Clinical trials
Breast clinical trials
Below are recruiting breast clinical trials, each written for real people, not researchers. We’re tracking 2,627 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04874064Recruiting
AI blood tests for triple-negative breast cancer after treatment
This study uses a computer (AI) to read results from blood tests to look for signs of remaining triple-negative breast cancer, before and/or after surgery. It may help doctors better detect residual tumor and guide follow-up care.
London, OntarioAges 18 years+ - NCT05831397Recruiting
Study tests tiny blood “packages” during breast cancer chemotherapy
This trial studies small particles in the blood (called extracellular vesicles) in people receiving chemotherapy before surgery for breast cancer. It may help doctors learn more about what those particles can tell them during neoadjuvant treatment.
Pavia, LombardyAges 18–80 - NCT05817227Recruiting
Study of selenium-related markers in triple-negative breast cancer
This study looks at “selenoproteins” (protein markers in the body) to understand how triple-negative breast cancer behaves and whether they could be targets for future treatments. You may be asked to provide samples before any cancer drug treatment to see if these markers predict outcomes.
Naples, NapoliAges 18 years+ - NCT05831878Recruiting
Drug RC48 for HER2-low or HER2-ultralow breast cancer
This trial tests RC48, an antibody-drug treatment, for people with advanced breast cancer that cannot be cured or removed, specifically HER2-low (or HER2-ultralow) tumors. It may help by targeting cancer cells with this “HER2-low” trait while limiting spread in the body.
ShanghaiAges 18 years+ - NCT05806060RecruitingPhase 3
Targeted first treatment for a rare TNBC subtype with spread
This Phase 3 trial tests a more precise treatment strategy for a specific rare type of triple-negative breast cancer (TNBC) called the BLIS subtype. It’s for people whose cancer has spread or cannot be fully removed and who have not had chemo or targeted therapy for metastatic TNBC yet.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT05792150Recruiting
Registry for young women with certain early breast cancer treatments
This registry collects information from pre- or perimenopausal women with early breast cancer who are treated with standard care, plus tumor testing like MammaPrint®. It may help doctors better understand which treatments work best for different risk groups.
Baden-Baden, Baden-WurttembergAges 18–60 - NCT05780814Recruiting
Treating insomnia to improve weight loss after breast cancer
This study looks at whether improving insomnia (trouble falling asleep or staying asleep) can help survivors of breast cancer lose weight more successfully through a structured behavioral weight loss program. It may help if sleep problems are making it harder to change eating and activity habits.
Washington D.C., District of ColumbiaAges 18 years+ - NCT05798338Recruiting
Study blood samples and tiny cell particles in breast cancer
This study looks at tiny particles released by cells (called extracellular vesicles) in people with breast cancer. It may help researchers better understand breast cancer and how it behaves, which could improve future testing or treatments.
Pavia, LombardyAges 18–90 - NCT05076682RecruitingPhase 2
Study for hard-to-treat triple-negative breast cancer that keeps growing
This Phase 2 trial tests a treatment plan for triple-negative breast cancer that has come back or kept progressing after prior immunotherapy (sometimes along with targeted therapy or chemotherapy). It may help by trying to make the cancer more controllable when it has become resistant to earlier treatment.
ShanghaiAges 18–70 - NCT05769010RecruitingPhase 2
HER2-positive or low breast cancer brain metastasis drug study
This Phase 2 study tests SHR-A1811 in people with HER2-positive (or HER2-low) advanced breast cancer that has spread to the brain. It aims to shrink brain tumors and control the cancer in the brain, especially when there was no need for urgent local treatment like radiation or surgery.
Zhengzhou, HenanAges 18–75 - NCT05770531RecruitingPhase 2
Blood test guides chemo changes for metastatic breast cancer
This Phase 2 study uses a blood test that looks for “circulating tumor DNA” to help decide if standard chemotherapy should be changed. It aims to see whether this approach improves how well treatment works for certain metastatic (stage IV) breast cancers.
Nashville, TennesseeAges 18 years+ - NCT05774678RecruitingPhase 3
Pre-surgery radiation options for invasive breast cancer
This trial compares two schedules of radiation given before mastectomy to see which works better for invasive breast cancer, followed by immediate breast reconstruction. It also studies tiny “biomarker” signals in tissue to learn why one radiation approach may help more.
Houston, TexasAges 18 years+ - NCT05753618RecruitingPhase 4
Skipping growth-factor shots during breast cancer chemotherapy
This trial tests whether patients can safely skip a preventive white-blood-cell growth shot (G-CSF) while receiving a common breast cancer chemotherapy regimen. It may help reduce injections and side effects, while watching closely for fevers and low white blood counts.
