Clinical trials
Breast clinical trials
Below are recruiting breast clinical trials, each written for real people, not researchers. We’re tracking 2,627 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05468034Recruiting
Exercise program for metastatic breast cancer using a phone
This trial studies how a supervised exercise program (with treadmill walking and phone tracking) affects people living with metastatic breast cancer. It may help by improving fitness and day-to-day ability, especially if you’re currently not meeting regular exercise goals.
New Haven, ConnecticutAges 18 years+ - NCT05455619RecruitingPhase 1/Phase 2
Targeted drugs for PI3K-altered, HR+/HER2- breast cancer
This Phase 1/2 trial tests how well a combination of targeted medicines works for advanced or returning HR+/HER2- breast cancer that has a PI3K pathway change (such as PIK3CA, PTEN, or AKT1). It may help by blocking growth signals in the cancer and is especially for people whose cancer has progressed after hormone therapy and a CDK4/6 inhibitor.
Loma Linda, CaliforniaAges 18 years+ - NCT05386108RecruitingPhase 1/Phase 2
Test abemaciclib plus elacestrant for breast cancer brain spread
This trial studies whether the combination of abemaciclib and elacestrant can slow or shrink ER-positive, HER2-negative breast cancer that has spread to the brain. It is designed for people whose cancer has progressed despite prior hormone (endocrine) treatment.
Fullerton, CaliforniaAges 18 years+ - NCT05376878RecruitingPhase 4
PET/MRI scan to guide treatment in HER2+ brain metastatic breast cancer
This trial tests a special PET/MRI imaging scan using a labeled drug to help doctors evaluate HER2+ breast cancer that has spread to the brain. It focuses on patients who plan to receive fam-trastuzumab deruxtecan, a targeted cancer medicine, and aims to see how well the scan can support treatment decisions.
Duarte, CaliforniaAges 18 years+ - NCT05412225RecruitingPhase 1
Pre-surgery radiation, then mastectomy and immediate breast reconstruction
This Phase 1 study looks at giving radiation before surgery for people with locally advanced breast cancer, then performing a mastectomy and immediate reconstruction. It aims to see whether this combined approach can shrink the cancer before surgery and safely allow reconstruction afterward.
Basking Ridge, New JerseyAges 18 years+ - NCT05388149RecruitingPhase 2
Neratinib plus Kadcyla to treat leftover HER2 breast cancer
This trial studies whether adding neratinib to Kadcyla (T-DM1) can help eliminate “molecular residual disease,” meaning tiny traces of cancer left after surgery and standard HER2 treatment. It’s for adults with HER2-positive breast cancer who still test positive after a short course of Kadcyla, with no signs of cancer returning or spreading on scans.
Toronto, OntarioAges 18 years+ - NCT05404321Recruiting
Collecting tumor samples to study triple-negative breast cancer treatments
This study collects tumor tissue from people with early-stage triple-negative breast cancer before they start neoadjuvant chemotherapy. The goal is to help researchers test new therapies and look for markers that may predict who benefits.
CaenAges 18 years+ - NCT05406232Recruiting
Radiation study to track immune changes in breast cancer
This study gives a short course of radiation to the breast or chest wall and measures how your immune system responds. It may help doctors better understand which immune changes happen after radiation and how this could improve palliative (symptom-relieving) care.
Houston, TexasAges 18 years+ - NCT01840293Recruiting
Breast cancer study using tumor tissue to find key differences
This trial looks at breast cancer “proteins” and molecular features using tumor samples taken during surgery or biopsy. The goal is to better understand why breast cancers behave differently, which may help guide more personalized treatment in the future.
CorkAges 18 years+ - NCT05345821Recruiting
Study of side effects and satisfaction after silicone breast implants
This trial follows women who get their first breast implant surgery or a repeat (primary vs secondary) and records side effects and how satisfied they feel. It aims to better understand safety and satisfaction with smooth-surface silicone implants.
Santo André, São PauloAges 18 years+ - NCT05350722Recruiting
Single pre-surgery radiation for low-risk breast cancer
This trial tests a single, shorter course of radiation given before breast surgery for people with low-risk, hormone-receptor–positive breast cancer. It may help treat the breast tumor while reducing the number and length of radiation treatments.
