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 October 13, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 13, 2026, 5:08 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

1130

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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

triple-negative HER2-positive hormone receptor-positive metastatic breast cancer

These describe how studies tend to be titled and grouped on ClinicalTrials.gov — they are search vocabulary, not medical guidance.

Showing 49–60 of 1,130 matching trials for Breast Cancer.

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Conditions: HER-2 Positive Breast Cancer, Breast Cancer, Stage II Breast Cancer, Stage III Breast Cancer
Interventions: T-DM1, Pertuzumab, Excision of tumor/mastectomy; Drug · Procedure
Lead sponsor: Dana-Farber Cancer Institute; Other
Eligibility: 18 Years and older
Enrollment: 164 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2015 – 2028
U.S. locations: 4
States / cities: Boston, Massachusetts • Nashville, Tennessee

Conditions: Breast Cancer
Interventions: Dato-DXd; Drug
Lead sponsor: AstraZeneca; Industry
Eligibility: 18 Years and older
Enrollment: 100 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2028
U.S. locations: 6
States / cities: Largo, Florida • Fort Wayne, Indiana • Omaha, Nebraska + 3 more

Conditions: Advanced Solid Tumor, Advanced Malignant Neoplasm, Metastatic Cancer, Metastatic Solid Tumor, Lung Cancer, Ovarian Cancer, Endometrial Cancer, Prostate Cancer, Colorectal Cancer, Breast Cancer, Other Cancer, Locally Advanced, Head and Neck Cancer, Gall Bladder Cancer, Small Cell Lung Cancer, Small Cell Lung Cancer ( SCLC ), Small Cell Lung Carcinoma, NSCLC, NSCLC (Non-small Cell Lung Cancer), SCLC, Non-Small Cell Lung Carcinoma, Triple Negative Breast Cancer, TNBC, HER2+ Breast Cancer, Non-Small Cell Lung Cancer, ER/PR Positive Breast Cancer, HER2- Breast Cancer, HER2-positive Breast Cancer, HER2-negative Breast Cancer, ER/PR(+), Her2(-) Breast Cancer
Interventions: rezatapopt, pembrolizumab; Drug
Lead sponsor: PMV Pharmaceuticals, Inc; Industry
Eligibility: 12 Years and older
Enrollment: 300 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2027
U.S. locations: 32
States / cities: Irvine, California • La Jolla, California • Los Angeles, California + 26 more

Conditions: Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Early Stage HER2+ Breast Cancer
Interventions: Trastuzumab (Herceptin), Pertuzumab, Echocardiography, Multigated Acquisition Scan, Mammography, Ultrasound, Magnetic Resonance Imaging, Biospecimen Collection, Questionnaire Administration; Biological · Procedure · Other
Lead sponsor: Alliance for Clinical Trials in Oncology; Other
Eligibility: 18 Years and older
Enrollment: 1,524 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2037
U.S. locations: 698
States / cities: Phoenix, Arizona • Fort Smith, Arkansas • Jonesboro, Arkansas + 537 more

Conditions: Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Breast Adenocarcinoma, HER2/Neu Negative, Locally Advanced Breast Carcinoma, Metastatic Breast Carcinoma, Recurrent Breast Carcinoma
Interventions: Biospecimen Collection, Computed Tomography, Entinostat, Exemestane, Goserelin, Goserelin Acetate, Magnetic Resonance Imaging, Placebo Administration, Quality-of-Life Assessment; Procedure · Drug · Other
Lead sponsor: National Cancer Institute (NCI); NIH
Eligibility: 18 Years and older
Enrollment: 608 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2014 – 2027
U.S. locations: 652
States / cities: Birmingham, Alabama • Jonesboro, Arkansas • Carmichael, California + 460 more

Conditions: HER2-positive Breast Cancer, Breast Cancer
Interventions: Zanidatamab, Paclitaxel, Docetaxel, Carboplatin, Trastuzumab, Pertuzumab; Drug
Lead sponsor: Jazz Pharmaceuticals; Industry
Eligibility: 18 Years and older
Enrollment: 125 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2030
U.S. locations: 29
States / cities: Long Beach, California • Los Alamitos, California • Denver, Colorado + 25 more

Conditions: Breast Adenocarcinoma, Hormone Receptor Positive, Stage IA Breast Cancer AJCC v7, Stage IB Breast Cancer AJCC v7, Stage IIA Breast Cancer AJCC v6 and v7, Stage IIB Breast Cancer AJCC v6 and v7, Stage IIIB Breast Cancer AJCC v7
Interventions: Anastrozole, Exemestane, Laboratory Biomarker Analysis, Letrozole, Quality-of-Life Assessment, Radiation Therapy, Tamoxifen Citrate; Drug · Other · Radiation
Lead sponsor: National Cancer Institute (NCI); NIH
Eligibility: 18 Years to 75 Years · Female only
Enrollment: 10,273 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2006 – 2030
U.S. locations: 1160
States / cities: Anniston, Alabama • Birmingham, Alabama • Mobile, Alabama + 723 more

