Abstract

The epidermal growth factor receptor (EGFR) is overexpressed in a significant percentage of human malignancies and its expression is associated with tumor aggressiveness and treatment resistance. The monoclonal antibody cetuximab (IMC-C225) blocks the ligand binding domain of EGFR, preventing downstream signaling and is increasingly used in a clinical setting. To assess in vivo binding of cetuximab to EGFR, we developed a new imaging probe using cetuximab labeled with the PET isotope Zirconium-89.

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