LGI1 and encephalitis: Specific HLA alleles and linked haplotypes have been strongly associated with other neurological neuroimmune diseases such as leucine‐rich glioma‐inactivated 1 (LGI1), contactin‐associated protein‐like 2 (CASPR2) and N‐methyl‐d‐aspartic acid receptor (NMDAR) antibody‐associated encephalitis.62, 63, 64