The following search terms were used: “COVID-19/SARS-CoV-2” AND “ADEM-like/MOGAD/MOG-associated disease/encephalitis/encephalopathy/case” AND “MOG/myelin oligodendrocyte glycoprotein.” The reference list of these articles was also searched and evaluated for additional reports related to our research, finding 2 more articles. The gene discussed is MOG; the disease is viral encephalitis.