Kingston, OntarioAges 18 years+ - NCT05748834RecruitingPhase 2
Tucatinib plus Doxil for HER2-positive metastatic breast cancer
This Phase 2 study tests tucatinib (a HER2-targeted pill) plus Doxil (a chemotherapy medicine) to slow or shrink HER2-positive metastatic breast cancer that has been treated before. It may help by targeting HER2 cancer cells more effectively than past treatments alone.
Columbia, MarylandAges 18 years+ - NCT05766891RecruitingPhase 2/Phase 3
Hypnosis to reduce pain medication during breast cancer surgery
This trial tests whether talking with a nurse and using hypnosis before surgery can reduce the need for pain medicine during and after surgery. It aims to help you recover with less pain and fewer side effects from opioids.
Houston, TexasAges 18 years+ - NCT05763641Recruiting
Targeted treatment after chemo for certain breast cancers
This trial studies an additional treatment given after chemotherapy for locally advanced breast cancer that has spread to specific underarm lymph nodes. It may help some people reduce cancer returning, especially when tumors match certain growth and spread features.
L'Hospitalet de Llobregat, BarcelonaAges 18 years+ - NCT03265379Recruiting
Registry study for breast cancer invading the chest wall
This study follows people with breast cancer that has spread into the chest wall who are planning full-thickness chest wall surgery. It aims to improve quality of life by collecting real-world information during and after treatment.
Toronto, OntarioAges 18 years+ - NCT05716516RecruitingPhase 2
Estradiol pill for ER-positive advanced breast cancer
This trial studies whether an estradiol (a form of estrogen) treatment can help people with ER-positive advanced breast cancer. It is mainly for post-menopausal women whose cancer is not curable and has already been treated with endocrine (hormone) therapies.
Lebanon, New HampshireAges 18 years+ - NCT05710705Recruiting
Bioimpedance monitoring in belly-flap breast reconstruction
This study tests a method called bioimpedance to monitor blood flow in the transplanted belly tissue during breast reconstruction surgery. It may help doctors know when the blood supply is stable, which could lead to safer recovery.
AmiensAges 18 years+ - NCT05728268RecruitingPhase 2
Test dose-dense chemo before surgery for high-growth hormone-positive breast cancer
This Phase 2 study tests a faster, more frequent chemotherapy schedule given before surgery (neoadjuvant therapy) for certain breast cancers that grow quickly. It may help shrink the tumor before the operation and improve treatment response in people who fit the tumor and health criteria.
Shantou, GuangdongAges 18–70 - NCT05736367Recruiting
Study tumor metabolism in certain types of breast cancer surgery
This study looks at how breast cancer cells use energy and nutrients in hormone-receptor positive, HER2-negative tumors during planned surgery. It may help researchers understand the cancer better by comparing tumor tissue with nearby normal tissue.
New Brunswick, New JerseyAges 18 years+ - NCT05736354Recruiting
Study causes of problems after breast implants
This study looks at why breast implants can lead to complications and what those problems may involve. You may be asked to let researchers collect information and tissue or fluid samples when you have your implant removed or another breast surgery.
Carmel, IndianaAges 18 years+ - NCT05683418RecruitingPhase 1
Study of a new drug for PIK3CA-mutated HR+ HER2- breast cancer
This early-stage study tests the safety and tolerability of TOS-358 in women with HR-positive, HER2-negative breast cancer that has a specific gene change (PIK3CA). It may help learn whether this targeted treatment is safe enough to move forward.
Chicago, IllinoisAges 18 years+ - NCT05696626RecruitingPhase 3
Test a new pill plus abemaciclib versus standard therapy
This Phase 3 study compares lasofoxifene plus abemaciclib versus fulvestrant plus abemaciclib for ER-positive, HER2-negative breast cancer that has an ESR1 mutation. It looks for better tumor control in people whose cancer has progressed on hormone therapy (an aromatase inhibitor) and who meet specific safety and testing requirements.
Scottsdale, ArizonaAges 18 years+
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Common questions
- Are there clinical trials for breast?
- Yes. Clin2 currently lists 2,627 recruiting breast studies from the U.S. registry, each rewritten for real people, not researchers, so you can see what it’s testing and who it’s for.
- How do I know if I qualify for a breast trial?
- Each study lists its eligibility criteria — rules about age, diagnosis, and prior treatments. On every Clin2 trial page we explain these in words written for real people and offer a short, optional pre-screen for a fit read. The study team makes the final decision.
- Does it cost anything to join a breast trial?
- Using Clin2 is always free. Many trials cover the cost of the study treatment and related visits; some reimburse travel. The study team explains exactly what’s covered before you decide.
Related conditions
Clin2 helps you find and understand clinical trials and does not provide medical advice. Study data comes from ClinicalTrials.gov. Talk with your doctor about whether a specific trial is right for you.