Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,478 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05381038RecruitingPhase 1/Phase 2
Personalized azacitidine combinations for breast or stomach cancer
This Phase 1/2 trial tests different combinations that include azacitidine, chosen based on your tumor’s lab “response markers” and past drug-sensitivity screening. It aims to find safer dosing and see whether these personalized combinations can shrink solid tumors such as breast or stomach cancer.
SingaporeAges 21–99 - NCT05479409RecruitingPhase 2
Radiation before surgery for advanced breast cancer
This trial tests whether giving radiation therapy before surgery helps people with locally advanced breast cancer that hasn't been removed with chemotherapy. It may offer a new option for those who cannot have surgery right away.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT05557877RecruitingPhase 2
Low-dose aspirin to prevent postpartum breast cancer
This study tests whether taking a low dose of aspirin after childbirth can lower the chance of developing breast cancer later. You may be asked to provide blood, urine, and breast tissue samples so researchers can look for changes that could explain why aspirin may help.
Scottsdale, ArizonaAges 18–45 - NCT05689619Recruiting
Silibinin after one brain metastasis surgery for lung or breast cancer
This trial studies silibinin, a natural substance, to help prevent brain metastasis from coming back after surgery. It is for people with lung (NSCLC) or breast cancer who have exactly one small brain metastasis that is fully removed and has a specific lab marker in the brain tissue.
GenovaAges 18–70 - NCT05704283RecruitingEarly Phase 1
3D ultrasound to check lymph nodes in breast cancer
This early-phase study tests a 3D ultrasound scan to see lymph nodes in people being evaluated for breast cancer. It may help doctors better image lymph nodes during routine care.
Rochester, MinnesotaAges 18 years+ - NCT05835570Recruiting
PET scan using an integrin marker to find cancer
This trial uses a special PET/CT scan that targets a protein on some cancer cells to help detect and evaluate malignant tumors. It may help doctors better map tumors before any cancer treatment starts.
Wuhan, HubeiAges 18–85 - NCT05949983Recruiting
Exercise program for women with breast cancer
This study looks at how a tailored (adapted) physical activity program affects health outcomes and costs for women with breast cancer. It may help you stay active and feel better during or after treatment, while researchers track the program’s overall value.
ToulouseAges 18 years+ - NCT05981014RecruitingPhase 1/Phase 2
Immune cells from lymph nodes for HER2-negative breast cancer
This trial tests whether taking immune cells from your lymph nodes and giving them back to you can help shrink breast cancer that has not responded fully to initial chemotherapy. It is for women with HER2-negative breast cancer who have had stable disease after two cycles of a standard chemotherapy combination.
Guangzhou, GuangdongAges 18–70 - NCT05981001RecruitingPhase 1/Phase 2
Experimental cell therapy for advanced HER2-negative breast cancer
This study tests a new treatment for advanced HER2-negative breast cancer. Doctors will take immune cells from lymph nodes near your tumor, grow them in a lab, and then give them back to you along with chemotherapy and immunotherapy. This approach aims to help your body fight the cancer more effectively.
Guangzhou, GuangdongAges 18–70 - NCT06121557RecruitingPhase 1
Immune cells from lymph nodes for advanced HER2-negative breast cancer
This trial tests a treatment using your own immune cells taken from lymph nodes near the tumor. The cells are grown in a lab and given back to you to fight cancer, along with another drug chosen by your doctor.
Guangzhou, GuangdongAges 18–70 - NCT06121570RecruitingPhase 1
Study of immune cells from lymph nodes for HER2-negative breast cancer
This trial tests whether using a patient's own immune cells from lymph nodes near the tumor, given as a treatment before surgery, can help shrink HER2-negative breast cancer. It is for people whose cancer has not responded fully to two cycles of initial chemotherapy.
Guangzhou, GuangdongAges 18–70 - NCT06266312Recruiting
Lifestyle program before breast cancer surgery
This study tests whether a program of healthy eating, exercise, and stress management before breast cancer surgery is practical and helpful for patients who will receive chemotherapy first. It aims to see if a lifestyle plan can improve your well-being during treatment.
