Condition
Stage III Breast Cancer clinical trials and research
As of November 12, 2026, Find a Trial lists 9 Stage III Breast Cancer clinical trials that are recruiting, at sites in 17 countries (most in United States (5), Belgium (1), Cyprus (1)). By phase: Phase 3 (2), Phase 2 (2), Phase 4 (1). Every study is explained in plain English. Data from ClinicalTrials.gov and NIH RePORTER, updated November 12, 2026.
- 9Clinical trials
- 17Countries
Newest Stage III Breast Cancer clinical trials
| Study | Phase | Where | Status | Registered |
|---|---|---|---|---|
| 18F‑FES PET/CT to detect distant metastasis in low‑grade ER‑positive stage III breast cancer | Phase 2 | Seoul | Recruiting | Jan 2, 2026 |
| Disappearing markers for daily breast radiation delivery | — | Detroit, Michigan | Recruiting | Jul 31, 2025 |
| Revaree Plus for vaginal dryness in people with breast cancer | Phase 4 | Basking Ridge, New Jersey and 6 other locations | Recruiting | Jun 29, 2025 |
| Comparing concurrent and sequential chemotherapy with radiation for breast cancer | Phase 3 | Vishkhapatnam, Andhra Pradesh and 4 other locations | Recruiting | Apr 13, 2025 |
| Investigating ctDNA in Breast Cancer Treatment | — | Jakarta and 2 other locations | Recruiting | Oct 17, 2023 |
| Telehealth exercise program for older women with breast cancer | — | Boston, Massachusetts and 3 other locations | Recruiting | Sep 10, 2022 |
| Using elacestrant to treat ER+/HER2- breast cancer patients with ctDNA relapse | Phase 3 | Anderlecht and 112 other locations | Recruiting | Aug 23, 2022 |
| Exploring how exercise affects cancer recurrence | — | Durate, California and 8 other locations | Recruiting | Oct 19, 2020 |
| Treatment for early-stage HER2 low, hormone receptor positive breast cancer | Phase 2 | Fullerton, California and 8 other locations | Recruiting | Sep 17, 2020 |
All recruiting trials (9)
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18F‑FES PET/CT to detect distant metastasis in low‑grade ER‑positive stage III breast cancer
This test will see if 18F‑FES PET/CT can better find distant spread in people with low‑grade, estrogen receptor–positive stage III breast cancer.
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Disappearing markers for daily breast radiation delivery
This trial will test whether Magic Ink tattoos are as safe and remain visible as standard tattoo ink for women getting radiation after breast cancer surgery.
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Revaree Plus for vaginal dryness in people with breast cancer
This trial will test whether Revaree Plus can improve vaginal dryness and related discomfort in adults with hormone-receptor–positive stage 0–III breast cancer who are on tamoxifen, aromatase inhibitors, or SERMs.
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Comparing concurrent and sequential chemotherapy with radiation for breast cancer
This study is testing whether getting chemotherapy and radiation at the same time works better than getting them one after the other for people with stage IIB-III breast cancer.
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Investigating ctDNA in Breast Cancer Treatment
This study is testing if blood samples can help predict how well neoadjuvant chemotherapy works for women with stage II-III HER2-positive and triple-negative breast cancer.
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Telehealth exercise program for older women with breast cancer
This study is testing if a telehealth exercise program with protein support can help older women with breast cancer feel better during and after chemotherapy compared to a regular health education program.
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Using elacestrant to treat ER+/HER2- breast cancer patients with ctDNA relapse
This study is testing if a new drug called elacestrant can help women with ER-positive, HER2-negative breast cancer who have had a relapse, compared to their usual treatment.
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Exploring how exercise affects cancer recurrence
This study is testing how different levels of aerobic exercise can help reduce the chances of cancer coming back in people who have been treated for breast, prostate, or colorectal cancer.
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Treatment for early-stage HER2 low, hormone receptor positive breast cancer
This study is testing whether a new treatment combining trastuzumab deruxtecan and anastrozole can help people with early-stage HER2 low, hormone receptor positive breast cancer do better than just using trastuzumab deruxtecan alone.
Related topics
Quick answers
How many Stage III Breast Cancer clinical trials are recruiting right now?
9, as of November 12, 2026. We update this list each time we refresh our data from ClinicalTrials.gov.
Where are these trials running?
In 17 countries. The most sites are in United States (5 trials), Belgium (1 trial), Cyprus (1 trial), France (1 trial), Germany (1 trial). Each study page lists its sites and which ones are recruiting.
What phases are they in?
Phase 3: 2, Phase 2: 2, Phase 4: 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.