In line with the results of western blot analysis, the IRS of CCL18 protein in PCa tissues was also significantly higher than those in benign prostate tissues (CCL18: PCa = 4.09 ± 1.81 versus benign = 2.31 ± 2.11, P < 0.01, Figure 2(g)). Here, CCL18 is linked to posterior cortical atrophy.