Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,417 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04892693RecruitingPhase 2
Talazoparib for advanced breast cancer with DNA repair defects
This trial studies talazoparib (a targeted pill) in people with advanced breast cancer whose tumors have problems repairing certain DNA damage. If your tumor has these specific “DNA repair” defects, the medicine may work better and stop the cancer from growing.
SeoulAges 19 years+ - NCT07173868Recruiting
PET scans for advanced breast cancer treatment planning
This trial tests whether a special PET scan (FDG PET-CT) can better track how well treatment is working for people with advanced breast cancer. It may help doctors choose the best therapy and monitor response over time.
Seoul, Gannam-guAges 19 years+ - NCT06994377Recruiting
Emotional distress study for newly treated metastatic breast cancer
This trial studies emotional distress in people with metastatic breast cancer who have not yet received treatment for their advanced disease. It explores how different standard first-line therapies affect emotional well-being.
AnconaAges 18 years+ - NCT06983691Recruiting
Navigation help for HER2+ breast cancer patients on tucatinib
This trial tests a patient navigation program to support women with HER2-positive metastatic breast cancer who are being treated with the combination of tucatinib, capecitabine, and trastuzumab. It aims to make your care journey easier and more guided.
Durham, North CarolinaAges 18 years+ - NCT06943313Enrolling by invitation
Breast cancer PET/CT imaging with a new tracer
This trial tests a new imaging agent (68Ga-pAKTi) that may help doctors see breast cancer cells with a PET/CT scan. It is for people with a specific genetic change in their tumor, and who have not yet had surgery to remove the cancer.
ShanghaiAges 18 years+ - NCT06927895Recruiting
Education program for HER2 breast cancer patients
This study is testing whether an educational program helps people with HER2 breast cancer learn more about their treatment and manage side effects. Participants will have virtual visits and watch online training videos.
New York, New YorkAges 18 years+ - NCT06930859Recruiting
Study of Ribociclib for HR+ HER2-negative breast cancer in Russia
This study looks at how well ribociclib works when given with hormone therapy after surgery for certain types of breast cancer. It aims to understand real-world benefits and safety for patients in Russia.
Sochi, Russian FederationAges 18–99 - NCT06828614Enrolling by invitation
Barriers to exercise in breast cancer patients
This study looks at the challenges women with breast cancer face when trying to exercise before, during, and after chemotherapy. It aims to understand what gets in the way so that better support can be offered.
ValenciaAges 18–65 - NCT06797531Recruiting
Ribociclib Real-World Study in Early Breast Cancer
This study observes people with early-stage hormone receptor positive, HER2-negative breast cancer who are taking ribociclib (Kisqali) with hormone therapy after surgery. It aims to see how well the treatment works and how safe it is in real life.
RiyadhAges 18–99 - NCT05181033RecruitingPhase 2
Lenvatinib plus letrozole versus fulvestrant for metastatic breast cancer
This Phase 2 study compares a combination medicine (lenvatinib plus letrozole) against fulvestrant to treat metastatic estrogen-receptor positive, HER2-negative breast cancer after the cancer has grown despite hormone therapy plus a CDK4/6 inhibitor. It may help by finding a more effective treatment option after your first lines have stopped working.
SingaporeAges 18–99 - NCT06646263Enrolling by invitation
Immune response study for triple-negative breast cancer
This study looks at how your immune system responds to triple-negative breast cancer. It will test your blood or tissue to learn more about your body's natural defenses against the cancer.
Thessaloniki, ThessalonikiAges Any age - NCT06629896Recruiting
Comparing contrast mammogram vs MRI for high-risk breast cancer surveillance
This trial compares two advanced imaging methods—contrast-enhanced mammography and MRI—to see which is better for detecting breast cancer early in women at high risk. If you are at high risk and have not had breast cancer before, this study could help guide your future screening.
Reggio Emilia, Italy/Reggio EmiliaAges 35–60 - NCT06551220Recruiting
T-DXd for advanced breast cancer with various HER2 levels
This study looks at how well the drug T-DXd (Enhertu) works against breast cancer that has spread or can't be removed with surgery. It includes patients with any level of HER2 protein, so it might be an option even if your cancer has low HER2.
