Abstract
Background
Early diagnosis of nasopharyngeal carcinoma (NPC) needs more reliable biomarkers. The aim of this study was to investigate serum cytokeratin 19 fragment 21.1 (CYFRA21-1) as an NPC biomarker based on data from a large sample.
Methods
From October 2010 to February 2014, 529 subjects were enrolled and divided into three groups—NPC group (n = 274), healthy control group (n = 175) and nasal inflammatory disease group (n = 80). Serum CYFRA21-1 levels were measured prior to radiotherapy/chemoradiotherapy, and their associations with T, N, and clinical classification were determined. Receiver operating characteristic curve analysis was performed to discriminate the NPC group from the healthy control and nasal inflammatory disease groups. Three Epstein–Barr virus (EBV) antibodies and their correlations with serum CYFRA21-1 levels were analyzed.
Results
Pretreatment serum CYFRA21-1 levels were significantly elevated in the NPC group compared with the other groups (p < 0.01), Furthermore, serum CYFRA21-1 levels decreased significantly after radiotherapy (p < 0.01). Serum CYFRA21-1 levels were closely related to T, N, and clinical classifications. The area under the curve, sensitivity and specificity of the serum CYFRA21-1 levels in the NPC patients were 0.89, 0.87 and 0.83, respectively. Strong correlations were observed between serum CYFRA21-1 levels and EBV antibodies.
Conclusion
Serum CYFRA21-1 may be a reliable and effective biomarker for NPC.
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Acknowledgments
This project was supported by funds from the People’s Republic of China Ministry of Science and Technology. The Project Number is 2011ZX09101-001.
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All authors declared they had no conflict of interest.
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X. Song and Z. Wang contributed equally and are co-first authors.
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Song, Xm., Wang, Zj., Cao, Wj. et al. The value of circulating CYFRA21-1 expression in patients with nasopharyngeal carcinoma: a study of 529 subjects. Int J Clin Oncol 21, 1038–1045 (2016). https://doi.org/10.1007/s10147-016-1020-y
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DOI: https://doi.org/10.1007/s10147-016-1020-y