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 438 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05095207RecruitingPhase 1/Phase 2
Abemaciclib and bicalutamide for HER2-negative metastatic breast cancer
This Phase 1/2 trial tests whether combining abemaciclib with bicalutamide can slow or shrink HER2-negative, androgen receptor–positive (AR-positive) metastatic breast cancer. It mainly looks at safety and side effects, and also whether the combination can help patients with this type of breast cancer.
New York, New YorkAges 18–90 - NCT05837455RecruitingPhase 2
Biomarker-guided treatment for early breast cancer before surgery
This trial looks at whether using tumor test results (biomarkers) can help guide the best hormone treatment and chemotherapy before surgery. It focuses on people with stage II or III, ER-positive, HER2-negative breast cancer, with the goal of improving how well the tumor responds before it is removed.
St Louis, MissouriAges 18 years+ - NCT07164976RecruitingPhase 1/Phase 2
Ribociclib for advanced HR+ HER2- breast cancer
This trial tests a new combination of ribociclib and anastrozole as a first treatment for advanced hormone receptor-positive, HER2-negative breast cancer that has not been treated before. It may help if you have not received any prior therapy for metastatic disease.
NagoyaAges 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+ - 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 - 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 - NCT07391774RecruitingPhase 3
Hormone therapy with or without chemo for early breast cancer
This trial tests whether skipping chemotherapy and using only hormone therapy with a drug called ribociclib works as well as chemotherapy followed by hormone therapy with ribociclib for certain early breast cancers that have a low risk of coming back.
Jonesboro, ArkansasAges 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+ - NCT06195709RecruitingPhase 3
Study of PET imaging and blood tests for ER+ HER2- metastatic breast cancer
This trial tests a new imaging technique (18F-FES PET/CT) along with blood markers to guide treatment for metastatic breast cancer that is ER-positive and HER2-negative. It's for people whose cancer progressed on first-line hormone therapy and who are starting a second line of hormone therapy.
BayonneAges 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+ - NCT05491226RecruitingPhase 2
Pembrolizumab plus radiation and myeloid-targeting for high-risk breast cancer
This trial studies whether adding pembrolizumab (an immune “unlocking” drug) to radiation and another treatment that targets certain immune cells can improve outcomes for women with high-risk, early-stage triple negative breast cancer. You may be considered if your cancer has signs that it may respond less to immunotherapy on its own.
Los Angeles, CaliforniaAges 18 years+ - NCT07371585RecruitingPhase 2
Trastuzumab Deruxtecan for first-line HER2-positive advanced breast cancer
This trial tests a targeted therapy called Trastuzumab Deruxtecan (T-DXd) for people with HER2-positive breast cancer that has spread or cannot be removed. It is for those who have not yet received any chemotherapy or HER2-targeted treatment for metastatic disease. The study also focuses on managing side effects early, using digital tools to track symptoms.
VillejuifAges 18 years+ - 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+ - NCT07366112RecruitingPhase 2
CDK4/6 inhibitor plus hormone therapy before breast cancer surgery
This trial tests a combination of a CDK4/6 inhibitor (a type of targeted therapy) with hormone therapy given before surgery for early-stage breast cancer that is hormone receptor-positive and HER2-negative. It aims to see if this approach can shrink tumors and improve outcomes.
Beijing, Beijing MunicipalityAges 18–75 - NCT07218432Recruiting
TheraBionic device study for hormone-positive breast cancer
This trial tests a device called TheraBionic P1, which uses low-level radiofrequency energy, for women with early-stage hormone receptor-positive, HER2-negative breast cancer. It is given before surgery to see if it can help shrink the tumor.
Clarkston, MichiganAges 22 years+ - NCT06889688RecruitingPhase 3
New drug combo vs. chemo for advanced triple-negative breast cancer
This trial tests a new combination of three drugs (camrelizumab, apatinib, and eribulin) against the standard chemotherapy chosen by your doctor. It's for people with advanced triple-negative breast cancer that has gotten worse after previous treatments.
Guangzhou, GuangdongAges 18–70 - NCT05982093RecruitingPhase 2
Elacestrant with or without triptorelin for premenopausal breast cancer
This trial tests a new hormone-blocking pill (elacestrant) with or without a shot that temporarily stops ovaries (triptorelin) for premenopausal women with early-stage, hormone-sensitive breast cancer. It aims to find a gentler treatment option before surgery.
Badalona, BarcelonaAges 35 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+ - NCT07310420RecruitingPhase 1
Evaluating ovarian suppression with ZOLADEX in premenopausal breast cancer
This trial tests a medication (ZOLADEX) to suppress ovarian function in premenopausal women with hormone receptor-positive breast cancer, either early-stage or advanced. The goal is to see how well it works and how safe it is.
Hot Springs, ArkansasAges 18–55 - NCT07314073RecruitingPhase 2
A PET scan to find hidden spread in slow-growing breast cancer
This trial is testing a special PET scan (18F-FES PET/CT) to see if it can find distant cancer spread in women with a slow-growing, estrogen receptor-positive, stage III breast cancer. The goal is to find out whether this imaging test can detect hidden metastases better than standard scans.
SeoulAges 19 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+ - NCT07281833RecruitingPhase 3
Testing capivasertib with hormone therapy for advanced breast cancer
This trial tests a new oral drug called capivasertib combined with standard hormone therapy for people with advanced breast cancer that is HR-positive and HER2-negative. It is for those whose cancer has progressed on previous hormone therapy and who have a specific gene change (PIK3CA, AKT1, or PTEN).
AnderlechtAges 18 years+ - NCT07285382RecruitingPhase 2
Dalpiciclib plus letrozole for advanced HR+ HER2- breast cancer
This trial tests a new combination of two drugs (dalpiciclib and letrozole) as a first treatment for advanced breast cancer that is hormone receptor positive and HER2 negative. It aims to find the best dose to slow or stop cancer growth.
Dalian, LiaoningAges 18–75
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.
ER Positive Breast Cancer trials by city
Studies with a site in or near these metro areas.
ER Positive Breast Cancer trials by state
Studies with a site anywhere in these states.
Common questions
- Are there clinical trials for er positive breast cancer?
- Yes. Clin2 currently lists 438 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.