We initially investigated the expression and cellular distribution of UGT2B17 in benign prostatic tissue and in prostate tumours using the monoclonal anti-UGT2B17 antibody (EL-2B17mAb), for which the specificity was recently reported.24 In normal prostate epithelial cells (n = 3), UGT2B17 displayed mostly a nuclear/perinuclear staining (Supplementary Table 2). Here, UGT2B17 is linked to prostate neoplasm.