SLC7A5 and neoplasm: In tumor imaging using amino acid-based PET probes, their transport through upregulated LAT1 [13, 19, 25, 26] and ATB0,+ [13] is important for their high uptake into tumor cells, and the uptake of D-18F-FBPA into tumor cells may depend on the activity of these transporters, as reported previously for L-18F-FBPA [11, 12] and L- and D-11C-CMT [19].