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ClinicalTrials.gov public records Last synced Jun 10, 2026, 2:09 AM EDT

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Showing 25–48 of 24 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Condition: HR+/HER2- Breast Cancer Clear all
Completed No phase listed Observational Results available

RW Treatment Patterns and Outcomes in Postmenopausal HR+/HER2- mBC Patients Treated With Palbociclib Plus Letrozole as Initial Endocrine Therapy at Community Oncology Practices in the U.S.

NCT04460898
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
195 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 3, 2024 · Synced Jun 10, 2026, 2:09 AM EDT
Active, not recruiting No phase listed Observational

Prospective Study of the Prosigna Assay on Neoadjuvant Clinical Decision-making in Women With HR+/Her2- Breast Cancer

NCT03749421
View directory record Official record
Conditions
Breast Cancer
Interventions
Prosigna PAM-50 assay
Other
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2026
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Recruiting Phase 1Phase 2 Interventional

First-in-Human Study of Tersolisib (STX-478) as Monotherapy and in Combination With Other Antineoplastic Agents in Participants With Advanced Solid Tumors

NCT05768139
View directory record Official record
Conditions
Breast Cancer, Solid Tumors, Adult
Interventions
STX-478, Fulvestrant, Ribociclib, Palbociclib, Letrozole, Anastrozole, Exemestane, Tamoxifen, Abemaciclib, Imlunestrant, Metformin
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
880 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2030
U.S. locations
28
States / cities
Los Angeles, California • San Francisco, California • Aurora, Colorado + 22 more
Source: ClinicalTrials.gov public record
Updated Jun 3, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Active, not recruiting Phase 3 Interventional Results available

Study of Trastuzumab Deruxtecan (T-DXd) vs Investigator's Choice Chemotherapy in HER2-low, Hormone Receptor Positive, Metastatic Breast Cancer

NCT04494425
View directory record Official record
Conditions
Advanced or Metastatic Breast Cancer
Interventions
Trastuzumab deruxtecan, Capecitabine, Paclitaxel, Nab-Paclitaxel
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years to 105 Years
Enrollment
866 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
27
States / cities
Scottsdale, Arizona • Springdale, Arkansas • Duarte, California + 23 more
Source: ClinicalTrials.gov public record
Updated Mar 3, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Recruiting Phase 1 Interventional

RADIANT: Pre-op Radiation With Abemaciclib and Letrozole

NCT06139107
View directory record Official record
Conditions
Breast Cancer
Interventions
Abemaciclib, Letrozole
Drug
Lead sponsor
Mridula George, MD
Other
Eligibility
60 Years and older · Female only
Enrollment
15 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2032
U.S. locations
4
States / cities
Belleville, New Jersey • Livingston, New Jersey • New Brunswick, New Jersey + 1 more
Source: ClinicalTrials.gov public record
Updated Nov 13, 2025 · Synced Jun 10, 2026, 2:09 AM EDT
Completed Phase 2 Interventional

A Study to Learn About the Study Medicine PF-07220060 Together With Letrozole Compared to Letrozole Alone in Women Post Menopause

NCT06465368
View directory record Official record
Conditions
Breast Cancer
Interventions
PF-07220060, letrozole
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
121 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
10
States / cities
Barrington, Illinois • Crystal Lake, Illinois • Park Ridge, Illinois + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 30, 2025 · Synced Jun 10, 2026, 2:09 AM EDT
Recruiting Phase 1Phase 2 Interventional

Rinatabart Sesutecan (Rina-S, PRO1184, GEN1184) for Advanced Solid Tumors (GCT1184-01/ PRO1184-001)

NCT05579366
View directory record Official record
Conditions
High Grade Epithelial Ovarian Cancer, High Grade Serous Ovarian Cancer, Primary Peritoneal Carcinoma, Fallopian Tube Cancer, Endometrial Cancer, Non-small Cell Lung Cancer, Epidermal Growth Factor Receptor (EGFR)-Mutated Non-Small Cell Lung Cancer (NSCLC), Mesothelioma, Breast Adenocarcinoma, Triple Negative Breast Cancer, Hormone Receptor-positive/Her2 Negative Breast Cancer, Platinum-resistant Ovarian Cancer (PROC), Platinum Sensitive Ovarian Cancer (PSOC), Primary Refractory Ovarian Cancer, Uterine Cancer
Interventions
Rina-S, Carboplatin, Bevacizumab, Pembrolizumab
Drug
Lead sponsor
Genmab
Industry
Eligibility
18 Years and older
Enrollment
884 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
37
States / cities
Phoenix, Arizona • Tucson, Arizona • Los Angeles, California + 32 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Terminated Phase 3 Interventional

Tesetaxel Plus Reduced Dose of Capecitabine vs. Capecitabine in HER2 Negative, HR Positive, LA/MBC

