We could not determine any risk factors for infectious complications (age p = 0.44, diabetes mellitus p = 0.23, indwelling catheter p = 0.26, number of cores p = 0.6, prostate volume p = 0.44), post-interventional bleeding (age p = 0.75, under anticoagulant agent p = 0.5, number of cores p = 0.14, prostate volume p = 0.10), PSA level < 20 vs. > 20 ng/ml p = 0.12). The gene discussed is KLK3; the disease is diabetes mellitus.