LGI1 and viral encephalitis: Among these cases, 97 patients had anti-NMDAR encephalitis (1 patient was positive for both anti-NMDAR and anti-CASPR2 antibodies), 5 patients had anti-CASPR2 encephalitis (1 patient was positive for both anti-CASPR2 and anti-GABABR antibodies), 2 patients had anti-GABABR encephalitis, and 1 patient had anti-LGI1 encephalitis (Figure 1).