Immunohistochemical staining for EphA2 was performed using HT-1080 xenografts.<h4>Results</h4>On [<sup>89</sup>Zr]Zr-EphA2 mAb PET, a markedly high accumulation was observed in the tumor xenograft 1 day after administration (SUVmax, 11.8 ± 4.98), which increased on day 5 (SUVmax, 20.1 ± 6.42). This evidence concerns the gene EPHA2 and neoplasm.