Clinical trials
ER+ Breast Cancer clinical trials
Below are recruiting er+ breast cancer clinical trials, each written for real people, not researchers. We’re tracking 562 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT07151911Recruiting
Study of drugs for high-risk early breast cancer
This study looks at the effectiveness of the drugs abemaciclib and olaparib plus hormone therapy for people with high-risk, hormone receptor-positive, HER2-negative early breast cancer. It aims to understand how well these treatments work in real-world settings.
Modena, ModenaAges 18 years+ - NCT07294508RecruitingPhase 2/Phase 3
Testing a new drug combo for HER2-positive advanced breast cancer
This trial tests two study drugs, HLX22 and HLX87, together for people with HER2-positive breast cancer that has spread or come back. It may be an option if you haven't yet had chemotherapy or HER2-targeted therapy for advanced disease.
Beijing, Beijing MunicipalityAges 18 years+ - NCT07383818RecruitingPhase 2
Neoadjuvant therapy with trastuzumab rezetecan and toripalimab for HR+/HER2-low breast cancer
This trial tests a combination of two drugs (trastuzumab rezetecan and toripalimab) given before surgery to treat a specific type of breast cancer that is hormone-receptor-positive and HER2-low. It aims to see if this treatment can improve outcomes for patients who have not had prior cancer treatment.
HarbinAges 18–70 - NCT07647016RecruitingPhase 2
New Drug Combination for Advanced Hormone-Receptor-Positive Breast Cancer
This study tests two drugs together—trastuzumab deruxtecan and ivonescimab—for advanced breast cancer that is hormone-receptor-positive but HER2-negative or HER2-low. These drugs work by targeting cancer cells in different ways and may help slow or shrink tumors in patients whose cancer has progressed after earlier treatments.
Shanghai, Shanghai MunicipalityAges 18 years+ - NCT07214532Recruiting
Using a blood test to guide breast cancer therapy
This study tests whether a blood test can help decide when to start additional hormone-blocking therapy for early-stage breast cancer. It aims to see if starting therapy only when the test detects cancer DNA is as effective as giving it to everyone.
Phoenix, ArizonaAges 18 years+ - 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+ - NCT07078604RecruitingPhase 2
Vaccine with chemotherapy for advanced triple-negative breast cancer
This trial tests a cancer vaccine called STEMVAC combined with chemotherapy in people with a type of breast cancer that has spread and does not have certain markers. The goal is to see if adding the vaccine helps the chemotherapy work better.
Seattle, WashingtonAges 18 years+ - NCT03769415Recruiting
Using tumor gene data to improve treatment in metastatic breast cancer
This trial studies your tumor’s gene activity and breast cancer subtype to help guide treatment choices. It mainly looks at whether analyzing “RNA expression” and tumor subtype can improve how therapy is optimized during metastatic breast cancer care.
Chapel Hill, North CarolinaAges 18–99 - NCT05318469RecruitingPhase 1/Phase 2
Ivermectin with immunotherapy for metastatic triple-negative breast cancer
This trial studies whether ivermectin, given together with immunotherapy (balstilimab or pembrolizumab), can help treat metastatic triple-negative breast cancer. It mainly looks at safety first, and may also explore how well the treatment works for people whose cancer has spread.
Los Angeles, CaliforniaAges 18 years+ - NCT05491083RecruitingPhase 1/Phase 2
Pembrolizumab plus ADG106 for advanced triple-negative breast cancer
This early-phase study tests pembrolizumab (an immune therapy) combined with ADG106 in people with advanced solid tumors, and specifically triple-negative breast cancer. It looks at whether the treatment can shrink tumors and improve outcomes for cancers that are progressing despite prior therapy.
SingaporeAges 21–99 - NCT06492759RecruitingPhase 2
High-dose radiation with pembrolizumab and chemo for pd-l1 positive tnbc
This trial tests giving high-dose radiation along with the immunotherapy drug pembrolizumab and chemo to people with a specific subtype of advanced breast cancer (PD-L1 positive triple negative). It may help shrink tumors and keep them from growing.
Atlanta, GeorgiaAges 18 years+ - NCT06551116Recruiting
Better HER2 testing for HER2-low breast cancer on Enhertu
This study looks at using a more detailed lab test to measure HER2 levels in people with HER2-low metastatic breast cancer who are starting or have just started treatment with Enhertu. The goal is to see if this test can help doctors better understand who might benefit from Enhertu.
