KLK3 and metastasis: The median age of metastasis onset was 69 years (61–75), with a median PSA of 10.01 ng/ml (7.03–17.38) and a median PV of 19.72 ml (18.15–25.35); the mean D90 for the LDR group was 144 Gy (1 standard deviation = 20.58 Gy).