Autoimmune encephalitis was also ruled out by the clinical and radiological findings, the typical topography of the lesions, and the negative results of the relevant antibodies, that is, anti-NMDA receptor, anti-AMPA1 receptor, anti-AMPA2 receptor, anti-CASPR2, anti-LGI1, and anti-GABAB receptor antibodies in serum and CSF. The gene discussed is CNTNAP2; the disease is autoimmune encephalitis.