New drug combo shrinks tumors in hard-to-treat GI cancers

NCT ID NCT03929666

First seen Nov 01, 2025 · Last updated May 09, 2026 · Updated 28 times

Summary

This study tested a new drug called ZW25 (zanidatamab) combined with standard chemotherapy in 74 people with advanced HER2-positive stomach, bile duct, or colorectal cancers. The goal was to see if the combination is safe and can shrink tumors. Results showed some patients had their tumors shrink, but the treatment is not a cure and ongoing management is needed.

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Contacts and locations

Locations

  • Asan Medical Center

    Seoul, 05505, South Korea

  • CECIM Biocinetic

    Santiago, 8320000, Chile

  • Centro Internacional de Estudios Clínicos

    Santiago, 8420383, Chile

  • Centro de Investigacion Clinica SAGA

    Santiago, 7500653, Chile

  • Fox Chase Cancer Center

    Philadelphia, Pennsylvania, 19111, United States

  • H. Lee Moffitt Cancer Center

    Tampa, Florida, 33612, United States

  • Hoag Memorial Hospital Presbyterian

    Newport Beach, California, 92663, United States

  • Icegclinic Research & Care

    Santiago, 8241479, Chile

  • Korea University Anam Hospital

    Seoul, 02841, South Korea

  • MD Anderson Cancer Center

    Houston, Texas, 77030, United States

  • Memorial Sloan Kettering Cancer Center

    New York, New York, 10065, United States

  • Nebraska Methodist Hospital

    Omaha, Nebraska, 68114, United States

  • Princess Margaret Cancer Center

    Toronto, Ontario, M5G 2C1, Canada

  • Pusan National University

    Busan, 49241, South Korea

  • Sarah Cannon Research Institute

    Nashville, Tennessee, 37203, United States

  • Seoul National University Bundang Hospital

    Seongnam-si, Gyeonggi-do, 13620, South Korea

  • Seoul National University Hospital

    Seoul, 03080, South Korea

  • Severance Hospital

    Seoul, 03722, South Korea

  • The Cancer and Hematology Centers

    Grand Rapids, Michigan, 49503, United States

  • The Ottawa Hospital Cancer Centre

    Ottawa, Ontario, K1H 8L6, Canada

  • USC/Norris Comprehensive Cancer Center

    Los Angeles, California, 90033, United States

  • University of Chicago

    Chicago, Illinois, 60637, United States

  • Virginia Mason Medical Center

    Seattle, Washington, 98101, United States

Conditions

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