Among the nine patients with abnormal movements, five had chorea/dyskinesia (all had anti-NMDAr with one patient also presented with catatonia), two had faciobrachial dystonic seizures (both had anti-LGI1), one had stiff-person syndrome (anti-AMPAr-2), and one had myoclonus (anti-GABAr). This evidence concerns the gene LGI1 and stiff-person syndrome.