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 15, 2026 Report an issue

ClinicalTrials.gov public records Last synced Oct 15, 2026, 8:38 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 181–192 of 678 matching trials for Breast Cancer.

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Conditions: Breast Cancer
Interventions: Letrozole, Tamoxifen, Palbociclib, Endocrine Therapy; Drug
Lead sponsor: Dana-Farber Cancer Institute; Other
Eligibility: 18 Years and older · Female only
Enrollment: 195 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2016 – 2031
U.S. locations: 11
States / cities: Stamford, Connecticut • Brewer, Maine • Boston, Massachusetts + 5 more

Conditions: Metastatic Breast Cancer
Interventions: Lasofoxifene in combination with abemaciclib, Fulvestrant in combination with abemaciclib; Drug
Lead sponsor: LeonaBio; Industry
Eligibility: 18 Years and older
Enrollment: 600 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2028
U.S. locations: 36
States / cities: Scottsdale, Arizona • Tucson, Arizona • Santa Rosa, California + 25 more

Conditions: Hormone Receptor-positive Breast Cancer, Hormone Receptor Positive HER-2 Negative Breast Cancer, Metastatic Breast Cancer
Interventions: EP0062, Elacestrant, Everolimus, Abemaciclib, Fulvestrant, Exemestane; Drug
Lead sponsor: Ellipses Pharma; Industry
Eligibility: 18 Years and older · Female only
Enrollment: 95 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2028
U.S. locations: 7
States / cities: New Haven, Connecticut • Tampa, Florida • Boston, Massachusetts + 4 more

Conditions: Breast Cancer, Small Cell Lung Cancer, Ovarian Cancer, Gastric Cancer, Hormone-receptor-positive Breast Cancer, Hormone Receptor Positive HER-2 Negative Breast Cancer, Advanced Solid Tumor, Endometrial Cancer, Prostate Cancer, TNBC - Triple-Negative Breast Cancer, GastroEsophageal Cancer, Bladder Cancer
Interventions: BG-68501, Fulvestrant, BGB-43395; Drug
Lead sponsor: BeiGene; Industry
Eligibility: 18 Years and older
Enrollment: 103 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2024 – 2026
U.S. locations: 6
States / cities: Newport Beach, California • Lake Mary, Florida • St Louis, Missouri + 3 more

Conditions: Estrogen Receptor (ER)-Positive, HER2-negative, Locally Advanced or Metastatic Breast Cancer
Interventions: Giredestrant, Exemestane, Fulvestrant, Tamoxifen, Everolimus, LHRH Agonist, Dexamethasone Mouth Rinse; Drug
Lead sponsor: Genentech, Inc.; Industry
Eligibility: 18 Years and older
Enrollment: 373 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2026
U.S. locations: 55
States / cities: Anchorage, Alaska • Tucson, Arizona • Little Rock, Arkansas + 47 more

Conditions: Breast Cancer, Primary Hormone Receptor Positive Breast Cancer
Interventions: Exercise Treatment, Plant-Based Diet, Physical activity, Nutrition counseling, Replication Exercise Test; Other
Lead sponsor: Memorial Sloan Kettering Cancer Center; Other
Eligibility: 18 Years and older · Female only
Enrollment: 43 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2020 – 2027
U.S. locations: 7
States / cities: Basking Ridge, New Jersey • Middletown, New Jersey • Montvale, New Jersey + 4 more

Conditions: Breast Cancer
Interventions: Letrozole, Abemaciclib; Drug
Lead sponsor: University of Texas Southwestern Medical Center; Other
Eligibility: 18 Years and older · Female only
Enrollment: 60 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2021 – 2028
U.S. locations: 2
States / cities: Dallas, Texas

Conditions: Breast Cancer
Interventions: Not listed
Lead sponsor: Novartis Pharmaceuticals; Industry
Eligibility: 18 Years to 100 Years
Enrollment: 750 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026
U.S. locations: 1
States / cities: East Hanover, New Jersey

Conditions: Breast Cancer
Interventions: Palbociclib, Standard Adjuvant Endocrine Therapy; Drug
Lead sponsor: Alliance Foundation Trials, LLC.; Other
Eligibility: 18 Years and older
Enrollment: 5,796 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2015 – 2028
U.S. locations: 192
States / cities: Mobile, Alabama • Anchorage, Alaska • Phoenix, Arizona + 138 more

Conditions: Breast Cancer
Interventions: Trastuzumab Deruxtecan; Drug
Lead sponsor: Daiichi Sankyo; Industry
Eligibility: 18 Years and older
Enrollment: 250 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2023 – 2027
U.S. locations: 5
States / cities: Miami Beach, Florida • Tampa, Florida • Boston, Massachusetts + 2 more

Conditions: HER2 Low Breast Carcinoma, Triple Negative Breast Cancer, Hormone-receptor-positive Breast Cancer, Hormone Receptor Positive Breast Carcinoma
Interventions: ARX788, Computed Tomography (CT), Biospecimen Collection, Amiloride; Drug · Procedure
Lead sponsor: Laura Huppert, MD, BA; Other
Eligibility: 18 Years and older
Enrollment: 36 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2026 – 2029
U.S. locations: 1
States / cities: San Francisco, California

Conditions: Cervical Cancer, Breast Cancer, Colon Cancer, NSCLC, mCRPC (Metastatic Castration-resistant Prostate Cancer), Glioblastoma, Nonsmall Cell Lung Cancer
Interventions: ²¹²Pb-DOTAM-GRPR1; Drug
Lead sponsor: Orano Med Theranostics, SAS; Industry
Eligibility: 18 Years and older
Enrollment: 48 participants
Healthy volunteers: Healthy volunteers not accepted
Timeline: 2022 – 2032
U.S. locations: 8
States / cities: Chicago, Illinois • Iowa City, Iowa • Lexington, Kentucky + 3 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

Palbociclib and Endocrine Therapy for LObular Breast Cancer Preoperative Study (PELOPS)

Evaluation of Lasofoxifene Combined With Abemaciclib Compared With Fulvestrant Combined With Abemaciclib in Locally Advanced or Metastatic ER+/HER2- Breast Cancer With an ESR1 Mutation

Phase 1/2 Study to Evaluate EP0062 as Monotherapy and in Combination in Patients With Advanced or Metastatic AR+/HER-2-/ER+ Breast Cancer

A Study to Examine the Safety of Different Doses of BG-68501 Given to Participants With Advanced-Stage Tumors

A Study Evaluating the Efficacy and Safety of Giredestrant Plus Everolimus Compared With the Physician's Choice of Endocrine Therapy Plus Everolimus in Participants With Estrogen Receptor-Positive, HER2-Negative, Locally Advanced or Metastatic Breast Cancer (evERA Breast Cancer)

A Study of the Body's Response to Exercise and a Plant-Based Diet in Overweight Postmenopausal Women With Breast Cancer

Single Cell Immune and Non-immune Correlates of Response to Neoadjuvant Abemaciclib

A Real-World Study of Early Breast Cancer Patients Eligible for Treatment With CDK4/6 Inhibitors

PALbociclib CoLlaborative Adjuvant Study

Trastuzumab Deruxtecan (T-DXd) in Patients Who Have Hormone Receptor-negative and Hormone Receptor-positive HER2-low or HER2 IHC 0 Metastatic Breast Cancer

ARX788 for Treating Patients With HER2-low Locally Advanced Unresectable or Metastatic Breast Cancer

Safety and Tolerability of ²¹²Pb-DOTAM-GRPR1 in Adult Subjects With Recurrent or Metastatic GRPR-expressing Tumors

About this Breast Cancer clinical trials directory page