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
- NCT04923542RecruitingPhase 1/Phase 2
Targeted drug plus focused brain radiation for breast cancer
This study tests whether abemaciclib (a targeted pill) given with focused radiation to brain tumors can control hormone receptor–positive, HER2-negative breast cancer in the brain. It’s designed to see if the combination helps shrink or slow the growth of brain metastases while keeping side effects manageable.
Tampa, FloridaAges 18 years+ - NCT04893109RecruitingPhase 2
Study compares two HER2 breast cancer treatments after surgery
This Phase 2 study tests two different medicines given after breast surgery to reduce the risk of cancer coming back. It is only for people with early-stage HER2-positive breast cancer with limited or no lymph node spread.
San Francisco, CaliforniaAges 18 years+ - NCT04899908RecruitingPhase 2
Brain radiation with or without gadolinium nanoparticles for brain metastases
This trial tests whether adding tiny gadolinium-containing nanoparticles to standard brain radiation can better control brain metastases from certain cancers. It is for people with tumors that have grown after immunotherapy, are from certain cancers (like melanoma, GI, or HER2+ breast), are cystic, are large, or have come back after prior radiation.
Boston, MassachusettsAges 18 years+ - NCT04824014RecruitingPhase 2
PET imaging for ER+ advanced breast cancer
This trial uses a special PET scan called 4FMFES-PET to take detailed pictures of ER-positive breast cancer that has spread. It helps doctors see where the cancer is and how active it is, which may guide treatment decisions.
Sherbrooke, QuebecAges 18 years+ - NCT04794075Recruiting
Nursing and education support for women on hormone breast therapy
This trial tests a structured nursing and education program to support people with non-metastatic breast cancer who take hormone-blocking treatment. It may help you manage side effects and stay supported during follow-up, using online questionnaires and scheduled sessions.
Bourg-en-BresseAges 18–75 - NCT04771871RecruitingPhase 2
Study tiny RNA changes in triple-negative breast cancer
This trial studies patterns of microRNA (tiny gene-regulating molecules) in women with triple-negative breast cancer. By comparing these microRNA profiles, the study hopes to better understand the disease and potentially guide future treatment choices.
Ile-Ife, OshunAges 18–70 - NCT04802759RecruitingPhase 1/Phase 2
Testing drug combinations for recurrent or advanced ER-positive breast cancer
This early-phase trial tests several combinations of cancer medicines to slow or control ER-positive breast cancer that has returned or progressed. It also checks safety and whether tumor or blood biomarkers can help match the right treatment to the right person.
Duarte, CaliforniaAges 18 years+ - NCT04740697Recruiting
Complementary therapies to help people stay on tamoxifen
This study looks at whether adding alternative or complementary supports can improve how well people stick with tamoxifen treatment for early hormone-related breast cancer. If it helps adherence, it may help people benefit more reliably from their prescribed therapy.
ToulouseAges 1.5 years+ - NCT04692818Recruiting
3D ultrasound imaging for women with a breast lump
This study tests how well a new 3D ultrasound method can “see” a solid breast lump that is being biopsied. It may help doctors get clearer images to guide diagnosis, especially alongside a standard biopsy.
Rochester, MinnesotaAges 18 years+ - NCT04638725Recruiting
Genetics study to find why HER2 breast cancer treatment varies
This study looks at genetic factors to understand why some people’s HER2-positive breast cancer responds better—or has more side effects—after treatment. Your info and possible past treatment history may help researchers improve how HER2 treatment is chosen and managed.
StrasbourgAges 18 years+ - NCT04680715RecruitingPhase 2
Tested radiation before and after breast surgery in older women
This Phase 2 trial looks at a specific radiation timing and technique around the time of breast-conserving surgery. It may help reduce the chance the cancer comes back in selected older patients with certain early-stage, hormone-positive, HER2-negative breast cancers.
Clermont-FerrandAges 65 years+ - NCT04677816RecruitingPhase 2
Vitamin D for a better response to chemotherapy
This study tests whether taking high-dose vitamin D before and during chemotherapy helps eliminate more cancer before surgery in people with triple-negative breast cancer who are low in vitamin D.
