MOG-IgG can lead to ON, myelitis, and ADEM and are currently associated with anti-n-methyl-d-aspartate (NMADA) antibody encephalitis, teratoma, COVID-19, etc. (Fujimori et al., 2021; Peters et al., 2021; Wildemann et al., 2021). The gene discussed is MOG; the disease is myelitis.