In addition, the histological tumor diameter was also correlated with PHI (r = 0.52, p < 0.01), histology grade group (r = 0.37, p < 0.01), biopsy grade group (r = 0.32, p = 0.01), histology T stage (r = 0.32, p = 0.01), and PSA (r = 0.30, p = 0.01). This evidence concerns the gene KLK3 and neoplasm.