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Prognostic value of pretreatment serum levels of lactate dehydrogenase in nonmetastatic nasopharyngeal carcinoma: single-site analysis of 601 patients in a highly endemic area

Authors Wei Z, Zeng X, Xu J, Duan X, Xie Y

Received 27 December 2013

Accepted for publication 20 February 2014

Published 15 May 2014 Volume 2014:7 Pages 739—749


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Zhengbo Wei,1 Xianjie Zeng,1 Jian Xu,1 Xuwei Duan,1 Ying Xie2

1Department of Head and Neck Tumor Surgery, Affiliated Tumor Hospital of Guangxi Medical University, 2Guangxi Key Laboratory for High-Incidence Tumor Prevention and Treatment, Experimental Center of Medical Science of Guangxi Medical University, Nanning, People’s Republic of China

Background: Numerous studies have generated promising but incomplete evidence for the prognostic value of pretreatment serum levels of lactate dehydrogenase (S-LDH) in nasopharyngeal carcinoma (NPC).
Methods: Pretreatment serum levels of S-LDH in 601 patients with NPC were measured before treatment, and their associations with overall survival and tumor-free survival were studied. Univariate and multivariate analysis of subgroups was used to evaluate the prognostic value of S-LDH in early-stage and late-stage NPC separately.
Results: Pretreatment S-LDH levels were significantly lower in T1+2 patients than in T3+4 patients, lower in N0+1 patients than in N2+3 ones, and lower in stage I + II patients than in III + IV ones. Multivariate analysis showed that among patients with late-stage NPC, high pretreatment S-LDH levels >225 U/L were an independent predictor of poor overall survival and tumor-free survival. Among patients with early-stage NPC, pretreatment S-LDH levels >171 U/L, which overlap with the normal range, were an independent predictor of shorter overall survival and tumor-free survival.
Conclusion: Pretreatment S-LDH levels may be a reliable biomarker for predicting the long-term prognosis of patients with early-stage or late-stage NPC.

Keywords: nasopharyngeal carcinoma, serum lactate dehydrogenase, prognosis, late stage, early stage

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