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Breast Cancer clinical trials

Directory of U.S. ClinicalTrials.gov public records for Breast Cancer. Browse Breast Cancer recruiting trials, filter by phase, sponsor, location, or intervention, and open the official ClinicalTrials.gov study record for each result.

By Clinical Trials Finder Guidance last reviewed June 10, 2026 Data synced October 18, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 18, 2026, 8:26 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Official matching trials
1133
Shown on this page
12
Current sort
Recently updated
Condition scope
Breast Cancer
Additional filters apply within this condition.

These results were retrieved from the live ClinicalTrials.gov registry. Filters and sort order apply to this result list.

How Breast Cancer studies are organized in the registry

Breast cancer listings are usually subtype-specific: receptor status appears directly in titles and condition fields, so subtype terms narrow results far better than stage words alone. Many studies also restrict to either early-stage or metastatic settings, which is visible in the title or eligibility section of the official record.

Terms that often appear in related listings

These describe how studies tend to be titled and grouped on ClinicalTrials.gov — they are search vocabulary, not medical guidance.

Filter and sort this condition

These controls apply only within Breast Cancer. Default order is Recently updated. Add location, sponsor, treatment, or recruitment status to narrow this condition page further.

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Showing 397–408 of 1,133 matching trials for Breast Cancer.
Live ClinicalTrials.gov results.
Local aggregate panels are unavailable or hidden for filtered views. The result list above identifies its data source.

Live official records

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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
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma
Interventions
Binimetinib, Biopsy Procedure, Biospecimen Collection, Bone Scan, Computed Tomography, Echocardiography Test, Fulvestrant, Magnetic Resonance Imaging, Multigated Acquisition Scan
Drug · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
192
States / cities
Birmingham, Alabama • Kingman, Arizona • Arroyo Grande, California + 155 more
Active, not recruiting Phase 1Phase 2 Interventional

Study of Oral MRT-2359 in Selected Cancer Patients

NCT05546268
Conditions
NSCLC, SCLC, High Grade Neuroendocrine Cancer, DLBCL, L-MYC and N-MYC Amplified Solid Tumors, NSCLC With High or Low L-MYC or N-MYC Expression, HR-positive, HER2-negative Breast Cancer, Prostate Cancer
Interventions
Oral MRT-2359
Drug
Lead sponsor
Monte Rosa Therapeutics, Inc
Industry
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
17
States / cities
Scottsdale, Arizona • San Diego, California • New Haven, Connecticut + 13 more
Conditions
Breast Cancer Stage I, Breast Cancer Stage II, Breast Cancer Stage III, Carcinoma, Breast
Interventions
Neoadjuvant endocrine therapy
Drug
Lead sponsor
George Washington University
Other
Eligibility
21 Years and older
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
1
States / cities
Washington D.C., District of Columbia
Conditions
HER2-positive Breast Cancer
Interventions
HER-2 pulsed DC1, Trastuzumab, Pertuzumab, Paclitaxel, Resection surgery
Biological · Drug · Procedure
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
53 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
1
States / cities
Tampa, Florida
Conditions
Breast Cancer
Interventions
Trastuzumab deruxtecan, Capecitabine, Lapatinib, Trastuzumab
Drug
Lead sponsor
Daiichi Sankyo
Industry
Eligibility
18 Years and older
Enrollment
608 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2025
U.S. locations
41
States / cities
Chandler, Arizona • Los Angeles, California • Monterey, California + 34 more
Conditions
Breast Cancer
Interventions
Not listed
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older · Female only
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018
U.S. locations
1
States / cities
New York, New York
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
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
Conditions
Her 2 Positive Breast Cancer, Breast Cancer Female, Breast Cancer Metastatic
Interventions
Sacituzumab Govitecan, Trastuzumab, Trastuzumab and Hyaluronidase-oysk
Drug
Lead sponsor
Adrienne G. Waks
Other
Eligibility
18 Years and older
Enrollment
28 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
4
States / cities
Miami, Florida • Boston, Massachusetts • South Weymouth, Massachusetts + 1 more
Conditions
Breast Cancer
Interventions
Trastuzumab, Paclitaxel, Trastuzumab emtansine
Drug
Lead sponsor
Dana-Farber Cancer Institute
Other
Eligibility
18 Years and older
Enrollment
512 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2022
U.S. locations
85
States / cities
Birmingham, Alabama • San Francisco, California • Hartford, Connecticut + 62 more
Conditions
HER2 Negative Breast Carcinoma, Recurrent Breast Carcinoma, Stage IIIA Breast Cancer, Stage IIIB Breast Cancer, Stage IIIC Breast Cancer, Stage IV Breast Cancer, Stage III Breast Cancer
Interventions
CD105/Yb-1/SOX2/CDH3/MDM2-polyepitope Plasmid DNA Vaccine, Laboratory Biomarker Analysis
Biological · Other
Lead sponsor
University of Washington
Other
Eligibility
18 Years and older
Enrollment
42 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2015 – 2026
U.S. locations
1
States / cities
Seattle, Washington

About this Breast Cancer clinical trials directory page

What this page lists
U.S. ClinicalTrials.gov public records that list Breast Cancer as a study condition, including recruiting, not yet recruiting, and active not recruiting trials across phase 1, phase 2, and phase 3.
How to narrow results
Use the filters above to scope by intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, age, or NCT ID within Breast Cancer.
Where the data comes from
Records are sourced from the official ClinicalTrials.gov public API. Each result links back to the official study page, which is the source of truth for eligibility, enrollment, and contact information.
What this page does not do
No medical advice, eligibility judgments, treatment recommendations, ranking of trials by quality, or AI-generated medical summaries.

Related: all condition pages, browse by drug or therapy, browse by U.S. city, browse by sponsor, or open the full search for Breast Cancer.