New Haven, ConnecticutAges 18–80 - NCT06543992RecruitingPhase 2
Chemotherapy for breast cancer that spread to the brain lining
This trial tests a combination of two chemotherapy drugs (thiotepa and methotrexate) given directly into the fluid around your brain and spine through a small implanted device. It aims to treat breast cancer that has spread to the lining of the brain or spinal cord.
Nanjing, JiangsuAges 18–75 - NCT06230055RecruitingPhase 4
Chemotherapy for breast cancer that has spread to the spinal fluid
This trial tests a chemotherapy drug given directly into the spinal fluid for people with HER2-negative breast cancer that has spread to the lining of the brain and spinal cord (called leptomeningeal metastasis). It may help when standard treatments have stopped working or caused too many side effects.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT05933395RecruitingPhase 2
Targeted treatment for ER+ breast cancer after CDK4/6 therapy
This Phase 2 study tests a genetically guided treatment plan for ER-positive breast cancer that has progressed after CDK4/6 therapy. It may help by matching treatment to tumor genetic changes.
Lebanon, New HampshireAges 18 years+ - NCT05878314Recruiting
Testing how hormones and tumor markers guide breast cancer treatment
This study looks at how planned hormone (endocrine) treatment, the menstrual cycle, and lab markers from the tumor may help doctors choose the best treatment for early-stage, hormone-receptor–positive, HER2-negative breast cancer. It may help personalize decisions, including what to do before surgery.
TübingenAges 18 years+ - NCT05901428RecruitingPhase 3
Check if two breast cancer treatments work better after surgery
This trial compares two treatment approaches in people with high-risk hormone-positive, HER2-negative breast cancer that has spread to certain lymph nodes. It looks at which option works best to lower cancer returning and to control the disease after surgery and initial chemotherapy.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT05856773RecruitingPhase 3
Comparing two proton therapy schedules for breast cancer
This trial compares two ways of giving proton therapy to the breast or chest wall and nearby lymph nodes after surgery. The goal is to see if a shorter course of treatment works just as well as the standard longer course, while possibly reducing side effects.
Scottsdale, ArizonaAges 19 years+ - NCT05646862RecruitingPhase 3
Comparing two treatments for advanced breast cancer with a PIK3CA mutation
This trial tests whether a new drug combo (inavolisib plus fulvestrant) works better than an existing one (alpelisib plus fulvestrant) for people with a specific type of advanced breast cancer that has a PIK3CA mutation. It aims to find a treatment that may help control the cancer longer.
Greenbrae, CaliforniaAges 18 years+ - NCT02610439Recruiting
Genetic testing to find causes of paclitaxel nerve damage
This study uses genetic tests on blood DNA to look for differences that may explain why some people develop nerve pain (peripheral neuropathy) from paclitaxel used for breast cancer. It compares people who got significant neuropathy during treatment with people who did not get neuropathy after completing paclitaxel.
Boston, MassachusettsAges Any age - NCT05400941Enrolling by invitation
Breast cancer follow-up support in primary care
This study looks at how breast cancer follow-up care can be better done in primary care clinics. It may help by improving care check-ins and support for people who have had breast cancer and for clinic staff involved in that care.
New Brunswick, New JerseyAges 21 years+ - NCT06195306RecruitingPhase 2
Low dose tamoxifen and omega-3 for breast cancer prevention
This study tests whether low-dose tamoxifen (a breast cancer prevention drug) or omega-3 supplements can lower breast cancer risk in postmenopausal women who are overweight and have a higher chance of getting the disease. The study lasts about 6 months and involves blood draws and a breast fluid test to see how the treatment affects breast cells.
Kansas City, KansasAges 45–74 - NCT03897270Recruiting
Breast cancer or healthy women for new breast imaging
This study tests a new way to look at the breast using photoacoustic imaging, alongside a breast MRI. It may help researchers see breast masses more clearly, even though it’s mainly for measuring how well the imaging works.
Buffalo, New YorkAges 18 years+
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Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,417 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.