Pairwise comparison of the p values using the Mann-Whitney test showed a significant difference in the FGD4 expression pattern between BPH, and PCA with Gleason Scores from 6 to 10 and CRPC tumors (Table 2), between PIN-Hi and CRPC tumors, and between PCA with Gleason Score 6, PCA with Gleason Scores 8–10 and CRPC tumors. Here, FGD4 is linked to benign prostatic hyperplasia.