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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 14, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 14, 2026, 12:52 PM 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
678
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 73–84 of 678 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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Recruiting Phase 2 Interventional

Circulating Tumor DNA

NCT06923527
Conditions
ER+ Breast Cancer
Interventions
Elacestrant
Drug
Lead sponsor
Yale University
Other
Eligibility
18 Years and older
Enrollment
50 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2027
U.S. locations
7
States / cities
New Haven, Connecticut • Washington D.C., District of Columbia • Baltimore, Maryland + 4 more
Conditions
Breast Cancer, Metastatic Breast Cancer, Triple Negative Breast Cancer, Estrogen-receptor-positive Breast Cancer, Hormone Receptor Negative Breast Carcinoma
Interventions
SERD* + abemaciclib, SERD* + everolimus, SERD* + everolimus or capecitabine, SOC, Antiandrogen
Drug
Lead sponsor
UNC Lineberger Comprehensive Cancer Center
Other
Eligibility
18 Years and older
Enrollment
700 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2031
U.S. locations
6
States / cities
New Haven, Connecticut • Baltimore, Maryland • Rochester, Minnesota + 3 more
Conditions
Breast Cancer
Interventions
LEE011, Letrozole, BYL719
Drug
Lead sponsor
Novartis Pharmaceuticals
Industry
Eligibility
18 Years to 100 Years · Female only
Enrollment
259 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2027
U.S. locations
10
States / cities
San Diego, California • San Francisco, California • Tampa, Florida + 5 more
Conditions
Urothelial Carcinoma Bladder, Triple Negative Breast Cancer (TNBC), Hormone Receptor Positive Breast Adenocarcinoma, Non Small Cell Lung Cancer, Cervical Adenocarcinoma, Colorectal Adenocarcinoma, Head and Neck Cancer
Interventions
[225Ac]Ac-AKY-1189 (therapeutic), [64Cu]Cu-AKY-1189 (imaging)
Drug
Lead sponsor
Aktis Oncology, Inc.
Industry
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2032
U.S. locations
14
States / cities
Duarte, California • Irvine, California • Miami, Florida + 10 more
Conditions
Locally Advanced Breast Cancer, Unresectable Breast Carcinoma, Metastatic Breast Cancer
Interventions
BNT323, BNT327
Drug
Lead sponsor
BioNTech SE
Industry
Eligibility
18 Years and older
Enrollment
380 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2025 – 2029
U.S. locations
27
States / cities
Beverly Hills, California • Newport Beach, California • Port Saint Lucie, Florida + 18 more
Conditions
Triple Negative Breast Cancer, HER2-positive Breast Cancer, Hormone Receptor-positive Breast Cancer
Interventions
Magnetic Resonance Imaging
Diagnostic Test
Lead sponsor
H. Lee Moffitt Cancer Center and Research Institute
Other
Eligibility
18 Years and older
Enrollment
170 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2027
U.S. locations
2
States / cities
Clearwater, Florida • Tampa, Florida
Conditions
Anatomic Stage IV Breast Cancer AJCC v8, Hormone Receptor Positive Breast Carcinoma, Metastatic Breast Carcinoma, Prognostic Stage IV Breast Cancer AJCC v8
Interventions
Computed Tomography, Fludeoxyglucose F-18, Positron Emission Tomography
Procedure · Other
Lead sponsor
ECOG-ACRIN Cancer Research Group
Network
Eligibility
18 Years and older
Enrollment
138 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2027
U.S. locations
98
States / cities
Birmingham, Alabama • Phoenix, Arizona • Los Angeles, California + 75 more
Conditions
Breast Cancer, Solid Tumors
Interventions
PF-07220060 + PF-07104091 combination dose escalation, PF-07104091 + PF-07220060 + fulvestrant dose expansion, PF-07104091 + PF-07220060 + letrozole dose expansion
Drug
Lead sponsor
Pfizer
Industry
Eligibility
18 Years and older
Enrollment
235 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2027
U.S. locations
12
States / cities
Los Angeles, California • Santa Monica, California • Boston, Massachusetts + 5 more
Conditions
Bladder Carcinoma, Ureter Carcinoma, Renal Pelvis Carcinoma, Non-small Cell Lung Cancer, Invasive Breast Carcinoma, Cutaneous Melanoma, Esophageal Carcinoma, Gastroesophageal Junction Carcinoma, Gastric Adenocarcinoma, Pancreatic Adenocarcinoma, Squamous Cell Carcinoma of the Head and Neck, Epithelial Ovarian Carcinoma, Fallopian Tube Carcinoma, Endometrial Carcinoma, Renal Cell Carcinoma, Rectal Adenocarcinoma, Colon Adenocarcinoma
Interventions
Guardant Reveal
Diagnostic Test
Lead sponsor
Guardant Health, Inc.
Industry
Eligibility
18 Years and older
Enrollment
2,285 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2021 – 2030
U.S. locations
33
States / cities
Birmingham, Alabama • Chandler, Arizona • Hot Springs, Arkansas + 30 more
Conditions
Estrogen Receptor-Positive, HER2-Negative Advanced Breast Cancer
Interventions
Giredestrant, Fulvestrant, Abemaciclib, Palbociclib, Ribociclib, LHRH Agonist, FoundationOne Liquid CDx Assay (F1LCDx)
Drug · Diagnostic Test
Lead sponsor
Hoffmann-La Roche
Industry
Eligibility
18 Years and older
Enrollment
1,050 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2023 – 2029
U.S. locations
40
States / cities
Daphne, Alabama • Greenbrae, California • Harbor City, California + 34 more
Conditions
Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage IIA Breast Cancer AJCC v8, Anatomic Stage IIB Breast Cancer AJCC v8, Anatomic Stage IIIA Breast Cancer AJCC v8, Invasive Breast Carcinoma, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage IIA Breast Cancer AJCC v8, Prognostic Stage IIB Breast Cancer AJCC v8, Prognostic Stage IIIA Breast Cancer AJCC v8
Interventions
Docetaxel, Lumpectomy, Mastectomy, Nab-paclitaxel, Paclitaxel, Pertuzumab, Radiation Therapy, Trastuzumab, Trastuzumab Emtansine
Drug · Procedure · Biological + 1 more
Lead sponsor
ECOG-ACRIN Cancer Research Group
Network
Eligibility
18 Years and older
Enrollment
2,175 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2038
U.S. locations
999
States / cities
Birmingham, Alabama • Anchorage, Alaska • Fairbanks, Alaska + 674 more
Conditions
Estrogen Receptor Positive, HER2/Neu Negative, Invasive Breast Carcinoma, Progesterone Receptor Positive
Interventions
Radiation Therapy, Therapeutic Conventional Surgery
Radiation · Procedure
Lead sponsor
M.D. Anderson Cancer Center
Other
Eligibility
18 Years and older
Enrollment
25 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2027
U.S. locations
1
States / cities
Houston, 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.