OMG and myasthenia gravis: Documented NAEs encompass autoimmune encephalitis (AIE), aseptic meningitis (4), Guillain-Barré syndrome (GBS), chronic inflammatory demyelinating polyradiculoneuropathy (CIDP), myasthenia gravis (MG), and CNS demyelinating diseases such as neuromyelitis optica spectrum disorder (NMOSD) (5, 6), myelin oligodendrocyte glycoprotein antibody-associated disease (MOGAD) (7), and CNS vasculitis (8).