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ClinicalTrials.gov public records Last synced Sep 17, 2026, 4:08 AM EDT

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Showing 1–24 of 228 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: ER-Positive HER2-Negative Breast Cancer Clear all
Active, not recruiting Phase 2 Interventional

DNA-guided Second Line Adjuvant Therapy for High Residual Risk, Estrogen Receptor Positive, HER-2 Negative Breast Cancer (DARE)

NCT04567420
View directory record Official record
Conditions
Breast Cancer
Interventions
Palbociclib, Fulvestrant, Adjuvant Therapy
Drug
Lead sponsor
Criterium, Inc.
Industry
Eligibility
Not listed
Enrollment
70 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
19
States / cities
Tucson, Arizona • Los Angeles, California • Aurora, Colorado + 15 more
Source: ClinicalTrials.gov public record
Updated Jul 7, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Terminated Phase 1 Interventional

RO4929097 and Letrozole in Treating Post-Menopausal Women With Hormone Receptor-Positive Stage II or Stage III Breast Cancer

NCT01208441
View directory record Official record
Conditions
Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage II Breast Cancer, Stage IIIA Breast Cancer
Interventions
letrozole, gamma-secretase/Notch signalling pathway inhibitor RO4929097, therapeutic conventional surgery, breast biopsy, diagnostic laboratory biomarker analysis, pharmacological study
Drug · Procedure · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
Started 2010
U.S. locations
3
States / cities
Birmingham, Alabama • Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Sep 29, 2013 · Synced Sep 17, 2026, 4:08 AM EDT
Active, not recruiting Phase 2 Interventional

Radiation Therapy Before Surgery in Treating Patients With Hormone Receptor Positive, HER2 Negative Breast Cancer

NCT03359954
View directory record Official record
Conditions
Estrogen Receptor Positive, HER2/Neu Negative, Invasive Breast Carcinoma, Progesterone Receptor Positive
Interventions
Radiation Therapy, Therapeutic Conventional Surgery
Radiation · Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
Houston, Texas
Source: ClinicalTrials.gov public record
Updated Sep 13, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 2 Interventional Results available

TAK-228 Plus Tamoxifen in Patients With ER-Positive, HER2-negative Breast Cancer

NCT02988986
View directory record Official record
Conditions
Estrogen Receptor Positive Breast Cancer
Interventions
TAK-228, Tamoxifen
Drug
Lead sponsor
The Methodist Hospital Research Institute
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
3
States / cities
Houston, Texas • Sugar Land, Texas
Source: ClinicalTrials.gov public record
Updated Sep 21, 2021 · Synced Sep 17, 2026, 4:08 AM EDT
Withdrawn Phase 1 Interventional Accepts healthy volunteers

ISPY-P1.01:Evaluating the Safety of Weekly Paclitaxel With Trastuzumab Duocarmazine (SYD985) in Patients With Metastatic Cancer

NCT04602117
View directory record Official record
Conditions
HER2-positive Breast Cancer, HER2 Low, SYD-985, SYD985, Vic-trastuzumab Duocarmazine, Metastatic Cancer, Metastatic Breast Cancer, Metastatic Gastrointestinal Carcinoid Tumor, Metastatic, HER2 Low Breast Cancer, GastroEsophageal Cancer, Gastroesophageal Adenocarcinoma, Endometrium Tumor, Ovarian Cancer, Ovarian Carcinoma, HER2-positive Gastric Cancer, HER2-positive Metastatic Breast Cancer, HER2 Mutation-Related Tumors, HER-2 Protein Overexpression, HER2 Low HR Positive, HR Positive, Hormone Receptor-positive Breast Cancer, Estrogen Receptor Positive Tumor, Progesterone Receptor-positive Breast Cancer, Triple Negative Breast Cancer, Hormone Receptor Negative Breast Carcinoma, Bladder Cancer
Interventions
Vic-trastuzumab duocarmazine (SYD985) + paclitaxel
Drug
Lead sponsor
QuantumLeap Healthcare Collaborative
Other
Eligibility
18 Years and older
Healthy volunteers
Accepts healthy volunteers
Timeline
2021
U.S. locations
1
States / cities
Aurora, Colorado
Source: ClinicalTrials.gov public record
Updated Nov 17, 2023 · Synced Sep 17, 2026, 4:08 AM EDT
Active, not recruiting Phase 2 Interventional

