Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,460 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06671691Enrolling by invitationPhase 1
Single-dose radiation for low-risk breast cancer
This trial tests a single, high-precision dose of radiation to the tumor instead of standard surgery or multiple radiation sessions. It is for women with a small, low-risk breast cancer who cannot or choose not to have surgery.
Palma, Balearic IslandsAges Any age - NCT06650748Enrolling by invitationPhase 2
A study of hormone therapy with or without a targeted drug for breast cancer
This trial tests if adding a targeted drug (CDK4/6 inhibitor) to hormone therapy works better than hormone therapy alone for women with a certain type of breast cancer (HR+/HER2-). The study measures the activity of tumor cells (Ki-67) to help decide treatment.
BeijingAges 18–70 - NCT06583395Enrolling by invitation
Meditation retreat study with fitness tracker
This trial studies people attending a 7-day meditation retreat to see how meditation affects well-being. You will wear a fitness tracker and answer surveys.
Palm Desert, CaliforniaAges 21 years+ - NCT05975437Enrolling by invitation
Personalized follow-up care after breast cancer treatment
This trial tests whether a personalized follow-up plan after breast cancer surgery (instead of a fixed schedule) can improve care and support after treatment. It may help people know what follow-up is best for them as they move into survivorship.
Apeldoorn, GelderlandAges 40 years+ - NCT04488614Enrolling by invitation
Biobank study for early-stage breast cancer samples
This study collects and stores biological samples (like tissue or blood) from people with early-stage breast cancer to help future research. It’s mainly for people with a specific type of early breast cancer called high-grade DCIS.
Stavanger, RogalandAges 18–85 - NCT04203849Enrolling by invitation
Study of breast cancer patients getting radiotherapy
This study follows breast cancer patients who are scheduled to receive radiotherapy at a National Cancer Center in Korea. By collecting information during and after treatment, researchers hope to better understand how patients do over time.
Goyang-si, Gyeonggi-doAges 20 years+ - NCT04098640Enrolling by invitation
Testing tumor DNA in younger people with metastatic breast cancer
This study looks at your tumor’s molecular (DNA/biologic) features to better understand metastatic breast cancer in people under 50. You may help researchers by providing tissue samples (biopsies) for lab testing.
Seoul, SeoulAges 19–50 - NCT03762733Enrolling by invitation
Study of stored breast or gynecologic cancer tissue for DNA testing
This study collects and stores tissue from people with breast cancer or other gynecologic cancers to do DNA (genomics) testing. It may help researchers better understand these cancers by comparing genetic patterns from real patient tissue.
Bethesda, MarylandAges 18 years+ - NCT03424005RecruitingPhase 1/Phase 2
Testing new drug combinations for advanced breast cancer
This study tests how well and how safely different combinations of cancer drugs work for people with metastatic or inoperable locally advanced breast cancer. It may help by finding a better treatment option and collecting information to guide future care.
Duarte, CaliforniaAges 18 years+ - NCT06638307RecruitingPhase 1
Study of new drug MEN2312 for advanced breast cancer with specific genetic changes
This trial tests a new drug, MEN2312, for people with advanced breast cancer that has specific genetic changes in PIK3CA, AKT1, or PTEN. It's for those who have already tried certain hormone therapies and a CDK4/6 inhibitor combination, and the cancer has continued to grow.
Springdale, ArkansasAges 18 years+ - NCT07427394RecruitingPhase 2
Camizestrant and atirmociclib for advanced breast cancer
This trial tests two experimental drugs—camizestrant and atirmociclib—for women with advanced ER-positive breast cancer that has worsened after prior treatment. The goal is to see if the combination is safe and tolerable.
St Louis, MissouriAges 18 years+ - NCT02102165Recruiting
Study samples from metastatic triple-negative breast cancer
This study looks at tumor “clues” by using tissue and blood samples in people with metastatic breast cancer (with specific subtype). It aims to better understand what drives the cancer, which may help guide future treatments.
