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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 November 15, 2026 Report an issue

ClinicalTrials.gov public records Last synced Nov 15, 2026, 6:35 AM EST

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.

Official matching trials
7089
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 805–816 of 7,089 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
Breast Cancer, Early-stage Breast Cancer, Ductal Carcinoma in Situ, DCIS
Interventions
Breast Radiotherapy
Radiation
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
50 Years and older · Female only
Enrollment
90 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Conditions
Breast Cancer Metastatic
Interventions
Trastuzumab Deruxtecan
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
40 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
3
States / cities
New Haven, Connecticut • Atlanta, Georgia • Rochester, New York
Conditions
Breast Carcinoma, Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Breast Cancer
Interventions
Biospecimen Collection, Surveys, Stereotactic Body Radiation Therapy (SBRT), Computed Tomography, Magnetic Resonance Imaging, Positron Emission Tomography
Procedure · Other · Radiation
Lead sponsor
Mayo Clinic
Other
Eligibility
18 Years and older · Female only
Enrollment
45 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2031
U.S. locations
2
States / cities
Scottsdale, Arizona • Rochester, Minnesota
Conditions
Communication, Message Perception, Alcohol, Cancer Prevention, Behavior, Risk
Interventions
Risk Message, Efficacy Message, Industry Deception, YAW Susceptibility, Mechanisms
Behavioral
Lead sponsor
Ohio State University Comprehensive Cancer Center
Other
Eligibility
18 Years to 25 Years · Female only
Enrollment
900 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2026 – 2028
U.S. locations
1
States / cities
Columbus, Ohio
Conditions
Breast Cancer
Interventions
Atezolizumab, Trastuzumab Emtansine, Placebo, Trastuzumab
Drug
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
1,188 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2034
U.S. locations
22
States / cities
Birmingham, Alabama • Buena, California • Santa Monica, California + 19 more
Conditions
Metastatic Breast Cancer, Triple Negative Breast Cancer, Estrogen-receptor-low Breast Cancer, ER Positive, HER2 Negative Breast Cancer
Interventions
SOC Chemotherapy, Tocilizumab/Tocilizumab Biosimilar
Drug
Lead sponsor
Kathy Miller
Other
Eligibility
18 Years and older
Enrollment
168 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2027
U.S. locations
7
States / cities
Atlanta, Georgia • Carmel, Indiana • Indianapolis, Indiana + 3 more
Conditions
Advanced Cancer
Interventions
FLX475 (tivumecirnon), pembrolizumab (KEYTRUDA®)
Drug
Lead sponsor
RAPT Therapeutics, Inc., a member of the GSK plc group of companies
Industry
Eligibility
18 Years and older
Enrollment
323 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2024
U.S. locations
19
States / cities
Gilbert, Arizona • Duarte, California • Los Angeles, California + 16 more
Conditions
Solid Tumor, Adult, Advanced Solid Tumor, Head and Neck Cancer, Breast Cancer, Colon Cancer, Pancreatic Cancer, Gastric Cancer, Esophageal Cancer, Prostate Cancer, Uterine Cancer, Cervix Cancer, Ovarian Cancer, Kidney Cancer, Bladder Cancer, Thyroid Cancer, Melanoma, Sarcoma, Advanced Cancer, Metastatic Cancer, Refractory Cancer, Non Small Cell Lung Cancer, Merkel Cell Carcinoma
Interventions
SNS-101 (anti-VISTA), Cemiplimab
Drug
Lead sponsor
Sensei Biotherapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
98 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2026
U.S. locations
10
States / cities
Los Angeles, California • Aurora, Colorado • Louisville, Kentucky + 7 more
Conditions
Anatomic Stage 0 Breast Cancer AJCC v8, Anatomic Stage 1 Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Estrogen Receptor-Positive Breast Carcinoma, HER2-Negative Breast Carcinoma, Breast Ductal Carcinoma In Situ, Breast Lobular Carcinoma In Situ
Interventions
Anastrozole, Letrozole, Exemestane, Tamoxifen, Mammogram, Magnetic Resonance Imaging, Dual X-ray Absorptiometry, Biospecimen Collection, Questionnaire Administration
Drug · Procedure · Biological + 1 more
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years and older
Enrollment
1,556 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
728
States / cities
Anchorage, Alaska • Gilbert, Arizona • Goodyear, Arizona + 559 more
Conditions
Breast Cancer
Interventions
ARV-471, Abemaciclib
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
37 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
23
States / cities
Palo Alto, California • San Francisco, California • Tampa, Florida + 11 more
Conditions
Advanced Cancers (Breast, Ovarian, mCRPC, Pancreatic Ductal Adenocarcinoma (PDAC), Brain Mets) With Specific Mutations (Homologous Recombination Deficiency)
Interventions
DSB2455
Drug
Lead sponsor
Duke Street Bio Ltd
Industry
Eligibility
18 Years and older
Enrollment
180 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2028
U.S. locations
4
States / cities
Sacramento, California • New Haven, Connecticut • New York, New York + 1 more
Conditions
Breast Cancer
Interventions
Ultrahypofractionated Radiation, Moderately Hypofractionated Radiation
Radiation
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
768 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2031
U.S. locations
5
States / cities
Loveland, Colorado • Jacksonville, Florida • Voorhees Township, New Jersey + 2 more

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.