Myelin Oligodendrocyte Glycoprotein Antibody Associated Central Nervous System Demyelinating Disease: A Tertiary Center Experience From Turkey

BACKGROUND To identify the clinical and radiological characteristics of adult patients with myelin oligodendrocyte glycoprotein antibody disease (MOG-AD) in a Turkish cohort. METHODS Clinical and radiological data were obtained retrospectively. Serological testing was done with fixed and live cell-based assays. RESULTS Optic neuritis was the most common presenting symptom, and neuromyelitis optica spectrum disorder (NMOSD) without aquaporin-4 antibody (AQP4-IgG) was the most common phenotype. Most patients had a relapsing course. Steroid dependency was common. Conus involvement was a frequent clinical and radiological feature. Radiological features such as long segment involvement and perineural optic nerve gadolinium enhancement were also typical in our cohort. One patient presented with encephalopathy and seizures, pointing out to the importance of testing of myelin oligodendrocyte antibody (MOG-IgG) in such patients as well. CONCLUSION Myelin oligodendrocyte glycoprotein antibody disease is a heterogeneous clinical entity with characteristic clinical and radiological features. Our single-center experience underlines prominent clinical and magnetic resonance imaging (MRI) features and provides our treatment experiences.