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
- NCT04469296Recruiting
Diet changes before surgery for hormone-receptor breast cancer
This trial tests whether changing your diet before your breast surgery can help people with early, hormone-receptor (ER/PR+) breast cancer. It focuses on patients who have not started treatment yet and want to keep surgery as the main treatment.
Montpellier, HeraultAges 18–80 - NCT07469709Recruiting
Cancer risk study using genetics and monitoring
This study looks at genetic and other factors in people with certain cancers to better understand personal cancer risks and improve monitoring. It may help find ways to detect changes earlier.
Candiolo, TurinAges 18 years+ - NCT07281001Recruiting
Trastuzumab deruxtecan study for breast cancer patients
This study looks at how well the drug trastuzumab deruxtecan works in women with breast cancer that has spread. It is for patients who have already taken this drug.
MoscowAges 18–80 - NCT06405269Enrolling by invitation
How breast cancer treatment affects cholesterol in young women
This study looks at how chemotherapy, hormone therapy, or targeted therapy affects cholesterol levels in younger women with early-stage breast cancer that can be removed with surgery. It may help doctors understand how to better manage heart health during cancer treatment.
Beijing, Beijing MunicipalityAges 18–40 - NCT00437879Recruiting
Ultrasound and MRI scans to track breast cancer response early
This study uses ultrasound and/or MRI scans to see how breast cancer responds early while you start “neoadjuvant” treatment (chemotherapy, with or without radiation before surgery). It may help doctors spot response sooner and better understand which imaging changes match treatment benefit.
Toronto, OntarioAges Any age - NCT05891093RecruitingPhase 3
Fluzoparib plus hormone therapy after surgery for breast cancer
This Phase 3 trial tests whether fluzoparib added to standard hormone (endocrine) therapy after early breast cancer surgery can improve outcomes and safety. It may help patients whose tumors are ER-positive, HER2-negative, and a specific SNF3 subtype.
Beijing, Beijing MunicipalityAges 18–70 - NCT06330012Recruiting
Understanding resistance to T-Dxd in HER2+ breast cancer
This study looks at why some HER2-positive breast cancer patients stop responding to the drug T-Dxd (trastuzumab deruxtecan). It aims to find out how resistance develops, which may help improve future treatments.
SeoulAges Any age - NCT07829848Recruiting
Skip extra radiation for breast cancer patients who respond well to treatment
This trial tests whether women and men with advanced, non-metastatic breast cancer can safely skip an extra radiation boost to the lymph nodes if their tumors respond well to pre-surgery chemotherapy or targeted therapy. The goal is to reduce side effects while keeping cancer control.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT05635487RecruitingPhase 2
Neoadjuvant treatment for HER2-positive breast cancer with SHR-A1811
This trial tests whether SHR-A1811 alone, or together with pyrotinib, given before surgery, can shrink HER2-positive breast cancer. It may help you respond better to treatment while making surgery easier.
Shenyang, LiaoningAges 18–75 - NCT06299202Recruiting
Predicting breast cancer treatment response with special mammogram
This study uses a special type of mammogram with contrast dye to see if it can predict how well breast cancer responds to chemotherapy before surgery. It's for people with HER2-positive or triple-negative breast cancer.
LyonAges 35 years+ - NCT07551050Recruiting
Sacituzumab Govitecan for Advanced HER2-Negative Breast Cancer
This trial studies how well sacituzumab govitecan (a targeted cancer drug) works for metastatic breast cancer that is HER2-negative. The study focuses on real-world patient experiences and quality of life in Chinese patients.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT06757621RecruitingPhase 3
Shorter Radiation for Intermediate-Risk Breast Cancer
This trial is testing a shorter course of radiation (called hypofractionated radiation) to the lymph nodes around the breast area after surgery for women with intermediate-risk breast cancer. The goal is to see if this approach works as well as standard radiation while possibly reducing side effects.
Beijing, Beijing MunicipalityAges 45 years+ - NCT07500012Recruiting
Ear nerve stimulation for breast cancer pain
This study tests whether gentle electrical stimulation of a nerve in your ear (called taVNS) can help reduce pain and improve symptoms for breast cancer survivors. You would need to have finished your main treatments, have ongoing pain, and be willing to provide stool samples and undergo brain scans.
