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Mixed response to tocilizumab for ankylosing spondylitis
  1. Joerg C Henes1,
  2. Marius Horger2,
  3. Ilhan Guenaydin1,
  4. Lothar Kanz1,
  5. Ina Koetter1
  1. 1Department of Internal Medicine II (Oncology, Hematology, Immunology, Rheumatology, Pulmonology), University Hospital Tuebingen, Tuebingen, Germany
  2. 2Department of Radiology, University Hospital Tuebingen, Tuebingen, Germany
  1. Correspondence to Dr Ina Koetter, University Hospital, Department of Internal Medicine II, Otfried-Mueller-Strasse 10, D-72076 Tuebingen, Germany; ina.koetter{at}med.uni-tuebingen.de

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Since the introduction of tumour necrosis factor (TNF) antagonists for the treatment of ankylosing spondylitis (AS) the majority of patients can be successfully treated. However, individual patients have persistent disease activity. We report on a 36-year-old male patient with HLA-B27-positive AS. No peripheral arthritis or extra-articular manifestation was documented. After insufficient response to standard treatment with non-steroidal anti-inflammatory drugs (NSAIDs), sulfasalazine, methotrexate and all three available TNF antagonists (infliximab, etanercept and adalimumab), the last of these even in an intensified dose of 40 mg weekly, a rescue treatment with the interleukin 6 (IL-6) antagonist tocilizumab (TCZ; Roche Pharma, Roche Pharma, Grenzach-Wyhlen, Germany) was initiated.

TCZ was administered intravenously with 8 mg/kg bodyweight every 4 weeks. Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) served as clinical response measure. For functional assessment the Bath Ankylosing Spondylitis Functional Index (BASFI) and the Bath Ankylosing Spondylitis Metrology Index (BASMI) were applied. For global …

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