New combo therapy shows promise for aggressive breast cancer

NCT ID NCT04681768

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at combining the drug abemaciclib with standard hormone therapy as a first treatment for women with metastatic breast cancer that has spread to organs or has a high tumor burden. The goal was to see how many patients' tumors shrank or disappeared. The study enrolled 95 women and tracked their response using standard imaging every 8 weeks.

What this could mean

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

Active substance
Abemaciclib (Verzenios) plus endocrine therapy (aromatase inhibitor or Fulvestrant)
What this could lead to
If successful, this combination could offer a more effective first-line treatment option for patients with aggressive metastatic breast cancer, potentially improving tumor shrinkage and delaying progression.
What could go wrong
This is a single-arm observational study with only 95 participants, so results may not apply broadly. Side effects from abemaciclib, though manageable, can include fatigue, diarrhea, and low blood counts.

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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

  • Klinikum rechts der Isar der TU München, Klinik und Poliklinik für Frauenheilkunde

    Munich, 81675, Germany

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