Tallahassee, FloridaAges 18–79 - NCT07461454RecruitingPhase 3
Comparing YL202 to other treatments for HR+/HER2- breast cancer
This trial tests a new drug called YL202 against other treatments chosen by your doctor for people with a certain type of advanced breast cancer (HR+/HER2-). It aims to see if YL202 works better. You may join if your cancer has spread, you've already tried chemotherapy, and you meet other health criteria.
Shanghai, Shanghai MunicipalityAges 18–75 - NCT07401381RecruitingPhase 1
Injectable vs. oral letrozole in early breast cancer
This study compares a new injectable form of the drug letrozole with the standard oral pill. It aims to find out if the injection works as well as the pill for women who have already taken letrozole for their early breast cancer and have finished their initial treatment.
Beverly Hills, CaliforniaAges 18–80 - NCT07396324RecruitingPhase 2
A new drug before surgery for HR+ HER2- breast cancer
This trial tests whether the drug QL1706, given before surgery, can help treat hormone receptor positive and HER2-negative breast cancer. It is for people who have not yet had cancer spread to other parts of the body.
ShanghaiAges 18 years+ - NCT07340398RecruitingPhase 2
Testing new drug combos for HER2-positive breast cancer not responding to first therapy
This trial tests a new combination of drugs for people with HER2-positive early breast cancer whose tumors did not respond well to the first round of standard targeted therapy plus chemo. The goal is to see if switching to trastuzumab-rezetecan plus pertuzumab or a different chemo combo (nab-paclitaxel, carboplatin, trastuzumab, and pyrotinib) can shrink the tumor before surgery.
HangzhouAges 18–75 - NCT07237256RecruitingPhase 3
Testing less chemo for HR+ HER2- breast cancer with ribociclib
This trial tests whether some people with hormone receptor-positive, HER2-negative early breast cancer can safely receive less chemotherapy when also taking the targeted drug ribociclib after surgery. You may qualify if you have a specific stage of breast cancer and are planning to take hormone therapy for at least 5 years.
AmiensAges 18 years+ - NCT07087691Recruiting
Testing a device to mark breast cancer for surgery and monitoring
This trial tests a device called OneMark that helps doctors find and track breast cancer during surgery and follow-up. It may help make sure the cancer is removed completely.
La Jolla, CaliforniaAges 18 years+ - NCT07032545Recruiting
Broccoli microgreens study for obese breast cancer survivors
This trial tests if eating broccoli microgreens can improve metabolism in obese breast cancer survivors. Participants will avoid other cruciferous vegetables during the study to see how the microgreens affect their health.
Baltimore, MarylandAges Any age - NCT05862064RecruitingPhase 3
Adding an immune drug and anti-blood-vessel treatment to chemo
This study tests whether adding an immune therapy (a PD-1 antibody) plus a blood-vessel–blocking treatment to standard chemo improves outcomes for people with surgically treated triple-negative breast cancer. Everyone gets chemotherapy, but some will also get the added drugs to try to reduce cancer coming back.
Shanghai, Shanghai MunicipalityAges 18–70 - NCT06609187RecruitingPhase 1
Study of GNC-077 for advanced breast cancer and other solid tumors
This trial tests a new drug called GNC-077 for people with advanced breast cancer or other solid tumors that have spread. It aims to see if the drug is safe and effective.
Beijing, Beijing MunicipalityAges 18 years+ - NCT06503783RecruitingPhase 1
Study of BL-M17D1 for advanced breast cancer and solid tumors
This trial tests a new drug, BL-M17D1, for people with advanced breast cancer (HER2 positive or negative) or other solid tumors that have spread. It aims to see if the drug is safe and effective.
Harbin, HeilongjiangAges 18–75 - NCT06493864RecruitingPhase 1
BL-B16D1 for advanced breast cancer and solid tumors
This trial tests a new drug called BL-B16D1 for people with advanced breast cancer or other solid tumors that have not responded to standard treatments. The goal is to see if the drug is safe and how well it works.
Shanghai, Shanghai MunicipalityAges 18–75
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.