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
- NCT05899387Recruiting
Study fluid after breast surgery
This study looks at a problem called seroma, which is fluid buildup, after certain breast surgeries. It compares different situations where implants or tissue expanders are used, to better understand what to expect and how to manage it.
Augsburg, BavariaAges 18 years+ - NCT07174336RecruitingPhase 3
Testing Tersolisib with other treatments for advanced breast cancer
This trial tests a new study drug called Tersolisib combined with other anti-cancer treatments for people with advanced breast cancer that has a specific gene change (PIK3CA). The goal is to see if the combination can help shrink or slow the cancer.
Anchorage, AlaskaAges 18 years+ - NCT06640881RecruitingPhase 2
Repeat breast-conserving surgery with partial reirradiation
This trial tests a new approach for women whose breast cancer has returned in the same breast after earlier surgery and radiation. Instead of removing the whole breast, doctors will remove only the tumor again and give a small, focused dose of radiation before surgery, aiming to preserve the breast.
AmsterdamAges 50 years+ - NCT05056857Recruiting
Study immune-web changes in ER+ breast cancer on tamoxifen
This trial studies how the immune system forms “neutrophil extracellular traps” (immune web material) in people with ER-positive breast cancer who take tamoxifen. It aims to understand whether tamoxifen changes this immune activity over time, which may help explain how it works.
Houston, TexasAges 18 years+ - NCT05768932RecruitingPhase 1
Study drug for advanced cancers or relapsed AML
This Phase 1 trial tests BAL0891, a new study treatment, in people with advanced solid tumors that have run out of treatment options, or in relapsed/refractory acute myeloid leukemia (AML). The goal is to find a safe dose and see how well it may work in these hard-to-treat cancers.
New Haven, ConnecticutAges 18 years+ - NCT06008275RecruitingEarly Phase 1
Neratinib and ruxolitinib for metastatic triple-negative breast cancer
This early-phase trial tests a combination of two targeted drugs, neratinib and ruxolitinib, for people with metastatic triple-negative breast cancer who have already had standard chemotherapy. The goal is to see if the combination is safe and effective.
Dallas, TexasAges 18 years+ - NCT06086704RecruitingPhase 2
PET/MRI scan for PR-positive breast cancer before surgery
This trial tests a new PET/MRI scan (using a special tracer called 18F-FFNP) to see how it images progesterone-receptor-positive breast cancer before surgery. You would get the scan and then have your planned surgery.
Madison, WisconsinAges 18 years+ - NCT07622836Recruiting
Chemotherapy plus QL1706 for high-risk triple-negative breast cancer
This study tests whether adding a new immunotherapy drug called QL1706 to standard chemotherapy after surgery can help patients with aggressive triple-negative breast cancer that has spread to lymph nodes. The goal is to see if this combination prevents cancer from coming back.
Nanjing, JiangsuAges 18–75 - NCT04025164Recruiting
Shorter vs standard breast radiation after lumpectomy
This study compares a shorter course of radiation to a standard longer course after breast-conserving surgery (lumpectomy). It’s meant to see which schedule works just as well while focusing on safety and cancer control.
Guiyang, GuizhouAges 18–70 - NCT05978648RecruitingPhase 2
Trilaciclib for early-stage HR-negative breast cancer after surgery
This trial tests if adding trilaciclib to standard chemotherapy after surgery can help people with hormone receptor-negative breast cancer. It aims to reduce side effects and improve treatment outcomes.
Guangzhou, GangdongAges 18 years+ - NCT07297667RecruitingPhase 1
CAR T-cell therapy for GPNMB-positive solid tumours
This trial tests a new immune cell therapy (CAR T-cells) that targets a protein called GPNMB found on some tumour types. It's for people with advanced alveolar soft part sarcoma, certain kidney cancers, or triple-negative breast cancer that hasn't responded to standard treatments.
Calgary, AlbertaAges 15 years+ - NCT06598046RecruitingPhase 2
Utidelone and Capecitabine for triple-negative breast cancer brain metastases
This trial tests a combination of two chemotherapy drugs (Utidelone and Capecitabine) for people with triple-negative breast cancer that has spread to the brain. The goal is to see if the combination can shrink or control the brain tumors.
Zhengzhou, HenanAges 18 years+ - NCT06081244RecruitingPhase 3
Testing sacituzumab govitecan with or without pembrolizumab for early triple-negative breast cancer
This trial tests a two-drug combination (sacituzumab govitecan and pembrolizumab) versus sacituzumab govitecan alone before surgery for low-risk, triple-negative breast cancer that hasn't spread. The goal is to see which approach works better at shrinking tumors.
