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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, 7:24 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 877–888 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
Stage IV Melanoma, Advanced Lung Cancer, Stage IV Non-Small Cell Lung Cancer, Unresectable Non-Small Cell Lung Carcinoma, Unresectable Stage III Non-Small Cell Lung Cancer, Small Cell Lung Cancer Extensive Stage, Stage IV Merkel Cell Carcinoma, Stage IV Cutaneous Squamous Cell Carcinoma, Stage IV Basal Cell Carcinoma, Stage IV Breast Cancer, Stage IV Colorectal Cancer, Stage IV Gastric Cancer, Stage IV Esophageal Cancer, Stage IV Hepatocellular Cancer, Stage IV Renal Cell Carcinoma, Stage IV Bladder Cancer, Stage IV Head and Neck Squamous Cell Carcinoma, Stage IV Cervical Cancer, Stage IV Endometrial Cancer, Stage IV Mesothelioma, Immunotherapy, Immune Checkpoint Inhibitors
Interventions
Educational Video and QPL List, Usual Care
Other
Lead sponsor
Massachusetts General Hospital
Other
Eligibility
18 Years and older
Enrollment
199 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2021 – 2024
U.S. locations
1
States / cities
Boston, Massachusetts
Conditions
Breast Cancer
Interventions
Transcutaneous vagus nerve and acupuncture point stimulation
Device
Lead sponsor
The Healing Consciousness Foundation
Other
Eligibility
18 Years to 75 Years
Enrollment
46 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2026
U.S. locations
1
States / cities
Meadowbrook, Pennsylvania
Conditions
Breast Cancer, Quality of Life, Breast Cancer, Metastatic, Breast Cancer, Metastatic Breast Cancer, Leptomeningeal Metastasis of Breast Cancer, Brain Metastases From Breast Cancer
Interventions
Health-Related Quality of Life (QOL) questionnaires, Medical Chart Review
Other
Lead sponsor
University of California, San Francisco
Other
Eligibility
18 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2035
U.S. locations
1
States / cities
San Francisco, California
Conditions
Breast Cancer
Interventions
Dato-DXd, Capecitabine, Gemcitabine, Eribulin, Vinorelbine
Drug
Lead sponsor
AstraZeneca
Industry
Eligibility
18 Years and older
Enrollment
732 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2026
U.S. locations
14
States / cities
Duarte, California • Los Angeles, California • Palo Alto, California + 10 more
Conditions
Early-stage Breast Cancer, Hypoactive Sexual Desire Disorder, Hormone Receptor Positive Breast Carcinoma, Breast Cancer
Interventions
Aromatase Inhibitors, Bupropion, GnRH agonist
Drug
Lead sponsor
University of Illinois Chicago
Other
Eligibility
18 Years and older · Female only
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
1
States / cities
Chicago, Illinois
Recruiting Phase 2 Interventional

ETHAN - ET for Male BC

NCT05501704
Conditions
Male Breast Cancer, Hormone Receptor-positive Breast Cancer, Hormone Receptor Negative Breast Carcinoma
Interventions
Tamoxifen, Anastrozole, Degarelix, Abemaciclib
Drug
Lead sponsor
Jose Pablo Leone
Other
Eligibility
18 Years and older · Male only
Enrollment
60 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2036
U.S. locations
9
States / cities
Washington D.C., District of Columbia • Jacksonville, Florida • Boston, Massachusetts + 6 more
Conditions
Locally Advanced Malignant Solid Neoplasm, Metastatic Malignant Solid Neoplasm, Unresectable Malignant Solid Neoplasm
Interventions
Biopsy Procedure, Biospecimen Collection, Computed Tomography, Ipatasertib, Magnetic Resonance Imaging, Paclitaxel
Procedure · Drug
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
33 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2027
U.S. locations
207
States / cities
Birmingham, Alabama • Mobile, Alabama • Anchorage, Alaska + 167 more
Conditions
Breast Cancer, HER2-positive
Interventions
Zanidatamab, Letrozole, Tamoxifen
Drug
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older · Female only
Enrollment
20 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2028
U.S. locations
1
States / cities
Houston, Texas
Conditions
Breast Carcinoma, Colon Carcinoma, Esophageal Carcinoma, Gastric Carcinoma, Head and Neck Carcinoma, Kidney Carcinoma, Lung Carcinoma, Ovarian Carcinoma, Pancreatic Carcinoma, Solid Neoplasm, Uterine Corpus Cancer
Interventions
Computed Tomography, Gallium Ga 68 FAPi-46, Gallium Ga 68-labeled PSMA-11, Positron Emission Tomography, 18F-FDG
Procedure · Radiation
Lead sponsor
Jonsson Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
29 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2019 – 2031
U.S. locations
1
States / cities
Los Angeles, California
Conditions
Breast Cancer, Lung Cancer, Genito-Urinary Cancer, Colorectal Cancer, Gastric Cancer, Pancreatic Cancer, Liver Cancer, Head and Neck Cancer, Melanoma
Interventions
Hello for Cancer game, Table Topics game
Behavioral · Other
Lead sponsor
Milton S. Hershey Medical Center
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2024 – 2025
U.S. locations
1
States / cities
Hershey, Pennsylvania
Conditions
HER2-negative Breast Cancer Patients With Brain Metastases
Interventions
Utidelone, Utidelone in combination with capecitabine
Drug
Lead sponsor
Biostar Pharma, Inc.
Industry
Eligibility
18 Years and older
Enrollment
120 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
12
States / cities
Duarte, California • Los Angeles, California • San Diego, California + 9 more
Conditions
Breast Cancer
Interventions
GDC-0587, Giredestrant, Omeprazole
Drug
Lead sponsor
Genentech, Inc.
Industry
Eligibility
18 Years and older
Enrollment
3 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026
U.S. locations
2
States / cities
Grand Rapids, Michigan • San Antonio, Texas

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.