The pretreatment albumin to globulin ratio has predictive value for long-term mortality in nasopharyngeal carcinoma

Abstract

Background: Low serum albumin is predictive of poor survival in nasopharyngeal carcinoma (NPC). We evaluated the ability of the pretreatment albumin/globulin ratio (AGR) to predict long-term mortality in patients with NPC. Methods: This retrospective study examined an unselected cohort of 694 patients with NPC who had documented pretreatment total serum protein and serum albumin levels (ALB). AGR was calculated as [AGR = ALB/(total serum protein - ALB)]. Survival analysis was used to evaluate the predictive value of AGR. Results: Multivariate analysis demonstrated that a low pretreatment serum AGR (<1.4) was an independent predictor of poor OS (P = 0.029) and DMFS (P = 0.033). A low AGR was significantly associated with advanced stage disease (P<0.001), high white blood cell count (P = 0.033), high neutrophil count (P = 0.047), high total serum protein (P<0.001) and low ALB (P<0.001). Conclusion: The pretreatment AGR may represent a simple, potentially useful predictive biomarker for evaluating the longterm prognosis of patients with undifferentiated NPC. © 2014 Du et al.