TACSTD2 and posterior cortical atrophy: Interestingly, consistent with current knowledge that intratumoral B-cell infiltration is higher in PCa than the extratumoral B-infiltrates in adjacent benign prostate tissue regions [17], we found that GSE1 expression was 8.29-fold more correlated with B-cell infiltration than TACSTD2 expression (GSE1: partial cor = 0.26, p = 1.24 × 10−7, vs. TACSTD2: partial cor = 0.03, p = 0.53) (Figure 4G).