Anti-MOG-associated demyelinating disorders: two sides of the same coin

Anti-myelin oligodendrocyte glycoprotein antibody-associated disorders (MOGAD) are new emerging diseases with heterogeneous course, treatment, response, and prognosis. We herein present 2 cases with antibodies to MOG, one with a cerebellar/brainstem monophasic syndrome which partially improved after treatment, and the other with an optic neuritis onset then relapsed with cortical encephalitis and presented a subsequent complete recovery. We further discuss elements possibly associated with disease heterogeneity and influencing treatment choices. MOGAD is an extremely variable disease which can relapse and accumulate disability over time. An early diagnosis and correct timely treatment is fundamental to improve clinical outcome.