The Prognostic Value of Integration of Pretreatment Serum Amyloid A (SAA)-EBV DNA (S-D) Grade in Patients with Nasopharyngeal Carcinoma

Overview

Journal Clin Transl Med

Publisher Wiley

Specialty General Medicine

Date 2020 Jan 8

PMID 31907639

Citations 5

Authors

Jianpei Li

Changchun Lai

Songguo Peng

Hao Chen

Lei Zhou

Yufeng Chen

Shulin Chen

Affiliations

Soon will be listed here.

Abstract

Background: Serum amyloid A (SAA) has been associated with the development and prognosis of cancer. The purpose of this study was to evaluate the predictive value of integration of pretreatment SAA-EBV DNA (S-D) grade and comparison with the TNM staging system in patients with nasopharyngeal carcinoma (NPC). The S-D grade was calculated based on the cut-off values of serum SAA and EBV DNA copy numbers which were determined by receiver operating characteristic (ROC) curves. We evaluated the prognostic value of pretreatment SAA, EBV DNA and S-D grade on overall survival (OS) of NPC patients. We also evaluated the predictive power of S-D grade with TNM staging system using 4 indices: concordance statistics (C-index), time-dependent ROC (ROCt) curve, net reclassification index (NRI) and integrated discrimination improvement (IDI).

Results: A total of 304 NPC patients were enrolled in this study. Multivariate analysis showed that TNM stage (P = 0.007), SAA (P = 0.013), and EBV DNA (P = 0.033) were independent prognostic factors in NPC. The S-D grade was divided into S-D grade 1, S-D grade 2, and S-D grade 3, which had more predictive accuracy for OS than TNM staging according to all 4 indices.

Conclusions: We found that the S-D grade could be used as a new tool to predict the OS in NPC patients.

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