68Ga-PSMA tumor uptake assessed by positron emission tomography/computed tomography (PET/CT) was 1.3% injected activity per gram tissue (%IA/g) for 22Rv1 xenografts, 13.1%IA/g for C4-2 and 22.3%IA/g for LNCaP tumors, respectively (Figure 1A). The gene discussed is FOLH1; the disease is neoplasm.