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Breast Tumor clinical trials and research
As of November 12, 2026, Find a Trial lists 5 Breast Tumor clinical trials that are recruiting, at sites in 10 countries (most in United States (4), Austria (1), Australia (1)). By phase: Phase 1 (1), Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 5Clinical trials
- 10Countries
Newest Breast Tumor clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| HTR2 CAR T Cells Targeting HER2 in Metastatic Breast Cancer | Phase 1 | Houston, Texas | Recruiting | Feb 9, 2024 |
| New ultrasound method for diagnosing breast tumors | — | Rochester, Minnesota | Recruiting | Jan 5, 2021 |
| Evaluating the impact of MR-guided radiation therapy on cancer treatment outcomes | — | Pittsburgh, Pennsylvania and 17 other locations | Recruiting | Aug 30, 2019 |
| Registry for metastatic breast cancer in Austria | — | Salzburg, State of Salzburg and 15 other locations | Recruiting | Mar 12, 2019 |
| Proton therapy for early stage breast cancer treatment | Phase 2 | Scottsdale, Arizona and 8 other locations | Recruiting | Jan 11, 2013 |
All recruiting trials (5)
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HTR2 CAR T Cells Targeting HER2 in Metastatic Breast Cancer
A one-time treatment with specially modified T cells that target HER2-positive metastatic breast cancer is tested to see if it’s safe and how long the cells last, with a plan for possible dose increases.
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New ultrasound method for diagnosing breast tumors
This study tests a new 3D ultrasound method to see if it can better diagnose breast tumors in women compared to traditional imaging techniques.
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Evaluating the impact of MR-guided radiation therapy on cancer treatment outcomes
This study is testing how using a special type of radiation therapy with real-time imaging can improve treatment results and quality of life for adults with cancer.
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Registry for metastatic breast cancer in Austria
This study is collecting information from people with metastatic breast cancer in Austria to better understand the disease and how different treatments are working.
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Proton therapy for early stage breast cancer treatment
This study is testing whether proton therapy can be a better treatment for women with early stage breast cancer by focusing on the tumor while reducing side effects compared to traditional radiation.
Related topics
Quick answers
How many Breast Tumor clinical trials are recruiting right now?
5, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 10 countries. The most sites are in United States (4 trials), Austria (1 trial), Australia (1 trial), Belgium (1 trial), Canada (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 1: 1, Phase 2: 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.