PSMB9 and neoplasm: Our results show that PSMB8- and PSMB9-expressing tumor cells increased with grades (Fig. 6A), while PSMB9-expressing stromal cells increased only between the lowest and the highest grades of our cohort (Fig. 6B, right panel) and the amount of PSMB8-positive stromal cells, as well as PSMB8- and PSMB9-expressing immune cells did not vary according to the grade of the disease (Fig. 6B, left panel and C).