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 8, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 8, 2026, 12:49 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

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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 13–24 of 676 matching trials for Breast Cancer.

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Conditions: Breast Cancer
Interventions: Inavolisib, Placebo, CDK4/6i, Letrozole; Drug
Lead sponsor: Hoffmann-La Roche; Industry
Eligibility: 18 Years and older
Enrollment: 450 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2032
U.S. locations: 62
States / cities: Goodyear, Arizona • Phoenix, Arizona • Burbank, California + 50 more

Conditions: Breast Neoplasms
Interventions: Patritumab deruxtecan, Paclitaxel, Nab-paclitaxel, Capecitabine, Pegylated liposomal doxorubicin, Trastuzumab deruxtecan, Rescue Medication; Biological · Drug
Lead sponsor: Merck Sharp & Dohme LLC; Industry
Eligibility: 18 Years and older
Enrollment: 1,000 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2033
U.S. locations: 34
States / cities: Daphne, Alabama • Tucson, Arizona • Los Angeles, California + 27 more

Conditions: Breast Neoplasm, Neoplasm Metastasis
Interventions: Abemaciclib, Fulvestrant, Placebo; Drug
Lead sponsor: Eli Lilly and Company; Industry
Eligibility: 18 Years and older
Enrollment: 368 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2027
U.S. locations: 60
States / cities: Phoenix, Arizona • Springdale, Arkansas • Fullerton, California + 52 more

Conditions: Breast Cancer
Interventions: Inavolisib, Ribociclib, Fulvestrant, Placebo; Drug
Lead sponsor: Hoffmann-La Roche; Industry
Eligibility: 18 Years and older
Enrollment: 80 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2030
U.S. locations: 10
States / cities: Anaheim, California • Palo Alto, California • Jacksonville, Florida + 7 more

Conditions: HER2-positive Breast Cancer, Invasive Carcinoma of the Breast, Breast Cancer, Node Negative Breast Cancer, Micrometastasis Breast Cancer, Hormone Receptor Positive Breast Cancer
Interventions: Pertuzumab+TRASTUZUMAB, ADJUVANT ENDOCRINE THERAPY; Combination Product · Drug
Lead sponsor: Dana-Farber Cancer Institute; Other
Eligibility: 18 Years and older
Enrollment: 393 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2032
U.S. locations: 32
States / cities: Stamford, Connecticut • Miami, Florida • Atlanta, Georgia + 20 more

Conditions: Metastatic Breast Cancer, HER2-negative Breast Cancer, ER+ Breast Cancer, Advanced Breast Cancer, Metastatic Breast Cancer With Bone Involvement, Bone Metastases in Subjects With Advanced Breast Cancer, ER-Positive HER2-Negative Breast Cancer, Estrogen Receptor-positive Breast Cancer, Hormone-sensitive Metastatic Breast Cancer, Hormone-Sensitive Breast Cancer
Interventions: RYZ101, Standard of Care Endocrine Therapy; Drug
Lead sponsor: RayzeBio, Inc.; Industry
Eligibility: Not listed
Enrollment: 64 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2033
U.S. locations: 25
States / cities: Phoenix, Arizona • Irvine, California • San Diego, California + 21 more

Conditions: Vulvar Adenocarcinoma, PDAC - Pancreatic Ductal Adenocarcinoma, Gastric Adenocarcinoma, GEJ Adenocarcinoma, Cervical Adenocarcinoma, Cervical Adenosquamous Carcinoma, Small Cell Carcinoma of Lung, Colorectal Cancer, Hormone Receptor Positive Breast Carcinoma
Interventions: AVA6103; Drug
Lead sponsor: Avacta Life Sciences Ltd; Industry
Eligibility: 18 Years and older
Enrollment: 174 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2030
U.S. locations: 7
States / cities: Scottsdale, Arizona • Sarasota, Florida • Chicago, Illinois + 4 more

Conditions: Advanced HR+/HER2- Breast Cancer
Interventions: IEV407, Fulvestrant, Letrozole; Drug
Lead sponsor: Novartis Pharmaceuticals; Industry
Eligibility: 18 Years and older
Enrollment: 194 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2032
U.S. locations: 2
States / cities: New Haven, Connecticut • Dallas, Texas

