While the upregulation of LEDGF/p75 in prostate tumors is consistent with our previous reports [11,23], the observed ERp57 upregulation in these tumors (62% of prostate tumor tissues versus 24% of control tissues) appears to be inconsistent with a previous study showing downregulation of this protein in PCa tissue compared to normal adjacent tissue [65]. Here, PSIP1 is linked to prostate neoplasm.