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

41
Phase 1
96
Phase 2
13
Phase 3
7
Phase 4
143
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

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

This phase III trial compares 6 months of human epidermal growth factor receptor 2 (HER2)-targeted therapy to 12 months of HER2-targeted therapy for the treatment of HER2-positive (+) breast cancer in patients that had a pathologic complet…

Sponsor: Alliance for Clinical Trials in Oncology
NCT ID: NCT06876714
Locations:
  • Cancer Center at Saint Joseph's — Phoenix, Arizona
  • Mayo Clinic Hospital in Arizona — Phoenix, Arizona
  • Mercy Hospital Fort Smith — Fort Smith, Arkansas

+ 649 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

+ 181 more sites in the U.S.

Phase 3 Recruiting Industry

A Study of Elacestrant Versus Standard Endocrine Therapy in Women and Men With ER+,HER2-, Early Breast Cancer With High Risk of Recurrence

The primary goal of this study is to evaluate the effectiveness of elacestrant versus standard endocrine therapy in participants with node-positive, Estrogen Receptor-positive (ER+), Human Epidermal Growth Factor-2 negative (HER2-) early b…

Sponsor: Stemline Therapeutics, Inc.
NCT ID: NCT06492616
Locations:
  • Southern Cancer Center, PC — Daphne, Alabama
  • Ironwood Cancer and Research Centers — Chandler, Arizona
  • Banner MD Anderson Cancer Center — Gilbert, Arizona

+ 162 more sites in the U.S.

Phase 3 Recruiting Industry

A Phase III Study of Dato-DXd With or Without Durvalumab Compared With Investigator's Choice of Chemotherapy in Combination With Pembrolizumab in Patients With PD-L1 Positive Locally Recurrent Inoperable or Metastatic Triple-negative Breast Cancer

This is a Phase III, randomised, open-label, 3-arm, multicentre, international study assessing the efficacy and safety of Dato-DXd with or without durvalumab compared with investigator's choice chemotherapy in combination with pembrolizuma…

Sponsor: AstraZeneca
NCT ID: NCT06103864
Locations:
  • Research Site — Daphne, Alabama
  • Research Site — Springdale, Arkansas
  • Research Site — Duarte, California

+ 61 more sites in the U.S.

Phase 3 Recruiting Academic/Other

Testing Proton Craniospinal Radiation Therapy Versus the Usual Radiation Therapy for Leptomeningeal Metastasis, RADIATE-LM Trial

This phase III trial compares proton craniospinal irradiation (pCSI) to involved-field radiation therapy (IFRT) for the treatment of breast or non-small cell lung cancer that has spread from where it first started to the cerebrospinal flui…

Sponsor: NRG Oncology
NCT ID: NCT06500481
Locations:
  • Mayo Clinic Hospital in Arizona — Phoenix, Arizona
  • University of Arkansas for Medical Sciences — Little Rock, Arkansas
  • UC San Diego Health System - Encinitas — Encinitas, California

+ 55 more sites in the U.S.

Phase 3 Recruiting Industry

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

This study will evaluate the efficacy and safety of the combination of inavolisib plus a cyclin-dependent kinase 4 and 6 inhibitor (CDK4/6i) and letrozole versus placebo plus a CDK4/6i and letrozole in the first-line setting in participant…

Sponsor: Hoffmann-La Roche
NCT ID: NCT06790693
Locations:
  • The Dignity Health Cancer Institute — Phoenix, Arizona
  • Disney Family Cancer Center — Burbank, California
  • Scripps Health — La Jolla, California

+ 48 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

+ 39 more sites in the U.S.

Phase 3 Recruiting Industry

A Study to Evaluate the Efficacy and Safety of Inavolisib in Combination With Phesgo Versus Placebo in Combination With Phesgo in Participants With PIK3CA-Mutated HER2-Positive Locally Advanced or Metastatic Breast Cancer

This study will evaluate the efficacy and safety of inavolisib in combination with Phesgo (pertuzumab, trastuzumab, and rHuPH20 injection for subcutaneous use) compared with placebo in combination with Phesgo, as maintenance therapy, after…

Sponsor: Hoffmann-La Roche
NCT ID: NCT05894239
Locations:
  • Banner Health MD Anderson AZ — Gilbert, Arizona
  • Disney Family Cancer Center — Burbank, California
  • City of Hope — Corona, California

+ 17 more sites in the U.S.

Phase 3 Recruiting Academic/Other

Bupivacaine vs Placebo for Unilateral Mastectomy Surgical Site Post-operative Pain Control

The purpose of this study is to compare using FDA-approved bupivacaine (a numbing medicine), along with the usual medications for post-operative pain control to using the usual medications for postoperative pain control alone. The addition…

Sponsor: Memorial Sloan Kettering Cancer Center
NCT ID: NCT03351348
Locations:
  • Memorial Sloan Kettering Basking Ridge (Consent and follow-up only) — Basking Ridge, New Jersey
  • Memorial Sloan Kettering Monmouth (All Protocol Activities) — Middletown, New Jersey
  • Memorial Sloan Kettering Bergen (Consent and follow-up only) — Montvale, New Jersey

+ 4 more sites in the U.S.

Phase 3 Recruiting Academic/Other

Delayed Sentinel Lymph Node Biopsy in Ductal Cancer in Situ

The trial aims to investigate the use of superparamagnetic iron oxide (SPIO) nanoparticles as a tracer for delayed sentinel lymph node dissection (d-SLND) in patients where upfront axillary surgery (SLND) is oncologically deemed unnecessar…

Sponsor: Uppsala University
NCT ID: NCT04722692
Locations:
  • Baylor College Of Medicine — Houston, Texas

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: 2026-06-15