Clinical trials
Breast clinical trials
Below are recruiting breast clinical trials, each written for real people, not researchers. We’re tracking 2,627 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04137653RecruitingPhase 3
New pre-surgery drug choice for triple-negative breast cancer
This trial tests which chemotherapy drug works better before surgery (neoadjuvant therapy) for triple-negative breast cancer that has spread to underarm lymph nodes. It compares two forms of paclitaxel given by random assignment to see which option may shrink the tumor more effectively and improve outcomes.
Shenyang, LiaoningAges 18–70 - NCT04476485Recruiting
Predicting breast cancer recurrence after extended hormone therapy
This trial looks at factors that may predict whether hormone receptor–positive breast cancer will come back after you’ve already completed 5 years of hormone (endocrine) therapy. It may help identify who benefits most from longer treatment and follow-up.
Harbin, HeilongjiangAges 18–70 - NCT05057598Recruiting
Online study for women with breast cancer experiences
This study asks women with breast cancer to take part in an online, before-and-after research project. It may help researchers understand your experiences and improve support for people living with breast cancer, including those with relapse or spread to other parts of the body.
Milan, MIAges 18–90 - NCT05059379RecruitingPhase 3
Different radiation fields after breast cancer surgery
This trial compares two ways of giving radiation to lymph node areas near the collarbone after surgery for invasive breast cancer. It aims to see which radiation approach works better and is safer for preventing cancer returning in these lymph nodes.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT02535221RecruitingPhase 3
Hormone treatment vs chemotherapy before breast surgery
This Phase 3 trial compares hormone-based treatment versus chemotherapy given before surgery in people who are premenopausal and have hormone-receptor positive, HER2-negative breast cancer. It looks to see which approach works better to control the cancer before the breast operation.
BeijingAges 35–55 - NCT04480203Recruiting
Digital coping tools after new breast cancer diagnosis
This trial tests two online programs designed to help people cope after being diagnosed with breast cancer. It may help you manage stress and emotions during treatment or recovery.
OsloAges 20–69 - NCT05292742RecruitingPhase 2
Continue targeted breast cancer therapy or switch to a new combo
This Phase 2 study compares two treatment plans after breast surgery when cancer did not fully disappear before surgery. It tests whether adding trastuzumab, pyrotinib, and capecitabine works better than continuing the original targeted therapy.
Fuzhou, FujianAges 18–75 - NCT04159818RecruitingPhase 2
Adding immune treatments to improve checkpoint drug response in TNBC
This Phase 2 trial tests strategies meant to “prime” the immune system so that immune checkpoint medicines may work better in people with triple-negative breast cancer that has spread (or can’t be fully cured). You might be considered if your cancer has measurable areas that can be biopsied and you meet specific health and prior-treatment rules.
AmsterdamAges 18 years+ - NCT05326295Recruiting
Breast cancer study using tumor cells in blood
This trial checks whether a blood test that looks at tumor cells can help guide treatment for people with breast cancer. If you join, your care team will follow your responses over time to see if this “phenotype surveillance” approach is useful.
Changsha, HunanAges 18–75 - NCT05314114Recruiting
Skipping underarm surgery for some breast cancers after chemotherapy
This trial studies whether it’s safe to skip removing underarm lymph nodes (axillary surgery) for people with certain breast cancers after they respond to “NACT,” a type of chemotherapy. It also uses planned breast-conserving surgery and whole-breast radiation to see if outcomes stay similar while reducing surgery-related side effects.
Beijing, Beijing MunicipalityAges 18–70 - NCT05345860Recruiting
Using MRD results to guide extra treatment after breast surgery
This trial checks “MRD” (tiny leftover cancer signals after surgery) to help decide the best additional treatment for early-stage breast cancer. It may help tailor therapy so you get the most useful medicines while avoiding unnecessary treatment.
Beijing, Beijing MunicipalityAges 18 years+ - NCT05334459Recruiting
Radiation and medicines after surgery for new metastatic breast cancer
This trial looks at giving radiation and anti-cancer medicines after surgery to treat newly diagnosed (de novo) metastatic breast cancer. It may help patients by improving local control of the breast area while also treating cancer throughout the body.
