New combo therapy shows promise for HER2-low breast cancer patients

NCT ID NCT04556773

First seen Jan 05, 2026 · Last updated May 15, 2026 · Updated 26 times

Summary

This study tests a drug called trastuzumab deruxtecan (T-DXd) combined with other cancer medicines in people whose breast cancer has spread and has low levels of a protein called HER2. The main goals are to see if the combinations are safe and to find the best doses. About 138 adults with this type of breast cancer will take part. The study is not yet complete, but it may lead to better treatment options for patients who currently have limited choices.

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Contacts and locations

Locations

  • Research Site

    Commack, New York, 11725, United States

  • Research Site

    Harrison, New York, 10604, United States

  • Research Site

    New York, New York, 10029, United States

  • Research Site

    New York, New York, 10065, United States

  • Research Site

    Uniondale, New York, 11553, United States

  • Research Site

    Chapel Hill, North Carolina, 27514, United States

  • Research Site

    Chattanooga, Tennessee, 37404, United States

  • Research Site

    Germantown, Tennessee, 38138, United States

  • Research Site

    Fort Worth, Texas, 76104, United States

  • Research Site

    East Melbourne, 3002, Australia

  • Research Site

    Westmead, 2145, Australia

  • Research Site

    Edegem, 2650, Belgium

  • Research Site

    Leuven, 3000, Belgium

  • Research Site

    Ottignies, 1340, Belgium

  • Research Site

    Goiânia, 74605-070, Brazil

  • Research Site

    Porto Alegre, 90035-003, Brazil

  • Research Site

    Porto Alegre, 90110-270, Brazil

  • Research Site

    São Paulo, 03102-002, Brazil

  • Research Site

    São Paulo, 04543-000, Brazil

  • Research Site

    Kelowna, British Columbia, V1Y 5L3, Canada

  • Research Site

    Québec, Quebec, G1J 1Z4, Canada

  • Research Site

    Villejuif, 94805, France

  • Research Site

    Monterrey, 64710, Mexico

  • Research Site

    Moscow, 115478, Russia

  • Research Site

    Moscow, 143442, Russia

  • Research Site

    Saint Petersburg, 199226, Russia

  • Research Site

    Seoul, 03080, South Korea

  • Research Site

    Seoul, 03722, South Korea

  • Research Site

    Seoul, 05505, South Korea

  • Research Site

    Seoul, 06351, South Korea

  • Research Site

    Kaohsiung City, 82445, Taiwan

  • Research Site

    Taichung, 40443, Taiwan

  • Research Site

    Taipei, 100, Taiwan

  • Research Site

    Taipei, 11217, Taiwan

  • Research Site

    Taipei, 114, Taiwan

  • Research Site

    Taipei, 235, Taiwan

  • Research Site

    Taoyuan, 333, Taiwan

Conditions

Explore the condition pages connected to this study.