Volpe, Giulio; Jurkute, Neringa; Girafa, Gabriela; Zimmermann, Hanna G; Motamedi, Seyedamirhosein; Bereuter, Charlotte; Pandit, Lekha; ... Oertel, Frederike C; + view all Volpe, Giulio; Jurkute, Neringa; Girafa, Gabriela; Zimmermann, Hanna G; Motamedi, Seyedamirhosein; Bereuter, Charlotte; Pandit, Lekha; D'Cunha, Anitha; Yeaman, Michael R; Smith, Terry J; Cook, Lawrence J; Brandt, Alexander U; Paul, Friedemann; Petzold, Axel; Oertel, Frederike C; - view fewer (2024) Diagnostic Value of Inter-Eye Difference Metrics on OCT for Myelin Oligodendrocyte Glycoprotein Antibody-Associated Optic Neuritis. Neurology: Neuroimmunology & Neuroinflammation , 11 (6) , Article e200291. 10.1212/NXI.0000000000200291.

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Abstract

Background and Objectives: The 2022 International Consortium for Optic Neuritis diagnostic criteria for optic neuritis (ON) include optical coherence tomography (OCT). The diagnostic value of intereye difference (IED) metrics is high for ON in patients with multiple sclerosis and aquaporin-4 antibody seropositive neuromyelitis optica spectrum disorders, but unknown in myelin oligodendrocyte glycoprotein antibody–associated ON (MOG-ON). // Methods: A multicenter validation study was conducted on the published IED cutoff values (>4% or >4 μm in the macular ganglion cell and inner plexiform layer [mGCIP] or >5% or >5 μm in the peripapillary retinal nerve fiber layer [pRNFL]) in individuals with MOG-ON and age-matched and sex-matched healthy controls (HCs). Structural data were acquired with Spectralis spectral-domain OCT >6 months after ON. We calculated sensitivity, specificity, and receiver operating characteristics for both intereye percentage (IEPD) and absolute difference (IEAD). // Results: A total of 66 individuals were included (MOG-ON N = 33; HCs N = 33). ON was unilateral in 20 and bilateral in 13 subjects. In the pooled analysis, the mGCIP IEPD was most sensitive (92%), followed by the mGCIP IEAD (88%) and pRNFL (84%). The same pattern was found for the specificity (mGCIP IEPD 82%, IEAD 82%; pRNFL IEPD 82%, IEAD 79%). In subgroup analyses, the diagnostic sensitivity was higher in subjects with unilateral ON (>99% for all metrics) compared with bilateral ON (61%–78%). // Discussion: In individuals with MOG-ON, the diagnostic accuracy of OCT-based IED metrics for ON was high, especially of mGCIP IEPD. // Classification of Evidence: This study provides Class III evidence that the intereye difference on OCT can distinguish between those with MOG and normal controls.

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