AIE represents a relatively novel set of syndromes, and as such, some of these syndromes were initially reported and defined during the time‐period examined in our study, while several others gained from recent developments of improved diagnostic technics; for example, the exact antigen for anti‐LGI1 was discovered in 201017(p1),18 with CBA becoming prevalent during the following several years, the syndrome of anti‐GFAP meningoencephalitis was initially reported merely in 201619, and CBAs for MOG antibodies were optimized during the second half of the decade in question.20 This evidence concerns the gene GFAP and meningoencephalitis.