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Pretreatment serum pseudocholinesterase level as a novel prognostic biomarker for upper tract urothelial carcinoma.
International Urology and Nephrology 2016 December
PURPOSE: Pretreatment serum pseudocholinesterase (PChE) has been reported to be a prognostic predictor in several cancers. However, the prognostic significance of serum PChE level in patients with upper tract urothelial carcinoma (UTUC) remains unknown.
METHODS: A total of 180 patients who underwent radical nephroureterectomy (RNU) for UTUC were included in this retrospective analysis. The associations of pretreatment serum PChE levels with clinicopathological characteristics and clinical outcomes were assessed.
RESULTS: The median (IQR) pretreatment serum PChE level was 6385 (5449-7260) IU/L, and an optimal cutoff value of 5336 IU/L was set according to ROC analysis. Decreased pretreatment serum PChE levels were significantly correlated with older patient age, higher preoperative chronic kidney disease (CKD) stage and pT stage (all P < 0.05). On multivariate analysis, adjusting for preoperative variables, decreased pretreatment serum PChE levels independently predicted higher pT stage (P = 0.011). Moreover, Kaplan-Meier curves suggested that patients with PChE levels <5336 IU/L were predicted to have a shorter overall survival (OS) and cancer-specific survival (CSS) than those with PChE levels ≥5336 IU/L (both P < 0.001). On multivariate analysis, decreased pretreatment serum PChE levels were significantly associated with shorter OS (HR 0.553; 95 %CI 0.322-0.951; P = 0.032) and CSS (HR 0.484; 95 %CI 0.269-0.870; P = 0.015).
CONCLUSIONS: Decreased pretreatment serum PChE level is an independent predictor for higher pT stage, shorter OS and CSS in patients with UTUC. Pretreatment serum PChE levels may act as a simple and effective parameter to predict prognosis for UTUC patients after RNU.
METHODS: A total of 180 patients who underwent radical nephroureterectomy (RNU) for UTUC were included in this retrospective analysis. The associations of pretreatment serum PChE levels with clinicopathological characteristics and clinical outcomes were assessed.
RESULTS: The median (IQR) pretreatment serum PChE level was 6385 (5449-7260) IU/L, and an optimal cutoff value of 5336 IU/L was set according to ROC analysis. Decreased pretreatment serum PChE levels were significantly correlated with older patient age, higher preoperative chronic kidney disease (CKD) stage and pT stage (all P < 0.05). On multivariate analysis, adjusting for preoperative variables, decreased pretreatment serum PChE levels independently predicted higher pT stage (P = 0.011). Moreover, Kaplan-Meier curves suggested that patients with PChE levels <5336 IU/L were predicted to have a shorter overall survival (OS) and cancer-specific survival (CSS) than those with PChE levels ≥5336 IU/L (both P < 0.001). On multivariate analysis, decreased pretreatment serum PChE levels were significantly associated with shorter OS (HR 0.553; 95 %CI 0.322-0.951; P = 0.032) and CSS (HR 0.484; 95 %CI 0.269-0.870; P = 0.015).
CONCLUSIONS: Decreased pretreatment serum PChE level is an independent predictor for higher pT stage, shorter OS and CSS in patients with UTUC. Pretreatment serum PChE levels may act as a simple and effective parameter to predict prognosis for UTUC patients after RNU.
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