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Showing 1–24 of 400 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: ER-positive Breast Cancer Clear all
Completed Phase 3 Interventional Results available

Study to Assess the Safety and Efficacy of Ribociclib (LEE011) in Combination With Letrozole for the Treatment of Men and Pre/Postmenopausal Women With HR+ HER2- aBC

NCT02941926
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, Letrozole, Goserelin, Leuprolide
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
3,246 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2022
U.S. locations
71
States / cities
Anchorage, Alaska • Chandler, Arizona • Phoenix, Arizona + 66 more
Source: ClinicalTrials.gov public record
Updated Oct 23, 2023 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

Fulvestrant With or Without Ganetespib in HR+ Breast Cancer

NCT01560416
View directory record Official record
Conditions
Breast Cancer
Interventions
Fulvestrant, Ganetespib
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2016
U.S. locations
5
States / cities
Boston, Massachusetts • Concord, New Hampshire • Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Mar 2, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Recruiting Phase 3 Interventional

A Study to Evaluate Efficacy and Safety of Giredestrant Compared With Fulvestrant (Plus a CDK4/6 Inhibitor), in Participants With ER-Positive, HER2-Negative Advanced Breast Cancer Resistant to Adjuvant Endocrine Therapy (pionERA Breast Cancer)

NCT06065748
View directory record Official record
Conditions
Estrogen Receptor-Positive, HER2-Negative Advanced Breast Cancer
Interventions
Giredestrant, Fulvestrant, Abemaciclib, Palbociclib, Ribociclib, LHRH Agonist, FoundationOne Liquid CDx Assay (F1LCDx)
Drug · Diagnostic Test
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
1,050 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
61
States / cities
Daphne, Alabama • Auburn, California • Glendale, California + 54 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 21, 2026, 2:19 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 29, 2020 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

Lapatinib and Bevacizumab for Metastatic Breast Cancer

NCT00444535
View directory record Official record
Conditions
Neoplasms, Breast
Interventions
lapatinib, bevacizumab
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
52 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2020
U.S. locations
9
States / cities
Tucson, Arizona • San Francisco, California • Hollywood, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Oct 24, 2021 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Electronic Medical Record-Based Nudge to Reduce SLNB

NCT06006910
View directory record Official record
Conditions
Breast Cancer, Estrogen-receptor-positive Breast Cancer
Interventions
Column-based nudge in the EHR, No column-based nudge in the EHR
Behavioral
Lead sponsor
University of Pittsburgh Medical Center
Other
Eligibility
70 Years and older · Female only
Enrollment
7 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Feb 13, 2024 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 1 Interventional

Phase Ib, Dose Escalation Study of Oral LDE225 in Combination With BKM120 in Patients With Advanced Solid Tumors

NCT01576666
View directory record Official record
Conditions
Dose Escalation, Safety, Preliminary Efficacy, Advanced Solid Tumors, Metastatic Breast Cancer, Advanced Pancreatic Adenocarcinoma, Metastatic Colorectal Cancer, Recurrent Glioblastoma Multiforme, Gastric Cancer, Gastroesophageal Junction Cancer, Triple Negative Metastatic Breast Cancer, Hormone Receptor Positive (ER+/PR+, and Her2-) Metastatic Breast Cancer
Interventions
LDE225, BKM120
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
13
States / cities
Los Angeles, California • San Francisco, California • Tampa, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Dec 18, 2020 · Synced Jul 21, 2026, 2:19 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 11, 2018 · Synced Jul 21, 2026, 2:19 PM EDT
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
218
States / cities
Birmingham, Alabama • Chandler, Arizona • Gilbert, Arizona + 135 more
Source: ClinicalTrials.gov public record
Updated May 18, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 1 Interventional Results available

MM-398 (Nanoliposomal Irinotecan, Nal-IRI) to Determine Tumor Drug Levels and to Evaluate the Feasibility of Ferumoxytol Magnetic Resonance Imaging to Measure Tumor Associated Macrophages and to Predict Patient Response to Treatment

NCT01770353
View directory record Official record
Conditions
Solid Tumors, ER/PR Positive Breast Cancer, Triple Negative Breast Cancer, Metastatic Breast Cancer With Active Brain Metastasis
Interventions
Ferumoxytol, MM-398
Drug
Lead sponsor
Ipsen
Industry
Eligibility
18 Years and older
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2018
U.S. locations
7
States / cities
Scottsdale, Arizona • San Francisco, California • Tampa, Florida + 3 more
Source: ClinicalTrials.gov public record
Updated Nov 26, 2019 · Synced Jul 21, 2026, 2:19 PM EDT
Recruiting Phase 2 Interventional

