New combo therapy targets breast cancer brain metastases

NCT ID NCT07454668

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This early-phase trial tests whether combining the targeted drug trastuzumab deruxtecan (T-DXd) with precise radiation (SRS) is safe for people with HER2-positive breast cancer that has spread to the brain. Up to 20 participants will receive the drug by IV every three weeks along with a single session of focused radiation. The main goal is to find the best dose and check for severe side effects.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance

Trastuzumab deruxtecan (T-DXd) and stereotactic radiosurgery (SRS)

What this could lead to

If this combination proves safe, it could lead to a new way to control brain metastases in HER2-positive breast cancer, potentially improving outcomes for patients.

What could go wrong

This is a very early Phase 1 trial with only 20 people, focused on safety and dosing. It may not show enough benefit to move forward, and side effects from the drug or radiation could be serious.

Disclaimer Read more

This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Conditions

The condition(s) this trial relates to.

brain cancer breast cancer breast neoplasm cancer HER2 positive breast carcinoma metastatic malignant neoplasm metastatic malignant neoplasm in the brain neoplasm Neoplasm Metastasis

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Contacts and locations

Study contacts

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

  • Contact

    Phone: •••-•••-•••• Email: •••••@•••••

Locations

  • Miami Cancer Institute at Baptist Health, Inc.

    Miami, Florida, 33176, United States

    Contact Phone: •••-•••-•••• Email: •••••@•••••

    Contact Phone: •••-•••-•••• Email: •••••@•••••