San Francisco, CaliforniaAges 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+ - NCT06731140RecruitingPhase 2
Reversing immune resistance in HER2-negative breast cancer
This trial tests a new treatment to see if it can reverse resistance to immunotherapy in people with HER2-negative breast cancer. It's for patients whose cancer has gotten worse after immunotherapy.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT07652242RecruitingPhase 1
A RNA vaccine for stage 2-3 triple negative breast cancer
This trial tests an experimental RNA vaccine (ITI-5000) designed to help your immune system fight triple-negative breast cancer. It is for people with stage 2 or 3 disease who have already had some cancer treatment.
Grand Rapids, MichiganAges 18 years+ - NCT04303988RecruitingPhase 2
Trial for brain metastases from triple-negative breast cancer
This Phase 2 study tests a treatment for people with triple-negative breast cancer that has spread to the brain. It’s designed for situations where the cancer can’t be safely cured with surgery or focused radiation.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT04722978RecruitingPhase 3
Chemo plus moxifloxacin for metastatic triple-negative breast cancer
This trial tests whether adding moxifloxacin (an antibiotic) to standard chemotherapy helps people with metastatic triple-negative breast cancer live longer or respond better. You may qualify if your cancer has the right lab markers and you haven’t had treatment for metastatic disease yet.
Guangzhou, GuangdongAges 18–70 - NCT05900895RecruitingPhase 1
Estradiol plus olaparib for ER-positive breast cancer
This early-stage study tests whether combining estradiol (a form of estrogen) with olaparib (a targeted cancer medicine) can control ER-positive, HER2-negative breast cancer that has spread or come back. It may help by attacking cancer cells in a new way after standard hormone-based treatments.
Lebanon, New HampshireAges 18 years+ - NCT05909332RecruitingPhase 3
Tested antivascular drug plus chemo versus chemo alone for TNBC
This Phase 3 trial compares an “anti-blood-vessel” drug added to chemotherapy versus chemotherapy alone for people with stage II–IIIC triple-negative breast cancer that has been completely removed with surgery. The goal is to see if adding the study drug improves outcomes after surgery (adjuvant treatment).
Beijing, Beijing MunicipalityAges 18–70 - NCT05989828RecruitingPhase 1
Engineered immune cells for advanced triple-negative breast cancer
This trial tests a personalized treatment where your own immune cells are modified to recognize and attack cancer cells that have a specific marker called NY-ESO-1. It is for people with triple-negative breast cancer that has not responded to at least two prior treatments.
Los Angeles, CaliforniaAges 18 years+ - NCT06460298RecruitingPhase 1/Phase 2
ProAgio and gemcitabine for triple-negative breast cancer that has spread
This trial tests a new drug called ProAgio combined with the chemotherapy gemcitabine for people with triple-negative breast cancer that has spread to other parts of the body. The goal is to see if this combination can shrink tumors or slow the cancer's growth.
Atlanta, GeorgiaAges 18 years+ - NCT06738966RecruitingPhase 1
BL0175 for advanced HR-positive breast or gynecologic cancer
This trial tests a new drug called BL0175 for women with certain types of advanced breast, ovarian, or endometrial cancer that have stopped responding to hormone therapy. The goal is to see if the drug can help shrink tumors or slow down the cancer.
Changchun, JilinAges 18 years+ - NCT06762483Recruiting
Blood test for gene changes in advanced breast cancer
This trial uses a simple blood test to look for two specific gene changes (ESR-1 and gBRCA) in people with hormone receptor-positive, HER2-negative breast cancer that has spread. It aims to detect these mutations earlier and help guide future treatment decisions.
Milan, ItalyAges 18 years+ - NCT06831955RecruitingPhase 2
Lifestyle program to boost chemo before breast cancer surgery
This trial tests whether a structured lifestyle program (diet and exercise) can make standard chemotherapy before surgery work better for triple-negative breast cancer. It looks at how the program affects your body’s response to treatment and your overall health.
AntwerpAges 18 years+
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Common questions
- Are there clinical trials for er+ breast cancer?
- Yes. Clin2 currently lists 562 recruiting er+ 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+ 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+ 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.