Clinical trials
Primary Breast Cancer clinical trials
Below are recruiting primary breast cancer clinical trials, each written for real people, not researchers. We’re tracking 718 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05933395RecruitingPhase 2
Targeted treatment for ER+ breast cancer after CDK4/6 therapy
This Phase 2 study tests a genetically guided treatment plan for ER-positive breast cancer that has progressed after CDK4/6 therapy. It may help by matching treatment to tumor genetic changes.
Lebanon, New HampshireAges 18 years+ - NCT06230055RecruitingPhase 4
Chemotherapy for breast cancer that has spread to the spinal fluid
This trial tests a chemotherapy drug given directly into the spinal fluid for people with HER2-negative breast cancer that has spread to the lining of the brain and spinal cord (called leptomeningeal metastasis). It may help when standard treatments have stopped working or caused too many side effects.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT06551220Recruiting
T-DXd for advanced breast cancer with various HER2 levels
This study looks at how well the drug T-DXd (Enhertu) works against breast cancer that has spread or can't be removed with surgery. It includes patients with any level of HER2 protein, so it might be an option even if your cancer has low HER2.
New Haven, ConnecticutAges 18–80 - NCT07260188Recruiting
Breast cancer organoids from patients before chemo
This study collects tumor tissue from breast cancer patients before they start chemotherapy to grow miniature versions of their tumors (organoids) in the lab. The goal is to understand how each tumor responds to treatment, which may help personalize future therapies.
Pavia, PVAges 18 years+ - NCT07262138Recruiting
Active monitoring for older women with early breast cancer
This trial studies whether active monitoring (watchful waiting) can be a safe option instead of immediate surgery or other treatments for women 70 and older who have a small, slow-growing type of breast cancer. If you join, you will not have surgery or other treatments right away, but your cancer will be closely watched.
Pittsburgh, PennsylvaniaAges 70 years+ - NCT07400523RecruitingPhase 3
Ribociclib for breast cancer with leftover disease after chemo
This trial tests ribociclib, a targeted therapy, for women with hormone receptor-positive, HER2-negative breast cancer who still have cancer cells in the breast or lymph nodes after initial chemotherapy. It aims to reduce the chance of cancer coming back.
Zhanjiang, GuangdongAges 18 years+ - NCT06195306RecruitingPhase 2
Low dose tamoxifen and omega-3 for breast cancer prevention
This study tests whether low-dose tamoxifen (a breast cancer prevention drug) or omega-3 supplements can lower breast cancer risk in postmenopausal women who are overweight and have a higher chance of getting the disease. The study lasts about 6 months and involves blood draws and a breast fluid test to see how the treatment affects breast cells.
Kansas City, KansasAges 45–74 - NCT07503808RecruitingPhase 1
IDE034 for advanced solid tumors with B7-H3 or PTK7
This study tests a new drug called IDE034 for people with advanced solid tumors that have certain markers (B7-H3 and PTK7). The drug may help by targeting these markers on cancer cells, and the study checks if it is safe and effective.
Denver, ColoradoAges 18 years+ - NCT05746897RecruitingPhase 1
First-in-human test of an anti-PVRIG drug for advanced cancers
This early-phase study tests NM1F (an anti-PVRIG antibody) in people with advanced solid tumors to see if it’s safe and whether it may work. It also includes pembrolizumab (a PD-1 “checkpoint” medicine), aiming to boost the immune system against the cancer.
Dallas, TexasAges 18 years+ - NCT07245069RecruitingPhase 2
Can dapagliflozin protect the heart during breast cancer chemo?
This trial tests if the drug dapagliflozin can prevent heart damage caused by anthracycline chemotherapy in breast cancer patients. It aims to see if taking the drug during chemo helps keep your heart healthy.
LjubljanaAges 18 years+ - NCT07352930Recruiting
Fluorescence-guided system for breast cancer surgery margins
This trial tests a new imaging system that helps surgeons see if cancer cells remain after breast-conserving surgery. It may reduce the need for a second surgery by giving real-time feedback on the removed tissue.
Guangzhou, GuangdongAges 18 years+ - NCT05005403RecruitingPhase 1
Testing azirkitug for lung, head/neck, and other solid cancers
This Phase 1 study tests how a new medicine (azirkitug) behaves in the body and how safe it is, given by IV infusion alone or with other cancer drugs. It may help people with several advanced solid tumor cancers, especially after standard treatments have stopped working.
