title: Ankylosing spondylitis with selective IgA deficiency and a circulating anticoagulant.
abstract: A patient with ankylosing spondylitis was found to have selective IgA deficiency and a non-heparin, immediate-acting antithrombin (antithrombin V). T cells were decreased, and serum IgG was increased. In vitro synthesis of IgG by peripheral blood lymphocytes was very high. This association of ankylosing spondylitis with the T cell and protein abnormalities is probably fortuitous but does demonstrate that severe spondylitis may evolve in the absence of IgA.
mesh_terms: D000991:Antithrombins / Q000032:analysis; D001777:Blood Coagulation; D004406:Dysgammaglobulinemia / Q000097:blood / Q000150:complications*; D006680:HLA Antigens / Q000032:analysis; D006801:Humans; D007070:Immunoglobulin A / Q000032:analysis*; D007074:Immunoglobulin G / Q000032:analysis; D007075:Immunoglobulin M / Q000032:analysis; D008213:Lymphocyte Activation; D008214:Lymphocytes / Q000276:immunology; D008297:Male; D008875:Middle Aged; D013167:Spondylitis, Ankylosing / Q000097:blood / Q000150:complications* / Q000276:immunology
chemical_list: D000991:Antithrombins; D006680:HLA Antigens; D007070:Immunoglobulin A; D007074:Immunoglobulin G; D007075:Immunoglobulin M