MUC5AC and neoplasm: For instance, cyclin-dependent kinase 3 and actin beta-like 2 have been presented as potential tumor markers detected in tissue samples [129], while apolipoprotein A2 [130], heatshock protein 90α [131], dickkopf-1 [132], dysbindin [133], MUC5AC [134], TIMP-1 [135], vitronectin, dermcidin [136], transthyretin, and angiotensinogen [137] have been identified in serum.