This clinical trial is focused on studying a type of breast cancer known as metastatic breast cancer (mBC). Specifically, it looks at different subtypes of this cancer, including hormone receptor-positive/HER2-negative, triple-negative, and HER2-positive mBC. The study uses a special diagnostic tool called 68Ga-ABS011, which is a solution for injection. This tool is used in a type of imaging called Positron Emission Tomography and Computed Tomography (PET/CT) to help doctors see how the cancer is behaving in the body.
The purpose of the study is to evaluate how well the 68Ga-ABS011 PET/CT works compared to the standard tests currently used to check the status of a protein called HER2 in breast cancer. During the study, participants will receive an injection of 68Ga-ABS011, and then undergo a PET/CT scan. This will help doctors determine if the new method provides better or additional information compared to the usual tests. The study will also monitor any side effects that participants might experience from the injection or the scan.
Participants in the study will have several visits over a period of time, during which they will undergo the PET/CT scan and possibly a biopsy, which is a procedure to take a small sample of tissue for testing. The study aims to see if the new imaging method can help guide treatment decisions and improve the management of metastatic breast cancer. The trial is expected to continue until the end of 2025.



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