Among the chondrosarcoma subtypes, 70% of mesenchymal chondrosarcomas, considered a high-grade bone sarcoma, showed strong PSMA expression in the neovasculature, while clear cell chondrosarcoma, considered to be of low to intermediate grade, showed strong PSMA labelling in 37.5% of the tumors. Here, FOLH1 is linked to chondrosarcoma.