The included cases comprised 107 patients with anti-NMDAR encephalitis, 86 with anti-LGI1 encephalitis, 22 with anti-GABABR encephalitis, and 22 with miscellaneous subtypes of AE; these being anti-CASPR2 encephalitis (9 cases), anti-AMPAR encephalitis (4), anti-MOG encephalitis (6), anti-GAD 65 encephalitis (2), and anti-amphiphysin encephalitis (1). The gene discussed is GAD1; the disease is viral encephalitis.