Using DRB1*03:01 as the model allele for this study, we sought to map the antigenic epitopes of the five most dominant antigens associated with SjS, which include Ro52, Ro60, La, muscarinic receptor type III (M3R), and α-fodrin as indicated in Table 3. Here, HLA-DRB1 is linked to Schwartz-Jampel syndrome.