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
- NCT06087120Recruiting
Can a blood test predict breast cancer treatment response?
This study looks at whether a blood test (ctDNA) can help predict how well breast cancer responds to chemotherapy before surgery. It focuses on people with HER2-positive or triple-negative breast cancer that has not spread far.
JakartaAges 18 years+ - NCT06297265Recruiting
Gentle breast massage after lumpectomy for breast cancer
This trial studies whether a special gentle massage technique (manual lymphatic drainage) can help women who have had breast-conserving surgery and will receive whole breast radiation. The goal is to see if it reduces side effects and improves recovery.
Los Angeles, CaliforniaAges 18 years+ - NCT06300125Recruiting
Freezing small low-risk breast tumors without surgery
This trial tests cryoablation (freezing the tumor with a needle) as a way to treat small, low-risk breast cancers without surgery. It is for women 50 or older whose cancers are hormone-receptor-positive and haven't spread to lymph nodes.
MilanAges 50 years+ - NCT05760612RecruitingPhase 3
After breast cancer surgery, test neratinib plus trastuzumab
This trial studies whether adding neratinib to standard trastuzumab treatment after neoadjuvant (before-surgery) therapy lowers the risk of breast cancer coming back. It is for people whose breast cancer is hormone-receptor positive and HER2 positive, with residual cancer found after neoadjuvant treatment.
GuangzhouAges 18–70 - NCT05866432RecruitingPhase 2
Dato-DXd for triple-negative breast cancer brain metastases
This trial studies Dato-DXd (an antibody-drug medicine) in people with triple-negative breast cancer that has spread to the brain. It aims to see how well it controls brain tumors when they are newly found or growing after other treatments.
Vienna, State of ViennaAges 18–100 - NCT06275126Recruiting
Choosing the Best Surgery for Young Women with Breast Cancer
This study looks at how to make the best surgical choices for young women with breast cancer. It compares different surgery options to help guide treatment decisions.
New Haven, ConnecticutAges 18–44 - NCT06291064RecruitingPhase 2
Chemotherapy study for Nigerian women with triple-negative breast cancer
This trial studies a standard chemotherapy treatment for Nigerian women with triple-negative breast cancer that has not spread widely. It aims to see how well the treatment works and how safe it is.
Ikeja, LagosAges 18–70 - NCT06260033RecruitingPhase 2
Radiation Therapy for Oligoprogressive ER+ Breast Cancer
This trial tests whether a precise radiation treatment (SBRT) can target a few growing spots of estrogen receptor-positive breast cancer that has spread to other parts of the body. It also uses a special PET scan (FES PET/CT) to see how well the cancer responds. The goal is to slow down the cancer and delay the need for stronger treatments.
Duarte, CaliforniaAges 18 years+ - NCT06273800Recruiting
Chemo timing and the menstrual cycle in breast cancer
This study tests whether the timing of chemotherapy during your menstrual cycle affects how well it works in triple-negative breast cancer. Women with regular periods who are about to start chemo before surgery may be eligible.
Amsterdam, North HollandAges 18–59 - NCT06268665RecruitingPhase 2
Tart Cherry Juice for Preventing Nerve Damage from Chemotherapy
This study tests whether tart cherry juice can help prevent nerve damage (peripheral neuropathy) caused by the chemotherapy drug paclitaxel. Participants drink tart cherry juice daily during their 12 weeks of paclitaxel treatment.
Sacramento, CaliforniaAges 18 years+ - NCT06263543RecruitingPhase 2
Sequencing antibody-drug conjugates in ER+, HER2-low breast cancer
This trial tests different sequences of antibody-drug conjugates (a type of targeted chemotherapy) for people with ER-positive, HER2-low or ultra-low metastatic breast cancer that has stopped responding to hormone therapy and has progressed on Enhertu. You must have had 1–4 prior chemotherapies for metastatic disease.
