FOLH1 and neoplasm: A preliminary study of advanced salivary adenoid cystic carcinomas showed promising results in 10 patients, including high concordance with [18F] fluorodeoxyglucose (FDG)-PET/CT findings and immunoexpression of PSMA on tumor cells themselves (luminal staining showed a highly overregulated profile of PSMA expression that is rarely seen in non-PCa tumors) [73].