Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,470 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06042894RecruitingPhase 2
Study of two drugs for advanced HER2-negative breast cancer
This trial tests two experimental drugs, SI-B003 and BL-B01D1 plus SI-B003, for people with HER2-negative breast cancer that has spread or cannot be removed by surgery. It is for those who have tried standard treatments or cannot have them.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT06044623RecruitingPhase 3
Tailoring cancer pill dosing for older adults with breast cancer
This trial is testing whether adjusting the dose of a targeted therapy (CDK 4/6 inhibitor) based on a geriatric assessment can be as effective and safer for people aged 70 and older with advanced hormone receptor-positive, HER2-negative breast cancer. It aims to find the best dose to balance benefits and side effects.
HelsinkiAges 70 years+ - NCT06052488Recruiting
Strength After Breast Cancer
This study tests a strength training program for women who have finished primary treatment for early-stage breast cancer. The goal is to see if it helps improve muscle strength and overall recovery.
Boston, MassachusettsAges 18 years+ - NCT06064812RecruitingPhase 1/Phase 2
Testing a new drug for advanced ER-positive breast cancer
This trial tests an experimental oral drug (FWD1802) for women with a specific type of advanced breast cancer (ER-positive, HER2-negative) that has stopped responding to hormone therapy. It looks at whether the drug can slow or stop cancer growth, especially if you have an ESR1 mutation.
Hefei, AnhuiAges 18 years+ - NCT06072612RecruitingPhase 3
Bria-IMT plus CPI vs standard care for advanced breast cancer
This trial tests a new combination of two immunotherapy drugs (Bria-IMT and a checkpoint inhibitor) against your doctor's choice of standard treatments. It is for people with advanced breast cancer that has spread and who have already tried several prior therapies.
Phoenix, ArizonaAges 18 years+ - NCT06072807RecruitingPhase 4
Brain imaging study for ER+ breast cancer with brain tumors
This trial tests a special PET scan called FES to see if it can detect estrogen receptors in brain metastases. It may help doctors better target treatment for people with ER+ breast cancer that has spread to the brain.
New York, New YorkAges 18 years+ - NCT06075810RecruitingPhase 1
Oral MBQ-167 for advanced breast cancer
This trial tests an experimental oral drug, MBQ-167, for people with advanced breast cancer who have tried other treatments or have no standard options left. The goal is to see if the drug can help slow or stop the cancer.
Beverly Hills, CaliforniaAges 21 years+ - NCT06085742RecruitingPhase 2
CMC chemotherapy for early stage breast cancer
This trial tests a chemotherapy combination (CMC) for people with early-stage, hormone receptor-positive, HER2-negative breast cancer who have a high risk of recurrence. It aims to understand if this oral regimen is effective and tolerable.
Chicago, IllinoisAges 18 years+ - NCT06087120Recruiting
Can a blood test predict breast cancer treatment response?
This study looks at whether a blood test (ctDNA) can help predict how well breast cancer responds to chemotherapy before surgery. It focuses on people with HER2-positive or triple-negative breast cancer that has not spread far.
JakartaAges 18 years+ - NCT06092892RecruitingPhase 2
Upfront targeted lymph node removal for early breast cancer
This trial is for women age 45 and older with early ER-positive breast cancer that has spread to the lymph nodes under the arm. It tests a surgery approach where the main tumor and only a few key lymph nodes (rather than many) are removed.
Los Angeles, CaliforniaAges 45 years+ - NCT06099769RecruitingPhase 2
Testing enzalutamide with or without mifepristone for AR-positive breast cancer
This trial tests if adding the drug mifepristone to the standard antiandrogen enzalutamide works better than enzalutamide alone or chemotherapy for people with a specific type of breast cancer that has androgen receptors. It aims to find a new targeted treatment option for triple-negative or ER-low breast cancer.
Birmingham, AlabamaAges 18 years+ - NCT06104085Recruiting
Imaging test for Trop2 in triple-negative breast cancer
This trial tests a new imaging agent (99mTc-MY6349) to see if it can detect Trop2, a protein found on some breast cancer cells. It may help doctors better see and understand triple-negative breast cancer that has spread.
