Clinical data were collected from both groups and statistical methods were employed to analyze the differences between the two groups.<h4>Results</h4>This study enrolled 48 patients (<i>n</i> = 48) with anti-NMDAR encephalitis, comprising eight cases (<i>n</i> = 8, 16.67%) in the MOG-Ab (+) group and 40 cases (<i>n</i> = 40, 83.33%) in the MOG-Ab (-) group. Here, MOG is linked to viral encephalitis.