MOG and transverse myelitis: Anti-myelin oligodendrocyte glycoprotein-IgG (MOG-IgG)-associated disorders (MOGAD) are immune-mediated inflammatory demyelinating disorders of the CNS that manifest as ON, transverse myelitis, or acute disseminated encephalomyelitis (ADEM); they are usually recurrent and can lead to functional impairment due to recurrence (5, 6).