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ClinicalTrials.gov public records Last synced Sep 30, 2026, 9:42 AM EDT

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Showing 49–72 of 495 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: ER-negative Breast Cancer Clear all
Completed Phase 2 Interventional Results available

F-18 16 Alpha-Fluoroestradiol-Labeled Positron Emission Tomography in Predicting Response to First-Line Hormone Therapy in Patients With Stage IV Breast Cancer

NCT00602043
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, Progesterone Receptor-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Recurrent Breast Cancer, Stage IV Breast Cancer
Interventions
F-18 16 alpha-fluoroestradiol, fludeoxyglucose F 18, positron emission tomography, computed tomography, laboratory biomarker analysis
Radiation · Procedure · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2008 – 2014
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Feb 19, 2020 · Synced Sep 30, 2026, 9:42 AM EDT
Active, not 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
40
States / cities
Daphne, Alabama • Greenbrae, California • Harbor City, California + 34 more
Source: ClinicalTrials.gov public record
Updated Sep 14, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Withdrawn Phase 1Phase 2 Interventional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 Sep 30, 2026, 9:42 AM EDT
Completed Phase 2 Interventional Results available

Sapanisertib in Combination With Fulvestrant in Women With Advanced or Metastatic Breast Cancer After Aromatase Inhibitor Therapy

NCT02756364
View directory record Official record
Conditions
Breast Neoplasms
Interventions
Fulvestrant, Sapanisertib
Drug
Lead sponsor
Calithera Biosciences, Inc
Industry
Eligibility
18 Years and older · Female only
Enrollment
141 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2019
U.S. locations
30
States / cities
Mobile, Alabama • Bakersfield, California • Fullerton, California + 26 more
Source: ClinicalTrials.gov public record
Updated Feb 8, 2023 · Synced Sep 30, 2026, 9:42 AM EDT
Active, not recruiting Phase 2 Interventional

ELACESTRANT in Women and Men With CDK4/6 Inhibitor-Naive Estrogen Receptor Positive, HER-2 Negative Metastatic Breast Cancer Study

NCT05596409
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Elacestrant
Drug
Lead sponsor
Stemline Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
61 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
4
States / cities
Springdale, Arkansas • Chicago, Illinois • Las Vegas, Nevada + 1 more
Source: ClinicalTrials.gov public record
Updated May 7, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Terminated Phase 2 Interventional Results available

Study to Assess the Efficacy and Safety of the Epigenetic Modifying Effects of CC-486 (Oral Azacitidine) in Combination With Fulvestrant

NCT02374099
View directory record Official record
Conditions
Breast Neoplasms
Interventions
CC-486, Fulvestrant
Drug
Lead sponsor
Celgene
Industry
Eligibility
18 Years and older · Female only
Enrollment
97 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2017
U.S. locations
8
States / cities
Chandler, Arizona • Scottsdale, Arizona • Fayetteville, Arkansas + 5 more
Source: ClinicalTrials.gov public record
Updated Dec 14, 2018 · Synced Sep 30, 2026, 9:42 AM EDT
Recruiting Phase 2 Interventional

EMERALD: Endocrine Therapy oMission With Radiation in ER+ Breast Cancer: Assessing Quality of Life and Disease Control: a Prospective Phase II Trial

NCT06897488
View directory record Official record
Conditions
Breast Cancer
Interventions
Adjuvant Radiotherapy
Radiation
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
60 Years and older · Female only
Enrollment
300 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2030
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated May 15, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Active, not recruiting Phase 2 Interventional

CDK 4/6 Inhibitor, Ribociclib, With Adjuvant Endocrine Therapy for ER-positive Breast Cancer

NCT03285412
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, Endocrine therapy
Drug · Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older · Female only
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
3
States / cities
Boston, Massachusetts • Danvers, Massachusetts
Source: ClinicalTrials.gov public record
Updated Dec 22, 2025 · Synced Sep 30, 2026, 9:42 AM EDT
Active, not recruiting Phase 3 Interventional

