GRPR and pachyonychia congenita: Imaging studies showed that the PC-3 tumor xenograft could be clearly visualized in PET images using all three 68Ga-labeled tracers ([68Ga]Ga-LW01158, [68Ga]Ga-LW01186, and [68Ga]Ga-LW02002), confirming their good in vivo GRPR-targeting capabilities.