Although the tumor-to-muscle ratio seems to be significantly higher for [18F]AlF-PSMA-11, the absolute uptake values in the muscle are relatively low (0.13 ± 0.03 for [18F]PSMA-1007 compared to 0.07 ± 0.02 for [18F]AlF-PSMA-11), which renders this parameter clinically less relevant. This evidence concerns the gene FOLH1 and neoplasm.