Maastricht, LimburgAges 18 years+ - NCT06274892Recruiting
Using an app to improve radiotherapy check-ins
This study tests whether using a mobile app to report symptoms during radiation treatment helps doctors better support patients. It is for people with breast or prostate cancer starting radiation therapy at Princess Margaret Cancer Centre.
Toronto, OntarioAges 18 years+ - NCT06672302Recruiting
Blood test to find high breast cancer risk
This study uses a blood test to help identify women who are at high risk for breast cancer. It is for Korean women aged 40 or older who have a suspicious breast finding and need a biopsy.
SeoulAges 40 years+ - NCT07587086Recruiting
PET/MR scan for breast cancer using fluorocholine
This study uses a special imaging scan (PET/MR) with a tracer called fluorocholine to see if it can help evaluate breast cancer before treatment or before surgery. It is for women who are newly diagnosed with breast cancer and will either have chemotherapy before surgery or go straight to surgery.
Taipei, TaiwanAges 25–75 - NCT06956690RecruitingPhase 1/Phase 2
Testing HMBD-501 for HER3-positive advanced solid tumors
This trial tests a new drug, HMBD-501, for people with advanced solid tumors that have a specific protein called HER3. The goal is to see if the drug is safe and if it can help shrink or control the cancer.
La Jolla, CaliforniaAges 18 years+ - NCT07046689Recruiting
PET scans to check Trop2 ADC treatment in breast cancer
This trial uses a special PET scan to see if a type of drug called Trop2-ADC is working in people with advanced breast cancer. The scan may help doctors decide if the treatment is right for you.
Xiamen, FujianAges 18 years+ - NCT07070128Recruiting
AI screening tool for breast cancer genetic risk
This trial tests an AI tool that predicts genetic risk for breast cancer. It may help women identified as high-risk by their breast surgeon get quicker genetic counseling.
Golania, GoiásAges Any age - NCT07088263RecruitingPhase 3
Adaptive Chemotherapy for Advanced Breast Cancer
This trial tests a new approach to chemotherapy that adapts over time for people with advanced breast cancer that has not responded to first-line treatment. It is designed to personalize treatment based on how the cancer responds, potentially improving outcomes with fewer side effects.
Guangzhou, GuangdongAges 18–75 - NCT07156253RecruitingPhase 1
Study of SYN818 with olaparib for advanced solid tumors
This trial is testing a new drug, SYN818, combined with olaparib for people with advanced solid tumors that have certain genetic changes (BRCA mutations or related DNA repair problems). It may be an option if you have ovarian or HER2-negative breast cancer and other treatments are no longer working.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07250386RecruitingPhase 1
CEA-targeted CAR-T therapy for advanced solid tumors
This trial tests a new CAR-T cell therapy that targets CEA, a protein found on certain cancer cells. It's for people with advanced solid tumors like lung or breast cancer who have not responded to other treatments.
Hangzhou, ZhejiangAges 18 years+ - NCT07338721Recruiting
Ultrasound vs. incision for finding sentinel lymph nodes in breast cancer
This trial compares two techniques for finding the first lymph node that breast cancer might spread to (the sentinel node). It tests if using ultrasound guidance through a small axillary incision is better than the standard method.
AntalyaAges 18 years+ - NCT02389673Recruiting
Radiation during breast surgery for low-grade DCIS
This trial studies giving radiation during surgery for women with a certain early breast condition called ductal carcinoma in situ (DCIS). It may help lower the chance that the DCIS comes back, especially when combined with breast-conserving surgery.
Guangzhou, GuangdongAges 18–70 - NCT02541435Recruiting
Breast cancer radiotherapy side effects study
This study looks at heart and blood-vessel side effects after modern radiation treatment for breast cancer, both soon after and years later. It may help doctors understand who is at risk and how to monitor heart health over time.
ÅlesundAges 30–70
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Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,478 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.