GFAP and encephalitis: Subtypes included anti-LGI encephalitis (n = 15, 28%), anti-NMDAR encephalitis (n = 15, 28%), anti-GFAP encephalitis (n = 1, 2%), possible antibody-negative autoimmune encephalitis (n = 12, 22%), probable seronegative autoimmune encephalitis (n = 3, 6%), seronegative limbic encephalitis (n = 6, 11%), and encephalitis associated with onconeuronal antibodies (n = 2, 4%, anti-Hu and anti-Yo).