CNTNAP2 and Encephalopathy: Encephalopathy panel, including anti-leucine-rich glioma-inactivated 1 antibody (anti-LGI-1), contactin-associated protein-like 2 (CASPR2), N-methyl-D-aspartate receptor (NMDAR), gamma-aminobutyric acid receptors A/B (GABA-A/B), and α-amino-3-hydroxy-5-methyl-4-isoxazolepropionic acid 1/2 receptors (AMPA-1/2), and para-neoplastic antibodies (anti-Hu, Yo, Ri, Ma) were sent as well.