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New hope for advanced breast cancer: drug shows promise against brain tumors

NCT ID NCT04739761

Ongoing Disease control Sponsor: AstraZeneca Source: ClinicalTrials.gov ↗

First seen Nov 01, 2025 · Last updated May 13, 2026 · Updated 19 times

Summary

This study tests a drug called trastuzumab deruxtecan (T-DXd) in about 500 people with advanced HER2-positive breast cancer that has spread or cannot be removed. Some participants have brain metastases, others do not. The goal is to see how well the drug shrinks tumors and how long it keeps the cancer from growing. This is an open-label study, meaning everyone knows they are getting the drug.

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This is a summary of the original study . Summaries may miss details or leave out important information. Before applying or accepting participation, make sure you have read and understood the full study. Curemydisease.com takes no responsibility whatsoever for anything missed, misunderstood, or acted upon as a result of our summary — we know it does not capture everything.

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Contacts and locations

Locations

  • Research Site

    Boston, Massachusetts, 02215, United States

  • Research Site

    Durham, North Carolina, 27710, United States

  • Research Site

    Adelaide, 5000, Australia

  • Research Site

    Auchenflower, 4066, Australia

  • Research Site

    Clayton, 3168, Australia

  • Research Site

    Heidelberg, 3084, Australia

  • Research Site

    St Leonards, 2065, Australia

  • Research Site

    Subiaco, 6008, Australia

  • Research Site

    Anderlecht, 1070, Belgium

  • Research Site

    Bruges, 8000, Belgium

  • Research Site

    Leuven, 3000, Belgium

  • Research Site

    Liège, 4000, Belgium

  • Research Site

    Vancouver, British Columbia, V5Z 1H7, Canada

  • Research Site

    Toronto, Ontario, M4N 3M5, Canada

  • Research Site

    Copenhagen, 2100, Denmark

  • Research Site

    Herlev, 2730, Denmark

  • Research Site

    Odense C, 5000, Denmark

  • Research Site

    Helsinki, 00290, Finland

  • Research Site

    Tampere, FI-33521, Finland

  • Research Site

    Turku, 20520, Finland

  • Research Site

    Berlin, 13125, Germany

  • Research Site

    Dresden, 1307, Germany

  • Research Site

    Erlangen, 91054, Germany

  • Research Site

    Essen, 45136, Germany

  • Research Site

    Frankfurt, 60389, Germany

  • Research Site

    Hamburg, 20246, Germany

  • Research Site

    Hanover, 30625, Germany

  • Research Site

    Kiel, 24105, Germany

  • Research Site

    Mannheim, 68167, Germany

  • Research Site

    München, 80336, Germany

  • Research Site

    München, 80637, Germany

  • Research Site

    Münster, 48149, Germany

  • Research Site

    Tübingen, 72076, Germany

  • Research Site

    Cork, T12 DV56, Ireland

  • Research Site

    Dublin, 7, Ireland

  • Research Site

    Dublin, D04 Y8V0, Ireland

  • Research Site

    Ancona, 60122, Italy

  • Research Site

    Bergamo, 24127, Italy

  • Research Site

    Catania, 95126, Italy

  • Research Site

    Milan, 20132, Italy

  • Research Site

    Naples, 80131, Italy

  • Research Site

    Padova, 35128, Italy

  • Research Site

    Prato, 59100, Italy

  • Research Site

    Isehara, 259-1193, Japan

  • Research Site

    Kawasaki-shi, 216-8511, Japan

  • Research Site

    Sapporo, 003-0804, Japan

  • Research Site

    Shinagawa-ku, 142-8666, Japan

  • Research Site

    Yokohama, 241-8515, Japan

  • Research Site

    Maastricht, 6229 HX, Netherlands

  • Research Site

    The Hague, 2545 AA, Netherlands

  • Research Site

    Bergen, 5009, Norway

  • Research Site

    Oslo, 450, Norway

  • Research Site

    Oslo, N-0379, Norway

  • Research Site

    Gdansk, 80-214, Poland

  • Research Site

    Krakow, 31-501, Poland

  • Research Site

    Opole, 45-060, Poland

  • Research Site

    Warsaw, 02-781, Poland

  • Research Site

    Warsaw, 04-141, Poland

  • Research Site

    Lisbon, 1400-048, Portugal

  • Research Site

    Lisbon, 1649-035, Portugal

  • Research Site

    Porto, 4099-001, Portugal

  • Research Site

    Barcelona, 08036, Spain

  • Research Site

    Barcelona, 8035, Spain

  • Research Site

    Bilbao (Vizcaya), 48013, Spain

  • Research Site

    Granada, 18014, Spain

  • Research Site

    Madrid, 28005, Spain

  • Research Site

    Madrid, 28034, Spain

  • Research Site

    Madrid, 28041, Spain

  • Research Site

    Salamanca, 37007, Spain

  • Research Site

    Santander, 39008, Spain

  • Research Site

    Santiago de Compostela-Coruña, 15706, Spain

  • Research Site

    Seville, 41013, Spain

  • Research Site

    Valencia, 46009, Spain

  • Research Site

    Gothenburg, 413 45, Sweden

  • Research Site

    Lund, 221 85, Sweden

  • Research Site

    Uppsala, 751 85, Sweden

  • Research Site

    Basel, 4031, Switzerland

  • Research Site

    Bellinzona, CH-6500, Switzerland

  • Research Site

    Lausanne, 1011, Switzerland

  • Research Site

    Lucerne, 6000, Switzerland

  • Research Site

    Edinburgh, EH4 2XR, United Kingdom

Conditions

Explore the condition pages connected to this study.

BREAST CANCER