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 11, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 11, 2026, 5:38 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 37–48 of 1,130 matching trials for Breast Cancer.

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Conditions: Breast Cancer
Interventions: GDC-4198, Giredestrant, Abemaciclib; Drug
Lead sponsor: Genentech, Inc.; Industry
Eligibility: 18 Years and older
Enrollment: 285 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2025 – 2028
U.S. locations: 32
States / cities: Huntsville, Alabama • Tucson, Arizona • Duarte, California + 28 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: Breast Cancer, TNBC - Triple-Negative Breast Cancer, HER2-negative Breast Cancer
Interventions: PCS6422 and capecitabine, Capecitabine; Drug
Lead sponsor: Processa Pharmaceuticals; Industry
Eligibility: 18 Years and older
Enrollment: 20 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2026
U.S. locations: 12
States / cities: Los Angeles, California • Oxnard, California • Miami, Florida + 9 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: 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: Solid Tumor, Advanced Solid Tumor, Solid Tumor, Adult, Metastatic Tumor, Ovarian Cancer, Ovarian Neoplasms, Ovarian Carcinoma, Metastatic Ovarian Carcinoma, Endometrial Neoplasms, Endometrial Diseases, Metastatic Endometrial Cancer, Triple Negative Breast Cancer, Metastatic Endometrial Carcinoma, Advanced Endometrial Carcinoma, Advanced Ovarian Carcinoma, Gastric Cancer, Advanced Gastric Carcinoma, Metastatic Gastric Cancer, Metastatic Gastric Carcinoma, Small Cell Lung Cancer, Small Cell Lung Carcinoma, Triple Negative Breast Neoplasms, Platinum-resistant Ovarian Cancer, Platinum-refractory Ovarian Carcinoma, CCNE1 Amplification, Hormone Receptor Negative Breast Carcinoma, Human Epidermal Growth Factor 2 Negative Carcinoma of Breast, Progesterone-receptor-positive Breast Cancer
Interventions: NKT3964, Paclitaxel, Doxorubicin; Drug
Lead sponsor: NiKang Therapeutics, Inc.; Industry
Eligibility: 19 Years and older
Enrollment: 238 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2029
U.S. locations: 19
States / cities: Little Rock, Arkansas • Los Angeles, California • San Francisco, California + 16 more

Conditions: Inoperable, Locally Advanced or Metastatic, ER-positive Breast Cancer
Interventions: Giredestrant, Abemaciclib, Ipatasertib, Inavolisib, Ribociclib, Everolimus, Samuraciclib, PH FDC SC, Palbociclib, Atezolizumab; Drug
Lead sponsor: Hoffmann-La Roche; Industry
Eligibility: 18 Years and older · Female only
Enrollment: 316 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2029
U.S. locations: 12
States / cities: Duarte, California • Irvine, California • San Francisco, California + 9 more

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: Metastatic Breast Cancer, Leptomeningeal Disease
Interventions: High-dose Methotrexate (8 gm/m2; HD-MTX); Drug
Lead sponsor: Wake Forest University Health Sciences; Other
Eligibility: 18 Years and older
Enrollment: 16 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2015 – 2027
U.S. locations: 3
States / cities: Baltimore, Maryland • St Louis, Missouri • Winston-Salem, North Carolina

Conditions: Breast Cancer, HER2-positive Breast Cancer, HER2-positive Metastatic Breast Cancer, Breast Cancer Stage I, Breast Cancer Stage II, Breast Cancer Stage III, Breast Cancer Stage IV, Cardiotoxicity
Interventions: Cardiopulmonary Exercise Test, Echocardiogram, Echocardiography; Diagnostic Test
Lead sponsor: Memorial Sloan Kettering Cancer Center; Other
Eligibility: 18 Years and older · Female only
Enrollment: 23 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2027
U.S. locations: 1
States / cities: New York, New York

Conditions: Advanced Solid Malignancies
Interventions: AZD9574, Temozolomide (TMZ), [11C]AZ1419 3391, Trastuzumab Deruxtecan (T-DXd), Datopotamab Deruxtecan (Dato-DXd); Drug
Lead sponsor: AstraZeneca; Industry
Eligibility: 18 Years to 130 Years
Enrollment: 695 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2028
U.S. locations: 11
States / cities: La Jolla, California • Los Angeles, California • San Francisco, California + 7 more

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 to Evaluate the Effect of GDC-4198 Alone and in Combination With Giredestrant Versus Abemaciclib and Giredestrant in Participants With Locally Advanced or Metastatic Estrogen Receptor-Positive (ER+), Human Epidermal Growth Factor Receptor-Negative (HER2-) 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

A Phase 2 Study of PCS6422 With Capecitabine in Patients With Advanced or Metastatic Breast Cancer

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

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

A Study With NKT3964 for Adults With Advanced/Metastatic Solid Tumors

A Study Evaluating the Efficacy and Safety of Multiple Treatment Combinations in Participants With 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

Prospective Evaluation Of High-Dose Systemic Methotrexate In Patients With Breast Cancer And Leptomeningeal Metastasis

Study of Cardiopulmonary Exercise Testing in Women Who Have HER2-Positive Breast Cancer With Mild Cardiotoxicity

Study of AZD9574 as Monotherapy and in Combination With Anti-cancer Agents in Participants With Advanced Solid Malignancies

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