MOG and myelitis: So far, twoindependent international panels have published recommendations on who should betested for MOG-IgG and the timing of the testing(16,17).Basically, these recommendations indicate that patients with bilateral and/orrecurrent extensive ON and myelitis, or ON associated with optic disc swellingtogether with specific radiological and laboratorial characteristics should undergoprompt testing for anti-MOG, and if the result is positive, a diagnosis of MOGADshould be considered.