GFAP and myelitis: These include spinal cord sarcoidosis (7, 8), paraneoplastic myelopathies (9), myelitis associated with glial fibrillary acidic protein (GFAP)-IgG (10), and myelitis associated to systemic immune-mediated disorders (e.g., Behcet, systemic lupus erythematosus) (11, 12).