MEN1 and posterior cortical atrophy: The correlation between HSP27 and Menin expression in tissue showed that these biomarkers are not correlated in non-aggressive and moderately aggressive, PCa (r = 0.143; R = 0.020; p = 0.582) and (r = 0.245; R = 0.060; p = 0.294), respectively, but are significantly positively correlated in tissue of patients with aggressive PCa (r = 0.606; R = 0.367; p = 0.004) (Figure 4b).