Clinical trials
Breast Cancer Stage I clinical trials
Below are recruiting breast cancer stage i clinical trials, each written for real people, not researchers. We’re tracking 1,170 recruiting studies, each written for real people, not researchers, below.
Recruiting studies
- NCT03053193Recruiting
Testing gene activity to guide breast cancer treatment
This study links breast tumor test results from MammaPrint and optional BluePrint (and full genetic data) with real-world clinical information to understand which new gene activity patterns matter. It may help future patients by improving how doctors use these tests to guide care.
Birmingham, AlabamaAges 18 years+ - NCT06523894Recruiting
Radiation therapy for breast cancer patients over 70
This trial tests a precise type of radiation called SBRT for breast cancer in patients aged 70 or older who cannot have surgery or choose not to. The goal is to see if this treatment can effectively control the tumor without surgery.
GenevaAges 70 years+ - NCT06481956Enrolling by invitationPhase 2
T-DM1 plus a CDK4/6 inhibitor (ribociclib) for HER2-positive breast cancer
This clinical trial tests a combination of two targeted therapies for people with HER2-positive breast cancer that has spread or come back. The goal is to see if adding ribociclib to T-DM1 is safe and effective after other treatments have been used.
Hangzhou, ZhejiangAges 18–75 - NCT06427226RecruitingPhase 2
Testing dapagliflozin to protect the heart during breast cancer chemo
This trial tests whether a daily pill called dapagliflozin can help protect the heart from damage caused by doxorubicin chemotherapy in people being treated for early-stage breast cancer. If you are starting doxorubicin and have a healthy heart, this might lower your risk of heart problems later.
Alexandria, Bab SharqiAges 18–65 - NCT06439771RecruitingPhase 2
Testing YL202 for advanced breast cancer
This trial tests a new drug called YL202 for people with advanced breast cancer. It is for those who have already tried certain targeted treatments (HER2 or TROP2 antibody-drug conjugates) and they stopped working. The goal is to see if YL202 can help shrink tumors or slow cancer growth.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT06393374RecruitingPhase 3
Study of a new drug combination for residual TNBC after initial treatment
This trial tests a new combination of two drugs (sacituzumab tirumotecan and pembrolizumab) compared to standard chemotherapy for people with triple-negative breast cancer that did not fully respond to initial treatment. It aims to see if this combination helps prevent cancer from coming back.
Mobile, AlabamaAges 18 years+ - NCT06258993Recruiting
Exercise program for breast cancer survivors
This study tests a new approach to help breast cancer survivors become more physically active. You will be asked to participate in a program that uses a smartphone app and wear a monitor to track activity.
Lebanon, New HampshireAges 18 years+ - NCT05522959Recruiting
Exercise rehab for breast cancer recovery
This trial tests an exercise-based rehabilitation program for people who have had early-stage breast cancer and are finishing or currently getting standard treatments like chemotherapy, surgery, radiation, or targeted drugs. It may help improve heart and breathing fitness during recovery.
Toronto, OntarioAges 18 years+ - NCT06169371RecruitingPhase 4
Abemaciclib dose escalation for early breast cancer
This study tests whether women with early-stage HR+/HER2- breast cancer can safely take a higher dose of the drug abemaciclib (Verzenio) after surgery. The goal is to keep the treatment as strong as possible while managing side effects.
Chicago, IllinoisAges 18 years+ - NCT06123286RecruitingEarly Phase 1
Tart cherry and omega-3s for joint pain from hormone therapy
This study tests whether taking tart cherry and omega-3 supplements can help reduce joint pain and stiffness caused by aromatase inhibitors (a common breast cancer treatment). If you have bothersome joint pain while on this hormone therapy, you may be able to join.
Los Angeles, CaliforniaAges 18 years+ - NCT05921253RecruitingEarly Phase 1
Check a brain-heart device to reduce chemo heart risk
This early-phase study tests a “neuromodulation” device (stimulating nerves that may affect the heart and blood vessels) to help lower cardiovascular risks after certain cancer chemotherapy. It may be most relevant if you recently had an anthracycline-based treatment and also have other heart-risk factors.
