In the present study, further interpretation showed that the cancer detection rates for PSA subgroups of 4.0 to 10.0, 10.0 to 20.0, 20.0 to 100.0, and ≥ 100.0 ng/ml were 22.6, 36.0, 59.1, and 93.5%, respectively (Table 2). This evidence concerns the gene KLK3 and cancer.