Phase III Study to Assess AZD9833+ CDK4/6 Inhibitor in HR+/HER2-MBC With Detectable ESR1m Before Progression (SERENA-6)

NCT04964934
View directory record Official record
Conditions
ER-Positive HER2-Negative Breast Cancer
Interventions
AZD9833, AZD9833 Placebo, Anastrozole, Anastrozole placebo, Letrozole, Letrozole placebo, Palbociclib, Abemaciclib, Luteinizing hormone-releasing hormone (LHRH) agonist, Ribociclib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 130 Years
Enrollment
315 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
64
States / cities
Phoenix, Arizona • Hot Springs, Arkansas • Little Rock, Arkansas + 56 more
Source: ClinicalTrials.gov public record
Updated Sep 23, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Completed Phase 2 Interventional Results available

Cetuximab + / - Carboplatin for Estrogen Receptor-Negative, Progesterone Receptor-Negative Metastatic Breast Cancer

NCT00232505
View directory record Official record
Conditions
Breast Cancer
Interventions
cetuximab, carboplatin
Biological · Drug
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years to 120 Years · Female only
Enrollment
112 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2005 – 2012
U.S. locations
14
States / cities
Birmingham, Alabama • San Francisco, California • Washington D.C., District of Columbia + 9 more
Source: ClinicalTrials.gov public record
Updated Jun 28, 2017 · Synced Sep 30, 2026, 9:42 AM EDT
Not listed Phase 2 Interventional

Erlotinib Plus Chemotherapy for Treatment of Triple Negative Breast Cancer

NCT00491816
View directory record Official record
Conditions
Breast Cancer
Interventions
Erlotinib with neoadjuvant chemotherapy
Drug
Lead sponsor
University of Kansas Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
32 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2017
U.S. locations
1
States / cities
Kansas City, Kansas
Source: ClinicalTrials.gov public record
Updated Jan 19, 2017 · Synced Sep 30, 2026, 9:42 AM 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 Sep 30, 2026, 9:42 AM EDT
Completed Phase 2 Interventional Results available

ER Reactivation Therapy for Breast Cancer

NCT02188745
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
17B-estradiol, Letrozole, Anastrozole, Exemestane
Drug
Lead sponsor
Dartmouth-Hitchcock Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2024
U.S. locations
3
States / cities
Springfield, Massachusetts • Rochester, Minnesota • Lebanon, New Hampshire
Source: ClinicalTrials.gov public record
Updated Sep 25, 2026 · Synced Sep 30, 2026, 9:42 AM 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 9, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Recruiting Phase 1 Interventional

A Study With NKT5097 for Adults With Advanced/Metastatic Solid Tumors

NCT07029399
View directory record Official record
Conditions
HR+ Breast Cancer, Triple Negative Breast Cancer (TNBC), CCNE1 Amplified Advanced Solid Tumors, HR+ HER2- Breast Cancer
Interventions
NKT5097 CDK2/CDK4 dual degrader, Fulvestrant, Letrozole
Drug
Lead sponsor
NiKang Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
361 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
18
States / cities
Duarte, California • La Jolla, California • Denver, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Aug 28, 2026 · Synced Sep 30, 2026, 9:42 AM 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
34
States / cities
Birmingham, Alabama • Chandler, Arizona • Phoenix, Arizona + 27 more
Source: ClinicalTrials.gov public record
Updated Sep 22, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Not listed Phase 1Phase 2 Interventional

ER+/HER2- Locally Advanced or Metastatic Breast Cancer (ENZENO Study)

NCT04669587
View directory record Official record
Conditions
Estrogen Receptor-Positive, HER2-Negative, Locally Advanced Breast Cancer, Metastatic Breast Cancer
Interventions
ZB716, Palbociclib
Drug
Lead sponsor
EnhancedBio USA Inc.
Other
Eligibility
18 Years and older
Enrollment
106 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2024
U.S. locations
1
States / cities
Seattle, Washington
Source: ClinicalTrials.gov public record
Updated Mar 22, 2022 · Synced Sep 30, 2026, 9:42 AM EDT
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 Sep 30, 2026, 9:42 AM EDT
Recruiting Phase 2 Interventional

