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Analysis of response to infliximab in ankylosing spondylitis according to the axial and/or peripheral involvement: autoantibodies and drop outs are more frequent in the peripheral subset
  1. Marco Maria Lizzio,
  2. Giusy Peluso,
  3. Angelo Zoli,
  4. Elisa Gremese,
  5. Barbara Tolusso,
  6. GianFranco Ferraccioli
  1. Division of Rheumatology, Catholic University, Rome, Italy
  1. Correspondence to:
    Dr G F Ferraccioli
    Department of Rheumatology, UCSC School of Medicine, Catholic University of Rome, via Moscati 31, 00168 Rome, Italy; gf.ferraccioli{at}

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Infliximab, a monoclonal antibody that targets membrane and soluble tumour necrosis factor (TNF)α, has recently been successfully used to treat patients with active ankylosing spondylitis.1,2 No distinction in terms of axial or peripheral involvement has ever been considered in evaluating the clinical response and autoantibody induction secondary to the infliximab regimen in patients with ankylosing spondylitis.

In this study, we evaluated the effectiveness and tolerability of infliximab in 23 patients with ankylosing spondylitis with only axial involvement (ASaxial) and in 24 patients with ankylosing spondylitis with axial and peripheral arthritis (ASperipheral) (Bath Ankylosis Spondylitis Disease Activity Index (BASDAI) ⩾4),3 and the occurrence of autoantibody induction4–7 in the two different subsets and their clinical relevance in terms of outcome. All patients received infliximab (5 mg/kg) according to …

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  • Competing interests: None declared.