When 8.1–10.2 MBq of 89Zr-T was administered 1 day following FDG-PET, the ROI-based tumor uptake values at 48 h p.i. were 20.0 ± 2.1 %IA/g and 7.4 ± 1.4 %IA/g for the HER2+ N87 and HER2− MKN-74 tumors, respectively. Here, ERBB2 is linked to neoplasm.