Beijing, Beijing MunicipalityAges 18–80 - NCT06105749Recruiting
Biennial contrast mammography in women with past breast cancer
This trial tests if contrast-enhanced mammography (CEM) every two years works as well as routine mammograms for women who have had breast cancer. It aims to find a better way to screen for new cancers in this group.
Bethel Park, PennsylvaniaAges 30–79 - NCT06110793RecruitingPhase 1/Phase 2
Study of lenvatinib, pembrolizumab, and fulvestrant for advanced breast cancer
This trial tests a combination of three drugs (lenvatinib, pembrolizumab, and fulvestrant) for people with a certain type of advanced breast cancer that has stopped responding to previous hormone therapy. The goal is to see if this new combination can help shrink or control the cancer.
Basking Ridge, New JerseyAges 18 years+ - NCT06112613Recruiting
Mobile health to help with breast cancer pill-taking
This study uses text messages to help people with metastatic breast cancer remember to take their daily pills and asks about any missed doses. It aims to improve how well patients stick to their CDK4/6 inhibitor medication.
Fairbanks, AlaskaAges 18 years+ - NCT06115486Recruiting
Exercise to improve muscle after breast cancer treatment
This trial tests whether a structured exercise program (called EXERT-BCH) can help improve muscle mass in women who have finished breast cancer treatment. It involves group resistance training sessions and is designed to support recovery and strength.
Pittsburgh, PennsylvaniaAges 20–89 - NCT06116812Recruiting
Laughter yoga and stress reduction for women with breast cancer
This study tests if laughter yoga or mindfulness-based stress reduction helps women with early-stage breast cancer feel less anxious and depressed during chemotherapy. You would join online group sessions from home using your smartphone.
İskenderun, HatayAges 18–60 - NCT06120283RecruitingPhase 1
Testing a new drug for breast cancer and other solid tumors
This trial tests a new oral drug (BGB-43395) alone or with other treatments for people with advanced breast cancer or other solid tumors that depend on CDK4. It aims to find safe doses and see if the drug helps shrink tumors or slow growth.
Denver, ColoradoAges 18 years+ - NCT06126406RecruitingPhase 1
CEA-targeting CAR-T cell therapy for advanced solid tumors
This trial tests a new immune cell therapy (CAR-T) designed to attack cancer cells that make a protein called CEA. It may be an option for people with advanced colorectal, esophageal, gastric, or pancreatic cancer who have already tried at least two standard treatments.
Wuhu, AnhuiAges 18 years+ - NCT06127797Recruiting
MRI surveillance study for breast cancer survivors with dense breasts
This study is testing whether adding an MRI to your regular mammogram can help find any new breast cancers earlier. It is for women who have had breast cancer before and still have dense breast tissue, making mammograms harder to read.
Houston, TexasAges 18 years+ - NCT06129747RecruitingPhase 2
Repeat Lumpectomy and Daily Partial Breast Radiation for Cancer Return
This trial studies a second breast-conserving surgery followed by daily radiation to just the tumor area for people whose breast cancer has returned in the same breast. It aims to see if this approach is safe and effective, potentially avoiding a mastectomy.
Cleveland, OhioAges 19 years+ - NCT06135714RecruitingPhase 3
Targeting limited breast cancer spread with focused therapy
This trial tests whether treating just the few spots where breast cancer has spread (called oligometastases) with radiation or surgery can help control the disease. It is for people whose cancer has spread to 3 or fewer places, each small in size, and who are healthy enough for local treatments.
Tokyo, TokyoAges 18–80 - NCT06144164RecruitingPhase 3
Preventing Lymphedema After Breast Cancer Surgery
This trial tests a comprehensive prevention program to reduce lymphedema—a swelling in the arm—after breast cancer surgery that removes lymph nodes. If you qualify, you'll learn special exercises and care steps to lower your risk.
Basking Ridge, New JerseyAges 18–75 - NCT06144346Recruiting
Radiation for limited breast cancer spread
This trial tests whether treating each spot of cancer that has spread (but only a few spots) with focused radiation can help control breast cancer. It aims to see if this approach can stop the cancer from growing further without needing strong whole-body treatments right away.
CairoAges 18–70
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Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,470 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.