NCT03326674
View directory record Official record
Conditions
Breast Cancer
Interventions
Tesetaxel and Capecitabine, Capecitabine
Drug
Lead sponsor
Odonate Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
685 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2021
U.S. locations
90
States / cities
Chandler, Arizona • Goodyear, Arizona • Tucson, Arizona + 81 more
Source: ClinicalTrials.gov public record
Updated Jul 29, 2021 · Synced Jun 10, 2026, 2:09 AM EDT
Active, not recruiting Phase 3 Interventional Results available

Abemaciclib (LY2835219) Plus Fulvestrant Compared to Placebo Plus Fulvestrant in Previously Treated Breast Cancer

NCT05169567
View directory record Official record
Conditions
Breast Neoplasm, Neoplasm Metastasis
Interventions
Abemaciclib, Fulvestrant, Placebo
Drug
Lead sponsor
Eli Lilly and Company
Industry
Eligibility
18 Years and older
Enrollment
368 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
60
States / cities
Phoenix, Arizona • Springdale, Arkansas • Fullerton, California + 52 more
Source: ClinicalTrials.gov public record
Updated Jan 15, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Completed No phase listed Observational

A Real-world Analysis of Concomitant Medication Use Among Metastatic Breast Cancer Patients Treated With CDK4/6 Inhibitors

NCT05141240
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Ribiciclib, Palbociclib, Abemaciclib
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 85 Years · Female only
Enrollment
4,650 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Dec 15, 2021 · Synced Jun 10, 2026, 2:09 AM EDT
Completed Phase 2 Interventional Results available

Neoadjuvant Endocrine Therapy in Hormone Receptor-Positive, Human Epidermal Growth Factor Receptor 2 (HER2)-Negative Node-Negative Breast Cancer

NCT03219476
View directory record Official record
Conditions
Breast Cancer, Invasive Breast Cancer
Interventions
Anastrozole, Letrozole, Exemestane, Tamoxifen
Drug
Lead sponsor
Medical College of Wisconsin
Other
Eligibility
18 Years and older · Female only
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2025
U.S. locations
1
States / cities
Milwaukee, Wisconsin
Source: ClinicalTrials.gov public record
Updated Apr 28, 2025 · Synced Jun 10, 2026, 2:09 AM EDT
Active, not recruiting Phase 3 Interventional

Study of Pembrolizumab (MK-3475) Plus Chemotherapy Versus Placebo Plus Chemotherapy for HR+/HER2- Locally Recurrent Inoperable or Metastatic Breast Cancer (MK-3475-B49/KEYNOTE-B49)

NCT04895358
View directory record Official record
Conditions
Breast Neoplasms
Interventions
pembrolizumab, paclitaxel, nab-paclitaxel, liposomal doxorubicin, capecitabine, normal saline, dextrose
Biological · Drug
Lead sponsor
Merck Sharp & Dohme LLC
Industry
Eligibility
18 Years and older
Enrollment
340 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
41
States / cities
Birmingham, Alabama • Tucson, Arizona • Monterey, California + 33 more
Source: ClinicalTrials.gov public record
Updated Mar 10, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Recruiting Phase 1 Interventional

A Trial to Evaluate Ovarian Suppression Following Subcutaneous ZOLADEX 10.8 mg in Premenopausal Women With HR+, HER2- Advanced Breast Cancer

NCT07310420
View directory record Official record
Conditions
Advanced Breast Cancer
Interventions
ZOLADEX
Drug
Lead sponsor
TerSera Therapeutics LLC
Industry
Eligibility
18 Years to 55 Years · Female only
Enrollment
88 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2027
U.S. locations
11
States / cities
Hot Springs, Arkansas • Washington D.C., District of Columbia • Ocoee, Florida + 8 more
Source: ClinicalTrials.gov public record
Updated Jun 2, 2026 · Synced Jun 10, 2026, 2:09 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 21, 2023 · Synced Jun 10, 2026, 2:09 AM EDT
Recruiting Phase 1Phase 2 Interventional

ERADICATE: A Phase Ib/II Study of Elacestrant Plus Trastuzumab Deruxtecan in Patients With CDK4/6 Inhibitor and Endocrine-resistant HR+/HER2-low or HER2-ultralow Metastatic Breast Cancer

NCT07198724
View directory record Official record
Conditions
Metastatic Breast Cancer, HER2 Low Breast Carcinoma, HER2-negative Breast Cancer, Breast Cancer, Breast Cancer Female
Interventions
Elacestrant, Trastuzumab Deruxtecan
Drug
Lead sponsor
Sarah Sammons, MD
Other
Eligibility
18 Years and older
Enrollment
65 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2038
U.S. locations
1
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated Apr 8, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Completed Phase 1 Interventional

A Study of PRT2527 in Participants With Advanced Solid Tumors

NCT05159518
View directory record Official record
Conditions
Sarcoma, Castrate Resistant Prostate Cancer, Hormone Receptor Positive HER2 Negative Breast Cancer, Non-small Cell Lung Cancer, Solid Tumors With Known MYC Amplification
Interventions
PRT2527
Drug
Lead sponsor
Prelude Therapeutics
Industry
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
8
States / cities
Denver, Colorado • Celebration, Florida • Sarasota, Florida + 4 more
Source: ClinicalTrials.gov public record
Updated Dec 10, 2023 · Synced Jun 10, 2026, 2:09 AM EDT
Terminated Phase 3 Interventional Results available