SydneyAges 40 years+ - 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+ - NCT05305924RecruitingPhase 2
Fulvestrant plus abemaciclib for ER+, HER2− advanced breast cancer
This Phase 2 study tests whether adding abemaciclib to fulvestrant can slow or shrink ER-positive, HER2-negative metastatic breast cancer. It is mainly for people whose cancer has progressed despite prior treatment with a CDK4/6 inhibitor and an aromatase inhibitor.
Houston, TexasAges 18 years+ - NCT04965766RecruitingPhase 2
Study drug for HER2-negative, advanced breast cancer after prior treatment
This Phase 2 trial tests patritumab deruxtecan (U3-1402) in people with HER2-negative, hormone-receptor positive (HR+) breast cancer that cannot be removed by surgery or has spread. It’s for cancers that have progressed despite endocrine therapy plus a CDK4/6 inhibitor, aiming to shrink tumors and control the disease.
DijonAges 18 years+ - NCT05072314RecruitingPhase 3
Lidocaine drip after breast surgery to improve long-term pain
This Phase 3 study tests whether a long-running lidocaine (a numbing medicine) drip given around the time of breast surgery can improve long-term post-surgery pain and recovery. It may help people who have pain after mastectomy or breast-conserving surgery.
Kingswood, New South WalesAges 18 years+ - NCT05029999RecruitingPhase 1
Test drugs for HER2-negative advanced breast cancer
This Phase 1 trial tests a combination of immune-targeting drugs (a CD40 medicine and a substance that helps immune cells act) plus chemotherapy in people with HER2-negative advanced breast cancer that has progressed. It aims to find a safer dose and see whether the treatment can shrink tumors or slow the cancer.
Chicago, IllinoisAges 18–99 - NCT04749446Recruiting
Study of outcomes in breast sarcoma patients
This study looks at the medical details and outcomes of people with breast sarcoma. It may help doctors better understand what treatments and factors are linked to different results over time.
Bologna, BOAges 19 years+ - NCT04968964Recruiting
Monitoring test for CDK4/6 drugs in metastatic breast cancer
This study follows people with hormone receptor–positive, HER2-negative metastatic breast cancer who are taking CDK4/6 inhibitor treatment (with or without an added blood test called DiviTum®). The goal is to see how well the standard treatment is working and whether DiviTum® (a serum TK1 activity test) can help guide monitoring.
St Louis, MissouriAges 18 years+ - NCT04996316Enrolling by invitation
Breast cancer screening decision help for women 40–74
This trial tests a breast cancer screening risk and decision aid to help you and your clinician choose the right next steps for screening and referrals. You may benefit by getting clearer, personalized guidance based on your risk.
Portland, OregonAges 40–74 - NCT04771520RecruitingPhase 2
Avapritinib for tumors with specific KIT or PDGFRA changes
This Phase 2 trial studies avapritinib, a targeted medicine, for people whose cancer has specific KIT or PDGFRA genetic changes. It may help shrink or slow growth of certain advanced cancers, including some brain tumors, when standard treatments have not worked or for specific glioblastoma cases.
Houston, TexasAges 18 years+ - NCT04852887RecruitingPhase 3
Testing shorter breast radiation after low-risk hormone breast cancer
This Phase 3 trial studies whether “less intense” radiation can work as well as standard radiation for certain early-stage hormone receptor–positive, HER2-negative breast cancers that have a low Oncotype DX score. It may help reduce treatment burden while keeping cancer control strong.
Birmingham, AlabamaAges 50–70 - NCT04799535Recruiting
Imaging study to detect and monitor breast changes
This study tests special ultrasound and/or MRI imaging to better detect and track breast cancer and related changes over time. You may be asked to have scans around the time of biopsy or during treatment to help doctors see small blood-vessel changes in the breast.
Rochester, MinnesotaAges 18 years+ - NCT04768426RecruitingPhase 2
Watching DNA in blood while taking capecitabine after breast cancer
This trial checks how a blood test that looks for cancer DNA (ctDNA) changes during and after you take capecitabine after early triple-negative breast cancer. It aims to see whether these blood test results can help monitor the chance of the cancer coming back.
Stanford, CaliforniaAges 18 years+ - NCT04703244Recruiting
Testing patient tumor samples to create research models in breast cancer
This study collects tumor-related samples from people with invasive breast cancer who are having surgery after treatment before surgery. Researchers use your samples to create lab models (called PDX and organoids) to help study breast cancer and find better future treatments.
Rochester, MinnesotaAges 18 years+
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Common questions
- Are there clinical trials for breast?
- Yes. Clin2 currently lists 2,627 recruiting breast 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 breast 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 breast 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.