AnkaraAges 18–80 - NCT04065321Recruiting
Blood test for tumor cells in certain early breast cancers
This trial looks at a blood test that may detect “circulating tumor cells” (cancer cells that can travel in the bloodstream) in people with a specific type of breast cancer. It may help doctors better track the disease and guide treatment for people whose tumors have certain hormone and growth-factor features.
Shenyang, LiaoningAges 18–60 - NCT05420454RecruitingPhase 4
Neoadjuvant treatment for breast cancer before surgery
This trial tests a treatment given before breast surgery to shrink breast cancer and improve outcomes based on your tumor type. Your eligibility depends on tumor size/stage, hormone and HER2 markers, and overall health checks.
Hangzhou, ZhejiangAges 18 years+ - NCT04079049RecruitingPhase 3
Local treatment for breast cancer spread to the liver
This study tests a local (targeted) approach for breast cancer that has spread to the liver. It looks at whether treating liver metastases with planned liver surgery, along with standard cancer treatment before and after, can improve outcomes.
UmeåAges 18 years+ - NCT03829553RecruitingPhase 3
Radiation to breast lymph nodes versus standard breast cancer care
This Phase 3 trial tests whether a shorter, more focused radiation treatment to the regional lymph nodes works as well as the current standard approach for certain breast cancers. It may help patients by potentially improving treatment efficiency while keeping cancer control effective.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT05420467RecruitingPhase 4
Trial of add-on breast cancer treatment after surgery
This Phase 4 study tests an additional (adjuvant) treatment for breast cancer after surgery and standard follow-up care. It may help lower the chance the cancer comes back, but you must match specific tumor and body-chemistry requirements to join.
Hangzhou, ZhejiangAges 18 years+ - NCT05305092Recruiting
Study of memory and thinking in early breast cancer
This study checks how breast cancer affects memory and thinking before other treatments start. It may help doctors better understand cognitive changes and who is most at risk.
Xi'an, ShaanxiAges Any age - NCT04985032Recruiting
Radiation after lumpectomy for selected breast tumors
This trial tests a shorter, focused type of radiation (APBI using SBRT) after lumpectomy for certain early breast cancers. It may help by targeting only the part of the breast where the tumor was, rather than treating the whole breast, while keeping safety and cancer control in mind.
Stuart, FloridaAges 50–100 - NCT04698252RecruitingPhase 2
Local treatment for ER/PR-positive limited spread breast cancer
This Phase 2 study tests whether treating a small number of metastatic spots with a local approach (like targeted radiation, surgery, or ablation) can help people with ER/PR-positive breast cancer. It aims to help when the cancer has spread only to a few areas and has not significantly worsened after initial whole-body treatment.
São Paulo, São PauloAges 18 years+ - NCT05491395Recruiting
Radiation after mastectomy with breast implant reconstruction
This trial studies a radiation schedule given after breast cancer surgery when your breast was rebuilt right away with a prosthesis (implant or similar). It aims to see whether this “hypofractionated” (fewer, larger treatment sessions) radiation approach is appropriate for patients who need additional (adjuvant) radiation to reduce recurrence risk.
Barretos, São PauloAges 18 years+ - NCT04486495Recruiting
Minimally invasive lymph node treatment after chemo for node-positive breast cancer
This study looks at a less invasive way to check and treat lymph nodes in the armpit after you receive chemotherapy (and sometimes immunotherapy) before breast surgery. It may help people with cancer that has already spread to armpit lymph nodes by improving how staging and treatment are done.
's-HertogenboschAges 18 years+ - NCT04983121RecruitingPhase 2
Neoadjuvant pyrotinib plus ARX788 for HER2-positive breast cancer
This Phase 2 trial studies whether combining pyrotinib with ARX788 given before surgery can work better and be safe in people with HER2-positive breast cancer. It’s designed for tumors that did not respond well enough to earlier trastuzumab and pertuzumab treatment.
Shenyang, LiaoningAges 18–75 - NCT05263570Recruiting
Real-world treatment planning for stage II–III HR+ HER2+ breast cancer
This trial looks at how well a standard “neoadjuvant” treatment plan works in real-world patients. It is for people newly diagnosed with stage II–III HR+ breast cancer and aims to see whether treatment gives expected outcomes in everyday care.
Shenyang, LiaoningAges 18 years+
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Common questions
- Are there clinical trials for breast?
- Yes. Clin2 currently lists 2,627 recruiting breast 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 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 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.