There was a significant association between strong FAM13C staining and early PSA recurrence if all tumors were jointly analyzed (p < 0.0001; 6.1), and also if the subgroups of ERG negative (p < 0.0001; Figure 6.2) and ERG positive (p < 0.0001; Figure 6.3) cancers were analyzed separately. Here, KLK3 is linked to cancer.