MUC1 and narcolepsy: This last method, which has to our knowledge only been used by a few investigators, such as for the detection of MUC1-Tn antibodies [55], or N-methyl-D-aspartate receptor (NMDAR) or dopamine-2 receptor (D2P) autoantibodies [54], was found to be more sensitive (see positive controls in Fig 3 and S1 Fig) and yielded a fewer positives in both narcolepsy patient and control subjects (Fig 3, Table 3, S1 Fig, S2 Table).