Condition
Unresectable Breast Cancer clinical trials and research
As of November 12, 2026, Find a Trial lists 3 Unresectable Breast Cancer clinical trials that are recruiting, at sites in 11 countries (most in France (2), United States (1), Austria (1)). By phase: Phase 2 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 3Clinical trials
- 11Countries
Newest Unresectable Breast Cancer clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| Tucatinib plus trastuzumab for HER3-mutant, HER2-not amplified metastatic breast cancer | Phase 2 | Bordeaux and 8 other locations | Recruiting | Sep 25, 2025 |
| Biomarker-driven treatment selection for metastatic breast cancer | — | St Louis, Missouri | Recruiting | Aug 4, 2023 |
| Observational study on HER2-low breast cancer treatment with Trastuzumab Deruxtecan | — | Graz and 215 other locations | Recruiting | Jul 14, 2023 |
All recruiting trials (3)
-
Tucatinib plus trastuzumab for HER3-mutant, HER2-not amplified metastatic breast cancer
This trial will test whether combining tucatinib and trastuzumab helps people with metastatic or unresectable breast cancer whose tumors are HER2-negative but carry activating ERBB3 (HER3) mutations.
-
Biomarker-driven treatment selection for metastatic breast cancer
This study is testing if measuring a specific blood marker can help doctors decide when to change treatments for patients with certain types of advanced breast cancer to improve their chances of staying cancer-free longer.
-
Observational study on HER2-low breast cancer treatment with Trastuzumab Deruxtecan
This study is testing how well Trastuzumab deruxtecan works for adults with advanced HER2-low breast cancer who have already had chemotherapy.
Related topics
Quick answers
How many Unresectable Breast Cancer clinical trials are recruiting right now?
3, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 11 countries. The most sites are in France (2 trials), United States (1 trial), Austria (1 trial), Belgium (1 trial), Denmark (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
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.