Could some breast cancer patients skip extra treatment? new trial investigates

NCT ID NCT07407920

First seen Jun 24, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This phase II trial is testing whether patients with early HER2-positive or triple-negative breast cancer who had a complete response to pre-surgery treatment and have no cancer DNA in their blood can safely receive less therapy after surgery. The goal is to reduce side effects while keeping the cancer from coming back. The study involves 120 participants and uses drugs like pembrolizumab, trastuzumab, and pertuzumab.

What this could mean

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

Active substance

pembrolizumab, trastuzumab, pertuzumab, endocrine therapy

What this could lead to

If successful, this could show that some patients with early breast cancer can safely receive less treatment after surgery, reducing side effects while maintaining good outcomes.

What could go wrong

This is a small, early-phase trial (120 participants) and may not prove that reduced therapy is as effective as standard care. There is a risk that cancer could return without full treatment.

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.

breast cancer HER2 positive breast carcinoma triple-negative breast carcinoma

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: •••••@•••••

Locations

  • M D Anderson Cancer Center

    RECRUITING

    Houston, Texas, 77030, United States

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

    Contact