Sensitivity and specificity of Epstein-Barr virus IGA titer in the diagnosis of nasopharyngeal carcinoma: a three-year institutional review

Head & Neck
Raymond K Y TsangC Andrew van Hasselt

Abstract

IgA antibody titers to the Epstein-Barr virus (EBV) viral capsid antigen (EBV IgA-VCA) and to the EBV early antigen (EBV IgA-EA) are used to screen for nasopharyngeal carcinoma (NPC). This study evaluates the sensitivity and specificity of EBV IgA-VCA and EBV IgA-EA titers in screening patients for NPC and in those diagnosed with NPC at our institution. The NPC status was determined for all patients who had their EBV IgA-VCA and EBV-IgA EA titers measured over a 3-year period, and the sensitivity and specificity were calculated. Five thousand one hundred ninety-six samples were analyzed. NPC was diagnosed in 215 patients. The sensitivity and specificity of a raised EBV IgA-VCA titer (> or =1:5) for diagnosing NPC were 89% and 80%, respectively, with a raised EbV IgA-EA titer (> or =1:5) having a sensitivity and specificity of 63% and 97%, respectively. Although the EBV IgA-VCA titer is sensitive for the diagnosis of NPC, it should not be used as the sole means of screening for NPC in a population in which NPC is endemic.

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Citations

Feb 4, 2016·Materials Science & Engineering. C, Materials for Biological Applications·Liu Chia-ChingLin Feng-Huei
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