However, non-paraneoplastic encephalitides also can manifest with parkinsonism: indeed, patients with LGI1, DPPX and GAD antibodies have been misdiagnosed with Parkinson’s disease, PSP or multisystem atrophy (Pittock et al., 2006; Tobin et al., 2014; Kurtis et al., 2015). This evidence concerns the gene LGI1 and Parkinson disease.