HLA-DQB1 and Cataplexy: Additionally several reports from other groups also indicate that HLA-DQB1*06:02 is associated with the pathogenesis of narcolepsy with cataplexy (Mignot et al., 2001; Juji et al., 1984; Marcadet et al., 1985); given these finding, we believe that the pathogenesis of EHS may partially differ from that of narcolepsy with cataplexy.