FAAH and colorectal cancer: One example is colorectal cancer: The FAAH inhibitor AA-5HT (in vitro IC50 = 5.6 μM) inhibits the growth and proliferation of Caco-2 cells [51], whereas human colon adenocarcinoma Colo-205 cells show reduced viability, migration, and invasion capabilities after incubation with the FAAH inhibitor PF-3845 (IC50 = 2.6 nM) [36, 52].