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

Xiao-Jing Du, Ling-Long Tang, Yan-Ping Mao, Ying Sun, Mu-Sheng Zeng, Tie-Bang Kang, Wei-Hua Jia, Ai-Hua Lin, Jun Ma
PloS One 2014, 9 (4): e94473

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 long-term prognosis of patients with undifferentiated NPC.

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