Glial fibrillary acidic protein-specific IgG identifies a distinctive, corticosteroid-responsive, sometimes paraneoplastic autoimmune meningoencephalomyelitis. It has a lethal canine equivalent: necrotizing meningoencephalitis. Expression of GFAP has been reported in some of the tumor types identified in paraneoplastic cases. Glial fibrillary acidic protein peptide-specific cytotoxic CD8+ T cells are implicated as effectors in a transgenic mouse model of autoimmune GFAP meningoencephalitis.
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Fang et al. (2016) studied this question.
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