Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,473 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06677879RecruitingPhase 2
Proton vs photon radiation for left-sided breast cancer
This study is comparing two types of radiation therapy—proton therapy and standard photon therapy—for people with left-sided breast cancer who need radiation after surgery. The goal is to find out which method best protects the heart while effectively treating the cancer.
ShanghaiAges 18–80 - NCT06677944RecruitingPhase 2
Radiation before surgery for early-stage breast cancer
This trial tests giving radiation to the tumor area before surgery for women with early-stage, hormone-sensitive breast cancer. The idea is to see if giving radiation first can help protect healthy tissue while still being effective.
SeoulAges 45 years+ - NCT06678048RecruitingPhase 2
Arsenous acid for hard-to-treat triple-negative breast cancer
This trial tests a medicine called arsenous acid for people with triple-negative breast cancer that has not responded to at least two prior treatments. If you join, you will get arsenous acid plus one of four chemotherapy drugs to see if the combination can shrink tumors.
Guangzhou, GuangdongAges 18–75 - NCT06678269RecruitingPhase 1
Abemaciclib and radiation for metastatic breast cancer
This trial tests whether a targeted therapy (abemaciclib) combined with focused radiation (SBRT) to a bone tumor can help people with advanced breast cancer. It is for patients whose cancer is hormone receptor positive and HER2 negative, and who will continue abemaciclib after radiation.
Basking Ridge, New JerseyAges 18 years+ - NCT06681064Recruiting
Tracking breast cancer changes during pre-surgery treatment
This study looks at how breast cancer changes while you are receiving chemotherapy or targeted therapy before surgery. The goal is to better understand which treatments work best for different types of breast cancer.
LondonAges 18 years+ - NCT06681233Recruiting
Cone-beam CT for guiding radiation therapy in cancer patients
This study tests whether a special X-ray called cone-beam CT (CBCT) can help guide radiation therapy more precisely for different types of cancer. If you are already scheduled for radiation and use CBCT as part of your care, you may be able to join.
Columbus, OhioAges 18 years+ - NCT06690645Recruiting
Stress and breast cancer treatment response
This trial studies how psychological stress might affect the success of pre-surgery breast cancer treatments (neoadjuvant therapy). If you are about to start treatment and have never had cancer therapy before, this study could help doctors understand your response better.
Shenyang, LiaoningAges 18 years+ - NCT06694519Recruiting
Radiofrequency and exercise for pelvic floor issues after breast cancer
This trial tests whether radiofrequency therapy combined with exercise can help with pelvic floor problems like pain, urgency, or incontinence that some women have after breast cancer treatment.
Elche, Spain / ValenciaAges 18 years+ - NCT06697938Recruiting
Chemo plus radiation vs. chemo alone for locally advanced breast cancer
This trial compares two treatments for locally advanced breast cancer: chemotherapy before surgery plus radiation, versus chemotherapy before surgery alone. The goal is to see which approach works better for this specific type of cancer.
Chengdu, SichuanAges 18–70 - NCT06698679Recruiting
Plasma markers and breast cancer risk & treatment
This study looks at substances in your blood (metabolites) to see if they are linked to breast cancer risk, how well treatment works, and long-term outcomes. It has three groups: women without breast cancer, newly diagnosed patients getting standard therapy, and those who have finished treatment.
Shenyang, LiaoningAges 18 years+ - NCT05941520RecruitingPhase 2
Acolbifene vs low-dose tamoxifen to prevent breast cancer
This Phase 2 trial compares acolbifene and low-dose tamoxifen to see which better lowers breast cancer risk in premenopausal women at high risk. You would be followed with health visits, blood tests, and a breast tissue sampling procedure.
Duarte, CaliforniaAges 35 years+ - NCT04968964Recruiting
Monitoring test for CDK4/6 drugs in metastatic breast cancer
This study follows people with hormone receptor–positive, HER2-negative metastatic breast cancer who are taking CDK4/6 inhibitor treatment (with or without an added blood test called DiviTum®). The goal is to see how well the standard treatment is working and whether DiviTum® (a serum TK1 activity test) can help guide monitoring.
St Louis, MissouriAges 18 years+ - NCT06715826RecruitingPhase 1/Phase 2
Imaging breast cancer with a targeted radioactive tracer
This study is testing a new imaging method that uses a radioactive tracer to find breast cancer cells. It may help doctors see the cancer more clearly.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT06718010Recruiting
Blood markers and breast cancer treatment results
This study looks at how age-related changes in your blood might affect how well your breast cancer treatment works. It includes people with hormone receptor-positive, HER2-negative breast cancer that has not spread to distant organs.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT06721065Recruiting
Study of interpretation services for breast cancer patients
This study tests different ways of providing language interpretation during breast cancer or gastrointestinal cancer visits at MSK. It aims to improve communication for patients who prefer Spanish or Mandarin and have limited English proficiency.
Basking Ridge, New JerseyAges 18 years+ - NCT06723899Recruiting
Work rehabilitation for women with breast cancer
This study tests a six-week online program to help women with breast cancer return to work after completing their cancer treatments (except hormone therapy). The program focuses on rebuilding work skills and confidence.
GalwayAges 18–70 - NCT06725940Recruiting
PET scan to check treatment response in breast cancer
This trial uses a special PET scan to see how well your breast cancer is responding to neoadjuvant therapy (treatment given before surgery). The goal is to help doctors personalize your care by checking if the cancer is shrinking.
ShanghaiAges 18–65 - NCT06727227Recruiting
Study of Enhertu for HER2-low breast cancer
This study looks at how well the drug Enhertu works for patients with HER2-low breast cancer that has spread. If you are already planning to start Enhertu, researchers will collect data from your regular care to learn more about its effectiveness.
Panagyurishte, PazardzhikAges 18 years+ - NCT06727773RecruitingPhase 2
Memantine and exercise to protect thinking during chemo for breast cancer
This study tests whether a medicine called memantine combined with a structured exercise program can help protect your thinking and memory during chemotherapy for breast cancer. It may also help understand how these treatments work in the body.
Chapel Hill, North CarolinaAges 18 years+ - NCT06728527Recruiting
Partial breast reconstruction with chest wall flap
This trial tests a specific type of partial breast reconstruction called a chest wall perforator flap. It's for women who previously had a lumpectomy and now want to improve the shape of their breast.
Cambridge, CambridgeshireAges 18 years+ - NCT06729684Recruiting
Digital health program for breast cancer side effects
This study is testing a personalized digital health program to help breast cancer survivors manage side effects. It uses a smartphone app to track symptoms and offer support.
Seoul, Republic of KoreaAges 18–65 - NCT06732336RecruitingPhase 1/Phase 2
PET scan for HER2-low breast cancer
This trial uses a special PET scan to see if your breast cancer has low levels of a protein called HER2. This could help doctors choose the right treatment for you.
Sherbrooke, QuebecAges 18 years+ - NCT06738459Recruiting
Matching lymph node tests in breast cancer
This study looks back at past MRI scans and lymph node biopsies or surgeries in people with breast cancer to better understand how cancer spreads to the lymph nodes. If you had these tests as part of your care, your data might help improve future treatment decisions.
VillachAges 18 years+ - NCT06739655Recruiting
Radiation before surgery with breast reconstruction
This trial tests whether giving radiation therapy before surgery (instead of after) is safe and effective for women with breast cancer who also want immediate breast reconstruction. It could help avoid the need for a second surgery and improve recovery.
Edegem, AntwerpenAges 18 years+
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Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,473 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.