A Phase III Study of BKM120 With Fulvestrant in Patients With HR+,HER2-, AI Treated, Locally Advanced or Metastatic Breast Cancer Who Progressed on or After mTORi

NCT01633060
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
Fulvestrant, BKM120, BKM120 matching placebo
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older · Female only
Enrollment
432 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2012 – 2017
U.S. locations
37
States / cities
Mobile, Alabama • Chandler, Arizona • Fayetteville, Arkansas + 24 more
Source: ClinicalTrials.gov public record
Updated Jan 29, 2019 · Synced Jun 10, 2026, 2:09 AM EDT
Terminated Phase 1 Interventional

Ribociclib + PDR001 in Breast Cancer and Ovarian Cancer

NCT03294694
View directory record Official record
Conditions
Metastatic Hormone-Receptor-Positive (HR+) Breast Cancer, HER2-Negative Breast Cancer, Metastatic Epithelial Ovarian Cancer
Interventions
Ribociclib, PDR001, Fulvestrant
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2020
U.S. locations
3
States / cities
Boston, Massachusetts
Source: ClinicalTrials.gov public record
Updated May 30, 2025 · Synced Jun 10, 2026, 2:09 AM EDT
Recruiting Phase 1Phase 2 Interventional

Stereotactic Radiation & Abemaciclib in the Management of HR+/HER2- Breast Cancer Brain Metastases

NCT04923542
View directory record Official record
Conditions
Brain Metastases, HR+ Metastatic Breast Cancer
Interventions
Stereotactic Radiosurgery (SRS), Abemaciclib, Endocrine therapy
Radiation · Drug
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
31 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
2
States / cities
Tampa, Florida • Columbus, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 5, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Active, not recruiting Phase 3 Interventional Results available

A Phase-3, Open-Label, Randomized Study of Dato-DXd Versus Investigator's Choice of Chemotherapy (ICC) in Participants With Inoperable or Metastatic HR-Positive, HER2-Negative Breast Cancer Who Have Been Treated With One or Two Prior Lines of Systemic Chemotherapy (TROPION-Breast01)

NCT05104866
View directory record Official record
Conditions
Breast Cancer
Interventions
Dato-DXd, Capecitabine, Gemcitabine, Eribulin, Vinorelbine
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
732 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
14
States / cities
Duarte, California • Los Angeles, California • Palo Alto, California + 10 more
Source: ClinicalTrials.gov public record
Updated May 4, 2026 · Synced Jun 10, 2026, 2:09 AM EDT
Suspended Phase 1 Interventional

A Study of Gene Edited Autologous Neoantigen Targeted TCR T Cells With or Without Anti-PD-1 in Patients With Solid Tumors

NCT03970382
View directory record Official record
Conditions
Solid Tumor
Interventions
NeoTCR-P1 adoptive cell therapy, nivolumab, IL-2
Biological
Lead sponsor
PACT Pharma, Inc.
Industry
Eligibility
18 Years and older
Enrollment
21 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2022
U.S. locations
9
States / cities
Duarte, California • Los Angeles, California • Orange, California + 6 more
Source: ClinicalTrials.gov public record
Updated Aug 17, 2022 · Synced Jun 10, 2026, 2:09 AM EDT
Active, not recruiting Phase 1Phase 2 Interventional

Anastrozole, Palbociclib, Trastuzumab and Pertuzumab in HR-positive, HER2-positive Metastatic Breast

NCT03304080
View directory record Official record
Conditions
Breast Neoplasms, Breast Diseases
Interventions
Anastrozole, Palbociclib, Trastuzumab, Pertuzumab
Drug
Lead sponsor
Icahn School of Medicine at Mount Sinai
Other
Eligibility
18 Years and older
Enrollment
44 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2026
U.S. locations
5
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Jul 17, 2025 · Synced Jun 10, 2026, 2:09 AM EDT
Terminated Phase 3 Interventional Results available

A Companion Sample Collection Protocol to Support the Discovery of Breast Cancer Aberrations With Treatment of CDK4/6 Therapy/LEE011/Ribociclib

NCT03050398
View directory record Official record
Conditions
Breast Cancer
Interventions
Ribociclib, letrozole
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years and older
Enrollment
8 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2019
U.S. locations
6
States / cities
Sedona, Arizona • Long Beach, California • Charlotte, North Carolina + 3 more
Source: ClinicalTrials.gov public record
Updated May 27, 2020 · Synced Jun 10, 2026, 2:09 AM EDT
Terminated No phase listed Observational Results available

HR+/ HER2- Advanced/ Metastatic Breast Cancer Real World Treatment Patterns and Outcomes

NCT04396626
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
975 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Apr 26, 2023 · Synced Jun 10, 2026, 2:09 AM EDT