Radiation and immunotherapy combo shows promise in shrinking breast tumors before surgery

NCT ID NCT04454528

First seen Nov 01, 2025 · Last updated May 16, 2026 · Updated 27 times

Summary

This study tests whether adding a single dose of radiation to the immunotherapy drug pembrolizumab before surgery can shrink tumors in people with early-stage breast cancer. About 27 participants will receive the combination, and doctors will measure tumor shrinkage and immune cell activity. The goal is to see if this approach is safe and effective enough to delay or reduce the need for more extensive surgery.

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Contacts and locations

Locations

  • Perelman Center for Advanced Medicine

    Philadelphia, Pennsylvania, 19104, United States

Conditions

Explore the condition pages connected to this study.