The following peptides, through their respective receptors, promote glioma progression (proliferation, migration, invasion, and angiogenesis): AMD, angiotensin II, GRP, bradykinin, CCK, endothelin, neuromedin B, neurotensin, and substance P (Figure 1 and Table 1) [38,49,52,53,60,61,99]. Here, CCK is linked to central nervous system cancer.