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ClinicalTrials.gov public records Last synced Oct 21, 2026, 10:19 AM EDT

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Showing 73–96 of 197 matching trials from the live ClinicalTrials.gov search.
Filters: Condition: HR+ HER2 Breast Cancer Clear all
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
216
States / cities
Birmingham, Alabama • Chandler, Arizona • Gilbert, Arizona + 132 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Terminated Not applicable Interventional Results available

Treatment Resistance Following Anti-cancer Therapies

NCT04436120
View directory record Official record
Conditions
Disease Progression
Interventions
De novo tumor tissue biopsy, Research blood draws
Procedure
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
38 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2020
U.S. locations
17
States / cities
Daphne, Alabama • Mobile, Alabama • Anchorage, Alaska + 10 more
Source: ClinicalTrials.gov public record
Updated Dec 3, 2024 · Synced Oct 21, 2026, 10:19 AM EDT
Recruiting Phase 1 Interventional

Study of RGT-490 in Patients With PIK3CA-Mutated Advanced Solid Tumors

NCT07524322
View directory record Official record
Conditions
Breast Cancer, Ovarian Cancer, Endometrial Cancer, PIK3CA Mutation, HER2- Negative Breast Cancer, Advanced Breast Cancer, Unresectable Solid Tumor, Hormone Receptor Positive Tumor, Cervical Cancer
Interventions
RGT-490
Drug
Lead sponsor
Regor Pharmaceuticals Inc.
Industry
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
5
States / cities
Los Angeles, California • Houston, Texas • San Antonio, Texas + 1 more
Source: ClinicalTrials.gov public record
Updated Jul 22, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Completed No phase listed Observational

A Real-World Study of Early Breast Cancer Patients Eligible for Treatment With CDK4/6 Inhibitors

NCT07647042
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years
Enrollment
750 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Jun 15, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Terminated Phase 1 Interventional

A Study of Felmetatug Vedotin/SGN-B7H4V in Advanced Solid Tumors

NCT05194072
View directory record Official record
Conditions
Ovarian Neoplasms, Peritoneal Neoplasms, Fallopian Tube Neoplasms, Triple Negative Breast Neoplasms, HER2 Negative Breast Neoplasms, Hormone Receptor Positive Breast Neoplasms, Endometrial Neoplasms, Carcinoma, Non-Small-Cell Lung, Cholangiocarcinoma, Gallbladder Carcinoma, Adenoid Cystic Carcinoma
Interventions
Felmetatug Vedotin, Pembrolizumab
Drug
Lead sponsor
Seagen, a wholly owned subsidiary of Pfizer
Industry
Eligibility
18 Years and older
Enrollment
250 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2025
U.S. locations
22
States / cities
Aurora, Colorado • Denver, Colorado • Celebration, Florida + 9 more
Source: ClinicalTrials.gov public record
Updated Jan 9, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Terminated Phase 2 Interventional

Tesetaxel Plus Reduced Dose of Capecitabine in Patients With HER2 Negative, HR Positive, LA/MBC

NCT03858972
View directory record Official record
Conditions
Breast Cancer
Interventions
Tesetaxel, Capecitabine
Drug
Lead sponsor
Odonate Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
152 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
9
States / cities
Whittier, California • Lakewood, Colorado • Fort Myers, Florida + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 30, 2021 · Synced Oct 21, 2026, 10:19 AM EDT
Completed No phase listed Observational

Real-World Outcomes of Patients With Metastatic Breast Cancer After Treatment With First-Line ET+CDK4/6i

NCT06975371
View directory record Official record
Conditions
Advanced/Metastatic HER2-negative Breast Cancer
Interventions
No drug
Other
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
1,415 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Oct 7, 2025 · Synced Oct 21, 2026, 10:19 AM EDT
Active, not recruiting Phase 3 Interventional

A Study of DB-1303/BNT323 vs Investigator's Choice Chemotherapy in HER2-Low, Hormone Receptor Positive Metastatic Breast Cancer (DYNASTY-Breast02)

NCT06018337
View directory record Official record
Conditions
Metastatic Breast Cancer
Interventions
DB-1303/BNT323, Capecitabine, Paclitaxel, Nab-paclitaxel
Drug
Lead sponsor
DualityBio Inc.
Industry
Eligibility
18 Years and older
Enrollment
541 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
44
States / cities
Tucson, Arizona • Fullerton, California • Los Angeles, California + 39 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Not yet recruiting Phase 2 Interventional

