CD163 and neoplasm: Tumors from BCG failure present few effector cells and more suppressive immune cells, for an example, CD4+ subpopulation and GATA3+ T cells (a master regulator of T helper 2-cell differentiation) are scarce in a tumor; expression of FOXP3+ (forkhead box P3, also known as scurfin) and CD25+ Tregs as well as CD68+ and CD163+ (markers of M2 macrophage) tumor-associated macrophages are high in TME30.