Clinical trials
Metastatic Breast Cancer clinical trials
Below are recruiting metastatic breast cancer clinical trials, each written for real people, not researchers. We’re tracking 1,328 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06435429RecruitingPhase 3
Zanidatamab vs trastuzumab for HER2+ breast cancer
This study compares a new drug called zanidatamab against trastuzumab (Herceptin), both given with a chemotherapy of your doctor's choice. It is for people with HER2-positive breast cancer that has spread and who have already tried T-DXd treatment.
Phoenix, ArizonaAges 18 years+ - NCT07299825RecruitingPhase 2
Study of A166 for advanced HER2-positive breast cancer
This trial tests a new drug called A166 for people with HER2-positive breast cancer that has spread or can't be removed. It is for those who have already tried up to five treatments, including a specific type of HER2 antibody-drug conjugate.
Zhenzhou, HenanAges 18–75 - NCT05305924RecruitingPhase 2
Fulvestrant plus abemaciclib for ER+, HER2− advanced breast cancer
This Phase 2 study tests whether adding abemaciclib to fulvestrant can slow or shrink ER-positive, HER2-negative metastatic breast cancer. It is mainly for people whose cancer has progressed despite prior treatment with a CDK4/6 inhibitor and an aromatase inhibitor.
Houston, TexasAges 18 years+ - NCT06179303RecruitingPhase 2
Imaging to predict response to abemaciclib for advanced breast cancer
This trial tests if a special PET scan can predict how well the drug abemaciclib works for people with advanced hormone receptor-positive, HER2-negative breast cancer. If you qualify, you would receive abemaciclib and have imaging scans to see if your cancer responds.
St Louis, MissouriAges 18 years+ - NCT06702995RecruitingPhase 1/Phase 2
Study of XNW5004 plus enzalutamide for advanced prostate cancer
This trial tests a new drug, XNW5004, combined with enzalutamide for men with metastatic castration-resistant prostate cancer that has progressed despite other treatments. It aims to see if this combination can slow the cancer's growth.
Jinan, ShandongAges 18 years+ - NCT05759572RecruitingPhase 2
Apatinib plus hormone therapy for advanced breast cancer
This Phase 2 study tests whether apatinib combined with a CDK4/6 inhibitor and hormone therapy can better control advanced hormone receptor–positive, HER2-negative breast cancer. It may help shrink tumors or slow their growth, especially in cases that can’t be fully treated with surgery or radiation.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT07112053RecruitingPhase 2
Vaccine with hormone therapy or chemo for advanced breast cancer
This trial tests a vaccine (STEMVAC) given with your standard hormone therapy or chemotherapy. It is for people with advanced hormone receptor-positive, HER2-negative breast cancer who are already on certain treatments. The goal is to see if adding the vaccine can help control the cancer better.
Seattle, WashingtonAges 18 years+ - NCT07136428RecruitingPhase 1/Phase 2
Asciminib for HER2+ breast cancer that has spread to the brain
This trial tests the drug asciminib for people with HER2-positive breast cancer that has spread to the brain and is growing. It may be an option if you have already tried standard treatments like T-DXd and tucatinib.
Durham, North CarolinaAges 18 years+ - NCT07497386RecruitingPhase 2
Trastuzumab rezetecan for advanced breast cancer
This trial tests a new drug, trastuzumab rezetecan, for women with breast cancer that has come back or spread and cannot be removed by surgery. It's for those who haven't had chemotherapy for advanced disease but have tried hormone therapy and it stopped working.
Beijing, Beijing MunicipalityAges 18–75 - NCT06458413RecruitingPhase 2
Utidelone plus capecitabine for metastatic breast cancer
This trial tests a combination of two chemotherapy drugs, utidelone and capecitabine, for women with HER2-negative breast cancer that has spread to other parts of the body. The goal is to see if this combination can help shrink tumors and slow the cancer's growth.
Zhengzhou, HenanAges 18–70 - NCT05467891RecruitingPhase 2
Ribociclib plus hormone therapy for recurrent breast cancer
This trial tests whether adding ribociclib (a targeted pill) to hormone therapy can control breast cancer that has come back in the breast area or nearby lymph nodes/chest wall. It targets hormone-receptor–positive and HER2-negative tumors to help slow disease after local treatment.
Birmingham, AlabamaAges 18 years+ - NCT04547907RecruitingPhase 3
Testing two HER2 breast cancer medicines before surgery
This trial compares two anti-HER2 medicines given before surgery to shrink HER2-positive early breast cancer. It aims to see which treatment works better as “neoadjuvant” therapy to improve outcomes while keeping you safe.
Zhengzhou, HenanAges 18–70 - NCT07137871RecruitingPhase 1
Avasopasem for advanced HR+ breast cancer after CDK 4/6 inhibitor
This trial tests a drug called avasopasem for people with hormone receptor-positive, HER2-negative breast cancer that has spread and gotten worse despite treatment with a CDK 4/6 inhibitor (ribociclib or abemaciclib) and hormonal therapy. It aims to see if adding avasopasem can help control the cancer.
