Due to its overexpression in the tumor environment, combined with low expression in most normal tissues, FAP is considered as an important target for diagnostic imaging and anti-cancer therapies in nuclear medicine (Gascard and Tlsty 2016; Lamprecht et al. 2018; Lindner et al. 2019; Marsh et al. 2013; Plava et al. 2019; Pure and Lo 2016; Calais 2020). This evidence concerns the gene FAP and neoplasm.