Duarte, CaliforniaAges 18 years+ - NCT06100263Recruiting
Breast cancer resilience exercise program for Black women
This study tests a personalized exercise program designed to help Black women build strength and resilience after breast cancer treatment. It aims to see if guided exercise can improve physical and emotional well-being.
Ann Arbor, MichiganAges 18 years+ - NCT07318051Recruiting
Sample collection for cancer research study
This study collects blood and tumor tissue samples from patients with certain untreated cancers to help researchers develop and improve tests. You may be eligible if you have one of the listed cancer types and have not yet started treatment.
Austin, TexasAges 18 years+ - NCT05076760RecruitingPhase 1
Study of a cancer-killing virus with standard treatments
This Phase 1 trial tests MEM-288, an oncolytic (cancer-killing) virus, either alone or combined with standard cancer medicines, in people with advanced solid tumors. It’s designed to see how the treatment works and how safe it is in different cancer types and after specific prior therapies.
Tampa, FloridaAges 18 years+ - NCT07130383RecruitingPhase 2
Study of two experimental drugs for advanced breast cancer and other solid tumors
This trial tests a combination of two investigational drugs, MHB036C and MHB039A, in people with advanced breast cancer or other solid tumors that have spread. The goal is to see if this combination can shrink tumors and help patients live longer.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT04158843Recruiting
Local surgery vs comfort treatment for limited breast cancer spread
This trial compares a more direct local treatment (targeting a small, limited spot) versus a comfort-focused palliative approach for breast cancer that has spread only to one side of the upper arm bone or breastbone area. It aims to see which approach works better while keeping side effects manageable.
Hangzhou, ZhejiangAges 18–75 - NCT05634889Recruiting
Personalized breast radiation for limited lymph-node spread
This trial studies a tailored form of radiation treatment for some people with early breast cancer whose sentinel lymph-node biopsy shows cancer in 1–2 nodes. It may help improve local control while guiding the best radiation approach for your specific situation.
HelsinkiAges 18 years+ - NCT06227338Recruiting
Testing a dye to see breast cancer during surgery
This trial uses a special dye called ICG that makes cancer glow under a special camera during breast cancer surgery. Doctors want to find the best time to give the dye so they can see the cancer clearly and remove all of it in one operation.
BrusselsAges 18 years+ - NCT06315868Recruiting
Breast cancer organoid study for tumor analysis
This study is testing a new way to understand your breast cancer by growing tiny tumor samples (called organoids) in the lab. It will help researchers learn more about your cancer type and could lead to better treatments.
RomaAges 18–70 - NCT06793332RecruitingPhase 2
Ivonescimab and Trodelvy for breast cancer with brain metastases
This trial tests two drugs (Ivonescimab and a Trop2 ADC) for people with triple-negative breast cancer that has spread to the brain. It aims to see if this combination can shrink brain tumors and help patients live longer.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT07104266RecruitingPhase 2
Celecoxib for early triple-negative breast cancer
This research study tests whether adding a drug called celecoxib (an anti-inflammatory pill) can help treat early-stage triple-negative breast cancer after surgery, before or during radiation therapy. You may be eligible if your cancer was removed cleanly and you do not have other health issues like stomach ulcers, kidney problems, or a history of allergic reactions to certain pain relievers.
Sherbrooke, QuebecAges 18 years+ - NCT07244094Recruiting
AI predicts breast cancer spread risk from tissue scans
This trial uses artificial intelligence to analyze images of your tumor tissue to predict if breast cancer might spread to other parts of the body. It may help doctors better understand your individual risk and guide treatment decisions.
Changchun, JilinAges 18–95 - NCT01042548Recruiting
Testing blood and tissue markers in breast surgery patients
This study looks at proteins and imaging patterns (from tissue, fluid near the tumor, and blood) to better understand breast cancer markers. It may help researchers find clues that doctors can use to evaluate breast nodules and newly diagnosed invasive breast cancer.
Pittsburgh, PennsylvaniaAges 18 years+
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Common questions
- Are there clinical trials for primary breast cancer?
- Yes. Clin2 currently lists 718 recruiting primary 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 primary 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 primary 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.