Miami, FloridaAges 18 years+ - NCT06247449Recruiting
MRI screening for brain metastases in aggressive breast cancer
This trial uses an MRI scan to look for early signs of breast cancer spreading to the brain in people with certain aggressive breast cancer types (triple-negative or HER2-positive) that are stage IIb or III. The goal is to find and treat brain metastases earlier, before they cause symptoms.
Toronto, OntarioAges 18 years+ - NCT06246968RecruitingPhase 1
Pembrolizumab plus tumor ablation for advanced triple-negative breast cancer
This study tests combining an immunotherapy drug (pembrolizumab, also called Keytruda) with a procedure that freezes or destroys cancer cells directly (called ablation). The goal is to see if this combination can help control triple-negative breast cancer that has spread or is inoperable.
Basking Ridge, New JerseyAges 18 years+ - NCT06251544RecruitingPhase 1
CAR T cells for HER2-positive metastatic breast cancer
This trial tests a new type of immune cell therapy (CAR T cells) that targets two markers on cancer cells: TRAIL-R2 and HER2. It is for people with advanced or recurrent HER2-positive breast cancer that has not been stopped by standard treatment.
Houston, TexasAges 18–80 - NCT06178159RecruitingPhase 2
New drug combo before surgery for HER2-positive breast cancer
This trial tests a new combination of drugs (DV plus pertuzumab, with or without toripalimab) given before surgery for HER2-positive breast cancer. The goal is to see if this treatment can shrink the tumor and improve outcomes.
Shanghai, Shanghai MunicipalityAges 18 years+ - 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 - NCT06220214RecruitingEarly Phase 1
Study of chemo before breast cancer surgery with special mammogram
This trial tests whether a special mammogram with contrast can help doctors see how well chemotherapy is working before breast cancer surgery. It is for women who plan to have at least 4 rounds of chemo before their operation.
Stony Brook, New YorkAges 18 years+ - NCT06224673RecruitingPhase 2
Testing ARX788 for HER2-low advanced breast cancer
This trial tests a new drug, ARX788, for people with HER2-low breast cancer that has spread or cannot be removed by surgery. The goal is to see if ARX788 helps shrink or control the cancer.
San Francisco, CaliforniaAges 18 years+ - NCT06227728Recruiting
Predicting immunotherapy response in advanced cancer
This study uses blood and tumor samples to find markers that predict whether immunotherapy will work for people with stage IV cancer. The goal is to better match treatments to patients.
Ho Chi Minh City, Hồ Chí MinhAges 18–80 - NCT05296564RecruitingPhase 1/Phase 2
TCR cell therapy for NY-ESO-1 positive metastatic cancers
This study tests a customized immune-cell treatment made from your own T cells to attack cancers that have NY-ESO-1. It may help shrink tumors in people with metastatic or hard-to-treat cancer when other treatments have not worked.
JerusalemAges 18–70 - NCT05984888Recruiting
MIND diet study for women with breast cancer
This study is testing whether a special diet called the MIND diet can help women with hormone receptor-positive breast cancer who are getting treatment. The diet focuses on foods that are good for the brain, like leafy greens and berries.
Columbus, OhioAges 45–75 - 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+ - NCT06173349RecruitingPhase 1
New bladder therapy for BCG-resistant bladder cancer
This trial tests a new treatment for bladder cancer that does not respond to standard BCG therapy. The treatment uses tiny particles (micelles) that deliver a chemotherapy drug directly into the bladder, aiming to destroy cancer cells without needing surgery.
Sacramento, CaliforniaAges 18 years+ - NCT03418961RecruitingPhase 3
Study of heart-risk management for metastatic HER2 breast cancer
This trial follows people with metastatic HER2-positive breast cancer who are at higher risk for heart damage while on HER2-targeted therapy. Some participants are randomly assigned to different monitoring/heart-protection approaches to see what best helps keep the heart safe.
Anchorage, AlaskaAges 18 years+
Hear when a new Breast Cancer Stage I 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 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.