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
- NCT04293796Recruiting
Skipping breast surgery after complete response
This trial looks at whether some people with breast cancer can safely avoid breast surgery after they respond completely to treatment before surgery. If you have no remaining cancer in the tissue and lymph node tests, this study checks whether the “watch-and-wait” approach is feasible and safe.
Saint PetersburgAges 18–70 - NCT06172478RecruitingPhase 2
HER3-DXd for advanced solid tumors after prior treatment
This trial tests a new targeted drug called HER3-DXd for people with several types of advanced solid tumors that have stopped responding to standard treatments. The drug is an antibody-drug conjugate, designed to deliver chemotherapy directly to cancer cells that have a protein called HER3 on their surface.
Duarte, CaliforniaAges 18 years+ - NCT04669873Recruiting
Partial breast radiation vs whole breast radiation after lumpectomy
This trial studies whether treating only part of the breast with radiation works as well as treating the whole breast in people with early breast cancer after lumpectomy. It may help reduce radiation exposure to healthy tissue, while still controlling the cancer.
São Paulo, São PauloAges 50–90 - NCT06342037RecruitingPhase 2
New immunotherapy options for advanced triple-negative breast cancer
This trial tests two immunotherapy drugs (atezolizumab and tiragolumab) for people with advanced triple-negative breast cancer that has not responded to standard treatments. It aims to see if this combination can shrink or slow the cancer.
Amsterdam, North HollandAges 18 years+ - NCT06903468Recruiting
New cavity marking technique for breast cancer surgery and radiation
This trial tests a new way to mark the area where breast cancer is removed during lumpectomy with oncoplastic reconstruction. The goal is to make follow-up radiation more precise and reduce the need for additional surgeries.
Gainesville, FloridaAges 18 years+ - NCT04273061RecruitingPhase 2
Atezolizumab for tumors that look sensitive on DNA/RNA testing
This Phase 2 study tests atezolizumab, an immunotherapy drug, in people with advanced, incurable solid tumors whose tumor DNA/RNA suggests they may respond. The goal is to see if the treatment works better for patients selected by these lab results.
Vancouver, British ColumbiaAges 18 years+ - NCT05427071Recruiting
Tracking a breast cancer marker to guide lymph node surgery
This study tests a special “marker” technique to help surgeons find affected lymph nodes in the armpit after chemotherapy. It may support more targeted surgery and help avoid unnecessary removal of healthy lymph nodes.
Hong KongAges 18 years+ - NCT05721976Recruiting
Grandmother–daughter lifestyle program for certain cancer survivors
This pilot study tests a supportive program for grandmothers who finished breast, endometrial, or ovarian cancer treatment and their adult daughters. It aims to encourage healthier habits, including physical activity, using phone-based support and Spanish/English materials.
Miami, FloridaAges 21 years+ - NCT05867966Recruiting
Testing a hypnosis-based program for symptom clusters in cancer
This trial studies whether a hypnosis-based approach can help reduce a selected set of troubling symptoms in people who have finished treatment for certain early-stage (non-metastatic) cancers. It aims to understand which symptom patterns improve and how well the intervention works.
LiègeAges 18 years+ - NCT05935384Recruiting
Blood tests to track response to cancer therapy
This study follows how cancer responds to standard (usual) treatment by using blood samples and de-identified health data. It may help researchers understand whether “liquid biopsy” blood testing can reflect how well therapy is working.
Skokie, IllinoisAges 18 years+ - NCT07054723Recruiting
Surviving daily life after breast cancer
This study looks at how breast cancer survivors manage daily life. Researchers want to learn from people who are 40 or older and at least 5 years past their diagnosis. The goal is to better understand what helps people thrive after cancer.
Philadelphia, PennsylvaniaAges 40 years+ - NCT07532434Recruiting
Risk-Reducing Surgery for Hereditary Ovarian Cancer
This study follows women who carry gene mutations that increase ovarian cancer risk to understand how preventive surgery affects their health, quality of life, and peace of mind. Researchers will track your outcomes over 3 years to help inform future treatment decisions for others at similar risk.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07206888Enrolling by invitation
Study to try advanced ultrasound for breast imaging
This study explores a new way to process ultrasound images of the breast. It is for women who have a finding, cyst, mass, or calcifications seen on a mammogram or ultrasound, and it uses a special ultrasound technique that may provide clearer images without extra radiation.
