FAP and cancer: According to a relevant study [39], the SUVmax, SUVmean and FAP immunohistochemistry scores of 68GA-FAPI-46 were higher in various cancer tissues than in adjacent non-cancer tissues: the SUVmax (7.7 vs. 1.6); the SUVmean (6.2 vs. 1.0); the FAP immunohistochemistry score (2.8 vs. 0.9).