Oklahoma City, OklahomaAges 18–99 - NCT05782686Recruiting
Shaving wound skin regularly after breast-conserving surgery
This study looks at whether regularly removing (shaving) small amounts of skin during recovery can improve surgical healing and outcomes. It focuses on people having breast-conserving surgery for certain early breast cancers.
L'Hospitalet de Llobregat, BarcelonaAges 18 years+ - NCT05693766RecruitingPhase 2
Gene test guides treatment for hormone-positive breast cancer
This trial studies whether a gene-signature test can help guide treatment choices for people with hormone receptor–positive (ER and/or PR) breast cancer that has spread or can’t be fully removed. It may help find the best therapy approach after prior hormone therapy and targeted cancer medicine.
Birmingham, AlabamaAges 18 years+ - 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+ - 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+ - NCT05496829Recruiting
Improving how people take breast-cancer and heart medicines
This trial tests an intervention to help improve how equitably people take their prescribed breast cancer hormone therapy and heart-related prevention medicines. It may help if you have had trouble taking these medications as directed.
New York, New YorkAges 18–99 - NCT05432856Recruiting
Track metabolic health habits during breast cancer treatment
This study follows how “metabolic health” patterns (like eating timing and daily activity) change over time during breast cancer care. It may help researchers learn which habit patterns are linked to better outcomes and comfort during chemotherapy.
Edmonton, AlbertaAges 18 years+ - NCT05232916RecruitingPhase 3
Vaccine for HER2-positive breast cancer after standard treatment
This trial tests a vaccine (GLSI-100) that may help prevent the return of HER2-positive breast cancer. It is given to patients who still had cancer cells after initial treatment with trastuzumab, or who had stage III disease and achieved a complete response.
Mobile, AlabamaAges 18–100 - NCT05192798RecruitingPhase 2
Albumin-bound chemo plus anti-blood-vessel drugs for TNBC
This Phase 2 study tests a chemotherapy called albumin-bound paclitaxel combined with medicines that block new blood vessel growth (antiangiogenic agents) for women with recurrent or metastatic triple-negative breast cancer. It aims to see whether this combination can better control cancer when it comes back or has spread.
Bengbu, AnhuiAges 18–80 - NCT05196087Recruiting
AI system to monitor cancer treatment progress
This trial tests a non-invasive, AI-based monitoring program for people with solid tumors. It aims to help track how you’re doing during or after curative-intent treatment, using information collected without extra procedures.
Toronto, OntarioAges 18 years+ - NCT04614194RecruitingPhase 2
Blood and tumor markers to test response to abemaciclib
This trial studies how the immune system and other body signals in blood and tumor tissue relate to how well abemaciclib works before breast cancer surgery. The goal is to learn who benefits most from this medicine and why.
Dallas, TexasAges 18 years+ - NCT05952453RecruitingPhase 2
New ovarian cancer treatment with chemo plus maintenance medicines
This Phase 2 trial tests giving chemotherapy before surgery, then continuing two medicines afterward (olaparib and pembrolizumab). It’s designed for people with newly diagnosed Stage III/IV ovarian, fallopian tube, or primary peritoneal cancer who may benefit from tighter control of the disease.
Birmingham, AlabamaAges 18 years+ - NCT05059444Recruiting
Blood test to catch cancer early after treatment
This study looks for signs of cancer left in the body after treatment using a simple blood test (called a liquid biopsy). It aims to see if the test can catch cancer that might come back earlier than regular scans.
Birmingham, AlabamaAges 18 years+ - NCT04606030Recruiting
Tested lymph surgery for breast-cancer–related arm swelling
This trial studies a specialized lymph surgery (called VLNT, moving lymph tissue) to treat swelling in an arm caused by breast cancer treatment. It may help reduce lymphedema that doesn’t fully improve with compression and elevation.
Chicago, IllinoisAges 18–75
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Common questions
- Are there clinical trials for breast cancer stage i?
- Yes. Clin2 currently lists 1,170 recruiting breast cancer stage i 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 stage i 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 stage i 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))
- Anatomic Stage IV Breast Cancer AJCC v8
- Anatomic Stage III Breast Cancer AJCC v8
- Anatomic Stage II Breast Cancer AJCC v8
- Anatomic Stage I Breast Cancer AJCC v8
- Early-stage Breast Cancer
- Breast Cancer Stage III
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.