Among 23 patients with suspected encephalitis/encephalopathy and SARS-CoV-2-IgG positivity, 3 were diagnosed with encephalopathy, 1 with NORSE, 5 fulfilled diagnostic criteria for possible autoimmune encephalitis (in one case with anti-titin antibodies in both serum and CSF), and two patients fulfilled the diagnostic criteria for seronegative limbic encephalitis. This evidence concerns the gene TTN and encephalitis.