FCGR3A and posterior cortical atrophy: The FCGR3A expression in PCa bone metastatic tissues was higher than that in the primary PCa tissues (p=0.0487, Figure 7A), and higher FCGR3A was unfavorable to the prognosis of PCa patients in the training set (p=0.004, Figure 7B) and the validation set (p=0.037, Figure 7B).