Blood test could guide care for Long-Term breast cancer responders

NCT ID NCT06663787

First seen Jan 09, 2026 · Last updated May 16, 2026 · Updated 19 times

Summary

This study looks at 50 patients with HER2-positive metastatic breast cancer who have had a good response to anti-HER2 therapy for at least two years. Researchers will use a blood test called Signatera to check for tiny bits of cancer DNA. The goal is to learn if this test can help doctors decide whether to continue or stop maintenance treatment in the future.

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Contacts and locations

Locations

  • Aichi Cancer Center

    Nagoya, Aichi-ken, 4678601, Japan

  • Nagoya City University

    Nagoya, Aichi-ken, 4678601, Japan

  • Natera

    San Carlos, Texas, 94070, United States

  • The Cancer Institute Hospital of Japanese Foundation for Cancer Research

    Tokyo, Tokyo, 135-8550, Japan

Conditions

Explore the condition pages connected to this study.