Baltimore, MarylandAges 18 years+ - NCT03815890RecruitingPhase 2
Pre-surgery nivolumab for certain types of breast cancer
This trial tests whether giving nivolumab before surgery (neoadjuvant treatment) can improve outcomes for people with certain resectable breast cancers. It focuses on tumor types linked to immune activity (like triple-negative and specific lab markers).
AmsterdamAges 18 years+ - NCT07330544RecruitingPhase 2
Study of entinostat with anlotinib or fulvestrant for advanced breast cancer
This trial tests adding entinostat (a drug that may help hormone therapy work better) to anlotinib or fulvestrant for people with HR-positive, HER2-negative advanced breast cancer that has worsened after prior hormone therapy and a CDK4/6 inhibitor. It aims to find a new treatment option for those who cannot use chemotherapy yet.
Zhejiang, HangzhouAges 18 years+ - NCT07186296Recruiting
Emerald blood test study for new cancer diagnosis
This study is testing a blood test that looks for signs of lung, breast, colorectal, pancreatic, or ovarian cancer. If you have just been told you might have one of these cancers and haven't started treatment yet, this study may be an option to help learn more about your cancer from a simple blood draw.
Long Beach, CaliforniaAges 45 years+ - NCT05098210RecruitingPhase 1
Personalized vaccine made from your tumor’s new immune targets
This Phase 1 study tests a customized vaccine made from “neo-antigens,” which are new targets found in your tumor. It aims to help your immune system fight certain advanced cancers that have not responded well to prior treatment.
Seattle, WashingtonAges 18 years+ - NCT06127979Recruiting
Hormone therapy before surgery for breast cancer
This study looks at how a hormone-blocking medicine (endocrine therapy) given before surgery affects a marker called Ki67 in your breast cancer cells. The goal is to see if the medicine can slow the growth of the cancer, which may help doctors choose the best treatment for you.
New York, New YorkAges 18 years+ - NCT04278469Recruiting
Study for early breast cancer patients with low-risk genes
This trial studies early, hormone receptor–positive, HER2-negative breast cancer and looks at a group with “high clinical risk” but “low genetic (tumor) risk.” It may help researchers understand which patients may benefit most from treatment decisions guided by genetic tumor testing.
SeoulAges 19–80 - NCT05184790Recruiting
Using imaging during radiation therapy to improve AI planning
This study tests how well an artificial intelligence system can use special X-ray images taken during certain radiation treatments to improve care. You may qualify if you’re having radiation for specific conditions and your treatment center uses the required imaging steps.
Saint Leonards, New South WalesAges 18 years+ - NCT04714463Recruiting
Study on thoughts and body image during breast reconstruction
This study looks at how people’s expectations and body image feelings may affect experiences after breast reconstruction after mastectomy. It may help doctors understand what kinds of support or counseling could make recovery feel better.
GothenburgAges 18 years+ - NCT06555588Recruiting
Supportive talk therapy for advanced cancer symptoms
This study tests a supportive talk therapy program (called Engage) delivered via video calls. It aims to help people with advanced cancer manage tough symptoms like pain, fatigue, and distress and improve daily functioning.
Durham, North CarolinaAges 18 years+ - NCT06350500Recruiting
Patient navigation for breast cancer care barriers
This study helps women with a new breast cancer or DCIS diagnosis who face barriers to care. A patient navigator will work with you to address issues like transportation, insurance, or other needs so you can get the care you need.
Buffalo, New YorkAges 18 years+ - NCT06719206Recruiting
Reducing sitting time during cancer treatment
This study looks at helping people with breast, prostate, or colorectal cancer who are starting or have recently started treatment (like chemo or radiation) to sit less and move more during their treatment. If you are treated at a hospital in Uppsala or Västerås, Sweden, you may be able to join.
UppsalaAges 18 years+
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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.