Abstract:Objective To investigate expression level of miR-802 and RAB23 in prostate cancer and its clinical significance. Methods Totally 60 cases of prostate cancer tissues were selected and their adjacent tissues were control group. Immunohistochemistry was used to detect the expression of miR-802 and RAB23. Then the relationship between the expression of miR-802 and RAB23 and the clinicopathological parameters was analyzed, as did the prognosis of prostate cancer patients. Results The positive rates of miR-802 and RAB23 in prostate cancer tissues were 73.33% and 70.00%, respectively, which were higher than 33.33% and 28.33% in adjacent normal tissues (P?0.05). The expression levels of miR-802 and RAB23 were not significantly correlated with age and preoperative PSA (P?>?0.05), but were negatively correlated with the Gleason score (P?0.05) and pathological stage (P?0.05); the 3-year survival rate and survival time of the miR-802 and RAB23 negative expression groups were significantly higher than those of the miR-802 and RAB23 positive expression groups (P?0.05). Conclusions The expression levels of miR-802 and RAB23 mRNA are higher in prostate cancer tissues than those in adjacent normal tissues. The patients with negative expression of miR-802 and RAB23 can achieve better prognosis.