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 441 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT06313983RecruitingPhase 3
Study of hemay022 plus hormone therapy for advanced breast cancer
This trial tests a new targeted drug (hemay022) combined with an aromatase inhibitor (a type of hormone therapy) for people with advanced breast cancer that is both hormone-receptor-positive and HER2-positive. It may be an option if you've already tried trastuzumab or a similar treatment and it stopped working.
BeijingAges 18 years+ - NCT06324240RecruitingPhase 1
Personalized vaccine plus immunotherapy for triple-negative breast cancer
This trial tests a personalized vaccine made from your tumor combined with immunotherapy drugs (pembrolizumab or ipilimumab) for triple-negative breast cancer. It aims to help your immune system recognize and attack cancer cells.
Atlanta, GeorgiaAges 18 years+ - NCT06335069RecruitingPhase 2
Comparing two PET tracers in ER-positive breast cancer
This trial compares two types of PET scans to see which one better detects ER-positive breast cancer. The results could help doctors choose the best scan for tracking your cancer.
MaastrichtAges 18 years+ - NCT06341621RecruitingPhase 3
Skipping chemo for ER+/HER2- breast cancer with 1–3 positive nodes
This trial tests whether skipping chemotherapy is safe for women with a specific type of early-stage breast cancer (ER-positive, HER2-negative) that has spread to 1–3 lymph nodes. Instead of chemo, you would receive a targeted pill called abemaciclib after standard hormone therapy.
ShanghaiAges 18–80 - NCT06362616Recruiting
Pre-surgery partial breast radiation for recurrent breast cancer
This trial tests a shorter course of radiation to just part of the breast before surgery for women who have had breast cancer return in the same breast. It's for those who have already had radiation to that breast and have a specific type of cancer (ER+, HER2-).
AmsterdamAges 51 years+ - NCT06389006RecruitingPhase 2
Combination therapy before surgery for HER2-low, hormone-positive breast cancer
This trial tests a combination of two drugs (disitamab vedotin and toripalimab) followed by chemotherapy before surgery for people with a specific type of breast cancer that is hormone receptor-positive and HER2-low. The goal is to see if this treatment can shrink the tumor and improve outcomes.
Shanghai, Fudan University Shanghai Cancer CenterAges 18 years+ - 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+ - NCT06401889Recruiting
Skin care program for breast cancer survivors on hormone therapy
This study tests whether a skin care program can improve the appearance of your skin and your quality of life while you take an aromatase inhibitor (a hormone therapy) after breast cancer treatment. It is designed for women who are starting this type of therapy for the first time.
Jacksonville, FloridaAges 18 years+ - NCT06434064RecruitingPhase 2
Tamoxifen and chemotherapy for triple negative breast cancer
This trial tests a combination of tamoxifen (a hormonal therapy) and pegylated liposomal doxorubicin (a type of chemotherapy) for people with triple negative breast cancer that has spread or cannot be removed by surgery. It aims to see if this combination can help people whose cancer has not responded to at least two prior treatments.
Buffalo, New YorkAges 18 years+ - NCT06445738Recruiting
Can some women safely skip radiation after breast cancer surgery?
This trial is for women 50 and older with early-stage, hormone-positive or HER2-positive breast cancer. It tests whether it is safe to skip radiation therapy after a lumpectomy if an MRI before surgery shows the breast tissue looks a certain way.
San Francisco, CaliforniaAges 50 years+ - NCT06450314RecruitingPhase 2
De-escalating treatment for advanced HER2-positive breast cancer
This trial tests whether it's safe to reduce or stop some cancer treatments for people whose advanced HER2-positive breast cancer has been well-controlled for at least 2 years and has no detectable cancer cells in blood tests.
RennesAges 18 years+ - NCT06471673RecruitingPhase 1/Phase 2
BRIA-OTS cellular immunotherapy for metastatic breast cancer
This study tests an investigational cellular immunotherapy called BRIA-OTS for people with metastatic breast cancer that has spread and is no longer responding to standard treatments. It aims to help the immune system fight cancer cells.
