NMDAR (AE), 1 (13)  NMDAR (isolated ataxia), 1 (13)  LGI1, 1 (13)  DPPX, 1 (13)  GABA-aR/GAD65, 1 (13)  GAD65, 1 (13)  Ab negative AE, 2 (26). This evidence concerns the gene GAD2 and cerebellar ataxia.