CancerDrs

Breast Cancer clinical trials

300 actively recruiting breast cancer trials in the United States. The most common cancer in women in the U.S. Clinical trials test new therapies for early-stage, locally advanced, and metastatic breast cancer.

Data from ClinicalTrials.gov · last refreshed · Breast Cancer stats on SEER

53
Phase 1
93
Phase 2
16
Phase 3
6
Phase 4
132
Other

Breast Cancer by the numbers (U.S.)

316,950
Estimated new cases (2025)
42,170
Estimated deaths (2025)
91.7%
5-year relative survival
63
Median age at diagnosis

Source: NCI SEER Cancer Stat Facts

Browse breast cancer trials by state

Top trials by phase + site coverage

Phase 3 Recruiting Network

Shorter Chemo-Immunotherapy Without Anthracycline Drugs for Early-Stage Triple Negative Breast Cancer

This phase III trial compares the effects of shorter chemotherapy (chemo)-immunotherapy without anthracyclines to usual chemo-immunotherapy for the treatment of early-stage triple negative breast cancer. Paclitaxel is in a class of medicat…

Sponsor: SWOG Cancer Research Network
NCT ID: NCT05929768
Locations:
  • University of Alabama at Birmingham Cancer Center — Birmingham, Alabama
  • Anchorage Associates in Radiation Medicine — Anchorage, Alaska
  • Anchorage Radiation Therapy Center — Anchorage, Alaska

+ 952 more sites in the U.S.

Phase 3 Recruiting Academic/Other

Pembrolizumab vs. Observation in People With Triple-negative Breast Cancer Who Had a Pathologic Complete Response After Chemotherapy Plus Pembrolizumab

This phase III trial compares the effect of continuation of treatment with pembrolizumab (usual approach) to observation only at preventing cancer from coming back in patients with early-stage triple-negative breast cancer (TNBC) who achie…

Sponsor: Alliance for Clinical Trials in Oncology
NCT ID: NCT05812807
Locations:
  • University of Alabama at Birmingham Cancer Center — Birmingham, Alabama
  • Thomas Hospital — Fairhope, Alabama
  • Mobile Infirmary Medical Center — Mobile, Alabama

+ 825 more sites in the U.S.

Phase 3 Recruiting Network

S1501 Dual Observational and Randomized Cohort Study of Patients With Metastatic HER-2+ Breast Cancer at Risk of Cardiac Toxicity

This trial has two cohorts of patients with human epidermal growth factor receptor (HER)-2-positive breast cancer that has spread to other places in the body. All patients must be receiving trastuzumab-based treatment. Both cohorts are bei…

Sponsor: SWOG Cancer Research Network
NCT ID: NCT03418961
Locations:
  • Anchorage Associates in Radiation Medicine — Anchorage, Alaska
  • Alaska Breast Care and Surgery LLC — Anchorage, Alaska
  • Alaska Oncology and Hematology LLC — Anchorage, Alaska

+ 574 more sites in the U.S.

Phase 3 Recruiting NIH

Testing Whether Hormone Therapy With Ribociclib is as Effective as Chemotherapy Followed by Hormone Therapy With Ribociclib for the Treatment of High Anatomic Stage Breast Cancer With Low Recurrence Risk, The RxFINE-Low Trial

This phase III trial compares standard of care hormone therapy plus ribociclib to chemotherapy followed by hormone therapy plus ribociclib for the treatment of patients with high anatomic stage breast cancer with low risk of the cancer ret…

Sponsor: National Cancer Institute (NCI)
NCT ID: NCT07391774
Locations:
  • NEA Baptist Memorial Hospital and Fowler Family Cancer Center - Jonesboro — Jonesboro, Arkansas
  • Sutter Auburn Faith Hospital — Auburn, California
  • Alta Bates Summit Medical Center-Herrick Campus — Berkeley, California

+ 251 more sites in the U.S.

Phase 3 Recruiting Industry

Study of Sacituzumab Govitecan-hziy and Pembrolizumab Versus Treatment of Physician's Choice in Patients With Triple Negative Breast Cancer Who Have Residual Invasive Disease After Surgery and Neoadjuvant Therapy (ASCENT-05/AFT-65 OptimICE-RD/GBG 119/NSABP B-63)

The goal of this study is to find out if the experimental product, sacituzumab govitecan-hziy (SG) in combination with pembrolizumab given after surgery, is effective and safe compared to the treatment of physician's choice (TPC) which inc…

Sponsor: Gilead Sciences
NCT ID: NCT05633654
Locations:
  • Alabama Oncology — Birmingham, Alabama
  • Clearview Cancer Institute — Huntsville, Alabama
  • Palo Verde Hematology Oncology — Glendale, Arizona

+ 185 more sites in the U.S.

Phase 3 Recruiting Industry

Sacituzumab Tirumotecan (MK-2870) Plus Pembrolizumab Versus TPC in TNBC Who Did Not Achieve pCR (MK-2870-012)

This is a randomized, open-label study comparing the efficacy and safety of adjuvant sacituzumab tirumotecan (MK-2870) in combination with pembrolizumab compared to treatment of physician's choice (TPC) in participants with triple-negative…

Sponsor: Merck Sharp & Dohme LLC
NCT ID: NCT06393374
Locations:
  • Infirmary Cancer Care ( Site 0001) — Mobile, Alabama
  • Ironwood Cancer & Research Centers-Research ( Site 0054) — Chandler, Arizona
  • MemorialCare Orange Coast Medical Center ( Site 9501) — Fountain Valley, California

+ 90 more sites in the U.S.

