The first report of HuD-positive encephalitis described a memory impairment as a relevant neuropsychiatric appearance (Tsukamato et al. 1993) (see Fig. 1 for autoimmune encephalitis associated with specific autoantibodies and its first psychiatric presentation; see Table 1 for psychiatric syndromes associated with autoantibodies). The gene discussed is ELAVL4; the disease is memory impairment.