Winston-Salem, North CarolinaAges 18 years+ - NCT04517266Recruiting
Testing less radiation to the inner breast area
This trial studies whether some patients with early-stage breast cancer can safely skip a specific part of radiation to the inner chest (called internal mammary irradiation). It may reduce radiation side effects while still aiming to prevent the cancer from coming back.
Shanghai, Shanghai MunicipalityAges 18–80 - NCT04523857RecruitingPhase 2
Abemaciclib and hydroxychloroquine after breast cancer relapse risk
This Phase 2 trial tests whether abemaciclib plus hydroxychloroquine can kill tiny “leftover” cancer cells in the bone marrow after standard breast cancer treatment. It may help lower the chance of cancer coming back by targeting minimal residual disease.
Philadelphia, PennsylvaniaAges 18 years+ - NCT04494945Recruiting
Help for people with inherited cancer risk genes
This study helps identify people who may have an inherited cancer risk and checks how best to support them. Depending on the group, you may only fill out surveys, or you may also create an app account and possibly provide a DNA sample.
Portland, OregonAges 18 years+ - NCT04562623Recruiting
Studying immune changes in operable breast and ovarian cancers
This study looks at how your immune system behaves around the time of planned surgery for certain breast or ovarian cancers. It may help researchers understand what immune changes happen and how they relate to your cancer.
Lyon, FranceAges 18 years+ - NCT04220970Recruiting
Breast implant lymphoma patient registry
This study is a registry that collects information from adults diagnosed with lymphoma that may be linked to breast implants. It helps researchers understand the condition better and may guide future care.
BrugesAges 18 years+ - NCT04458532Recruiting
Exercise program to boost heart health after early breast cancer
This trial studies whether a structured exercise program can improve cardiovascular (heart and blood vessel) health in post-menopausal women after early-stage breast cancer treatment. It specifically targets women who have trouble with exercise and have completed cancer treatment within the last 1 to 5 years.
Hartford, ConnecticutAges 21–80 - NCT04457895Recruiting
Yoga and physical therapy program for hormone therapy breast cancer pain
This trial studies whether a combined physical therapy, yoga, and patient education program can reduce pain in people with non-metastatic breast cancer who are taking hormone therapy. It may help with pain and day-to-day comfort while you continue hormone treatment.
Libourne, AquitaineAges 18–99 - NCT04469296Recruiting
Diet changes before surgery for hormone-receptor breast cancer
This trial tests whether changing your diet before your breast surgery can help people with early, hormone-receptor (ER/PR+) breast cancer. It focuses on patients who have not started treatment yet and want to keep surgery as the main treatment.
Montpellier, HeraultAges 18–80 - NCT04468061RecruitingPhase 2
Study chemo drug plus immunotherapy for metastatic triple-negative breast cancer
This trial tests sacituzumab govitecan (an antibody-drug medicine) with or without pembrolizumab (an immune-system therapy) in people with metastatic triple-negative breast cancer. It may help by shrinking tumors and improving immune control, especially for patients with specific tumor marker results.
Stamford, ConnecticutAges 18 years+ - NCT04434040RecruitingPhase 2
Atezolizumab and sacituzumab to prevent breast cancer return
This trial tests two medicines after surgery and chemotherapy to help lower the risk that triple-negative breast cancer comes back. It’s for people whose cancer still showed “residual” invasive disease after neoadjuvant (before-surgery) chemotherapy, and whose blood test shows traces of tumor DNA.
San Francisco, CaliforniaAges 18 years+ - NCT04400695RecruitingPhase 3
Targeted drug for breast cancer with low HER2 levels
This trial tests a new drug that targets breast cancer cells with low levels of the HER2 protein. It may offer a new treatment option for patients whose cancer has spread and not responded well to previous therapies.
Beijing, Beijing MunicipalityAges 18–70 - NCT04373655Recruiting
Lymph node surgery after chemotherapy for invasive breast cancer
This trial studies how doctors should operate on lymph nodes after you finish chemotherapy given before surgery. It may help improve treatment planning for people whose breast cancer has spread to nearby lymph nodes, but not to distant organs.
Esslingen am NeckarAges 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.