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 272 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07227233RecruitingPhase 2
AI-guided retrial of CDK4/6 inhibitors for advanced breast cancer
This trial tests whether an artificial intelligence (AI) tool can help doctors decide if it is safe and effective to give you a second course of a CDK4/6 inhibitor drug (like palbociclib, ribociclib, or abemaciclib) plus hormone therapy for advanced (unresectable or metastatic) HR+/HER2- breast cancer. The goal is to only treat people whose cancer is likely to respond based on a special AI analysis of their tumor tissue.
La Jolla, CaliforniaAges 18 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+ - NCT07524322RecruitingPhase 1
RGT-490 for Advanced Cancers With PIK3CA Mutations
This study tests a new drug called RGT-490 in patients with advanced solid tumors (cancers that have spread or cannot be removed by surgery) that have a specific genetic change called a PIK3CA mutation. The drug is designed to block a protein involved in cancer cell growth.
Los Angeles, CaliforniaAges 18 years+ - NCT07261631RecruitingPhase 1
A study of a new radioactive drug for advanced solid tumors
This trial tests a new radioactive drug called [177Lu]Lu-DFC413 for people with certain advanced solid tumors that have stopped responding to standard treatments. The drug is designed to target cancer cells with a specific marker seen on a special scan.
Montreal, QuebecAges 18–100 - NCT02830724RecruitingPhase 1/Phase 2
CAR T therapy using blood immune cells for CD70 cancers
This trial tests a personalized immune-cell treatment (CAR T) built from your own blood lymphocytes. It targets cancers that show a marker called CD70, aiming to slow or stop the cancer when other treatments didn’t work.
Bethesda, MarylandAges 18–72 - NCT02819882Recruiting
Registry study for advanced or metastatic breast cancer
This study collects health and treatment information from people with breast cancer that cannot be fully removed by surgery or that has spread to other parts of the body. It may help researchers better understand which treatments are used and how people do over time.
Elche, AlicanteAges 18 years+ - NCT07676461Recruiting
Microbiome study in advanced cancer patients starting immunotherapy
This study looks at the bacteria in your mouth, gut, and tumors to see if they affect how well first-line immunotherapy works. It is for people with advanced stomach, colorectal, breast, cervical, or head-and-neck cancer.
Bogotá, Bogota D.C.Ages 18 years+ - NCT07459673RecruitingPhase 2
HER2-positive breast cancer trial using ctDNA to guide treatment
This trial tests a personalized treatment plan for HER2-positive breast cancer that has spread. It uses a blood test to track cancer DNA and adjust therapy, including treatments that may help prevent cancer from reaching the brain. The goal is to achieve long-term remission.
Basking Ridge, New JerseyAges 18 years+ - NCT07486089RecruitingPhase 1/Phase 2
Dual-target CAR-NK cells for advanced breast cancer
This trial tests a new type of immune cell therapy (CAR-NK cells) that targets two markers on breast cancer cells. It is for people with advanced HER2-positive or triple-negative breast cancer who have tried other treatments and need new options.
Shenzhen, GuangdongAges 18–75 - 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+ - NCT07510802RecruitingPhase 1/Phase 2
CAR-NK cells for advanced HER2+ or triple-negative breast cancer
This trial tests a new type of immune cell therapy (CAR-NK cells) that targets specific proteins on breast cancer cells. It's for people with advanced HER2-positive or triple-negative breast cancer who have tried other treatments or can't take them.
Shenzhen, GuangdongAges 18–75 - NCT07610720RecruitingPhase 2
Dalpiciclib With Anti-HER2 and Hormone Therapy for Advanced Breast Cancer
This trial tests a combination of three drugs—dalpiciclib (a new cell-cycle inhibitor), anti-HER2 therapy, and hormone therapy—for advanced breast cancer that is positive for both hormone receptors and HER2 protein. The goal is to help patients whose cancer has responded to initial treatment stay in remission longer.
Guangdong, GUANGZHOUAges 18–75 - NCT07612891RecruitingPhase 1/Phase 2
Testing INV-6452 for advanced breast cancer and solid tumors
This study tests a new drug called INV-6452 to see if it is safe and can help control advanced cancers that have grown despite prior treatment. The drug targets specific cancer cell weaknesses, particularly in hormone-sensitive breast cancers without HER2 mutations.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT05530057RecruitingPhase 2
Eribulin plus or minus trastuzumab for HER2-positive breast cancer
This trial tests whether adding trastuzumab to eribulin improves outcomes for people with HER2-positive breast cancer that has come back or spread. It’s meant for patients whose cancer has progressed after prior HER2 and chemotherapy treatments.
