RAB17 and posterior cortical atrophy: Immune analysis revealed that overexpression of PPP1R14B was related to the increase of ALKBH2, UCK2, RAC3 and RAB17 and the decrease of CD40, DKK3, COL17A1 and PGRMC1, which would result in downregulation of plasma cells, upregulation of T regulatory cells and disorder of macrophage proportion to suppress adaptive immune directed against PCa.