LGI1 and autoimmune encephalitis: Autoimmune encephalitis accounts for 10–20% of cases of encephalitis (1), with anti-NMDAR encephalitis being the most common, accounting for about 80% of AE patients (6), followed by anti-LGI1 encephalitis and anti-γ-aminobutyric acid type B receptor (GABABR) Ab-related encephalitis.