BrusselsAges 18 years+ - NCT06478589RecruitingPhase 2
Survivorship care priorities for older breast cancer survivors
This study looks at what matters most to older breast cancer survivors who have finished treatment. It helps doctors design care plans that fit your personal priorities and health needs.
Bellaire, TexasAges 65–100 - NCT06026657RecruitingPhase 1/Phase 2
NK cells with or without naxitamab for GD2-positive breast cancer
This trial tests a new treatment using immune cells called NK cells combined with chemotherapy (gemcitabine) and possibly naxitamab for people with a certain type of advanced breast cancer that has spread. It aims to see if this approach can help when standard treatments have stopped working.
Columbus, OhioAges 18 years+ - NCT05398861RecruitingPhase 2
Testing utidelone plus bevacizumab for HER2-negative advanced breast cancer
This trial studies whether utidelone combined with bevacizumab can shrink tumors and slow progression in women with advanced HER2-negative breast cancer that has already been treated at least twice. It may help people who have limited options after earlier chemotherapy and/or hormone (endocrine) treatments.
Zhengzhou, HenanAges 18–70 - NCT05505357Recruiting
Skip breast surgery after excellent MRI response
This trial tests whether some women with HER2-positive breast cancer can safely avoid breast surgery if their tumor nearly disappears after chemotherapy. It uses MRI and biopsy results to find people most likely to have no remaining cancer (pCR).
SeoulAges 20 years+ - NCT05256745RecruitingPhase 1/Phase 2
A medicine to protect the heart during breast cancer chemotherapy
This early-phase study tests azeliragon to lower the risk of chemotherapy-related heart damage in women with early-stage breast cancer. Participants get their planned standard chemotherapy, plus the study medicine, and are monitored for safety and heart health.
Washington D.C., District of ColumbiaAges 18 years+ - NCT04824014RecruitingPhase 2
PET imaging for ER+ advanced breast cancer
This trial uses a special PET scan called 4FMFES-PET to take detailed pictures of ER-positive breast cancer that has spread. It helps doctors see where the cancer is and how active it is, which may guide treatment decisions.
Sherbrooke, QuebecAges 18 years+ - NCT04680715RecruitingPhase 2
Tested radiation before and after breast surgery in older women
This Phase 2 trial looks at a specific radiation timing and technique around the time of breast-conserving surgery. It may help reduce the chance the cancer comes back in selected older patients with certain early-stage, hormone-positive, HER2-negative breast cancers.
Clermont-FerrandAges 65 years+ - NCT05530057RecruitingPhase 2
Eribulin plus or minus trastuzumab for HER2-positive breast cancer
This trial tests whether adding trastuzumab to eribulin improves outcomes for people with HER2-positive breast cancer that has come back or spread. It’s meant for patients whose cancer has progressed after prior HER2 and chemotherapy treatments.
SeoulAges 18 years+ - NCT07597629RecruitingPhase 2
SYS6023 combination therapy for advanced breast cancer
This trial tests a new drug combination (SYS6023) for advanced breast cancer that has spread or cannot be surgically removed. The treatment targets a protein called HER3, which may help stop cancer growth in patients whose cancer has progressed despite previous treatments.
Harbin, HeilonjiangAges 18 years+ - NCT07180082RecruitingPhase 2
Pyrotinib for HER2-positive advanced breast cancer
This trial tests whether taking pyrotinib continuously or intermittently can help people with HER2-positive advanced breast cancer that has spread. It is for those who have already received prior treatment for their advanced disease.
ShanghaiAges 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+ - NCT07591090RecruitingPhase 2
Drug combination study for advanced HER2-negative breast cancer
This study tests whether combining two new drugs (AK146D1 and AK112) can help people with advanced breast cancer that is HER2-negative (a type that doesn't have too much of a specific growth protein). The goal is to see if this combination can shrink tumors and improve survival.
Shanghai, Shanghai MunicipalityAges 18–75
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Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,460 recruiting breast cancer 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 cancer 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 cancer 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.