CNTNAP2 and aceruloplasminemia: Figures suggested that patients with AMPAR-Ab had the highest occurrence of cerebellar ataxia during the course of the disease (1/4, 25%), followed by CASPR2-Ab (2/12, 16.7%), NMDAR-Ab (9/108, 8.3%), and LGI1-Ab (2/52, 3.8%).