Human Epidermal Growth Factor Receptor 2-Targeting [⁶⁸Ga]Ga-ABY-025 PET/CT Predicts Early Metabolic Response in Metastatic Breast Cancer.

ABSTRACT: Imaging using the human epidermal growth factor receptor 2 (HER2)-binding tracer ⁶⁸Ga-labeled Z_HER2:2891-Cys-MMA-DOTA ([⁶⁸Ga]Ga-ABY-025) was shown to reflect HER2 status determined by immunohistochemistry and in situ hybridization in metastatic breast cancer (MBC). This single-center open-label phase II study investigated how [⁶⁸Ga]Ga-ABY-025 uptake corresponds to biopsy results and early treatment response in both primary breast cancer (PBC) planned for neoadjuvant chemotherapy and MBC. Methods: Forty patients with known positive HER2 status were included: 19 with PBC and 21 with MBC (median, 3 previous treatments). [⁶⁸Ga]Ga-ABY-025 PET/CT, [¹⁸F]F-FDG PET/CT, and core-needle biopsies from targeted lesions were perfor

SUBMITTER: Alhuseinalkhudhur A 

PROVIDER: S-EPMC10478820 | biostudies-literature | 2023 Sep

REPOSITORIES: biostudies-literature