The patients’ characteristics, including the age, Gleason score, presence of visceral metastasis, presence of lymph node metastasis, presence of symptoms, performance status, albumin (Alb), alkaline phosphatase (ALP), hemoglobin (Hb), creatinine (Cre), prostate‐specific antigen (PSA), LDH, and PMID, are summarized in Table 1. The gene discussed is ALB; the disease is metastatic malignant neoplasm in the lymph nodes.