Clinical trials
Unresectable Breast Cancer clinical trials
Below are recruiting unresectable breast cancer clinical trials, each written for real people, not researchers. We’re tracking 263 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06210776Recruiting
Study of T-DXd in Chinese breast cancer patients
This study looks at how well Trastuzumab Deruxtecan (T-DXd) works in Chinese women with breast cancer that has spread. It is for people whose cancer is either HER2-positive or HER2-low and who have already had some treatment.
BeijingAges 18 years+ - NCT06167694RecruitingPhase 1/Phase 2
Study of HRS-8080 and Dalpiciclib for advanced breast cancer
This trial tests a new combination of two drugs (HRS-8080 and Dalpiciclib) for women with advanced breast cancer that cannot be removed by surgery. It may be an option if you have already tried hormone therapy or are starting advanced treatment for the first time.
Beijing, Beijing MunicipalityAges 18–75 - 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+ - NCT06120283RecruitingPhase 1
Study of BGB-43395 alone or with other drugs for advanced solid tumors
This study tests a new drug called BGB-43395 alone or with other treatments for advanced solid tumors, especially breast cancer. The goal is to find the best dose and see how well it works. It may be an option if your cancer has not responded to other treatments.
Denver, ColoradoAges 18 years+ - NCT06123988Recruiting
Fasting and exercise for advanced breast cancer
This study looks at whether fasting overnight and/or doing exercise can help improve fatigue and other quality-of-life measures in women with advanced hormone receptor positive breast cancer who are already taking a CDK4/6 inhibitor. Participation may involve following a fasting or exercise plan for a period of time.
Phoenix, ArizonaAges 18 years+ - NCT06099769RecruitingPhase 2
Testing enzalutamide with or without mifepristone for AR-positive breast cancer
This trial tests if adding the drug mifepristone to the standard antiandrogen enzalutamide works better than enzalutamide alone or chemotherapy for people with a specific type of breast cancer that has androgen receptors. It aims to find a new targeted treatment option for triple-negative or ER-low breast cancer.
Birmingham, AlabamaAges 18 years+ - NCT06072612RecruitingPhase 3
Bria-IMT plus CPI vs standard care for advanced breast cancer
This trial tests a new combination of two immunotherapy drugs (Bria-IMT and a checkpoint inhibitor) against your doctor's choice of standard treatments. It is for people with advanced breast cancer that has spread and who have already tried several prior therapies.
Phoenix, ArizonaAges 18 years+ - NCT05977036Recruiting
Choosing breast cancer treatment with biomarker testing
This study helps doctors choose the best first or second treatment for breast cancer that has spread or can't be removed. It uses a blood test to look at your cancer's markers, which may help guide which therapy is right for you. The study is for people with HR-positive, HER2-negative breast cancer who are about to start treatment with hormone therapy plus a CDK4/6 inhibitor, or another type of therapy.
St Louis, MissouriAges 18 years+ - NCT05972343Recruiting
Cooling treatment to shrink breast tumors without surgery
This trial tests a cooling-based procedure (called cryoablation) to destroy a breast cancer tumor in people who cannot or do not want surgery. It may help shrink the visible tumor without needing an operating room.
St Louis, MissouriAges 18 years+ - NCT05945732Recruiting
Testing T-DXd or chemo for HER2-low or HR-positive breast cancer
This study looks at treatment choices for adults with breast cancer that has spread and cannot be removed by surgery (unresectable metastatic disease). It focuses on people with HER2-low (and some HER2-ultralow) and/or hormone-receptor positive cancer, and compares how well treatments like T-DXd or standard chemotherapy work.
GrazAges 18 years+ - NCT05950945RecruitingPhase 3
Trastuzumab deruxtecan for HER2-low metastatic breast cancer
This trial tests a targeted antibody-drug medicine (trastuzumab deruxtecan, T-DXd) in people with metastatic breast cancer that is HER2-low or HER2 IHC 0. It may help by treating tumors that haven’t previously received anti-HER2 treatment in the metastatic setting.
Miami Beach, FloridaAges 18 years+ - NCT05735080RecruitingPhase 1/Phase 2
INX-315 for advanced cancers with a specific gene change
This trial studies an experimental medicine (INX-315) given in an “open-label” way to people with advanced cancer that has not responded to prior treatment. It mainly looks at safety and side effects first, and also checks how well it works in cancers with a specific gene amplification.
Orlando, FloridaAges 18 years+ - NCT05741164RecruitingPhase 2
Propranolol plus pembrolizumab for hard-to-treat breast cancer
This Phase 2 trial studies whether adding propranolol to pembrolizumab can “re-sensitize” tumors and slow cancer in triple-negative breast cancer that no longer responds to checkpoint immunotherapy. It may help some people whose cancer has grown despite prior pembrolizumab and chemotherapy.