A Study to Learn About the Study Medicine Called PF-07220060 in Combination With Fulvestrant in People With HR-positive, HER2-negative Advanced or Metastatic Breast Cancer Who Progressed After a Prior Line of Treatment

NCT06105632
View directory record Official record
Conditions
Advanced or Metastatic Breast Cancer
Interventions
PF-07220060 CDK4 inhibitor, Fulvestrant, Everolimus, Exemestane
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
333 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
9
States / cities
Irvine, California • Los Angeles, California • Newport Beach, California + 3 more
Source: ClinicalTrials.gov public record
Updated Aug 19, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 2 Interventional Results available

Study of 2 Ribociclib Doses in Combination With Aromatase Inhibitors in Women With HR+, HER2- Advanced Breast Cancer

NCT03822468
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, Anastrozole, Letrozole, Goserelin
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years · Female only
Enrollment
376 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2024
U.S. locations
14
States / cities
Mobile, Alabama • Greenbrae, California • Longmont, Colorado + 11 more
Source: ClinicalTrials.gov public record
Updated Oct 15, 2025 · Synced Sep 17, 2026, 4:08 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Study of Lenvatinib, Pembrolizumab, and Fulvestrant in People With Breast Cancer

NCT06110793
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Lenvatinib, Pembrolizuma, Fulvestrant
Drug
Lead sponsor
Memorial Sloan Kettering Cancer Center
Other
Eligibility
18 Years and older
Enrollment
56 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
7
States / cities
Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more
Source: ClinicalTrials.gov public record
Updated Jul 5, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Active, not recruiting Phase 3 Interventional

Gedatolisib Plus Fulvestrant With or Without Palbociclib vs Standard-of-Care for the Treatment of Patients With Advanced or Metastatic HR+/HER2- Breast Cancer (VIKTORIA-1)

NCT05501886
View directory record Official record
Conditions
Breast Cancer
Interventions
Gedatolisib, Palbociclib, Fulvestrant, Alpelisib
Drug
Lead sponsor
Celcuity Inc
Industry
Eligibility
18 Years and older
Enrollment
701 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2026
U.S. locations
71
States / cities
Birmingham, Alabama • Goodyear, Arizona • Jonesboro, Arkansas + 62 more
Source: ClinicalTrials.gov public record
Updated Feb 9, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Terminated Phase 2 Interventional Results available

Palbociclib in Treating Patients With Metastatic HER-2 Positive Breast Cancer With Brain Metastasis

NCT02774681
View directory record Official record
Conditions
Breast Carcinoma Metastatic in the Brain, Estrogen Receptor Negative, HER2/Neu Negative, HER2/Neu Positive, Progesterone Receptor Negative, Recurrent Breast Carcinoma, Stage IV Breast Cancer
Interventions
Cognitive Assessment, Palbociclib, Quality-of-Life Assessment, Trastuzumab
Procedure · Drug · Biological
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2020
U.S. locations
3
States / cities
Chicago, Illinois • Lake Forest, Illinois • Houston, Texas
Source: ClinicalTrials.gov public record
Updated Apr 13, 2020 · Synced Sep 17, 2026, 4:08 AM EDT
Withdrawn Phase 2 Interventional

Fulvestrant + Neratinib In Breast Cancer

NCT04901299
View directory record Official record
Conditions
Stage IV (Metastatic) Breast Cancer, Metastatic Breast Cancer, ER Positive Breast Cancer, PR-Positive Breast Cancer, HER2-negative Breast Cancer, Invasive Breast Cancer
Interventions
NERATINIB, FULVESTRANT
Drug
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2025
U.S. locations
2
States / cities
Boston, Massachusetts • Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated Jul 31, 2023 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 3 Interventional Results available

A Study of Palbociclib (PD-0332991) + Letrozole vs. Letrozole For 1st Line Treatment Of Postmenopausal Women With ER+/HER2- Advanced Breast Cancer (PALOMA-2)

