As shown in Table 3, the results found that the expression levels of DLX1 and miR‐539 were not statistically related to age and family history of patients with PCa (P > 0.05), but were associated with lymph node metastasis, pathological stages, tumour size and Gleason scores of PCa (P < 0.05). The gene discussed is DLX1; the disease is metastatic malignant neoplasm in the lymph nodes.