HLA B27 negative ankylosing spondylitis--a rare condition.
New strict criteria have recently been suggested for the definition of HLA B27 negative ankylosing spondylitis, which show it to be less common than was previously thought. We report two cases which conform to the new criteria, together with details of family studies. The use of these criteria in future studies of B27 negative disease is discussed.
D000328:Adult; D006680:HLA Antigens / Q000276:immunology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010375:Pedigree; D013167:Spondylitis, Ankylosing / Q000235:genetics / Q000276:immunology*
D006680:HLA Antigens