Editor's Pick Original Investigation

Trastuzumab Rezetecan in ERBB2-Low Advanced Breast Cancer

JAMA 10.1001/jama.2026.21372

October 23, 2026 at 7:40 AM EDT

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Trastuzumab rezetecan provided significant progression-free survival benefit over physician’s choice of chemotherapy in patients with ERBB2-low advanced breast cancer, with benefit observed across all key subgroups. It exhibited the potential as a new treatment option with a distinct safety profile in this setting.

This paper has an accompanying Editorial.

MEETING INFORMATION:

This paper publishes simultaneously with a presentation at ESMO Congress 2026.

Corresponding Author: Binghe Xu, MD, PhD, Department of Medical Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing Key Laboratory of Innovative Drug Research and Translational Study for Breast Cancer and State Key Laboratory of Advanced Medical Materials and Devices, 17 Panjiayuan South Lane, Chaoyang District, Beijing, 100021, China (xubinghe@medmail.com.cn).

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