Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,417 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT04529044RecruitingPhase 2
177Lu-DOTATATE for advanced breast cancer with targeted receptors
This Phase 2 trial tests whether 177Lu-DOTATATE can slow or shrink stage IV or recurrent breast cancer. It targets tumor “receptors” found on scans, using a radioactive medicine that delivers radiation directly to cancer cells.
Portland, OregonAges 18–100 - NCT04501419Recruiting
Mobile ultrasound test to help diagnose breast cancer
This study checks whether a tablet-based ultrasound can find breast lumps that look suspicious for cancer. If it works well, it could help diagnose breast cancer faster in Nigeria where patients may need a biopsy or surgery next.
Ile-IfeAges 18 years+ - NCT04521764RecruitingPhase 1
Vaccine for Metastatic Breast Cancer
This trial tests a vaccine (MV-s-NAP) that is injected directly into a tumor to stimulate your immune system against breast cancer. It is for people with metastatic breast cancer that has spread despite prior treatments.
Rochester, MinnesotaAges 18 years+ - NCT04488614Enrolling by invitation
Biobank study for early-stage breast cancer samples
This study collects and stores biological samples (like tissue or blood) from people with early-stage breast cancer to help future research. It’s mainly for people with a specific type of early breast cancer called high-grade DCIS.
Stavanger, RogalandAges 18–85 - 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+ - 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 - NCT04329065RecruitingPhase 2
Vaccine with targeted breast cancer drugs before surgery
This Phase 2 trial tests whether adding a cancer vaccine (with GM-CSF) to standard HER2-targeted chemotherapy before surgery improves treatment outcomes for HER2-positive breast cancer. If you join, you’ll receive planned medicine before surgery to treat the tumor, then continue with the study schedule.
Seattle, WashingtonAges 18 years+ - NCT04368702Recruiting
MRI-guided radiation for people needing radiation for cancer
This study tests whether radiation given with help from MRI (a type of scan) can better treat cancers that need radiation. You may be eligible if your cancer is confirmed and you can safely have MRI scans.
Boston, MassachusettsAges 18 years+ - NCT04354064Recruiting
Blood DNA test to see early treatment response in solid tumors
This study looks at circulating tumor DNA, which is tiny bits of DNA found in blood, to help assess how solid tumors are responding early. It uses blood samples from healthy adults who are willing to donate.
St Louis, MissouriAges 18 years+ - NCT04362826Recruiting
Probiotic supplement study for breast cancer patients
This study tests whether taking a probiotic supplement affects the bacteria and fungi in your gut, which may be linked to your breast cancer. You'll take a daily probiotic and have your diet and activity stay the same, to see if it helps your body respond to treatment.
Cleveland, OhioAges 18–65 - NCT04360330Recruiting
MRI study in early breast cancer with specific lab markers
This study tests selected treatment decisions for women with early-stage breast cancer that has certain lab test results. It may help researchers better match care using MRI and tumor marker information.
Miami, FloridaAges 50 years+ - NCT04348747RecruitingPhase 2
Vaccine plus pembrolizumab for breast cancer in the brain
This trial studies whether a personalized immune-cell vaccine (dendritic cell vaccine) combined with pembrolizumab can help control brain metastases from certain types of breast cancer. It may help your immune system better recognize and attack cancer cells in the brain.
Tampa, FloridaAges 18 years+ - NCT04203849Enrolling by invitation
Study of breast cancer patients getting radiotherapy
This study follows breast cancer patients who are scheduled to receive radiotherapy at a National Cancer Center in Korea. By collecting information during and after treatment, researchers hope to better understand how patients do over time.
Goyang-si, Gyeonggi-doAges 20 years+ - NCT04230109RecruitingPhase 2
Sacituzumab Govitecan for newly diagnosed TNBC
This trial tests a drug called sacituzumab govitecan for people with newly diagnosed triple-negative breast cancer (TNBC) that hasn't been treated yet. The drug targets cancer cells directly to try to stop them from growing.
Boston, MassachusettsAges 18 years+ - NCT04234386Recruiting
Short-course targeted radiation for early breast cancer
This trial tests a radiation plan called GammaPod to treat early breast cancer with precise targeting. It may help patients by delivering the treatment in a more focused way, while checking safety and tumor control in the smallest, well-defined cancers.
Baltimore, MarylandAges 45 years+ - NCT04150042RecruitingPhase 1
Test of chemotherapy plus your own stem cells for metastatic cancer
This Phase 1 trial tests a treatment approach using standard chemotherapy along with stem cells taken from you to treat metastatic pancreatic or breast cancer. It is mainly designed to check safety and find the best way to give the treatment, and it may offer an option for people whose cancer has spread.
Boston, MassachusettsAges 18 years+ - NCT04098640Enrolling by invitation
Testing tumor DNA in younger people with metastatic breast cancer
This study looks at your tumor’s molecular (DNA/biologic) features to better understand metastatic breast cancer in people under 50. You may help researchers by providing tissue samples (biopsies) for lab testing.
Seoul, SeoulAges 19–50 - NCT04133077Recruiting
Biobank study using tumor tissue to grow patient tumor models
This study takes small samples of your breast tumor tissue after (or during) treatment and grows them in lab animals to better study breast cancer. It may help researchers test future ideas for treating aggressive breast cancer types like triple-negative or Luminal B.
Clermont-Ferrand, Puy-de-DômeAges 18 years+ - NCT04090567RecruitingPhase 2
Olaparib with two partners for advanced BRCA breast cancer
This trial tests whether the drug olaparib works better when combined with cediranib or AZD6738 in people with advanced or metastatic BRCA (inherited) breast cancer. It may help shrink tumors or slow cancer growth after prior treatment with a PARP inhibitor.
Houston, TexasAges 18 years+ - NCT04084730RecruitingPhase 2
3-day radiation after breast-conserving surgery for certain breast cancers
This trial tests whether a shorter, 3-day course of partial breast radiation after surgery works as well as standard radiation for women with early-stage breast cancer. It may help reduce time in treatment while aiming to keep cancer from coming back in the treated breast area.
Norwalk, ConnecticutAges 45 years+ - NCT04038619RecruitingPhase 1
Fecal transplant for immune-therapy diarrhea or bowel inflammation
This early-phase study tests whether stool/fecal microbiota transplant (a fecal transplant) can help people who develop significant diarrhea or colitis after immune-checkpoint therapy. It aims to reduce bowel inflammation and improve symptoms, while carefully checking for infections.
Houston, TexasAges 18 years+ - NCT04022616Recruiting
Study immune cells in breast cancer patients
This study looks at how certain immune cells behave in people with breast cancer. It may help researchers understand the disease and how the immune system affects it.
Columbus, OhioAges 18 years+ - NCT03941756Recruiting
Lymph bypass before underarm node surgery to prevent swelling
This study looks at whether adding a lymph “bypass” procedure before underarm lymph node surgery can lower the chance of arm or chest swelling (lymphedema) after cancer treatment. It compares people having lymph node surgery for breast cancer with plans for radiation, and a melanoma comparison group.
Houston, TexasAges 18 years+ - NCT03936478RecruitingPhase 2
MRI-guided partial breast radiation in three short treatments
This study tests a faster, targeted type of radiation for early breast cancer, using real-time MRI to help plan and guide treatment. It may help deliver the same cancer-fighting effect while limiting radiation to the rest of the breast.
Madison, WisconsinAges 40 years+
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Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,417 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.