Phase 3 Recruiting Industry

Study of the Bria-IMT Regimen and CPI vs Physicians' Choice in Advanced Metastatic Breast Cancer.

This is a multicenter randomized, open label study to evaluate overall survival with the Bria-IMT regimen in combination with Checkpoint Inhibitor \[Retifanlimab\], versus Treatment of Patients'/Physicians' Choice (TPC) in advanced metasta…

Sponsor: BriaCell Therapeutics Corporation
NCT ID: NCT06072612
Locations:
  • Mayo Clinic-Comprehensive Cancer Center-Breast Clinic — Phoenix, Arizona
  • University of Arizona-Cancer Center — Tucson, Arizona
  • Los Angeles cancer Network_Anaheim — Anaheim, California

+ 76 more sites in the U.S.

Phase 3 Recruiting Network

Adding Surgery and Radiation to the Usual Treatment for HER2-Positive Breast Cancer That Had Already Spread at Diagnosis

This phase III trial evaluates the effect of adding locoregional therapy (surgery and radiation) and metastasis-directed stereotactic body radiation therapy (SBRT) to standard systemic therapy following standard HER2-targeted systemic ther…

Sponsor: SWOG Cancer Research Network
NCT ID: NCT07578116
Locations:
  • NEA Baptist Memorial Hospital and Fowler Family Cancer Center - Jonesboro — Jonesboro, Arkansas
  • Smilow Cancer Hospital-Derby Care Center — Derby, Connecticut
  • Smilow Cancer Hospital Care Center-Fairfield — Fairfield, Connecticut

+ 56 more sites in the U.S.

Phase 2, Phase 3 Recruiting Industry

A Study of Izalontamab Brengitecan Versus Chemotherapy in Participants With Previously Untreated, Locally Advanced, Recurrent Inoperable, or Metastatic Triple-negative Breast Cancer Ineligible for Anti-PD(L)1 Drugs (IZABRIGHT-Breast01)

The purpose of this study is to assess the efficacy and safety of iza-bren, a bi-specific antibody-drug conjugate against EGFR and HER3 with a topoisomerase inhibitor payload versus treatment of physician's choice (TPC) (paclitaxel, nab-pa…

Sponsor: Bristol-Myers Squibb
NCT ID: NCT06926868
Locations:
  • Local Institution - 0303 — Hot Springs, Arkansas
  • Helios Clinical Research — Cerritos, California
  • Local Institution - 0307 — Cerritos, California

+ 43 more sites in the U.S.

Phase 3 Recruiting Industry

A Study of Metastases Free Survival With Saruparib vs Placebo Added to a Standard RT/ADT in Men With High-risk Prostate Cancer With a BRCA Mutation

The purpose of the study is to demonstrate superiority of Saruparib (AZD5305) relative to placebo added to a standard radiation therapy (RT) + androgen deprivation therapy (ADT) regimen by assessment of metastases-free survival in particip…

Sponsor: AstraZeneca
NCT ID: NCT06952803
Locations:
  • Research Site — Phoenix, Arizona
  • Research Site — Tucson, Arizona
  • Research Site — La Jolla, California

+ 42 more sites in the U.S.

Phase 3 Recruiting Industry

A Study Evaluating the Efficacy and Safety of Inavolisib Plus Fulvestrant Compared With Alpelisib Plus Fulvestrant in Participants With HR-Positive, HER2-Negative, PIK3CA Mutated, Locally Advanced or Metastatic Breast Cancer Post CDK4/6i and Endocrine Combination Therapy

This is a Phase III, multicenter, randomized, open-label, global study designed to evaluate the efficacy and safety of inavolisib plus fulvestrant compared with alpelisib plus fulvestrant in patients with hormone receptor (HR)-positive, hu…

Sponsor: Hoffmann-La Roche
NCT ID: NCT05646862
Locations:
  • Marin Cancer Care Inc — Greenbrae, California
  • Cancer Blood and Specialty Clinic — Los Alamitos, California
  • Los Angeles Cancer Network — Los Angeles, California

+ 36 more sites in the U.S.

Phase 3 Recruiting Academic/Other

A Study of a Comprehensive Prevention Program to Reduce Lymphedema After Axillary Lymph Node Dissection in People With Breast Cancer

The purpose of this study to test whether a comprehensive program may help the lymph fluid to drain out of the arm and prevent lymphedema in participants with breast cancer.

Sponsor: Memorial Sloan Kettering Cancer Center
NCT ID: NCT06144164
Locations:
  • Memorial Sloan Kettering Basking Ridge (Limited Protocol Activities) — Basking Ridge, New Jersey
  • Memorial Sloan Kettering Monmouth (Limited Protocol Activities) — Middletown, New Jersey
  • Memorial Sloan Kettering Bergen (Limited Protocol Activities) — Montvale, New Jersey

+ 4 more sites in the U.S.

Showing 12 of 300 trials. See all on ClinicalTrials.gov

Before you contact a trial site

Trial eligibility criteria are specific and strict. Reading them carefully before calling a site saves time. These guides walk through what to look for.

Medical disclaimer: Information on this page aggregates public ClinicalTrials.gov data. It is not medical advice. Always confirm eligibility and enrollment details with the trial site or your oncologist.

Source: ClinicalTrials.gov API v2 · Last checked: 2026-11-09