Triple attack on tough breast cancer: combining targeted therapies may improve outcomes

NCT ID NCT05969184

First seen Jul 15, 2026 · Last updated Jul 16, 2026 · Updated 1 time

Summary

This trial is for women with advanced breast cancer that has both hormone receptors (HR-positive) and the HER2 protein (HER2-positive). It tests whether adding a CDK4/6 inhibitor called palbociclib to standard endocrine therapy and anti-HER2 antibodies (trastuzumab and pertuzumab) can help keep the cancer from growing longer. Participants have not received prior systemic treatment for advanced disease. The study measures how long people live without their cancer worsening.

What this could mean

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

Active substance
a combination of palbociclib (a CDK4/6 inhibitor), trastuzumab and pertuzumab (anti-HER2 antibodies), and an endocrine therapy (letrozole or exemestane)
What this could lead to
If successful, this combination could offer a new first-line treatment option for people with HR-positive, HER2-positive advanced breast cancer, potentially delaying disease progression.
What could go wrong
This is a Phase 2 trial with a relatively small number of participants, so results may not be definitive. Combining multiple drugs also raises the risk of side effects.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

As listed by the trial registrant

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

Contacts and locations

Locations

  • Beijing Cancer Hospital

    Beijing, Beijing Municipality, 100142, China

  • Yaxin Liu

    Beijing, None Selected, 100042, China

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