Negative autoimmune encephalitis panel antibodies, including NMDA receptor, AMPA receptors 1 and 2, LGI1, anti-Ma2/Ta, anti-Hu, anti-Ri, anti-Yo, and anti-Zic4, ruled out paraneoplastic or autoimmune encephalitic syndromes. This evidence concerns the gene LGI1 and autoimmune encephalitis.