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  • Title: Prognostic role of the preoperative serum albumin : globulin ratio after radical nephroureterectomy for upper tract urothelial carcinoma.
    Author: Otsuka M, Kamasako T, Uemura T, Takeshita N, Shinozaki T, Kobayashi M, Komaru A, Fukasawa S.
    Journal: Int J Urol; 2018 Oct; 25(10):871-878. PubMed ID: 30103271.
    Abstract:
    OBJECTIVES: To elucidate the effects of the preoperative albumin : globulin ratio on the survival of patients with upper tract urothelial carcinoma after radical nephroureterectomy. METHODS: We retrospectively reviewed 124 consecutive patients with upper tract urothelial carcinoma who underwent radical nephroureterectomy at Chiba Cancer Center, Chiba, Japan between 2002 and 2015. The albumin : globulin ratio was defined: albumin / (total protein - albumin). Associations between preoperative clinicopathological factors, including the albumin : globulin ratio, and recurrence-free survival, cancer-specific survival and overall survival were assessed. The log-rank test and Cox proportional hazards models were used for univariate and multivariable analyses, respectively. The study cohort was separated into two groups based on the optimal albumin : globulin ratio cut-off value determined using receiver operating characteristic curve analysis. RESULTS: The median survival time was 55 months (interquartile range 28-76 months), and 31 patients died during follow up. A low preoperative albumin : globulin ratio <1.40 was associated with tumor grade and surgical margin status. Kaplan-Meier analyses showed that a low albumin : globulin ratio was more significantly correlated with worse recurrence-free survival, cancer-specific survival and overall survival. Multivariate analyses showed that a low albumin : globulin ratio was an independent predictive factor associated with poor recurrence-free survival (hazard ratio 3.758; P = 0.0028), cancer-specific survival (hazard ratio 5.687; P = 0.0044) and overall survival (hazard ratio 3.124; P = 0.0030). CONCLUSIONS: A low albumin : globulin ratio is an independent predictive factor associated with poor prognosis in upper tract urothelial carcinoma patients treated with radical nephroureterectomy.
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