- Conditions
- Breast Cancer, ER Positive Breast Cancer
- Interventions
- Letrozole 2.5mg
- Drug
- Lead sponsor
- Dartmouth-Hitchcock Medical Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 178 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2029
- U.S. locations
- 2
- States / cities
- Lebanon, New Hampshire
Condition Directory
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 17, 2026 Report an issue
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.
Showing 325–336 of 1,133 matching trials for Breast Cancer.
Live ClinicalTrials.gov results.
Live official records
Open in full search- Conditions
- Breast Cancer Metastatic, Locally Advanced Breast Cancer (LABC), Malignant Neoplasm of Breast, Triple Negative Breast Cancer (TNBC), Hormone Receptor-Positive Breast Cancer, HER2 + Breast Cancer
- Interventions
- Two Component Product CLBR001 + ABBV-461
- Biological
- Lead sponsor
- Calibr, a division of Scripps Research
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 10 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2026
- U.S. locations
- 5
- States / cities
- Augusta, Georgia • Indianapolis, Indiana • Buffalo, New York + 2 more
- Conditions
- ER Positive, HER2 Positive Breast Cancer
- Interventions
- Elacestrant, Trastuzumab, Pertuzumab
- Drug
- Lead sponsor
- NYU Langone Health
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 50 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2030
- U.S. locations
- 1
- States / cities
- New York, New York
- Conditions
- Breast Cancer
- Interventions
- Trastuzumab, GDC-0084
- Drug
- Lead sponsor
- Dana-Farber Cancer Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 17 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2024
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- HER2-positive Breast Cancer, Leptomeningeal Metastasis, Leptomeningeal Disease
- Interventions
- Radiation Therapy, Pertuzumab, Trastuzumab
- Radiation · Drug
- Lead sponsor
- H. Lee Moffitt Cancer Center and Research Institute
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 33 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2027
- U.S. locations
- 2
- States / cities
- Tampa, Florida • Evanston, Illinois
- Conditions
- HER2 Negative Breast Cancer
- Interventions
- Ribociclib 400mg, Letrozole 2.5mg, Anastrazole 1mg, Goserelin 3.6 MG, Adjuvant chemotherapy
- Drug · Radiation
- Lead sponsor
- Yale University
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 140 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2025 – 2030
- U.S. locations
- 1
- States / cities
- New Haven, Connecticut
- Conditions
- Metastatic Breast Cancer, Locally Advanced Breast Cancer
- Interventions
- U3-1402
- Drug
- Lead sponsor
- SCRI Development Innovations, LLC
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 121 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2021 – 2025
- U.S. locations
- 11
- States / cities
- Birmingham, Alabama • Springdale, Arkansas • Duarte, California + 7 more
- Conditions
- Breast Cancer
- Interventions
- BB-1701
- Drug
- Lead sponsor
- Eisai Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 56 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2026
- U.S. locations
- 27
- States / cities
- Los Alamitos, California • Los Angeles, California • San Francisco, California + 22 more
- Conditions
- HER2-positive Breast Cancer
- Interventions
- Atezolizumab, Paclitaxel, Trastuzumab, Pertuzumab
- Drug
- Lead sponsor
- Fox Chase Cancer Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 16 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2027
- U.S. locations
- 1
- States / cities
- Philadelphia, Pennsylvania
- Conditions
- Breast Cancer
- Interventions
- T-DM1
- Drug
- Lead sponsor
- Dana-Farber Cancer Institute
- Other
- Eligibility
- 60 Years and older
- Enrollment
- 111 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2027
- U.S. locations
- 14
- States / cities
- Duarte, California • Stamford, Connecticut • Boston, Massachusetts + 10 more
- Conditions
- Breast Cancer
- Interventions
- Left Ventricular Ejection Fraction
- Diagnostic Test
- Lead sponsor
- Memorial Sloan Kettering Cancer Center
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 190 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2019 – 2027
- U.S. locations
- 8
- States / cities
- Hartford, Connecticut • Basking Ridge, New Jersey • Middletown, New Jersey + 5 more
- Conditions
- Advanced Hormone Receptor-Positive Breast Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Hormone Receptor-Positive Breast Carcinoma, Unresectable Hormone Receptor-Positive Breast Carcinoma
- Interventions
- Biopsy Procedure, Biospecimen Collection, Bone Scan, Computed Tomography, Electronic Health Record Review, Magnetic Resonance Imaging, Positron Emission Tomography, Treatment Planning, Treatment Regimen
- Procedure · Other
- Lead sponsor
- City of Hope Medical Center
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 20 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2027
- U.S. locations
- 2
- States / cities
- Duarte, California • Irvine, California
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.