Santa Monica, CaliforniaAges 18 years+ - NCT06488378RecruitingPhase 1
Axatilimab and olaparib for BRCA/PALB2-mutated breast cancer
This trial tests combining two drugs – axatilimab and olaparib (a PARP inhibitor) – for people with advanced HER2-negative breast cancer that carries a BRCA or PALB2 gene mutation. The goal is to see if this new combination is safe and effective.
Boston, MassachusettsAges 18 years+ - 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+ - NCT06517212RecruitingPhase 2
Tirzepatide for weight loss in MRD-positive early breast cancer
This study tests whether the weight-loss drug tirzepatide (Mounjaro) can help prevent breast cancer from coming back in people who are overweight and have a sign of leftover cancer cells in their blood (called MRD-positive). You must have already finished at least one year of hormone therapy for early-stage breast cancer.
Dallas, TexasAges 18 years+ - NCT06533826RecruitingPhase 2
Testing two antibody drugs for HER2-low breast cancer
This trial tests two antibody-drug conjugates (Enhertu and Datroway) for breast cancer that is HER2-low or HER2-0. It aims to find the best treatment sequence for people whose cancer has stopped responding to prior therapy.
Birmingham, AlabamaAges 18 years+ - NCT06545682RecruitingPhase 1
Study of alpelisib and pembrolizumab for advanced breast cancer or melanoma
This trial tests a combination of two drugs, alpelisib and pembrolizumab, for people with advanced triple-negative breast cancer or melanoma that has spread. The goal is to see if the combination can help shrink tumors, including those that have spread to the brain.
Houston, TexasAges 18 years+ - NCT06547840RecruitingPhase 1
Study of MOv18 IgE for ovarian, endometrial, and breast cancers with a specific marker
This trial tests a new antibody treatment called MOv18 IgE for patients with advanced ovarian, endometrial, or triple-negative breast cancers that have a protein called folate receptor alpha (FRα) on their tumor cells. The goal is to see if the treatment is safe and effective.
BristolAges 18 years+ - NCT06568692RecruitingPhase 2
Study of PCS6422 with capecitabine for advanced breast cancer
This trial tests a new drug combination (PCS6422 plus capecitabine) for people with advanced or metastatic breast cancer that has not responded to other treatments. The goal is to see if adding PCS6422 can make the chemotherapy work better.
Tucson, ArizonaAges 18 years+ - NCT06444269RecruitingPhase 2
Precision radiation before surgery for early hormone-positive breast cancer
This trial tests a focused radiation treatment before surgery for early-stage breast cancer that is hormone receptor positive and HER2 negative. The goal is to give precise radiation only to the tumor, with the hope of reducing side effects and improving outcomes.
Dallas, TexasAges 18 years+ - NCT06606730RecruitingPhase 3
Personalized pembrolizumab after strong chemo response for early triple-negative breast cancer
This trial is for people with early triple-negative breast cancer who had a strong response to chemotherapy combined with pembrolizumab before surgery. It aims to find the best way to continue using pembrolizumab after surgery to reduce the risk of cancer coming back.
BrusselsAges 18 years+ - NCT06610565Recruiting
Fasting-mimicking diet for breast cancer side effects
This study tests if a special diet that mimics fasting can help reduce side effects from hormone therapy (aromatase inhibitors) in women with breast cancer. The diet is a low-calorie meal plan designed to lower cholesterol and improve well-being.
Milan, ItalyAges 18 years+ - 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+ - NCT06649331RecruitingPhase 2
Re-trying antibody-drug conjugates for advanced breast cancer
This study looks at whether giving a different antibody-drug conjugate (ADC) after a previous one can help people with advanced or metastatic breast cancer. It aims to find new options for patients who have already had ADC treatment.
Shanghai, Shanghai MunicipalityAges 18 years+
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Common questions
- Are there clinical trials for er positive breast cancer?
- Yes. Clin2 currently lists 441 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.