Targeting Aurora A Kinase to Overcome Treatment Resistance in Advanced HR+/HER2+ Breast Cancer

NCT07706179
View directory record Official record
Conditions
HR+/HER2+ Breast Cancer, Metastatic Breast Cancer
Interventions
Alisertib
Drug
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Sep 29, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Active, not recruiting Phase 2 Interventional

Pre-op Pembro + Radiation Therapy in Breast Cancer (P-RAD)

NCT04443348
View directory record Official record
Conditions
Triple Negative Breast Cancer, Hormone Receptor Positive (HR+), HER2-negative Breast Cancer, Biopsy-proven, Positive Lymph Node(s)
Interventions
Radiation Therapy Boost, Pembrolizumab, Paclitaxel, Carboplatin, Cyclophosphamide, Doxorubicin, Capecitabine
Radiation · Drug
Lead sponsor
Laura M. Spring, MD
Other
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2026
U.S. locations
10
States / cities
Washington D.C., District of Columbia • Baltimore, Maryland • Boston, Massachusetts + 6 more
Source: ClinicalTrials.gov public record
Updated Jul 13, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Recruiting Not applicable Interventional

BettER: Biomarker Driven Early Therapeutic Selection in Patients With HR+ HER2- Metastatic or Unresectable Breast Cancer

NCT05977036
View directory record Official record
Conditions
Metastatic Breast Cancer, Unresectable Breast Cancer
Interventions
DiviTum® TKa assay
Device
Lead sponsor
Washington University School of Medicine
Other
Eligibility
18 Years and older
Enrollment
145 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2035
U.S. locations
1
States / cities
St Louis, Missouri
Source: ClinicalTrials.gov public record
Updated Oct 9, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Terminated No phase listed Observational

HER-Seq: A Blood-based Screening Study to Identify Patients With HER2 Mutations for Enrollment Into Clinical Research Studies of Neratinib

NCT03786107
View directory record Official record
Conditions
Hormone Receptor-Positive, HER2-Negative Metastatic Breast Cancer, Metastatic Cervical Cancer
Interventions
Almac HER-Seq Assay
Diagnostic Test
Lead sponsor
Puma Biotechnology, Inc.
Industry
Eligibility
18 Years and older
Enrollment
1,583 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2021
U.S. locations
1
States / cities
Pittsburgh, Pennsylvania
Source: ClinicalTrials.gov public record
Updated May 19, 2021 · Synced Oct 21, 2026, 10:19 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 Oct 21, 2026, 10:19 AM EDT
Terminated Phase 1Phase 2 Interventional

Phase Ib/II Trial of Abemaciclib and Elacestrant in Patients With Brain Metastasis Due to HR+/Her2- Breast Cancer

NCT04791384
View directory record Official record
Conditions
Breast Cancer
Interventions
Abemaciclib, Elacestrant
Drug
Lead sponsor
Criterium, Inc.
Industry
Eligibility
18 Years and older
Enrollment
5 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2024
U.S. locations
4
States / cities
Aurora, Colorado • Miami Beach, Florida • Durham, North Carolina + 1 more
Source: ClinicalTrials.gov public record
Updated Mar 31, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Completed No phase listed Observational

A Real-world Study of Effectiveness and Safety in HR+/HER2- Breast Cancer Patients Treated With Ribociclib or Alpelisib

NCT06705504
View directory record Official record
Conditions
Hormone Receptor Positive HER-2 Negative Breast Cancer
Interventions
Not listed
Lead sponsor
Novartis
Industry
Eligibility
18 Years and older
Enrollment
435 participants
Timeline
2021 – 2023
U.S. locations
1
States / cities
East Hanover, New Jersey
Source: ClinicalTrials.gov public record
Updated Nov 26, 2024 · Synced Oct 21, 2026, 10:19 AM EDT
Active, not recruiting Phase 2 Interventional Results available

A Study to Assess Overall Response Rate by Inducing an Inflammatory Phenotype in Metastatic BReast cAnCEr With the Oncolytic Reovirus PeLareorEp in CombinaTion With Anti-PD-L1 Avelumab and Paclitaxel - BRACELET-1 Study

