Late-onset axSpA (LOS) is more likely to have peripheral arthritis. but less HLA-B27 & +FHx of AS/SpA. Portugese study of 2165 axSpA pts. 273 LOS (Sx onset >45 yrs; mean 51yrs; 55% men) had less B27 (51% vs 65%), +FHx (8% vs 14%), inflam LBP (81% vs 88%), Uveitis (13% vs 20%)… https://t.co/DgRUt1ejxT https://t.co/dGX2bfKhnK