This finding was supported by the results of the multivariable Cox regression analyses adjusted for clinical factors such as age, PSA levels at diagnosis, pathological stage, Gleason score, surgical margin status, and lymph node metastasis (adjusted HR = 0.39, 95% CI = 0.23–0.66, p = 0.001; Table 1 and Figure 1C). The gene discussed is KLK3; the disease is metastatic malignant neoplasm in the lymph nodes.