Correlation between Amerindian ancestry and neuromyelitis optica spectrum disorders (NMSOD) among patients in Midwestern Brazil.

Background: Neuromyelitis optica spectrum disorder (NMOSD) is the second most frequently demyelinating, autoimmune, and inflammatory Central Nervous System (CNS) disease, and its prevalence varies greatly according to geography and ethnicity.

Objective: To determine the prevalence and phenotype of NMOSD at a reference center for demyelinating diseases in Goiás State.

Methods: This was a cross-sectional study, approved under CAAE number 8380.