In contrast to MCT1 (Figure 1B) we observed that the overall percentage of positive cases for the expression of MCT4 (Figure 1C) and glycolysis‐related proteins (Figure1D) increase from non‐neoplastic tissue to PIN lesions and localized tumour, being most highly expressed in almost all metastatic PCa tissues analysed. This evidence concerns the gene SLC16A3 and prostate intraepithelial neoplasia.