- Conditions
- Breast Cancer, Stage 0
- Interventions
- Breast MRI, Laboratory Biomarker Analysis
- Diagnostic Test · Other
- Lead sponsor
- University of Washington
- Other
- Eligibility
- 18 Years to 80 Years · Female only
- Enrollment
- 122 participants
- Timeline
- 2018 – 2032
- U.S. locations
- 1
- States / cities
- Seattle, Washington
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 November 15, 2026 Report an issue
All trial information on this site comes from the official ClinicalTrials.gov public API (clinicaltrials.gov/api/v2), run by the U.S. National Library of Medicine. We only display that public information; we do not add opinions, endorsements, or any other intent. Always review the official ClinicalTrials.gov record for the latest information.
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.
These describe how studies tend to be titled and grouped on ClinicalTrials.gov — they are search vocabulary, not medical guidance.
Live official records
Open in full search- Conditions
- ERα+ Breast Cancer, ESR1 Gene Mutation
- Interventions
- Tamoxifen, FES PET/CT
- Drug · Diagnostic Test
- Lead sponsor
- University of Wisconsin, Madison
- Other
- Eligibility
- 19 Years and older
- Enrollment
- 12 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2027
- U.S. locations
- 2
- States / cities
- Madison, Wisconsin
- Conditions
- Breast Cancer
- Interventions
- Elacestrant, Onapristone
- Drug
- Lead sponsor
- Context Therapeutics Inc.
- Industry
- Eligibility
- 18 Years and older
- Enrollment
- 4 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2023
- U.S. locations
- 3
- States / cities
- Phoenix, Arizona • Zion, Illinois • Nashville, Tennessee
- Conditions
- Breast Cancer, Breast Abnormalities, Breast Lesion, Breast Asymmetry
- Interventions
- Wearable Ultrasound Patch
- Device
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years to 85 Years · Female only
- Enrollment
- 50 participants
- Healthy volunteers
- Accepts healthy volunteers
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Metastatic Malignant Neoplasm to Brain, Recurrent Brain Metastases, Progressive Brain Metastases
- Interventions
- Palbociclib, Pembrolizumab
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 45 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2017 – 2029
- U.S. locations
- 2
- States / cities
- Boston, Massachusetts
- Conditions
- Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Malignant Neoplasm in the Brain, Metastatic Triple-Negative Breast Carcinoma, Prognostic Stage IV Breast Cancer AJCC v8
- Interventions
- Anti-HER2/HER3 Dendritic Cell Vaccine, Pembrolizumab
- Biological
- Lead sponsor
- Roswell Park Cancer Institute
- Other
- Eligibility
- 18 Years and older · Female only
- Enrollment
- 23 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2022 – 2028
- U.S. locations
- 3
- States / cities
- Tampa, Florida • Buffalo, New York • Charlottesville, Virginia
- Conditions
- Breast Cancer
- Interventions
- Vinorelbine, Trastuzumab, Avelumab, Utomilumab
- Drug
- Lead sponsor
- Adrienne G. Waks
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 100 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2018 – 2027
- U.S. locations
- 17
- States / cities
- Birmingham, Alabama • San Francisco, California • Washington D.C., District of Columbia + 12 more
- Conditions
- Invasive Breast Cancer
- Interventions
- Proton Radiation
- Radiation
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 70 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2011 – 2022
- U.S. locations
- 1
- States / cities
- Boston, Massachusetts
- Conditions
- Cancer Metastatic, Symptoms and Signs, Quality of Life
- Interventions
- Symptom Management and Survivorship Handbook + Coaching, Symptom Management and Survivorship Handbook
- Behavioral
- Lead sponsor
- University of Arizona
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 200 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2026 – 2027
- U.S. locations
- 1
- States / cities
- Tucson, Arizona
- Conditions
- HER2 + Breast Cancer
- Interventions
- Not listed
- Lead sponsor
- Priyanka Sharma
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 1,000 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2024 – 2044
- U.S. locations
- 6
- States / cities
- Overland Park, Kansas • Westwood, Kansas • Lee's Summit, Missouri
- Conditions
- Invasive Breast Cancer, Triple Negative Breast Cancer, ER-Negative Breast Cancer, PR-Negative Breast Cancer, HER2-negative Breast Cancer
- Interventions
- Sacituzumab Govitecan, Pembrolizumab
- Drug
- Lead sponsor
- Massachusetts General Hospital
- Other
- Eligibility
- 18 Years and older
- Enrollment
- 239 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2020 – 2029
- U.S. locations
- 5
- States / cities
- Boston, Massachusetts • Danvers, Massachusetts • Newton, Massachusetts
- Conditions
- Breast Cancer, Breast Cancer Recurrent
- Interventions
- rPBI
- Radiation
- Lead sponsor
- University Health Network, Toronto
- Other
- Eligibility
- 18 Years to 99 Years · Female only
- Enrollment
- 171 participants
- Healthy volunteers
- Healthy volunteers not accepted
- Timeline
- 2023 – 2027
- U.S. locations
- 3
- States / cities
- New York, New York • Richmond, Virginia
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.