PSMB4 and neoplasm: In particular basal tumours, which are associated with increased EMT, had higher median levels of CALU, CCNF, FCGR1A, HOXC12, GFI1, LTBR, PSMB4, PAX6, SNAI1, SPOCK2, TNFRSF12A, TRIP13, and ZNF750 (Figure 4A).