Recent publications in the field of sarcoma highlight the potential of molecules such as fibroblast activation protein alpha (FAPα) present in the tumor microenvironment (TME) [7] or prostate-specific membrane antigen (PSMA) expressed by the neovasculature of the tumor [8] as promising targets for the radiotherapy of these malignancies [9]. This evidence concerns the gene FOLH1 and neoplasm.