Condition
Breast Cancer Stage I clinical trials and research
As of November 12, 2026, Find a Trial lists 16 Breast Cancer Stage I clinical trials that are recruiting, at sites in 6 countries (most in United States (9), China (2), Canada (2)). By phase: Phase 2 (5), Phase 1/2 (1), Phase 1 (1), Phase 2/3 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 16Clinical trials
- 6Countries
Newest Breast Cancer Stage I clinical trials
All recruiting trials (16)
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Capecitabine for MRD-positive, resected ER+/HER2-negative breast cancer
This Phase 2 trial tests whether taking capecitabine can help people with resected, ER-positive/HER2-negative breast cancer who still have molecular residual disease after standard therapy.
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Adding TheraBionic P1 radiofrequency therapy to treatment for early-stage HR+ HER2- breast cancer
This study will try giving TheraBionic P1 amplitude-modulated radiofrequency therapy before surgery to see if it improves tumor response in women with early-stage, hormone receptor–positive, HER2-negative breast cancer.
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Combining FWD1802 with CDK4/6 inhibitors or everolimus for ER+/HER2- advanced breast cancer
This trial tests whether adding FWD1802 to CDK4/6 inhibitors or everolimus helps people with ER-positive/HER2-negative unresectable locally advanced or metastatic breast cancer who have progressed on or cannot use standard therapy.
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Using PTFE mesh for breast reconstruction in cancer patients
This study tests if using a special mesh called PTFE can help women with early-stage breast cancer have better and safer breast reconstruction compared to a traditional method.
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Predicting how hormone therapy before surgery affects breast cancer
This study is testing how hormone therapy before surgery can help people with early-stage breast cancer and what it means for their tumors.
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Meal timing during cancer treatment for Alaska Native and American Indian patients
This test will see if an 8-hour time-restricted eating schedule during neoadjuvant or adjuvant therapy helps Alaska Native and American Indian adults with rectal or certain breast cancers.
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Decision-making tool to help women with early breast cancer choose treatment
This project will test a patient decision aid to help women with early-stage breast cancer make treatment choices.
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Memantine plus structured exercise to protect thinking and memory during breast cancer chemotherapy
This will test whether memantine combined with a supervised exercise program, memantine alone, or a placebo can prevent or reduce thinking and memory problems in people receiving chemotherapy for stage I–III breast cancer.
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Optimizing treatment for low stage triple-negative breast cancer patients
This study is testing if patients with early-stage triple-negative breast cancer can skip chemotherapy after surgery and radiation if they have certain positive signs, to see how it affects their safety and quality of life.
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Improving surgical decisions for young women with breast cancer
This study is testing a new online tool to help young women with breast cancer make better surgical decisions and communicate more effectively with their doctors.
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Using tart cherry juice to prevent nerve damage from chemotherapy in breast cancer patients
This study is testing if drinking tart cherry juice can help prevent nerve damage in breast cancer patients receiving chemotherapy.
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Evaluating skin reactions in breast cancer patients receiving proton therapy
This study is testing a new technique to see if it can help reduce skin reactions in breast cancer patients getting proton therapy.
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Virtual rehabilitation program for cancer survivors
This study is testing an 8-week online rehab program for cancer survivors to see if it helps them feel better physically and socially after treatment.
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Combining Pyrotinib and Capecitabine for Early HER2 Positive Breast Cancer
This study is testing if combining two medications, pyrotinib and capecitabine, can help women with early-stage HER2-positive breast cancer feel better and improve their treatment outcomes.
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Combining chemotherapy and radiation for high-risk breast cancer patients
This study tests whether combining chemotherapy and radiation can help high-risk breast cancer patients who still have cancer after initial treatment, while also looking at how this treatment affects their immune system.
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Using Harmonic Motion Imaging for Non-Invasive Breast Tumor Treatment
This study is testing if a new imaging method can help guide a non-invasive ultrasound treatment for people with benign breast tumors and early-stage breast cancer to see if it leads to better recovery and results.
Related topics
Quick answers
How many Breast Cancer Stage I clinical trials are recruiting right now?
16, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 6 countries. The most sites are in United States (9 trials), China (2 trials), Canada (2 trials), Italy (1 trial), Netherlands (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 2: 5, Phase 1/2: 1, Phase 1: 1, Phase 2/3: 1. Trials with no phase listed are usually device, behavioural or observational studies.
How do I join one?
Open a study, check the "Is this trial a fit for you?" section, then contact the study team listed on the page. They will ask a few screening questions. Asking is free and does not commit you to anything. Talk it over with your doctor first.
Find the studies that fit you
A list is a starting point. Tell us your situation in your own words and we'll rank the studies that match and explain why. It's free and needs no account.