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 437 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07616427RecruitingPhase 2
New drug plus hormone therapy for HER2-positive breast cancer
This study tests a new drug called fovinaciclib combined with hormone therapy and HER2-targeting drugs for early-stage breast cancer that has specific markers (HR-positive and HER2-positive). The goal is to shrink tumors before surgery and improve outcomes.
Nanjing, JiangsuAges 18–75 - NCT07616453RecruitingPhase 2
New Drug Plus Hormone Therapy for Hormone-Responsive Breast Cancer
This trial tests whether a new drug called culmerciclib, combined with hormone therapy, works better than hormone therapy alone for early-stage breast cancer that grows quickly and responds to estrogen. The goal is to shrink tumors before surgery and improve outcomes.
Hangzhou, ZhejiangAges 18–75 - NCT06401005RecruitingPhase 2
Radiation, chemo, and immunotherapy before surgery for triple-negative breast cancer
This trial tests a combination of stereotactic body radiation therapy (SBRT), chemotherapy, and an immunotherapy drug called AK104 given before surgery to treat triple-negative breast cancer. It aims to see if this approach can shrink tumors more effectively and help patients avoid a mastectomy.
Wuhan, HubeiAges 18 years+ - NCT07612215RecruitingPhase 1/Phase 2
Elacestrant for Advanced Triple-Positive Breast Cancer
This trial tests a new drug called elacestrant for advanced breast cancer that is triple-positive (positive for three hormone receptors: ER, PR, and HER2). The drug may help slow or shrink cancer that has progressed despite previous treatments.
New York, New YorkAges 18 years+ - NCT04985266RecruitingPhase 2
Watch blood DNA for early breast cancer return, then add palbociclib
This study checks for early signs that ER-positive, HER2-negative breast cancer may be coming back by testing your blood for cancer DNA. If signs are found, it tests whether adding palbociclib plus fulvestrant works better than standard hormone therapy alone to prevent recurrence.
AngersAges 18 years+ - NCT07563595Recruiting
Elacestrant for advanced ER+ HER2- breast cancer with ESR1 mutation
This trial tests elacestrant, a new hormone therapy drug, in women whose advanced or spread breast cancer has stopped responding to first-line hormone treatment. The drug is designed to work against a specific genetic change (ESR1 mutation) that can develop in these cancers.
Freiburg im BreisgauAges 18 years+ - NCT07544056RecruitingPhase 2/Phase 3
BEBT-209 Plus Chemotherapy for Triple-Negative Breast Cancer
This study tests a new drug called BEBT-209 combined with chemotherapy (carboplatin and gemcitabine) in women with advanced triple-negative breast cancer that has spread or cannot be surgically removed. The goal is to see if this combination can slow or stop cancer growth better than standard treatments.
Guangzhou, GuangdongAges 18–75 - NCT07543536RecruitingPhase 3
Megestrol Acetate for Fatigue in HER2+ Breast Cancer
This study tests whether a medication called megestrol acetate can help reduce severe tiredness and fatigue in people with advanced breast cancer who are receiving a targeted therapy called T-DXd (trastuzumab deruxtecan). Fatigue is a common side effect that can really impact quality of life.
Guangzhou, GuangdongAges 18–75 - NCT07541079RecruitingPhase 3
Testing a New Breast Cancer Drug for Women Who Can't Tolerate Current Therapy
This study tests giredestrant, a new hormone-blocking medication, in postmenopausal women with early-stage ER+ breast cancer who have experienced intolerable side effects from their current aromatase inhibitor therapy. The trial will measure how well you tolerate this new drug and how it affects your quality of life.
Fountain Valley, CaliforniaAges 18 years+ - NCT07503717Recruiting
Brain scan surveillance in HER2-positive metastatic breast cancer
This study tests whether regular brain scans (surveillance) help spot brain metastases early in people with HER2-positive breast cancer that has spread to other parts of the body. Participation involves being randomly assigned to either routine brain scans or no extra scans to see which approach is better.
