmacokinetics, Pharmacodynamics, Tumour Response, Advanced or Metastatic Breast Cancer, Ovarian Cancer, Cervical Cancer, Endometrial Cancer, PIK3CA, AKT1, PTEN, ER Positive, HER2 Positive
Interventions
AZD5363
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
285 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2024
U.S. locations
12
States / cities
Los Angeles, California • Stanford, California • West Hollywood, California + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 29, 2025 · Synced Oct 4, 2026, 9:03 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 Oct 4, 2026, 9:03 PM EDT
Terminated Phase 2 Interventional Results available

Neo-adjuvant Therapy With Anastrozole Plus Pazopanib in Stage II and III ER+ Breast Cancer

NCT01394211
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, Human Epidermal Growth Factor 2 Negative Carcinoma of Breast, Male Breast Cancer, Recurrent Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer
Interventions
anastrozole, pazopanib hydrochloride, therapeutic conventional surgery
Drug · Procedure
Lead sponsor
University of Arizona
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2012
U.S. locations
1
States / cities
Tucson, Arizona
Source: ClinicalTrials.gov public record
Updated Jul 26, 2018 · Synced Oct 4, 2026, 9:03 PM EDT
Recruiting Phase 1 Interventional

A Study to Learn About the Study Medicine Called PF-08032562 in People With Advanced or Metastatic Solid Tumors

NCT07318805
View directory record Official record
Conditions
Advanced Breast Cancer, Metastatic Breast Cancer (HR+/ HER2-), Colorectal Cancer, Metastatic Colorectal Adenocarcinoma, Triple Negative Breast Cancer
Interventions
PF-08032562, Fulvestrant, Cetuximab, Fluorouracil, Oxaliplatin, Leucovorin, Bevacizumab
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
260 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
13
States / cities
Duarte, California • Grand Rapids, Michigan • Long Island City, New York + 7 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Oct 4, 2026, 9:03 PM EDT
Terminated Phase 1 Interventional

Open-label Phase 1b Study of ARQ 092 in Combination With Anastrozole

NCT02476955
View directory record Official record
Conditions
Solid Tumors, Ovarian Cancer, Endometrial Cancer
Interventions
ARQ 092 + carboplatin + paclitaxel (Closed), ARQ 092 + paclitaxel (Closed), ARQ 092 + anastrozole
Drug
Lead sponsor
ArQule, Inc., a subsidiary of Merck Sharp & Dohme LLC, a subsidiary of Merck & Co., Inc. (Rahway, NJ USA)
Industry
Eligibility
18 Years and older · Female only
Enrollment
41 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2019
U.S. locations
5
States / cities
Grand Rapids, Michigan • New York, New York • Oklahoma City, Oklahoma + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2020 · Synced Oct 4, 2026, 9:03 PM EDT
Completed No phase listed Observational

Effects of Aromatase Inhibitor Therapy on Muscle Function

NCT03581552
View directory record Official record
Conditions
Breast Cancer, Breast Cancer Female
Interventions
Not listed
Lead sponsor
Tarah J Ballinger, MD
Other
Eligibility
18 Years and older · Female only
Enrollment
16 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Indianapolis, Indiana
Source: ClinicalTrials.gov public record
Updated May 10, 2021 · Synced Oct 4, 2026, 9:03 PM EDT
Active, not recruiting Phase 2 Interventional Results available

A Study Evaluating the Efficacy and Safety of Giredestrant Compared With Physician's Choice of Endocrine Monotherapy in Participants With Previously Treated Estrogen Receptor-Positive, HER2-Negative Locally Advanced or Metastatic Breast Cancer (acelERA Breast Cancer)

NCT04576455
View directory record Official record
Conditions
Estrogen Receptor-Positive, HER2-Negative, Locally Advanced or Metastatic Breast Cancer
Interventions
Giredestrant, Fulvestrant or an Aromatase Inhibitor (Physician Choice), LHRH Agonist
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
303 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
3
States / cities
Marietta, Georgia • Cleveland, Ohio • Tigard, Oregon
Source: ClinicalTrials.gov public record
Updated Sep 11, 2026 · Synced Oct 4, 2026, 9:03 PM EDT
Recruiting Phase 1Phase 2 Interventional

Phase 1/2 Study of ETX-636 in Participants With Advanced Solid Tumors

NCT06993844
View directory record Official record
Conditions
Advanced Solid Tumors, Advanced Breast Cancer
Interventions
ETX-636 dose escalation, ETX-636 dose escalation in combination with fulvestrant, ETX-636 dose expansion in combination with fulvestrant
Drug
Lead sponsor
Ensem Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
233 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
10
States / cities
Newport Beach, California • San Francisco, California • New Haven, Connecticut + 6 more
Source: ClinicalTrials.gov public record
Updated Jun 23, 2026 · Synced Oct 4, 2026, 9:03 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 Oct 4, 2026, 9:03 PM EDT
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 Oct 4, 2026, 9:03 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 Oct 4, 2026, 9:03 PM EDT
Terminated Phase 2 Interventional Results available

Biology Guided Therapy for Breast Cancer for ER Positive

NCT04965688
View directory record Official record
Conditions
Breast Cancer, Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer
Interventions
Biopsy-Guided Therapy Selection
Drug
Lead sponsor
Inova Health Care Services
Other
Eligibility
18 Years and older
Enrollment
2 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Fairfax, Virginia
Source: ClinicalTrials.gov public record
Updated Apr 10, 2025 · Synced Oct 4, 2026, 9:03 PM EDT