KLK3 and metastatic neoplasm: The median PSA levels in patients with localised disease were 5.2 ng ml−1 (range 1.86–15.8), 19.2 ng ml−1 (range 8.6–96.7) and 113.5 ng ml−1 (range 23.7–450.2), in patients with locally advanced and metastatic disease, respectively (2).