CXCL13 and posterior cortical atrophy: In order to confirm the high expression of CXCL13 in primary PCa tissues, we performed qRT-PCR analysis in 137 clinical samples (Gleason score were 7-10), 7 (5.11%) showed less than 1-fold increased, 24 (17.52%) showed 1∼5-fold increased, 40 (29.20%) showed more than 5∼10-fold increased and 66 (48.18%) showed more than 10-fold increased (Figure 1B).