Conditions: Hormone Receptor Positive HER-2 Negative Breast Cancer, Metastatic Breast Cancer, Recurrent Breast Cancer
Interventions: Alisertib, Endocrine therapy; Drug
Lead sponsor: Puma Biotechnology, Inc.; Industry
Eligibility: 18 Years and older
Enrollment: 225 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2029
U.S. locations: 35
States / cities: Birmingham, Alabama • Phoenix, Arizona • Beverly Hills, California + 28 more

Conditions: Breast Ductal Carcinoma In Situ, Invasive Breast Carcinoma, Multicentric Breast Carcinoma, Multifocal Breast Carcinoma, Synchronous Bilateral Breast Carcinoma
Interventions: Anastrozole, Exemestane, Laboratory Biomarker Analysis, Letrozole, Quality-of-Life Assessment, Systemic Chemotherapy, Tamoxifen Citrate; Drug · Other
Lead sponsor: National Cancer Institute (NCI); NIH
Eligibility: 18 Years and older · Female only
Enrollment: 5,018 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2011 – 2027
U.S. locations: 1435
States / cities: Anniston, Alabama • Birmingham, Alabama • Mobile, Alabama + 881 more

Conditions: Breast Cancer, HER2-positive Breast Cancer, Brain Metastases, Cancer, Cancer Metastatic
Interventions: Trastuzumab Deruxtecan, Stereotactic Radiosurgery; Drug · Radiation
Lead sponsor: Baptist Health South Florida; Other
Eligibility: 18 Years and older · Female only
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2027 – 2030
U.S. locations: 1
States / cities: Miami, 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: Abemaciclib, Questionnaire Administration; Drug · Other
Lead sponsor: City of Hope Medical Center; Other
Eligibility: 70 Years and older
Enrollment: 43 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2027
U.S. locations: 6
States / cities: Duarte, California • Irvine, California • Long Beach, California + 3 more

Conditions: Anatomic Stage I Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage III Breast Cancer AJCC v8, HER2 Negative Breast Carcinoma, Hormone Receptor Positive Breast Carcinoma, Invasive Breast Carcinoma, Prognostic Stage I Breast Cancer AJCC v8, Prognostic Stage II Breast Cancer AJCC v8, Prognostic Stage III Breast Cancer AJCC v8
Interventions: Educational Intervention, Text Message-based Navigation Intervention, Motivational Interviewing, Best Practice, Questionnaire Administration, Quality-of-Life Assessment; Other · Behavioral
Lead sponsor: Alliance for Clinical Trials in Oncology; Other
Eligibility: 18 Years and older · Female only
Enrollment: 1,167 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2026
U.S. locations: 526
States / cities: Birmingham, Alabama • Fairbanks, Alaska • Gilbert, Arizona + 406 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.

Breast Cancer clinical trials

How Breast Cancer studies are organized in the registry

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Live official records

T-DM1+Pertuzumab in Pre-OP Early-Stage HER2+ BRCA

A Study of Dato-DXd in Inoperable or Metastatic Hormone Receptor-positive, HER2 IHC 0 Breast Cancer

The Evaluation of PC14586 in Patients With Advanced Solid Tumors Harboring a TP53 Y220C Mutation (PYNNACLE)

ShortStop-HER2: 12 Months vs. 6 Months of HER2-targeted Medications for People With HER2+ Breast Cancer Who Had a Pathologic Complete Response After Chemotherapy Plus Trastuzumab

Exemestane With or Without Entinostat in Treating Patients With Recurrent Hormone Receptor-Positive Breast Cancer That is Locally Advanced or Metastatic

A Phase 2 Neoadjuvant Study of Zanidatamab in Combination With Chemotherapy in Participants With HER2-positive Breast Cancer

Hormone Therapy With or Without Combination Chemotherapy in Treating Women Who Have Undergone Surgery for Node-Negative Breast Cancer (The TAILORx Trial)

A Study of Alisertib in Combination With Endocrine Therapy in Patients With HR-positive, HER2-negative Recurrent or Metastatic Breast Cancer

Tamoxifen Citrate, Letrozole, Anastrozole, or Exemestane With or Without Chemotherapy in Treating Patients With Invasive RxPONDER Breast Cancer

Trastuzumab Deruxtecan + Stereotactic Radiosurgery (SRS) in HER2+ Breast Cancer Brain Metastases

Abemaciclib and Endocrine Therapy in Older Patients With Breast Cancer.

Additional Support Program Via Text Messaging and Telephone-Based Counseling for Breast Cancer Patients Receiving Hormonal Therapy

About this Breast Cancer clinical trials directory page