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. 2018 Dec 27;13(12):e0209379.
doi: 10.1371/journal.pone.0209379. eCollection 2018.

Validation of Multiplex Serology Detecting Human Herpesviruses 1-5

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Free PMC article

Validation of Multiplex Serology Detecting Human Herpesviruses 1-5

Nicole Brenner et al. PLoS One. .
Free PMC article

Abstract

Human herpesviruses (HHV) cause a variety of clinically relevant conditions upon primary infection of typically young and immunocompetent hosts. Both primary infection and reactivation after latency can lead to more severe disease, such as encephalitis, congenital defects and cancer. Infections with HHV are also associated with cardiovascular and neurodegenerative disease. However, most of the associations are based on retrospective case-control analyses and well-powered prospective cohort studies are needed for assessing temporality and causality. To enable comprehensive investigations of HHV-related disease etiology in large prospective population-based cohort studies, we developed HHV Multiplex Serology. This methodology represents a low-cost, high-throughput technology that allows simultaneous measurement of specific antibodies against five HHV species: Herpes simplex viruses 1 and 2, Varicella zoster virus, Epstein-Barr virus, and Cytomegalovirus. The newly developed HHV species-specific ('Monoplex') assays were validated against established gold-standard reference assays. The specificity and sensitivity of the HHV species-specific Monoplex Serology assays ranged from 92.3% to 100.0% (median 97.4%) and 91.8% to 98.7% (median 96.6%), respectively. Concordance with reference assays was very high with kappa values ranging from 0.86 to 0.96 (median kappa 0.93). Multiplexing the Monoplex Serology assays resulted in no loss of performance and allows simultaneous detection of antibodies against the 5 HHV species in a high-throughput manner.

Conflict of interest statement

The authors have declared that no competing interests exist.

Figures

Fig 1
Fig 1. Comparison of quantitative antibody measurements (MFI) with reference serostatus in HHV species-specific Monoplex Serology.
I-Vb indicate corresponding reference panels. gE/gI: co-loading of antigens gE and gI onto one bead set red lines: optimized cut-offs for single antigen performance; cut-offs were determined by optimizing specificity and sensitivity. MFI: Median Fluorescence Intensity.
Fig 2
Fig 2. Comparison of statistical performance of HHV species-specific assays in monoplex (blue) and multiplex (orange) format.
Performance is shown for overall seropositivity (EBV, CMV) and single antigens for HSV-1 (gG), HSV-2 (mgGu) and VZV (gE). I-Vb indicate corresponding reference panels. Cohen’s kappa statistics are shown in percent to improve visualization. For direct comparison of Monoplex and Multiplex Serology performance on the corresponding reference panel, ICCs were calculated showing good to excellent reliability (ICCHSV1: 0.91 (95% CI 0.88–0.93), ICCHSV2: 0.93 (95% CI 0.89–0.95), ICCVZV: 0.93 (95% CI 0.91–0.95), ICCEBV: 0.87 (95% CI 0.84–0.90), ICCCMV RPVa: 0.82 (95% CI 0.77–0.86), ICCCMV RPVb: 0.99 (95%CI 0.99–1.00)). kappa: Cohen’s kappa. ICC: Intraclass correlation coefficient. CI: confidence interval.

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