CNTNAP2 and autoimmune encephalitis: These novel antibodies have given rise to various forms of autoimmune encephalitis, such as those caused by autoantibodies targeting GABAB-R, GABAA-R, AMPAR (alpha-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid receptor), and CASPR2 (contactin-associated protein 2), and the list of such antibodies continues to expand [1,2,3,4,5].