Clinical trials
Breast cancer clinical trials
Cancer that forms in the cells of the breast, the most common cancer in women. We’re tracking 2,477 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT05642897Recruiting
Mind program for women receiving breast cancer radiotherapy
This trial tests a “Mind Programme” designed to support women with breast cancer who are currently receiving radiation treatment. It may help with emotional well-being during radiotherapy, but you must meet specific health and language requirements.
CoimbraAges 18–70 - NCT05417867Recruiting
Tracking gut bacteria changes and nausea during chemo
This study looks at how changes in the gut “microbiome” (your gut bacteria) relate to fatigue and chemotherapy-induced nausea in people with early-stage breast cancer. It may help doctors better understand why nausea and fatigue happen and how to predict or manage them during treatment.
Scottsdale, ArizonaAges 20 years+ - NCT05460780Recruiting
Tissue device study for breast reconstruction after mastectomy
This first-time-in-humans study tests a tissue-engineering chamber called MATTISSE® to help the healing of breast reconstruction using specific tissue flaps after mastectomy for cancer. If you qualify, you would be assessed for safety and how well the reconstructed tissue heals.
Strasbourg, FranceAges 18 years+ - NCT05586256Recruiting
Shorter radiation for early breast cancer after breast surgery
This trial studies giving whole-breast radiation in a shorter, more concentrated way after breast-conserving surgery. It aims to see if this “ultra-short” schedule is effective and safe for people with early breast cancer.
PerugiaAges 18–99 - NCT05464810RecruitingEarly Phase 1
Letrozole with or without a cholesterol drug for early breast cancer
This early-phase study tests whether adding simvastatin to letrozole can improve outcomes in people with stage I–III breast cancer that grows with hormone signals (hormone receptor positive) and does not have HER2. It looks mainly at whether the approach is safe and useful for this specific breast cancer type.
Atlanta, GeorgiaAges 18 years+ - NCT05417308RecruitingEarly Phase 1
Minoxidil for hair loss from breast cancer hormone therapy
This early-phase study tests whether using minoxidil as a lotion (topical) or by mouth (oral) can improve hair loss caused by breast cancer hormone (endocrine) therapy. It may help you keep or regrow hair while continuing your cancer treatment.
Columbus, OhioAges 18 years+ - NCT06334354Recruiting
Thinking and memory changes in older breast cancer survivors
This study looks at how thinking and memory changes as you age, and whether having had breast cancer affects those changes. You will do computer tasks and answer questions to help researchers understand the connection between aging, breast cancer treatment, and cognitive health.
Basking Ridge, New JerseyAges 60–80 - NCT04985266RecruitingPhase 2
Watch blood DNA for early breast cancer return, then add palbociclib
This study checks for early signs that ER-positive, HER2-negative breast cancer may be coming back by testing your blood for cancer DNA. If signs are found, it tests whether adding palbociclib plus fulvestrant works better than standard hormone therapy alone to prevent recurrence.
AngersAges 18 years+ - NCT05595499RecruitingPhase 2
Fisetin for better walking and strength in breast cancer survivors
This study tests whether fisetin (a natural compound) can improve physical function, like walking ability, in breast cancer survivors who feel frail. It may help strengthen muscles and improve daily activity after treatment.
Alhambra, CaliforniaAges Any age - NCT04836156RecruitingPhase 1/Phase 2
Personalized pre-surgery treatment for HER2-negative early breast cancer
This study tests a treatment plan chosen using lab drug testing on a patient’s tumor (in a dish). It may help improve outcomes for people with early breast cancer that is HER2-negative by matching therapy to what the tumor seems sensitive to.
BeijingAges 18–75 - NCT05259410Recruiting
Time-restricted eating during breast cancer chemotherapy
This trial studies whether time-restricted eating (eating only within certain hours) during breast cancer chemotherapy is safe and helpful. Researchers want to see if it improves chemotherapy outcomes and side effects for people with stage I–III breast cancer.
Chicago, IllinoisAges 25–99 - NCT04517838Recruiting
Testing immune responses to anti-HER2 breast cancer treatments
This study looks at how your immune system reacts to anti-HER2 treatments in people with HER2-positive breast cancer. It may help doctors understand who responds best by studying immune signals in blood (and sometimes tissue) during or after treatment.
