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• W3003848499 abstract "Human autoantibodies targeting myelin oligodendrocyte glycoprotein (MOG Ab) have become a useful clinical biomarker for the diagnosis of a spectrum of inflammatory demyelinating disorders. Live cell-based assays which detect MOG Ab against conformational MOG are currently the gold standard. Flow cytometry, in which serum binding to MOG-expressing cells and control cells are quantitively evaluated, is a widely used observer-independent, precise, and reliable detection method. However, there is currently no consensus on data analysis, for example seropositive thresholds have been reported using varying standard deviations above a control cohort. Herein, we used a large cohort of 482 sera including samples from patients with monophasic or relapsing demyelination phenotypes consistent with MOG antibody-associated demyelination, as well as healthy controls, and other neurological diseases and applied a series of published analyses involving a background subtraction (delta) or a division (ratio). Loss of seropositivity and reduced detection sensitivity were observed when MOG ratio analyses, or when 10 SD or an arbitrary number was used to establish the threshold. Background binding and MOG ratio value were negatively correlated, in which patients seronegative by MOG ratio had high non-specific binding, a characteristic of serum which must be acknowledged. Most MOG Ab serostatuses were similar across analyses when optimal thresholds obtained by ROC analyses were used, demonstrating the robust nature and high discriminatory power of flow cytometry cell-based assays. With increased demand to identify MOG Ab-positive patients, a consensus on analysis is vital to improve patient diagnosis and for cross-study comparisons to ultimately define MOG Ab-associated disorders." @default.
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• W3003848499 date "2020-02-06" @default.
• W3003848499 modified "2023-09-29" @default.
• W3003848499 title "Effects of the Positive Threshold and Data Analysis on Human MOG Antibody Detection by Live Flow Cytometry" @default.
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• W3003848499 doi "https://doi.org/10.3389/fimmu.2020.00119" @default.
• W3003848499 hasPubMedCentralId "https://www.ncbi.nlm.nih.gov/pmc/articles/7016080" @default.
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