NCT01740427
View directory record Official record
Conditions
Breast Neoplasms
Interventions
PD-0332991, Letrozole, Placebo
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
666 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2023
U.S. locations
136
States / cities
Bellflower, California • Beverly Hills, California • Fullerton, California + 83 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2024 · Synced Sep 17, 2026, 4:08 AM 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 1, 2024 · Synced Sep 17, 2026, 4:08 AM 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 10, 2025 · Synced Sep 17, 2026, 4:08 AM EDT
Terminated Phase 1 Interventional

Lapatinib Ditosylate and Akt Inhibitor MK2206 in Treating Women With Metastatic Breast Cancer

NCT01281163
View directory record Official record
Conditions
Estrogen Receptor Negative, Estrogen Receptor Positive, HER2/Neu Positive, Progesterone Receptor Negative, Progesterone Receptor Positive, Recurrent Breast Carcinoma, Stage IV Breast Cancer
Interventions
Akt Inhibitor MK2206, Laboratory Biomarker Analysis, Lapatinib Ditosylate, Pharmacogenomic Study, Pharmacological Study
Drug · Other
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older · Female only
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2011 – 2013
U.S. locations
5
States / cities
New Haven, Connecticut • Boston, Massachusetts • Ann Arbor, Michigan + 2 more
Source: ClinicalTrials.gov public record
Updated Aug 26, 2015 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 2 Interventional

An Open-Label Multicenter Phase 2 Window of Opportunity Study Evaluating Ganetespib in Women With Breast Cancer

NCT01677455
View directory record Official record
Conditions
Breast Cancer, HER-2 Positive Breast Cancer, Triple Negative Breast Cancer, ER/Progressive Response (PR) + Refractory to Prior Hormonal Treatment
Interventions
ganetespib
Drug
Lead sponsor
Synta Pharmaceuticals Corp.
Industry
Eligibility
18 Years and older · Female only
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2015
U.S. locations
8
States / cities
Birmingham, Alabama • Altanta, Georgia • Boston, Massachusetts + 5 more
Source: ClinicalTrials.gov public record
Updated Nov 4, 2015 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 3 Interventional Results available

A Phase III Randomized Trial of Metformin vs Placebo in Early Stage Breast Cancer

NCT01101438
View directory record Official record
Conditions
Breast Cancer
Interventions
metformin hydrochloride, placebo
Drug · Other
Lead sponsor
Canadian Cancer Trials Group
Network
Eligibility
18 Years to 74 Years
Enrollment
3,649 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2023
U.S. locations
280
States / cities
Anchorage, Alaska • Fairbanks, Alaska • Scottsdale, Arizona + 213 more
Source: ClinicalTrials.gov public record
Updated Sep 12, 2023 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 2 Interventional Results available

Radiation Therapy, Palbociclib, and Hormone Therapy in Treating Breast Cancer Patients With Bone Metastasis

NCT03691493
View directory record Official record
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Estrogen Receptor Positive, HER2/Neu Negative, Metastatic Breast Carcinoma, Metastatic Malignant Neoplasm in the Bone, Progesterone Receptor Positive, Prognostic Stage IV Breast Cancer AJCC v8
Interventions
Anastrozole, Exemestane, Fulvestrant, Letrozole, Palbociclib, Radiation Therapy, Tamoxifen
Drug · Radiation
Lead sponsor
Emory University
Other
Eligibility
18 Years and older
Enrollment
36 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
10
States / cities
Atlanta, Georgia • Augusta, Georgia • Columbus, Georgia + 2 more
Source: ClinicalTrials.gov public record
Updated Feb 16, 2025 · Synced Sep 17, 2026, 4:08 AM EDT
Active, not recruiting Phase 3 Interventional Results available

S0221 Adjuvant Doxorubicin, Cyclophosphamide, and Paclitaxel in Treating Patients With Breast Cancer

