After screening, 52 patients with a history of COVID-19 were included, among whom 36 were considered to have COVID-19-related encephalitis (CSF SARS-CoV-2 negative in all cases), 6 had HSV-1 encephalitis, 2 had HHV-3 encephalitis, 2 had NMDAR-antibody encephalitis, 4 had LGI1-antibody encephalitis, and 2 had GABAB-antibody encephalitis. The gene discussed is LGI1; the disease is COVID-19.