Pilot Study Evaluating Tumor Microenvironment Interaction in Solid Tumor Patients

This pilot study aims to compare PET/CT imaging using 68Ga-FAPI-46 to imaging results from standard MRI or CT with contrast in patients with solid tumors undergoing biologic therapy. A total of 50 participants will receive an intravenous injection of 68Ga-FAPI-46 and undergo a PET/CT scan shortly after received the study drug. Imaging will occur before starting standard antibody-based therapy. Participants will then proceed with their treatment, and the study team will monitor them through chart reviews for up to 36 months to evaluate treatment response and any correlation with tumor uptake observed on PET/CT scans.