FCGR3A and posterior cortical atrophy: Interestingly, results suggest FCGR3A was markedly positively correlated with M1 macrophages and T cells but not with NK cells and monocytes in PCa bone metastatic tissues, which may indicate that NK cells and monocytes were not dominant and FCGR3A may be mainly expressed in macrophages in bone metastases of PCa.