Peptides derived from the main synaptosomal proneuropeptidesof cholecystokinin (CCK), CHGA, CHGB, SCG2, VGF, and SCG3 (Figure 2c) are indicatedfor those only in AD, only in control, and shared in both AD and controlgroups (Table S1 and Figures S1–S5). Here, VGF is linked to Alzheimer disease.