SeoulAges 18 years+ - NCT07597629RecruitingPhase 2
SYS6023 combination therapy for advanced breast cancer
This trial tests a new drug combination (SYS6023) for advanced breast cancer that has spread or cannot be surgically removed. The treatment targets a protein called HER3, which may help stop cancer growth in patients whose cancer has progressed despite previous treatments.
Harbin, HeilonjiangAges 18 years+ - NCT05831878Recruiting
Drug RC48 for HER2-low or HER2-ultralow breast cancer
This trial tests RC48, an antibody-drug treatment, for people with advanced breast cancer that cannot be cured or removed, specifically HER2-low (or HER2-ultralow) tumors. It may help by targeting cancer cells with this “HER2-low” trait while limiting spread in the body.
ShanghaiAges 18 years+ - NCT06486883RecruitingPhase 2
T-DXd vs CDK4/6i plus hormone therapy for advanced HR-positive, HER2-low breast cancer
This trial compares two treatments for advanced breast cancer that is HR-positive, HER2-low or ultralow, and a non-luminal subtype. It tests if a targeted antibody-drug conjugate (T-DXd) works better than the usual first-line therapy combining a CDK4/6 inhibitor with hormone therapy. This study is for people who have not had any treatment for advanced disease.
GrazAges 18 years+ - NCT04174352RecruitingEarly Phase 1
FES scan to guide tamoxifen for metastatic breast cancer
This early-phase study uses a special PET scan (FES PET/CT) to better match tamoxifen treatment to people with estrogen-receptor–positive breast cancer that has spread. It aims to see whether the scan results can help optimize tamoxifen use and potentially improve outcomes.
Madison, WisconsinAges 19 years+ - NCT05816655RecruitingPhase 2
Test two hormone treatment combinations for metastatic breast cancer
This Phase 2 study compares two combinations of hormone-blocking drugs plus an anti-cancer targeted pill to see which works better for hormone-receptor positive, HER2-negative metastatic breast cancer. It may help by finding a more effective treatment plan when the cancer has spread.
SeoulAges 19–80 - NCT06081959RecruitingPhase 3
Study of SKB264 for advanced HR+/HER2- breast cancer
This trial tests a new drug called SKB264 for people with a common type of breast cancer (HR+/HER2-) that has spread or come back and has not responded to at least one round of chemotherapy. It aims to see if this treatment can help shrink tumors or slow the disease.
Beijing, Beijing MunicipalityAges 18–75 - NCT06143553RecruitingPhase 3
Paclitaxel micelles for metastatic breast cancer
This trial tests a new form of paclitaxel (a chemotherapy drug) for metastatic breast cancer that is HER2-negative. It may be an option if your cancer has returned or not improved after 2 to 4 previous treatments.
Nanjing, JiangsuAges 18 years+ - NCT06155305Recruiting
Organoid drug test before breast cancer surgery
This trial uses a lab-grown mini-tumor (organoid) from your biopsy to test which chemotherapy drugs work best for your cancer before you have surgery. The goal is to personalize your treatment and improve outcomes.
Hangzhou, ZhejiangAges 18–70 - NCT06732323RecruitingPhase 3
Study of ESG401 for triple-negative breast cancer that has spread
This trial tests a new drug, ESG401, for people with triple-negative breast cancer that has come back or spread and cannot be removed by surgery. It compares ESG401 to standard chemotherapy options to see which works better.
BeijingAges 18 years+ - NCT07008976RecruitingPhase 3
Testing TQB2102 versus standard treatment for HER2-positive advanced breast cancer
This trial tests a new drug called TQB2102 against a standard treatment (Kadcyla) for people with HER2-positive breast cancer that has spread or cannot be removed. It is for those whose cancer has worsened after previous HER2-targeted therapy.
Bengbu, AnhuiAges 18–75
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Common questions
- Are there clinical trials for unresectable breast cancer?
- Yes. Clin2 currently lists 272 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.