Factorial Discriminant Analysis (FAD) carried out to describe the variables that discriminate the three groups of patients. RAR beta 2, ER alpha, RGMA and PGR variables conflict to EZH2. Variable SRC3 being away from the circle, it wears a low information (left panel). The graphical representation of patients was used to identify homogeneous groups within the population from the point of view of variable studied (H3K27me3). Red plots represent normal patients (N), green plots represent patients with Gleason score ≤ 7 (<=7) and blue plots represent patients with Gleason score >7 (>7) (right panel).