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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 15, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 15, 2026, 6:57 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
1131
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.

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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 145–156 of 1,131 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
Anatomic Stage IV Breast Cancer AJCC v8, Metastatic Breast Carcinoma, Metastatic HER2-Negative Breast Carcinoma, Metastatic Hormone Receptor-Positive Breast Carcinoma, Recurrent Breast Carcinoma
Interventions
Abemaciclib, Biopsy Procedure, Biospecimen Collection, Copanlisib Hydrochloride, Diagnostic Imaging Testing, Echocardiography Test, Fulvestrant, Multigated Acquisition Scan
Drug · Procedure
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
24 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
14
States / cities
Birmingham, Alabama • Costa Mesa, California • Orange, California + 8 more
Conditions
Melanoma (Skin Cancer), HER2-low Hormone Receptor Positive Breast Cancer
Interventions
AMXT 1501 Dicaprate, DFMO, Fulvestrant, Capivasertib, Pembrolizumab
Drug
Lead sponsor
Aminex Therapeutics, Inc.
Industry
Eligibility
18 Years and older
Enrollment
92 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
20
States / cities
Tucson, Arizona • La Jolla, California • Los Angeles, California + 15 more
Conditions
Estrogen-receptor-positive Breast Cancer, HER2/Neu-Negative Breast Cancer, Advanced Breast Cancerv, Metastatic Breast Cancer
Interventions
elacestrant, palbociclib, abemaciclib, ribociclib
Drug
Lead sponsor
Northwestern University
Other
Eligibility
18 Years and older
Enrollment
174 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
3
States / cities
Chicago, Illinois
Conditions
Advanced Breast Carcinoma, Advanced Colon Carcinoma, Advanced Colorectal Carcinoma, Advanced Endometrial Carcinoma, Advanced Gastric Carcinoma, Advanced Gastroesophageal Junction Adenocarcinoma, Advanced Malignant Solid Neoplasm, Advanced Salivary Gland Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Clinical Stage III Gastric Cancer AJCC v8, Clinical Stage III Gastroesophageal Junction Adenocarcinoma AJCC v8, Clinical Stage IV Gastric Cancer AJCC v8, Clinical Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8, HER2-Positive Breast Carcinoma, Malignant Hepatobiliary Neoplasm, Metastatic Breast Carcinoma, Metastatic Colon Carcinoma, Metastatic Colorectal Carcinoma, Metastatic Endometrial Carcinoma, Metastatic Gastric Carcinoma, Metastatic Gastroesophageal Junction Adenocarcinoma, Metastatic Malignant Solid Neoplasm, Metastatic Salivary Gland Carcinoma, Stage III Colon Cancer AJCC v8, Stage III Colorectal Cancer AJCC v8, Stage III Major Salivary Gland Cancer AJCC v8, Stage III Uterine Corpus Carcinoma or Carcinosarcoma AJCC v8, Stage IV Colon Cancer AJCC v8, Stage IV Colorectal Cancer AJCC v8, Stage IV Major Salivary Gland Cancer AJCC v8, Stage IV Uterine Corpus Carcinoma or Carcinosarcoma AJCC v8, Unresectable Breast Carcinoma, Unresectable Colon Carcinoma, Unresectable Colorectal Carcinoma, Unresectable Endometrial Carcinoma, Unresectable Gastric Carcinoma, Unresectable Gastroesophageal Junction Adenocarcinoma, Unresectable Malignant Solid Neoplasm, Unresectable Salivary Gland Carcinoma
Interventions
Biopsy Procedure, Biospecimen Collection, Ceralasertib, Computed Tomography, Echocardiography Test, Multigated Acquisition Scan, Positron Emission Tomography, Trastuzumab Deruxtecan
Procedure · Drug · Biological
Lead sponsor
National Cancer Institute (NCI)
NIH
Eligibility
18 Years and older
Enrollment
51 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
23
States / cities
Irvine, California • Los Angeles, California • Orange, California + 16 more
Conditions
Breast Screening
Interventions
Digital Mammography, Digital Tomosynthesis Mammography, Laboratory Biomarker Analysis
Procedure · Other
Lead sponsor
ECOG-ACRIN Cancer Research Group
Network
Eligibility
45 Years to 74 Years · Female only
Enrollment
108,508 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2029
U.S. locations
133
States / cities
Birmingham, Alabama • Mobile, Alabama • Phoenix, Arizona + 107 more
Conditions
Advanced Solid Tumor, Adult, ERBB2 Altered Breast Cancer, ERBB2 Gene Amplification, HER2 Overexpression, Non-Small Cell Lung Cancer, HER2
Interventions
CGT4255
Drug
Lead sponsor
Cogent Biosciences, Inc.
Industry
Eligibility
18 Years and older
Enrollment
100 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2028
U.S. locations
15
States / cities
Scottsdale, Arizona • New Haven, Connecticut • Jacksonville, Florida + 11 more
Conditions
Node Positive HER2 Negative Breast Cancer
Interventions
Placebo, Aspirin
Other · Drug
Lead sponsor
Alliance for Clinical Trials in Oncology
Other
Eligibility
18 Years to 69 Years
Enrollment
3,021 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2023
U.S. locations
1426
States / cities
Birmingham, Alabama • Daphne, Alabama • Mobile, Alabama + 902 more
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
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
Breast Cancer, HER2-positive Breast Cancer, ER Positive Breast Cancer, PR-Positive Breast Cancer
Interventions
Neratinib, Letrozole (L) or Anastrozole (A), Trastuzumab
Drug
Lead sponsor
Ruth O'Regan
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
4
States / cities
Chicago, Illinois • Rochester, New York • Hershey, Pennsylvania + 1 more
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
Breast Cancer, TNBC - Triple-Negative Breast Cancer, HR Positive/HER-2 Negative Breast Cancer, HER2 + Breast Cancer, Early Stage Breast Cancer
Interventions
There are no interventions in this observational study.
Other
Lead sponsor
Tempus AI
Industry
Eligibility
18 Years to 99 Years
Enrollment
900 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2033
U.S. locations
16
States / cities
Birmingham, Alabama • Whittier, California • Weston, Florida + 13 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.