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Hypofractionated Radiotherapy Before or After Breast Surgery for Treatment of Patients With Non-Metastatic Breast Cancer
NCT06635980 · View on ClinicalTrials.gov ↗
Study Summary
This phase II trial studies how well hypofractionated radiotherapy before (preoperative) or after (postoperative) breast surgery works in treating patients with different types of non-metastatic (has not spread from original tumor site) breast cancer and to determine the outcomes and side effects of this treatment. Radiation therapy is considered an integral part of breast conserving therapy. Hypofractionated radiation therapy is a radiation treatment in which the total dose of radiation is divided into large doses and treatments are given less than once a day. This has been shown to be an effective treatment for breast cancer while reducing treatment time and decreasing side effects. Preoperative radiotherapy alone or concurrently with chemotherapy has also been tested with excellent results and with minimal toxicity. Preoperative radiation of the intact tumor with a hypofractionated regimen can potentially decrease toxicity by allowing the delivery of treatment to intact breast tissue. The potential advantages of preoperative radiation therapy include the delivery of radiation in the intact breast when radiation can be more effective as more oxygen can be available in the tissue. Furthermore, complications and cosmetic results are expected to be lower in pre-operative radiotherapy before surgery, as there have been no changes in blood supply to the breast. This lends to the possibility of using lower doses of radiotherapy to patients, and potentially better cancer associated clinical outcomes for our breast cancer patients. Undergoing hypofractionated radiation therapy before or after breast surgery may be safe and effective in treating patients with different types of non-metastatic breast cancer.
Conditions Studied
Interventions
- PROCEDURE Biospecimen Collection
- PROCEDURE Computed Tomography
- PROCEDURE Biopsy of Breast
- PROCEDURE Breast Surgery
- DRUG Chemotherapy
Study Locations (1)
Arizona
- Mayo Clinic in Arizona — Scottsdale
Trial Details
| Field | Value |
|---|---|
| Enrollment Target | 120 participants |
| Start Date | 2025-05-14 |
| Est. Completion | 2034-10-21 |
| Phase | Phase 2 |
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Full Details on ClinicalTrials.gov ↗What the Registry Record Tells You About NCT06635980
The ClinicalTrials.gov registry entry for NCT06635980 describes a study currently listed as recruiting. It is categorized as Phase 2, which is the standard way researchers label where a study sits along the investigational pathway from early safety work through later efficacy and post-marketing evaluation. The registered enrollment target is 120 participants, a figure that helps gauge the scale of data the investigators plan to collect. The listed sponsor is Mayo Clinic, which has 3,246 total studies on file at ClinicalTrials.gov, and sponsors are the parties responsible for study design, oversight, and regulatory filings.
The record links to 5 conditions, with Breast Carcinoma appearing as the primary indexed condition, and to 5 interventions — of which Biospecimen Collection is the first listed. Interventions can include drugs, devices, procedures, behavioral programs, or observational arms, and each is tracked as a separate registry field so that downstream queries can filter accurately. When a trial lists multiple interventions, it usually reflects a multi-arm design or a comparison protocol rather than a single treatment being tested in isolation. The brief summary published in the registry is the clearest source of protocol intent and should be read before drawing conclusions from any sidebar tags.
Geographic footprint matters for practical reasons: NCT06635980 reports 1 study location spanning 1 distinct geographic area — top geographies include Arizona. A larger site network tends to correlate with broader recruitment capacity, but it does not imply anything about study quality, and site-level enrollment status can diverge from the overall registry status shown above. Every data point on this page comes from the public ClinicalTrials.gov dataset and is reproduced here for reference only; it is not a medical recommendation, an endorsement of the sponsor, or an invitation to enroll. Verify current status, eligibility criteria, and contact details directly at ClinicalTrials.gov, and discuss any participation decision with your own healthcare provider.
Frequently Asked Questions
What is clinical trial NCT06635980 about?
NCT06635980 is a clinical study titled "Hypofractionated Radiotherapy Before or After Breast Surgery for Treatment of Patients With Non-Metastatic Breast Cancer". This phase II trial studies how well hypofractionated radiotherapy before (preoperative) or after (postoperative) breast surgery works in treating patients with different types of non-metastatic (has not spread from original tumor site) breast cancer and to determine the outcomes and side effects of...
What is the current status of trial NCT06635980?
This trial is currently recruiting. It is a Phase 2 study. The enrollment target is 120 participants. The study started on 2025-05-14. Estimated completion is 2034-10-21.
What conditions does trial NCT06635980 study?
This clinical trial studies the following conditions: Breast Carcinoma, Anatomic Stage III Breast Cancer AJCC v8, Anatomic Stage II Breast Cancer AJCC v8, Anatomic Stage I Breast Cancer AJCC v8, Triple-Negative Breast Carcinoma. These conditions were identified from the trial registry and reflect the primary focus areas of the research.
What interventions are being tested in trial NCT06635980?
The interventions under investigation include: Biospecimen Collection (PROCEDURE), Computed Tomography (PROCEDURE), Biopsy of Breast (PROCEDURE), Breast Surgery (PROCEDURE), Chemotherapy (DRUG). Each intervention is being evaluated for safety and efficacy as part of this clinical study.
Who is sponsoring clinical trial NCT06635980?
This trial is sponsored by Mayo Clinic, which has 3,246 total clinical trials registered on ClinicalTrials.gov. The sponsor is responsible for the study's design, funding, and regulatory compliance.
Where is trial NCT06635980 being conducted?
This trial has 1 study location across Arizona. Contact the study sites directly through ClinicalTrials.gov for enrollment availability.
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