It has been reported in Anti-N-methyl-d-aspartate receptor (NMDAR) encephalitis (39), Anti-voltage-gated potassium channels (VGKC) encephalitis (40), Anti-glutamate receptor (GluR) encephalitis (34), Anti-contactin-associated protein-2 (CASPR2) encephalitis (41), Anti-glutamic acid decarboxylase 65 (GAD) encephalitis, Anti-Ma2 encephalitis and AbNAE (42). The gene discussed is CNTNAP2; the disease is viral encephalitis.