BeaumontAges 18 years+ - NCT07492394RecruitingPhase 2
Testing dalpiciclib with or without entinostat and letrozole for early breast cancer
This trial is testing a combination of three drugs (dalpiciclib, entinostat, and letrozole) for women with early-stage, hormone-receptor-positive, HER2-negative breast cancer. It aims to see if adding these medications before surgery can help shrink the tumor.
Shijiazhuang, HebeiAges 18–75 - NCT07483307RecruitingPhase 2
Hormone therapy before surgery for lobular breast cancer
This trial tests whether taking hormone therapy before surgery can improve outcomes for women with a specific type of breast cancer called lobular breast cancer. If you qualify, you would receive endocrine therapy for 6 months before your planned breast-conserving surgery.
Basking Ridge, New JerseyAges 50 years+ - NCT07482384Recruiting
Support program for young women with early-stage breast cancer
This study tests a mobile health program that provides support and information to young women with early-stage breast cancer who are on hormone therapy. The goal is to help you stay on your treatment and manage side effects.
Boston, MassachusettsAges 18–49 - 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 - 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 - NCT06805812Recruiting
Predicting outcomes of CDK4/6 inhibitors plus hormone therapy for advanced breast cancer
This study looks at how well a type of targeted therapy (called CDK4/6 inhibitors) combined with hormone therapy works as the first treatment for advanced breast cancer that is hormone receptor-positive and HER2-negative. Researchers want to find patterns that could help predict which patients benefit most.
AvianoAges 18 years+ - NCT07443774Recruiting
Sticking with hormone and CDK4/6 therapy after breast cancer surgery
This study is looking at how well people stick to a treatment plan that combines hormone therapy with a pill called a CDK4/6 inhibitor after surgery for early-stage breast cancer. The goal is to learn more about adherence so doctors can help patients stay on track.
GrenobleAges 18 years+ - NCT07432178RecruitingPhase 3
Targeted pill to skip chemo for high-risk breast cancer
This trial tests whether adding a targeted pill (dalpiciclib) to standard hormone therapy can safely replace chemotherapy for women with small, hormone-positive, high-risk breast cancers.
ShanghaiAges 18–70 - NCT07405801RecruitingPhase 2
Inavolisib plus ribociclib plus fulvestrant for advanced breast cancer
This trial tests a combination of three drugs (inavolisib, ribociclib, and fulvestrant) compared to a placebo plus two of the drugs (ribociclib and fulvestrant) for people with advanced hormone receptor-positive breast cancer who have not had prior treatment for advanced disease. The goal is to see if adding inavolisib improves outcomes.
Anaheim, CaliforniaAges 18 years+ - NCT07401537RecruitingPhase 2
Comparing two schedules of immunotherapy for advanced triple-negative breast cancer
This trial tests whether giving immunotherapy less often (extended dose intervals) works as well as the standard schedule for people with advanced triple-negative breast cancer who have already completed 6 cycles of first-line treatment. It aims to see if a longer break between doses can be just as effective with fewer hospital visits.
Guangzhou, GuangdongAges 18–70 - 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 - NCT06642545RecruitingPhase 2
New targeted drug combo for HER2-low breast cancer
This trial tests a new combination of targeted drugs (Disitamab Vedotin and RC148) against a standard chemotherapy (Abraxane) with or without an immunotherapy drug (Toripalimab) for advanced breast cancer that is HER2-low and hormone receptor-negative. The goal is to see if the new combination works better at shrinking tumors and slowing cancer growth.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07389408Recruiting
Early breast cancer treatment patterns study
This study observes how doctors treat early breast cancer and what outcomes patients have. It's for people with hormone receptor-positive, HER2-negative breast cancer that hasn't spread to many lymph nodes.
AthensAges 18 years+ - NCT06259929RecruitingPhase 2
Neoadjuvant abemaciclib and giredestrant for early breast cancer
This trial tests a combination of two oral medications (abemaciclib and giredestrant) given before surgery to women with a common type of early breast cancer (hormone receptor-positive, HER2-negative). The goal is to see if this treatment can shrink the tumor before surgery.
Catania, CataniaAges 18 years+
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Common questions
- Are there clinical trials for er positive breast cancer?
- Yes. Clin2 currently lists 437 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.