Promising combo trial for aggressive breast cancer halted early

NCT ID NCT04108858

First seen Nov 01, 2025 · Last updated May 10, 2026 · Updated 24 times

Summary

This study looked at adding a drug called copanlisib to standard targeted therapy (trastuzumab and pertuzumab) for people with advanced HER2-positive breast cancer that has a specific genetic change (PIK3CA or PTEN mutation). The goal was to see if the combination could shrink tumors or keep them stable longer. Only 2 people enrolled before the trial was stopped, so we don't have clear results on how well it works.

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Contacts and locations

Locations

  • Los Angeles County-USC Medical Center

    Los Angeles, California, 90033, United States

  • M D Anderson Cancer Center

    Houston, Texas, 77030, United States

  • UCHealth University of Colorado Hospital

    Aurora, Colorado, 80045, United States

  • USC / Norris Comprehensive Cancer Center

    Los Angeles, California, 90033, United States

  • University of Oklahoma Health Sciences Center

    Oklahoma City, Oklahoma, 73104, United States

Conditions

Explore the condition pages connected to this study.