<prompt> HLA B27 is NOT seen inAnkylosing spondylitisReiters syndromeRheumatoid ahritisPsoriatic ahritis  <response>: Seronegative spondyloahropathies PAIR Psoriatic ahritis Ankylosing spondylitis Inflammatory bowel disease Reactive ahritis Reiters syndrome Features Absence of serum autoantibodies Associated with HLA B27 Onset before 40 years Presence of uveitis, spinelarge joint peripheral ahritis 