Trial of Pre-operative Neratinib and Endocrine Therapy With Trastuzumab in ER-Positive, HER-2 Positive Breast Cancers

NCT04886531
View directory record Official record
Conditions
Breast Cancer, HER2-positive Breast Cancer, ER Positive Breast Cancer, PR-Positive Breast Cancer
Interventions
Neratinib, Letrozole (L) or Anastrozole (A), Trastuzumab
Drug
Lead sponsor
Ruth O'Regan
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
4
States / cities
Chicago, Illinois • Rochester, New York • Hershey, Pennsylvania + 1 more
Source: ClinicalTrials.gov public record
Updated Apr 7, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

Study to Evaluate Exemestane With and Without Entinostat (SNDX-275) in Treatment of Postmenopausal Women With Advanced Breast Cancer

NCT00676663
View directory record Official record
Conditions
Breast Cancer, Estrogen Receptor-Positive Breast Cancer, Breast Cancer, Estrogen Receptor-Positive, ER+ Breast Cancer
Interventions
entinostat, exemestane, Placebo
Drug
Lead sponsor
Syndax Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
130 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
24
States / cities
Greenbrae, California • La Jolla, California • Aurora, Colorado + 20 more
Source: ClinicalTrials.gov public record
Updated May 10, 2022 · Synced Jul 21, 2026, 2:19 PM EDT
Active, not recruiting Phase 3 Interventional Results available

A Study to Learn About a New Medicine Called Vepdegestrant (ARV-471, PF-07850327) in People Who Have Advanced Metastatic Breast Cancer

NCT05654623
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
ARV-471, Fulvestrant
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
624 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2028
U.S. locations
87
States / cities
Encinitas, California • Fountain Valley, California • Fresno, California + 69 more
Source: ClinicalTrials.gov public record
Updated Mar 17, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Terminated Phase 2 Interventional Results available

Phase 2 Study of Amcenestrant (SAR439859) Versus Physician's Choice in Locally Advanced or Metastatic ER-positive Breast Cancer

NCT04059484
View directory record Official record
Conditions
Breast Cancer Metastatic
Interventions
Amcenestrant, Fulvestrant, Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Sanofi
Industry
Eligibility
18 Years and older
Enrollment
367 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2025
U.S. locations
14
States / cities
Birmingham, Alabama • Bakersfield, California • Santa Monica, California + 11 more
Source: ClinicalTrials.gov public record
Updated Feb 23, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Active, not recruiting No phase listed Observational

Genetic Analysis in Blood and Tumor Samples From Patients With Advanced or Metastatic Estrogen Receptor Positive and HER2 Negative Breast Cancer Receiving Palbociclib and Endocrine Therapy

NCT03281902
View directory record Official record
Conditions
Advanced Breast Carcinoma, Locally Advanced Breast Carcinoma, Metastatic Breast Carcinoma, Recurrent Breast Carcinoma, Stage III Breast Cancer AJCC v7, Stage IIIA Breast Cancer AJCC v7, Stage IIIB Breast Cancer AJCC v7, Stage IIIC Breast Cancer AJCC v7, Stage IV Breast Cancer AJCC v6 and v7
Interventions
Biopsy, Biospecimen Collection, Laboratory Biomarker Analysis
Procedure · Other
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
68 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2028
U.S. locations
3
States / cities
Scottsdale, Arizona • Jacksonville, Florida • Rochester, Minnesota
Source: ClinicalTrials.gov public record
Updated Jun 8, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 1Phase 2 Interventional Results available

Trial of H3B-6545, in Women With Locally Advanced or Metastatic Estrogen Receptor-positive, HER2 Negative Breast Cancer

NCT03250676
View directory record Official record
Conditions
Breast Neoplasms, Breast Cancer, Estrogen-receptor Positive Breast Cancer, Cancer, Breast, Breast Cancer Female, Breast Adenocarcinoma, Estrogen Receptor Positive Tumor, ER Positive
Interventions
H3B-6545
Drug
Lead sponsor
Eisai Inc.
Industry
Eligibility
18 Years and older · Female only
Enrollment
151 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
23
States / cities
Goodyear, Arizona • Los Angeles, California • San Francisco, California + 18 more
Source: ClinicalTrials.gov public record
Updated Feb 24, 2025 · Synced Jul 21, 2026, 2:19 PM EDT
Completed Phase 2 Interventional Results available

A Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of Giredestrant Plus Palbociclib Compared With Anastrozole Plus Palbociclib for Postmenopausal Women With Estrogen Receptor-Positive and HER2-Negative Untreated Early Breast Cancer (coopERA Breast Cancer)

NCT04436744
View directory record Official record
Conditions
Early Breast Cancer
Interventions
Giredestrant, Anastrozole, Palbociclib, Surgery
Drug · Procedure
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older · Female only
Enrollment
221 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
10
States / cities
Burbank, California • Laguna Hills, California • San Luis Obispo, California + 7 more
Source: ClinicalTrials.gov public record
Updated Feb 1, 2023 · Synced Jul 21, 2026, 2:19 PM EDT
Recruiting Phase 2 Interventional

A Study of Imlunestrant (LY3484356) in Premenopausal Women With Estrogen Receptor-Positive (ER+) Human Epidermal Growth Factor Receptor 2 Negative (HER2-) Early Breast Cancer

NCT07287098
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Imlunestrant, Goserelin, Tamoxifen 20 mg
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older · Female only
Enrollment
600 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2029
U.S. locations
29
States / cities
Birmingham, Alabama • Chandler, Arizona • Los Angeles, California + 23 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Active, not recruiting Phase 1Phase 2 Interventional

A Phase I/II, Dose Finding and Optimization Study of [177Lu]Lu-NeoB in Combination With Capecitabine in Patients With GRPR+, ER+, HER2- Metastatic Breast Cancer After Progression on Previous Endocrine Therapy in Combination With a CDK4/6 Inhibitor.

NCT06247995
View directory record Official record
Conditions
Breast Cancer
Interventions
[68Ga]Ga-NeoB, [177Lu]Lu-NeoB, Capecitabine
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2031
U.S. locations
5
States / cities
Los Angeles, California • Newport Beach, California • Rochester, Minnesota + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Jul 21, 2026, 2:19 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 20, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Assessment of Candidate Protein Expression in Breast Cancer Specimens

NCT00918892
View directory record Official record
Conditions
Breast Cancer
Interventions
gene expression analysis, immunohistochemistry staining method, laboratory biomarker analysis
Genetic · Other
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
Not listed
Enrollment
460 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2021
U.S. locations
1
States / cities
Cleveland, Ohio
Source: ClinicalTrials.gov public record
Updated Jul 31, 2022 · Synced Jul 21, 2026, 2:19 PM EDT
Active, not recruiting Phase 2 Interventional Results available

Estradiol in Treating Patients With ER Beta Positive, Triple Negative Locally Advanced or Metastatic Breast Cancer

NCT03941730
View directory record Official record
Conditions
Advanced Triple-Negative Breast Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Triple-Negative Breast Carcinoma, Recurrent Breast Carcinoma
Interventions
Biopsy, Computed Tomography, Magnetic Resonance Imaging, Positron Emission Tomography, Therapeutic Estradiol
Procedure · Biological
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
9
States / cities
Birmingham, Alabama • San Francisco, California • Washington D.C., District of Columbia + 5 more
Source: ClinicalTrials.gov public record
Updated May 11, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Recruiting Phase 1 Interventional

A Study of AND019 in Women With ER Positive HER2 Negative Advanced or Metastatic Breast Cancer

NCT05187832
View directory record Official record
Conditions
Advanced or Metastatic Breast Cancer
Interventions
AND019 PO QD
Drug
Lead sponsor
Kind Pharmaceuticals LLC
Industry
Eligibility
18 Years and older · Female only
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Feb 26, 2026 · Synced Jul 21, 2026, 2:19 PM EDT
Completed No phase listed Observational

Studying Tissue Samples From Women Who Underwent Chemotherapy for Lymph Node-Positive Stage II or Stage IIIA Breast Cancer on Clinical Trial CLB-9741 or CLB-9344

NCT00897026
View directory record Official record
Conditions
Breast Cancer
Interventions
cyclophosphamide, doxorubicin hydrochloride, paclitaxel, fluorescence in situ hybridization, immunohistochemistry staining method
Drug · Genetic · Other
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older · Female only
Enrollment
1,195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2012
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Aug 16, 2021 · Synced Jul 21, 2026, 2:19 PM EDT