San Antonio, TexasAges 18 years+ - NCT07446452RecruitingPhase 2
Combination treatment for HER2-low advanced breast cancer
This trial tests a combination of two drugs, disitamab vedotin and bevacizumab, for people with a specific type of advanced breast cancer called HER2-low. It is designed for those who have already been treated with a drug called T-DXd and need further options.
Nanjing, JiangsuAges 18–75 - NCT05955170RecruitingPhase 2
Tucatinib plus oral chemo and trastuzumab for metastatic HER2+ breast cancer
This Phase 2 trial studies tucatinib combined with oral etoposide and trastuzumab in people with metastatic HER2-positive breast cancer, aiming to slow cancer growth. You may be eligible if you previously had progression on a similar HER2-targeted treatment or cannot take capecitabine for medical reasons.
Clermont-Ferrand, Clermont FerrandAges 18 years+ - NCT07389733RecruitingPhase 1/Phase 2
Study of HRS-6208 with other drugs for advanced breast cancer
This trial tests a new combination of drugs (HRS-6208 with HRS-8080, fulvestrant, or letrozole) for people with advanced or metastatic breast cancer that cannot be removed by surgery. It aims to see if these combinations can help shrink or slow the cancer.
Dalian, LiaoningAges 18–75 - NCT07377643RecruitingPhase 3
New drug combo for advanced HER2-positive breast cancer
This trial tests a new drug called IBI354 (an antibody-drug conjugate) given with or without pertuzumab, compared to the standard combination of taxane, trastuzumab, and pertuzumab, for people with HER2-positive breast cancer that has spread and who have not had prior treatment for advanced disease.
Beijing, Beijing MunicipalityAges 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 - NCT05982678RecruitingPhase 2
Study of a drug for breast cancer that has spread to a few spots
This trial tests a drug for people with HER2-positive breast cancer that has spread to only a few places in the body (up to 5 spots). It aims to see if the treatment works well before starting stronger therapies.
AmsterdamAges 18 years+ - NCT06832202RecruitingPhase 2
HLX22 plus Enhertu for HR+, HER2-low breast cancer
This trial tests a new drug, HLX22, combined with Enhertu (trastuzumab deruxtecan) for people with advanced breast cancer that is hormone receptor positive and HER2-low. The goal is to see if the combination works better than Enhertu alone.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT06846437RecruitingPhase 3
New drug JSKN003 vs. Kadcyla for HER2-positive advanced breast cancer
This trial compares a new targeted therapy (JSKN003) against Kadcyla (T-DM1) for people with HER2-positive breast cancer that has advanced or spread. Both drugs work by attaching a chemotherapy directly to HER2-positive cancer cells, and the study aims to see if the new drug works better or has fewer side effects.
ShanghaiAges 18 years+ - NCT06102824RecruitingPhase 2
Organoid-guided treatment for advanced breast cancer
This trial tests whether using a miniature version of your tumor grown in a lab can help choose the best treatment for advanced breast cancer. It compares this personalized approach to standard care.
Guangzhou, GuangdongAges 18–80 - NCT06857305Enrolling by invitationPhase 3
Eribulin every two weeks vs standard schedule for advanced breast cancer
This trial compares a new every-two-week dosing schedule of the chemotherapy drug eribulin to the standard schedule in people with HER2-negative breast cancer that has returned or spread. The goal is to see if the biweekly regimen is safer or works better.
Beijing, BAges 18 years+ - NCT06860529RecruitingPhase 2
Immunotherapy plus chemo for early-stage HR+/HER2- breast cancer
This trial tests adding the immunotherapy drug serplulimab to standard chemotherapy for people with early-stage HR-positive, HER2-negative breast cancer. It aims to see if this combination can improve outcomes before surgery.
Zhengzhou, HenanAges 18 years+
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Common questions
- Are there clinical trials for metastatic breast cancer?
- Yes. Clin2 currently lists 1,328 recruiting metastatic 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 metastatic 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 metastatic 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
- Breast Cancer Early Stage Breast Cancer (Stage 1-3)
- Breast Cancer (Triple Negative Breast Cancer (TNBC))
- Locally Advanced or Metastatic Breast Cancer
- Metastatic Triple-negative Breast Cancer
- HER2-positive Metastatic Breast Cancer
- Advanced/Metastatic Breast Cancer
- Non-metastatic Breast Cancer
- Advanced or Metastatic Breast Cancer
Beyond the search
We also like to point to nonprofits doing real good in this area. We aren’t affiliated with them — we just admire the work.
- Stand Up To CancerPeople facing cancer across many types, through the research that leads to better treatments.
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.