The present study is a prospective study and consists of three work packages. First, clinical evaluations were made and biopsy samples were taken from patients who applied to the urology clinic, had serum PSA levels higher than 4 ng/ML, and were suspected of prostate cancer. Then, a pathological examination of the biopsy samples was performed and the patients were grouped into PCA and BPH. Finally, molecular analyses were performed on blood samples obtained from patients and healthy controls and all obtained data were statistically evaluated.