Target-based classification of drugs [BR:br08310] Enzymes Hydrolases (EC3) Aspartic peptidases [EC:3.4.23.-] PSEN1/PSENEN/NCSTN/APH1A [HSA:5663 55851 23385 51107] [KO:K04505 K06170 K06171 K06172] D09377 Semagacestat (USAN/INN)