Study to Evaluate the Safety and Tolerability of Camizestrant in Combination With Atirmociclib in Women With Advanced Breast Cancer

NCT07427394
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
Camizestrant, Atirmociclib
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older · Female only
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
3
States / cities
St Louis, Missouri • East Providence, Rhode Island • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Withdrawn Phase 1Phase 2 Interventional

Study of NUV-422 in Combination With Fulvestrant in Patients With HR+HER2- aBC

NCT05191004
View directory record Official record
Conditions
Advanced Breast Cancer, Metastatic Breast Cancer, Breast Cancer, Breast Carcinoma, Cancer of the Breast, Cancer of Breast, Malignant Tumor of Breast, Breast Tumor
Interventions
NUV-422, Fulvestrant
Drug
Lead sponsor
Nuvation Bio Inc.
Industry
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
5
States / cities
Anaheim, California • Fountain Valley, California • Canton, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Jul 11, 2023 · Synced Sep 30, 2026, 9:42 AM EDT
Completed Phase 2 Interventional

Phase 2 Study of Imprime PGG and Pembrolizumab in Patients With HR+/HER2- Metastatic Breast Cancer (mBCA)

NCT05159778
View directory record Official record
Conditions
Malignant Neoplasm of Breast
Interventions
Imprime PGG, Pembrolizumab
Biological
Lead sponsor
HiberCell, Inc.
Industry
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2023
U.S. locations
16
States / cities
Tucson, Arizona • Denver, Colorado • Miami, Florida + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 22, 2023 · Synced Sep 30, 2026, 9:42 AM EDT
Recruiting Phase 2 Interventional

Imlunestrant and Abemaciclib for the Treatment of Estrogen Receptor Positive Breast Cancer in Patients With Minimal Residual Disease, MIRI Trial

NCT07191717
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, Invasive Breast Carcinoma, Localized Estrogen Receptor-Positive Breast Carcinoma, Localized Human Epidermal Growth Factor Receptor (HER2)-Negative Breast Carcinoma
Interventions
Abemaciclib, Biospecimen Collection, Imlunestrant, Questionnaire Administration, Radiologic Imaging Procedure
Drug · Procedure · Other
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Los Angeles, California
Source: ClinicalTrials.gov public record
Updated Aug 20, 2026 · Synced Sep 30, 2026, 9:42 AM EDT
Completed Phase 2 Interventional

Comparing Anastrozole-Placebo to the Combination Anastrozole-ZD1839 in Postmenopausal Patients With Estrogen Receptor and/or Progesterone Receptor Metastatic Breast Cancer

NCT00077025
View directory record Official record
Conditions
Breast Cancer
Interventions
Gefitinib, Anastrozole
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older · Female only
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2004 – 2013
U.S. locations
16
States / cities
La Jolla, California • San Diego, California • Orlando, Florida + 13 more
Source: ClinicalTrials.gov public record
Updated Jul 16, 2014 · Synced Sep 30, 2026, 9:42 AM EDT
Terminated Phase 2 Interventional Results available

Neoadjuvant Study of Palbociclib in Combination With Letrozole and Trastuzumab in Stage II-III ER+ HER2+ Breast Cancer

NCT02907918
View directory record Official record
Conditions
Breast Cancer, Cancer of Breast, Breast Carcinoma
Interventions
Palbociclib, Letrozole, Trastuzumab, Goserelin, Breast surgery, Research tumor biopsy, Research bone marrow (OPTIONAL), Research blood sample, Research blood for germline DNA, Blood for detection of circulating tumor cells
Drug · Biological · Procedure + 1 more
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
26 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
3
States / cities
Phoenix, Arizona • St Louis, Missouri • Buffalo, New York
Source: ClinicalTrials.gov public record
Updated Sep 29, 2021 · Synced Sep 30, 2026, 9:42 AM EDT