Clinical trials
ER Positive Breast Cancer clinical trials
Below are recruiting er positive breast cancer clinical trials, each written for real people, not researchers. We’re tracking 436 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- 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+ - NCT06776458Recruiting
Aromatase inhibitor effects on heart and brain health in breast cancer
This study looks at how aromatase inhibitors (a type of hormone therapy for breast cancer) affect your heart and brain health over time. It compares women with breast cancer who have taken these drugs to healthy women of similar age.
Toronto, OntarioAges Any age - NCT07180160RecruitingPhase 2
A study of QL1706 for HR-positive, HER2-negative breast cancer
This trial tests a new drug combination (iparomlimab and tuvonralimab, also called QL1706) for people with advanced breast cancer that is hormone receptor-positive and HER2-negative. It may be an option if standard treatments have stopped working.
ShanghaiAges 18 years+ - 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+ - NCT07402473RecruitingPhase 2
Optimizing treatment before surgery for HER2-positive breast cancer
This trial tests a neoadjuvant (before surgery) treatment plan for people with early-stage HER2-positive breast cancer. The goal is to see if a personalized approach can improve outcomes.
Elizabeth, New JerseyAges 18–90 - 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+ - NCT06953882RecruitingPhase 2
Skipping chemo after surgery for ER+ HER2- breast cancer
This study tests whether some people with a certain type of breast cancer (ER-positive, HER2-negative) can safely skip chemotherapy. After surgery, they receive a targeted pill (ribociclib) plus hormone therapy instead. The goal is to see if this approach works just as well with fewer side effects.
New Haven, ConnecticutAges 18 years+ - NCT06234137Recruiting
Chemo plus targeted therapy for advanced HER2+ breast cancer
This trial tests a combination of chemotherapy (docetaxel and carboplatin) plus two targeted drugs (Inetetamab and Pyrotinib) for people with locally advanced HER2-positive breast cancer that has not spread to other parts of the body. The goal is to see if this powerful combo can shrink the tumor before surgery or other treatments.
Wenzhou, ZhejiangAges 18–75 - NCT06837792RecruitingPhase 2
T-DXd vs hormone therapy for HER2-low advanced breast cancer
This trial compares a targeted antibody-drug conjugate called T-DXd against standard hormone therapy for women with HR+, HER2-low advanced breast cancer that has progressed after first-line endocrine therapy plus a CDK4/6 inhibitor. It aims to see if T-DXd works better than continuing hormone therapy alone.
SeoulAges 19 years+ - 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+ - 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+ - 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 - 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+ - NCT05759546RecruitingPhase 2
Test a PARP and CDK4/6 medicine plus hormone therapy
This Phase 2 study tests whether combining a PARP inhibitor with a CDK4/6 inhibitor and hormone (endocrine) therapy can help people with advanced HR-positive, HER2-negative breast cancer. It’s for certain patients who have not yet had chemotherapy or targeted therapy for metastatic disease.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT05812807RecruitingPhase 3
Pembrolizumab versus monitoring after triple-negative breast cancer response
This trial checks whether giving pembrolizumab (an immunotherapy) after surgery helps people with triple-negative breast cancer reduce the chance of the cancer coming back, compared with close monitoring only. It’s for patients who had no remaining invasive cancer after neoadjuvant chemotherapy plus pembrolizumab.
Birmingham, AlabamaAges 18 years+ - NCT06876714RecruitingPhase 3
Shorter vs Longer HER2 Therapy for Breast Cancer with Complete Response
This trial compares 6 months versus 12 months of HER2-targeted therapy for people with HER2+ breast cancer who had a complete response after chemo and trastuzumab. The goal is to see if a shorter treatment is just as effective.
Phoenix, ArizonaAges 18 years+ - NCT06058377RecruitingPhase 3
Adding immunotherapy to chemo for stage II-III breast cancer
This trial tests whether adding the immunotherapy drug durvalumab to standard chemotherapy works better than chemo alone for people with hormone receptor positive, HER2 negative breast cancer that is stage II or III and has a high-risk genetic score (MammaPrint High Risk 2).
Birmingham, AlabamaAges 18 years+ - NCT05878314Recruiting
Testing how hormones and tumor markers guide breast cancer treatment
This study looks at how planned hormone (endocrine) treatment, the menstrual cycle, and lab markers from the tumor may help doctors choose the best treatment for early-stage, hormone-receptor–positive, HER2-negative breast cancer. It may help personalize decisions, including what to do before surgery.
TübingenAges 18 years+ - NCT05929768RecruitingPhase 3
Shorter chemo plus immunotherapy without anthracyclines for early TNBC
This Phase 3 trial tests whether a shorter course of chemotherapy plus immunotherapy can work as well as standard treatment for early-stage triple-negative breast cancer. It avoids anthracycline drugs and may help reduce exposure to those medicines if the shorter plan is effective and safe.
Birmingham, AlabamaAges 18 years+ - NCT06656624RecruitingPhase 2
Ribociclib plus hormone therapy for advanced breast cancer
This trial tests a new approach: starting with a targeted pill (ribociclib) plus hormone therapy (an aromatase inhibitor), instead of immediate chemotherapy, for women with a specific type of breast cancer (ER low-positive, HER2-negative) that is growing quickly. If eligible, you would not have received any prior treatment for your advanced cancer.
Nanjing, JiangsuAges 18–99 - NCT06616987RecruitingPhase 2
Preventing neutropenia from sacituzumab govitecan in TNBC
This trial tests whether a drug called sacituzumab govitecan can help prevent a low white blood cell count (neutropenia) in people with metastatic triple-negative breast cancer. It is for patients who have already received some chemotherapy but need a new treatment option.
SeoulAges 19 years+ - NCT06518837RecruitingPhase 2
Tirzepatide for weight loss in early breast cancer
This study tests if tirzepatide (a weight loss drug) can help women and men with early-stage hormone receptor-positive breast cancer who are overweight or obese. The goal is to see if losing weight can improve outcomes after completing their initial breast cancer treatment.
Elizabeth, New JerseyAges 18 years+ - NCT07460752RecruitingPhase 2
Alternative injection site for goserelin in breast cancer patients
This trial is testing whether giving the drug goserelin in a different spot on the body works just as well for suppressing ovarian function in premenopausal women with hormone receptor positive breast cancer. You may be a fit if you've already been on goserelin shots in your abdomen for at least 6 months.
Rochester, MinnesotaAges 18–50 - NCT06382948RecruitingPhase 3
Elacestrant and everolimus for ESR1-mutant advanced breast cancer
This trial tests a new combination of two oral targeted therapy pills (elacestrant and everolimus) for people with a specific type of advanced breast cancer. It is for those whose cancer has an ESR1 mutation and has stopped responding to CDK4/6 inhibitors and hormone therapy.
InnsbruckAges 18 years+
Hear when a new ER Positive 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 er positive breast cancer?
- Yes. Clin2 currently lists 436 recruiting er positive 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 er positive 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 er positive 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))
- HER2-positive Breast Cancer
- Hormone-receptor-positive Breast Cancer
- Estrogen-receptor-positive Breast Cancer
- HER2-positive Metastatic Breast Cancer
- Hormone Receptor Positive HER-2 Negative Breast Cancer
- Node-positive Breast Cancer
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.