The in vivo specificity of [66Ga]Ga-DFO-ZEGFR:2377 binding to EGFR in tumor xenografts was evaluated by pre-saturation of receptors using the monoclonal anti-EGFR antibody cetuximab, which binds to the same epitope as ZEGFR:2377 (Figure 4). This evidence concerns the gene EGFR and neoplasm.