HLA-DPB1 and psoriatic arthritis: The case is also similar for multiple sclerosis[33] (DRB1-57Asp, 71Ala, 74Ala, 86Val; DPB1-65Leu), Sjögren’s syndrome (DRB1-47Tyr, 67Ile/Leu, 74Leu)[31], and psoriasis[34] (B-67Cys/Met, 9Asp, A-95Val; B-45Glu is associated with psoriatic arthritis).