Conditions: PIK3CA Mutation, HER2- Negative Breast Cancer, Hormone Receptor Positive Tumor, Breast Cancer, Metastatic Breast Cancer, Advanced Breast Cancer
Interventions: Zovegalisib, Capivasertib, Fulvestrant; Drug
Lead sponsor: Relay Therapeutics, Inc.; Industry
Eligibility: 18 Years and older
Enrollment: 540 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2031
U.S. locations: 52
States / cities: Gilbert, Arizona • Beverly Hills, California • Duarte, California + 42 more

Conditions: Acute Myeloid Leukemia, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage IV Breast Cancer AJCC v8, Clinical Stage IV Esophageal Adenocarcinoma AJCC v8, Clinical Stage IV Gastric Cancer AJCC v8, Clinical Stage IV Gastroesophageal Junction Adenocarcinoma AJCC v8, Esophageal Carcinoma, Fallopian Tube Carcinoma, Gastric Carcinoma, Hormone Receptor-Positive Breast Carcinoma, Invasive Breast Carcinoma, Lung Non-Small Cell Carcinoma, Lung Small Cell Carcinoma, Malignant Solid Neoplasm, Melanoma, Metastatic Prostate Carcinoma, Multiple Myeloma, Ovarian Carcinoma, Ovarian High Grade Serous Adenocarcinoma, Primary Peritoneal Carcinoma, Stage III Fallopian Tube Cancer AJCC v8, Stage III Lung Cancer AJCC v8, Stage III Ovarian Cancer AJCC v8, Stage IV Colorectal Cancer AJCC v8, Stage IV Fallopian Tube Cancer AJCC v8, Stage IV Lung Cancer AJCC v8, Stage IV Ovarian Cancer AJCC v8, Stage IVB Prostate Cancer AJCC v8, Triple-Negative Breast Carcinoma
Interventions: Biospecimen Collection, Computed Tomography, Magnetic Resonance Imaging, Medical Chart Review, Paracentesis, Positron Emission Tomography; Procedure · Other
Lead sponsor: National Cancer Institute (NCI); NIH
Eligibility: 13 Years and older
Enrollment: 1,600 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2027
U.S. locations: 147
States / cities: Daphne, Alabama • Fairhope, Alabama • Mobile, Alabama + 115 more

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: Locally Advanced or Metastatic Breast Cancer
Interventions: Phesgo, Giredestrant, Docetaxel, Paclitaxel, LHRH Agonist, Optional Endocrine Therapy of Investigator's Choice; Drug
Lead sponsor: Hoffmann-La Roche; Industry
Eligibility: 18 Years and older
Enrollment: 922 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2030
U.S. locations: 10
States / cities: Tucson, Arizona • Los Angeles, California • Jacksonville, Florida + 7 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

A Study Evaluating the Efficacy and Safety of Inavolisib Plus CDK4/6 Inhibitor and Letrozole vs Placebo + CDK4/6i and Letrozole in Participants With Endocrine-Sensitive PIK3CA-Mutated, Hormone Receptor-Positive, HER2-Negative Advanced Breast Cancer

A Clinical Study of Patritumab Deruxtecan to Treat Breast Cancer (MK-1022-016)

Abemaciclib (LY2835219) Plus Fulvestrant Compared to Placebo Plus Fulvestrant in Previously Treated Breast Cancer

A Phase II Study Evaluating the Efficacy and Safety of Inavolisib Plus Ribociclib Plus Fulvestrant Versus Placebo Plus Ribociclib Plus Fulvestrant in Participants With Advanced Breast Cancer

A Single Arm Phase II Study of ADjuvant Endocrine Therapy, Pertuzumab, and Trastuzumab for Patients With Anatomic Stage I Hormone Receptor-positive, HER2-positive Breast Cancer

Trial of 225Ac-DOTATATE (RYZ101) in Subjects With ER+, HER2-negative Unresectable or Metastatic Breast Cancer Expressing SSTRs.

AVA6103 in Subjects With Locally Advanced or Metastatic Selected Solid Tumors

Study of IEV407 as Single Agent or in Combination in Patients With Advanced HR+/HER2- Breast Cancer

Phase 3 Study of RLY-2608 + Fulvestrant vs Capivasertib + Fulvestrant as Treatment for Locally Advanced or Metastatic PIK3CA-mutant HR+/HER2- Breast Cancer

National Cancer Institute "Cancer Moonshot Biobank"

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

A Study to Evaluate the Efficacy and Safety of Giredestrant in Combination With Phesgo (Pertuzumab, Trastuzumab, and Hyaluronidase-zzxf) Versus Phesgo in Participants With Locally Advanced or Metastatic Breast Cancer (heredERA Breast Cancer)

About this Breast Cancer clinical trials directory page