LGI1 and encephalitis: Autoimmune causes of encephalitis are associated with a variety of autoantibodies against the neuronal cell surface or synapse with the common being the anti-N-methyl-D-aspartic acid (anti-NDMA) receptor antibody and the anti-leucine rich, glioma-inactivated 1 [anti-LGI1; voltage-gated potassium channel (VGKC) antibody] (124).