Du E, Zhang C, Qin Z, Yang K, Li C, Wang A, Zhang Z, Xu Y. Low expression of TMEM67 is a critical predictor of poor prognosis in human urothelial carcinoma of the bladder.
Urol Oncol 2017;
35:152.e7-152.e12. [PMID:
28161324 DOI:
10.1016/j.urolonc.2016.10.014]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2016] [Revised: 10/15/2016] [Accepted: 10/19/2016] [Indexed: 11/29/2022]
Abstract
OBJECTIVES
The aim of the study was to evaluate the expression of TMEM67 in urothelial carcinoma of the bladder (UCB) tissues and to determine the potential relevance between the expression of TMEM67 and prognosis of UCB.
MATERIAL AND METHODS
In this study, the expression of TMEM67 mRNA was performed by quantitative real-time PCR in 80 UCB and 54 noncancerous tissues. The expression of TMEM67 protein was identified by immunohistochemistry and western blotting. Chi-square test was conducted to verify the relevance between the expression of TMEM67 and clinical parameters. Kaplan-Meier survival analysis was demonstrated between high or low expression level of TMEM67 mRNA and recurrence-free survival probability. Cox regression analysis was conducted to evaluate the relevance between the expression of TMEM67 and the prognosis in UCB.
RESULTS
Low expression of TMEM67 mRNA and protein was detected in most of UCB tissues using quantitative real-time polymerase chain reaction and western blotting, compared with noncancerous tissues. Low expressions of TMEM67 were associated with TNM stage, grade, and lymph node metastasis (P<0.05). Kaplan-Meier analysis showed that the low expression of TMEM67 mRNA had significantly shorter recurrence-free survival probability (P = 0.018). Cox regression analysis confirmed that low expression of TMEM67 mRNA predicted poor prognosis of patients with UCB (HR = 2.950, P = 0.029, 95% CI: 1.116-7.796).
CONCLUSIONS
TMEM67 expression is low in UCB tissues, and the TMEM67 low expression predicted poor prognosis of patients with UCB.
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