Baden-Baden, Baden-WurttembergAges 18 years+ - NCT06544577Recruiting
Elacestrant for advanced ER+/HER2- breast cancer with ESR1 mutation
This trial tests an oral drug called elacestrant in women whose ER+/HER2- breast cancer has worsened after at least one hormone therapy. It is for those with a specific genetic change (ESR1 mutation) and advanced or metastatic disease.
Qionghai, HainanAges 18 years+ - NCT07332975Recruiting
Blood test for tumor DNA in early triple-negative breast cancer
This study is for people with early-stage triple-negative breast cancer (TNBC) that has not been treated yet. Researchers want to see if tracking tumor DNA in your blood can help guide treatment decisions. You would receive standard chemotherapy and surgery, plus give blood samples.
Pittsburgh, PennsylvaniaAges 18 years+ - NCT07467330RecruitingPhase 3
Breast cancer trial: Adding capecitabine to standard treatment
This trial tests if adding a chemotherapy drug called capecitabine to the combination of dalpiciclib and hormone therapy works better than dalpiciclib and hormone therapy alone for advanced breast cancer that is hormone receptor-positive and HER2-negative. It is for people who have not had these treatments before.
Fuzhou, FujianAges 18 years+ - NCT06382818Recruiting
Personalized breast radiation based on risk and side effects
This trial tests whether radiation therapy can be personalized based on your risk of the cancer coming back and your risk of side effects from radiation. Depending on those factors, you may receive a tailored radiation plan that could be more or less intense.
MontpellierAges 18 years+ - NCT06033287Recruiting
Real-world study of CDK4/6 inhibitors plus hormone therapy for advanced breast cancer
This study looks at how well CDK4/6 inhibitors combined with hormone therapy work in real-world settings for people with a certain type of advanced breast cancer (HR+/HER2-). It aims to understand the best treatment path and what happens next.
Changsha, HunanAges 18 years+ - NCT05464082RecruitingPhase 2
Collect tumor samples to guide early breast cancer recurrence care
This Phase 2 study tests a “precision” approach using tumor sample testing to help predict, prevent, and treat early metastatic recurrence in triple-negative or hormone-receptor–low, HER2-negative breast cancer. If you qualify, you’ll be asked to provide tumor tissue before (or in place of) standard chemotherapy, so researchers can learn which tumor features matter most.
Salt Lake City, UtahAges 18 years+ - NCT04819243RecruitingPhase 2
Test a BRCA-targeted drug plan for advanced ER-positive breast cancer
This Phase 2 study tests how well a treatment plan using palbociclib followed by talazoparib (and possibly atezolizumab) works in certain people with advanced ER-positive breast cancer. It may help by targeting cancer biology linked to BRCA/HRD changes and by strengthening how the cancer is controlled.
Seoul, Gannam-guAges 19 years+ - NCT07708571Recruiting
Coaching program for women on ribociclib and aromatase inhibitor
This study tests whether a coaching program based on personality types helps women with early-stage hormone receptor-positive, HER2-negative breast cancer stick to their treatment plan. Participants must be taking ribociclib (Kisqali) and an aromatase inhibitor, and their cancer must not have spread to other organs.
Augsburg, BavariaAges 18 years+ - NCT07278726Recruiting
Targeted removal of only suspicious lymph nodes for early breast cancer
This trial is testing a targeted surgical approach to remove only the suspicious lymph nodes under the arm for people with early-stage, hormone receptor positive, HER2 negative breast cancer. The goal is to see if this less extensive surgery is safe and effective when there is limited lymph node involvement.
Bologna, ItalyAges 18–90 - NCT05525767RecruitingPhase 4
Bevacizumab plus chemo before surgery for HER2-negative breast cancer
This trial studies whether adding bevacizumab (an anti-blood-vessel medicine) to chemotherapy before surgery improves treatment outcomes for people with HER2-negative breast cancer. It’s mainly for tumors that are stage II to IIIC and have not had prior cancer treatment.
Shijiazhuang, HebeiAges 18 years+ - NCT07180693Recruiting
Breast cancer that returns after CDK4/6 inhibitor treatment
This study looks at patients whose breast cancer returns after starting a CDK4/6 inhibitor (like abemaciclib or ribociclib) along with hormone therapy. The goal is to understand why the cancer comes back and find better ways to treat it.
Bergamo, ItalyAges 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.