NCT00070564
View directory record Official record
Conditions
Breast Cancer
Interventions
pegfilgrastim, AC regimen, cyclophosphamide, doxorubicin hydrochloride, paclitaxel
Biological · Drug
Lead sponsor
SWOG Cancer Research Network
Network
Eligibility
18 Years and older
Enrollment
3,294 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2003 – 2027
U.S. locations
539
States / cities
Anniston, Alabama • Birmingham, Alabama • Mobile, Alabama + 369 more
Source: ClinicalTrials.gov public record
Updated Aug 27, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Withdrawn Phase 2 Interventional

Breast-Conserving Surgery Followed by Radiation Therapy With MRI-Detected Stage I or Stage II Breast Cancer

NCT01100489
View directory record Official record
Conditions
Ductal Breast Carcinoma in Situ, Estrogen Receptor-negative Breast Cancer, Estrogen Receptor-positive Breast Cancer, HER2-negative Breast Cancer, HER2-positive Breast Cancer, Invasive Ductal Breast Carcinoma, Invasive Lobular Breast Carcinoma, Male Breast Cancer, Medullary Ductal Breast Carcinoma With Lymphocytic Infiltrate, Mucinous Ductal Breast Carcinoma, Papillary Ductal Breast Carcinoma, Progesterone Receptor-negative Breast Cancer, Progesterone Receptor-positive Breast Cancer, Stage I Breast Cancer, Stage II Breast Cancer, Tubular Ductal Breast Carcinoma
Interventions
external beam radiation therapy, questionnaire administration, therapeutic conventional surgery
Radiation · Other · Procedure
Lead sponsor
Case Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Healthy volunteers
Healthy volunteers not accepted
Timeline
2010 – 2011
U.S. locations
3
States / cities
Cleveland, Ohio • Orange, Ohio • Westlake, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 7, 2011 · Synced Sep 17, 2026, 4:08 AM EDT
Completed Phase 1Phase 2 Interventional

A Phase 1/2 Trial of ARV-471 Alone and in Combination With Palbociclib (IBRANCE®) in Patients With ER+/HER2- Locally Advanced or Metastatic Breast Cancer

NCT04072952
View directory record Official record
Conditions
Breast Cancer
Interventions
ARV-471, ARV-471 in combination with palbociclib (IBRANCE®)
Drug
Lead sponsor
Arvinas Estrogen Receptor, Inc.
Industry
Eligibility
18 Years and older
Enrollment
217 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
16
States / cities
Palo Alto, California • San Francisco, California • Santa Monica, California + 12 more
Source: ClinicalTrials.gov public record
Updated Apr 14, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Terminated Phase 2 Interventional Results available

Phase II Open-Label Trial of Tarceva in Women With Metastatic, Hormone- and HER2-Negative Breast Cancer

NCT00597597
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Erlotinib
Drug
Lead sponsor
Rush University Medical Center
Other
Eligibility
18 Years and older · Female only
Enrollment
11 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2007 – 2011
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated May 16, 2023 · Synced Sep 17, 2026, 4:08 AM EDT
Recruiting Phase 2 Interventional

NeoTAILOR: ABiomarker-directed Approach to Guide Neoadjuvant Therapy for Patients With Stage II/III ER-positive, HER2-negative Breast Cancer

NCT05837455
View directory record Official record
Conditions
Breast Cancer, Cancer of the Breast
Interventions
VENTANA MIB-1 Ki67 assay, Oncotype DX® Recurrence Score, PAM50-based Prosigna breast cancer gene signature assay, Anastrozole, Combination anthracycline and/or taxane based treatment
Device · Drug
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older · Female only
Enrollment
81 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Apr 12, 2026 · Synced Sep 17, 2026, 4:08 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Study to Evaluate the Effect of GDC-4198 Alone and in Combination With Giredestrant Versus Abemaciclib and Giredestrant in Participants With Locally Advanced or Metastatic Estrogen Receptor-Positive (ER+), Human Epidermal Growth Factor Receptor-Negative (HER2-) Breast Cancer

NCT07100106
View directory record Official record
Conditions
Breast Cancer
Interventions
GDC-4198, Giredestrant, Abemaciclib
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
285 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
28
States / cities
Tucson, Arizona • Duarte, California • Irvine, California + 24 more
Source: ClinicalTrials.gov public record
Updated Sep 7, 2026 · Synced Sep 17, 2026, 4:08 AM EDT