Autoimmune encephalitis antibodies against the voltage-gated potassium channel associated LGI-1 protein with a serum titer of 1:40 and antineuronal antibodies against the GABA-synthesizing enzyme GAD with a serum titer of 1:1600 were detected (Fig. 1A,C), leading to the diagnosis of antibody-mediated immune encephalitis. This evidence concerns the gene GAD1 and autoimmune encephalitis.