Atlanta, GeorgiaAges 18 years+ - NCT05608252RecruitingPhase 1/Phase 2
Drug combination for advanced ER-positive, HER2-negative breast cancer
This Phase 1/2 study tests how well a new treatment combination (VS-6766, abemaciclib, and fulvestrant) works for metastatic or hard-to-remove breast cancer that is hormone-driven (ER/PR positive) and HER2 negative. It is mainly designed to find the safest dose and then see whether it can control the cancer after it has progressed on certain prior medicines.
Boston, MassachusettsAges 18 years+ - NCT05564377RecruitingPhase 2
Find targeted cancer treatments using genetic testing
This study matches people with advanced solid tumors to targeted treatment plans based on genetic testing. It also requires tumor sample testing to help doctors choose the most promising therapy for your specific tumor changes.
Birmingham, AlabamaAges Any age - NCT05573893Recruiting
Real-world study of trastuzumab deruxtecan for HER2 breast cancer
This study looks at how people feel (patient-reported outcomes) and their real-world health data while they receive trastuzumab deruxtecan for advanced HER2-positive, HER2-low, or HER2-ultralow breast cancer. It helps researchers understand what outcomes happen outside of tightly controlled clinical trials.
AmbergAges 18–130 - NCT05579366RecruitingPhase 1/Phase 2
Study of rinatabart sesutecan for advanced solid tumors
This trial tests an investigational drug called rinatabart sesutecan (also known as Rina-S) for people with advanced solid tumors, including ovarian, endometrial, lung, breast, and other cancers. The drug is designed to target and kill cancer cells, and the study aims to see if it is safe and effective.
Phoenix, ArizonaAges 18 years+ - NCT05470348RecruitingPhase 1
Test drug BL-B01D1 for advanced breast and other solid cancers
This Phase 1 trial tests BL-B01D1 in people with advanced (unresectable or metastatic) breast cancer and certain other solid tumors that have not worked with standard treatment. The goal is to learn if the drug can be given safely and to see whether it shows signs of benefit.
Guangzhou, GuangdongAges 18–75 - NCT05422794RecruitingPhase 1
Adding a new drug plus pembrolizumab to standard chemo for TNBC
This trial studies whether adding a new anti-cancer drug (ZEN-3694) and the immunotherapy drug pembrolizumab to standard chemotherapy (nab-paclitaxel) can work better for advanced triple-negative breast cancer. It’s testing safety first (Phase 1) and, for some patients, how well the treatment controls the cancer.
Boston, MassachusettsAges 18 years+ - NCT05372640RecruitingPhase 1
Drug combo trial for rare cancers with shared NUT features
This Phase 1 trial tests the safety and early signs of effectiveness of combining two anti-cancer drugs (ZEN003694 and abemaciclib) in teens and adults with metastatic or unresectable NUT carcinoma, breast cancer, and other solid tumors. It may help by finding a safer dose and whether the drug combination can shrink or control tumors that do not respond to standard treatments.
Los Angeles, CaliforniaAges 12 years+ - NCT05412225RecruitingPhase 1
Pre-surgery radiation, then mastectomy and immediate breast reconstruction
This Phase 1 study looks at giving radiation before surgery for people with locally advanced breast cancer, then performing a mastectomy and immediate reconstruction. It aims to see whether this combined approach can shrink the cancer before surgery and safely allow reconstruction afterward.
Basking Ridge, New JerseyAges 18 years+ - NCT05269381RecruitingPhase 1/Phase 2
Personalized cancer vaccine with pembrolizumab for advanced solid tumors
This trial tests a personalized vaccine made from your tumor's unique markers, combined with the drug pembrolizumab, to help your immune system fight cancer. It is for people with advanced solid tumors who have already tried standard treatments.
Jacksonville, FloridaAges 16 years+ - NCT05304962RecruitingPhase 1
Test drug RGT-419B for advanced ER+ HER2- breast cancer
This Phase 1 study tests a new drug (RGT-419B), given alone or with hormone (endocrine) therapy, in people with advanced ER-positive, HER2-negative breast cancer that has progressed after standard treatments. It looks mainly at safety and early signs of how well the treatment may work.
La Jolla, CaliforniaAges 18 years+ - NCT04965766RecruitingPhase 2
Study drug for HER2-negative, advanced breast cancer after prior treatment
This Phase 2 trial tests patritumab deruxtecan (U3-1402) in people with HER2-negative, hormone-receptor positive (HR+) breast cancer that cannot be removed by surgery or has spread. It’s for cancers that have progressed despite endocrine therapy plus a CDK4/6 inhibitor, aiming to shrink tumors and control the disease.
DijonAges 18 years+
Hear when a new Unresectable Breast Cancer trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for unresectable breast cancer?
- Yes. Clin2 currently lists 263 recruiting unresectable 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 unresectable 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 unresectable 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.