Jacksonville, FloridaAges 18 years+ - NCT04329065RecruitingPhase 2
Vaccine with targeted breast cancer drugs before surgery
This Phase 2 trial tests whether adding a cancer vaccine (with GM-CSF) to standard HER2-targeted chemotherapy before surgery improves treatment outcomes for HER2-positive breast cancer. If you join, you’ll receive planned medicine before surgery to treat the tumor, then continue with the study schedule.
Seattle, WashingtonAges 18 years+ - NCT03797482Recruiting
Tracking low oxygen around breast cancer surgery
This study measures low oxygen that can happen during the time around breast cancer surgery. It may help doctors understand why this happens and how to improve care around the operation.
Mumbai, MaharashtraAges 18 years+ - NCT03474822RecruitingPhase 1/Phase 2
Plasmodium immune treatment for breast and liver cancers
This early-phase study tests an immune-based treatment (using Plasmodium) for people with advanced breast cancer or advanced liver cancer. It aims to see whether the treatment is safe and whether it can help the body’s immune system fight the cancer.
Guangzhou, GuangdongAges 18–70 - NCT07120100Recruiting
TMS for nerve pain from cancer chemo in breast/gyne cancer survivors
This trial tests if transcranial magnetic stimulation (TMS), a noninvasive brain treatment, can reduce nerve pain caused by chemotherapy in women who have had breast or gynecologic cancer. You may be eligible if you have ongoing nerve pain that hasn't been helped by standard pain medications.
Salt Lake City, UtahAges 18 years+ - NCT06065748RecruitingPhase 3
New hormone therapy for advanced breast cancer after prior treatment
This trial tests a new oral hormone therapy, giredestrant, against a standard hormone therapy (fulvestrant) when both are given with a CDK4/6 inhibitor. It is for people with advanced ER-positive, HER2-negative breast cancer that has come back after initial hormone therapy, and who have not yet had other treatments for advanced disease.
Daphne, AlabamaAges 18 years+ - NCT06035679Recruiting
Combination therapy before surgery for HER2-positive breast cancer
This trial tests a combination of targeted therapies and chemotherapy given before surgery for HER2-positive breast cancer. It aims to see if this approach helps shrink tumors and improve outcomes.
Fuzhou, FujianAges 18–75 - NCT03390894Recruiting
Long-term follow-up of early breast cancer study participants
This study follows people who previously took part in GEICAM early breast cancer trials to learn about long-term outcomes. It may help doctors understand what happens over time and improve future care.
Pamplona, NavarreAges 18 years+ - NCT07121972Recruiting
Validating AI for breast cancer risk prediction
This trial uses an AI model called Mirai to identify women at high risk for breast cancer based on their mammograms. If you are eligible, you may be invited for a breast MRI to better understand your risk.
San Diego, CaliforniaAges 40–89 - 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+ - NCT06179303RecruitingPhase 2
Imaging to predict response to abemaciclib for advanced breast cancer
This trial tests if a special PET scan can predict how well the drug abemaciclib works for people with advanced hormone receptor-positive, HER2-negative breast cancer. If you qualify, you would receive abemaciclib and have imaging scans to see if your cancer responds.
St Louis, MissouriAges 18 years+ - NCT05759572RecruitingPhase 2
Apatinib plus hormone therapy for advanced breast cancer
This Phase 2 study tests whether apatinib combined with a CDK4/6 inhibitor and hormone therapy can better control advanced hormone receptor–positive, HER2-negative breast cancer. It may help shrink tumors or slow their growth, especially in cases that can’t be fully treated with surgery or radiation.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT06723990Recruiting
HER2 breast cancer treatment decision study
This study tests a tool called HER2DX to help doctors choose the best treatment for early stage HER2 positive breast cancer. It may help tailor therapy before or after surgery.
Milan, ItalyAges 18 years+
Hear when a new Breast cancer trial opens
We’ll email you when one opens — at most once a week, no account needed, unsubscribe anytime.
Common questions
- Are there clinical trials for breast cancer?
- Yes. Clin2 currently lists 2,477 recruiting 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 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 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.