NCT04215146
View directory record Official record
Conditions
Breast Cancer Metastatic
Interventions
Paclitaxel, Pelareorep, Avelumab
Drug · Biological
Lead sponsor
Oncolytics Biotech
Industry
Eligibility
18 Years and older · Female only
Enrollment
48 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2025
U.S. locations
18
States / cities
Miami, Florida • Urbana, Illinois • Indianapolis, Indiana + 13 more
Source: ClinicalTrials.gov public record
Updated Jan 16, 2025 · Synced Oct 21, 2026, 10:19 AM EDT
Recruiting Phase 3 Interventional

T-DXd Based Therapy Followed by Endocrine Therapy Plus Dual HER2 Blockade in First-line HER2+/ HR+ Metastatic Breast Cancer and Retreatment With T-DXd

NCT07683754
View directory record Official record
Conditions
Advanced Breast Cancer, Metastatic Breast Cancer, HER2 Positive, HR Positive
Interventions
Trastuzumab deruxtecan, Trastuzumab, Pertuzumab, Endocrine Therapy, Palbociclib
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2030
U.S. locations
5
States / cities
Columbia, Maryland • Las Vegas, Nevada • Nashville, Tennessee + 2 more
Source: ClinicalTrials.gov public record
Updated Oct 16, 2026 · Synced Oct 21, 2026, 10:19 AM EDT
Completed No phase listed Observational Results available

Patient Characteristics, Treatment Patterns, and Clinical Outcomes in Patients Diagnosed With HR+/HER2 Advanced/Metastatic Breast Cancer on Palbociclib + Aromatase Inhibitor (AI) Combination Therapy

NCT04394247
View directory record Official record
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
242 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020
U.S. locations
1
States / cities
San Francisco, California
Source: ClinicalTrials.gov public record
Updated Mar 21, 2023 · Synced Oct 21, 2026, 10:19 AM EDT
Active, not recruiting No phase listed Observational

A Real-life Study to Understand the Use and Effects of Palbociclib in US Patients With Breast Cancer

NCT06495164
View directory record Official record
Conditions
Breast Cancer, Malignant Neoplasm of Breast
Interventions
Palbociclib, Aromatase inhibitor, Ribociclib, Abemaciclib
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2026
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Nov 25, 2025 · Synced Oct 21, 2026, 10:19 AM 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 Oct 13, 2026 · Synced Oct 21, 2026, 10:19 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 16, 2025 · Synced Oct 21, 2026, 10:19 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 16, 2021 · Synced Oct 21, 2026, 10:19 AM EDT
Recruiting Phase 1Phase 2 Interventional

A Study of Invikafusp Alfa (STAR0602), a Selective T Cell Receptor (TCR)-Targeting, Bifunctional Antibody-fusion Molecule, in Combination With Sacituzumab Govitecan in Participants With Advanced Solid Tumors

NCT06827613
View directory record Official record
Conditions
Triple Negative Locally Advanced Non-resectable Breast Cancer, HR+, HER2-, Advanced Breast Cancer
Interventions
STAR0602, Sacituzumab Govitecan (SG)
Drug
Lead sponsor
Marengo Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
6
States / cities
Los Angeles, California • Boston, Massachusetts • Columbus, Ohio + 2 more
Source: ClinicalTrials.gov public record
Updated Sep 24, 2025 · Synced Oct 21, 2026, 10:19 AM EDT
Recruiting Phase 1 Interventional

Open-Label Study of BBO-10203 in Subjects With Advanced Solid Tumors

NCT06625775
View directory record Official record
Conditions
Solid Tumor, Adult, Metastatic Breast Cancer, Advanced Breast Cancer, HER2 Mutation-Related Tumors, HER2-positive Metastatic Breast Cancer, KRAS Mutant Metastatic Colorectal Cancer, Metastatic Lung Cancer, Metastatic Colorectal Cancer, Advanced Lung Cancer, HR-positive, HER2-negative Advanced Breast Cancer, HER2-positive Advanced Breast Cancer
Interventions
BBO-10203, Trastuzumab, Fulvestrant, Ribociclib, FOLFOX, Bevacizumab
Drug
Lead sponsor
TheRas, Inc., d/b/a BBOT (BridgeBio Oncology Therapeutics)
Industry
Eligibility
18 Years and older
Enrollment
392 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
19
States / cities
Duarte, California • Los Angeles, California • San Diego, California + 13 more
Source: ClinicalTrials.gov public record
Updated Oct 1, 2026 · Synced Oct 21, 2026, 10:19 AM EDT