Background: The aim of our study was to estimate the frequency of autoimmune comorbidities, in NMOSD patients from the national Serbian NMOSD Registry.
Methods: Our study comprises 136 patients with NMOSD, diagnosed according to the NMOSD criteria 2015. At the time of the study, in the Registry were collected demographic and clinical data, including those related to the coexisting comorbidities and pathogenic autoantibodies.