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Exploration and Validation of C-Reactive Protein/Albumin Ratio as a Novel Inflammation-Based Prognostic Marker in Nasopharyngeal Carcinoma.
Journal of Cancer 2016
BACKGROUND: The prognostic value of C-reactive protein/albumin ratio (CRP/Alb), a novel inflammation-based marker, remains unknown in nasopharyngeal carcinoma (NPC).
METHODS: We conducted a retrospective review of 1572 consecutive patients with non-metastatic NPC. Patients were randomly divided into a training set (n = 514) and validation set (n = 1058). The prognostic value of the CRP/Alb ratio and the modified Glasgow prognostic score (mGPS; a well-recognized inflammation-based score) was assessed.
RESULTS: Receiver-operating characteristic analysis identified 0.05 as the optimal CRP/Alb cut-off value for disease failure in the training set. Patients with a CRP/Alb > 0.05 had poorer overall survival (OS), distant metastasis-free survival (DMFS) and disease-free survival (DFS) in the training set (all P < 0.05). These results were confirmed in the validation set (all P < 0.05) and the whole cohort (all P < 0.001). In multivariate analysis of the entire cohort, the pretreatment CRP/Alb ratio was an independent prognostic factor for OS (HR, 1.394; 95% CI, 1.004-1.937; P = 0.048) and DMFS (HR, 1.545; 95% CI, 1.124-2.122; P = 0.007), but not for DFS (P = 0.083). The mGPS had no significant independent prognostic value for any end-point.
CONCLUSION: CRP/Alb ratio is an useful prognostic indicator in patients with NPC, independent of disease stage.
METHODS: We conducted a retrospective review of 1572 consecutive patients with non-metastatic NPC. Patients were randomly divided into a training set (n = 514) and validation set (n = 1058). The prognostic value of the CRP/Alb ratio and the modified Glasgow prognostic score (mGPS; a well-recognized inflammation-based score) was assessed.
RESULTS: Receiver-operating characteristic analysis identified 0.05 as the optimal CRP/Alb cut-off value for disease failure in the training set. Patients with a CRP/Alb > 0.05 had poorer overall survival (OS), distant metastasis-free survival (DMFS) and disease-free survival (DFS) in the training set (all P < 0.05). These results were confirmed in the validation set (all P < 0.05) and the whole cohort (all P < 0.001). In multivariate analysis of the entire cohort, the pretreatment CRP/Alb ratio was an independent prognostic factor for OS (HR, 1.394; 95% CI, 1.004-1.937; P = 0.048) and DMFS (HR, 1.545; 95% CI, 1.124-2.122; P = 0.007), but not for DFS (P = 0.083). The mGPS had no significant independent prognostic value for any end-point.
CONCLUSION: CRP/Alb ratio is an useful prognostic indicator in patients with NPC, independent of disease stage.
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