HLA-B27 in PsA: assoc w/ earlier onset, axial Dz, enthesitis, systemic inflammation. Study of 333 CASPAR PsA pts - 12% HLA-B27 positive--earlier onset (43 v 49), axial (46 v 24%), enthesitis (33 v 18%). No signif differences in sex, dactylitis, uveitis, Rx responses, https://t.co/ALP6AnygSf