Original articleVasculitides induced by TNFα antagonists: a study in 39 patients in France
Introduction
TNFα antagonists are effective in the treatment of rheumatoid arthritis (RA) [1], [2] and are used in an estimated 750,000 patients worldwide. Adverse effects include autoimmunity and infections. Reports of vasculitis in patients on TNFα antagonist therapy provide limited information on clinical features, outcomes, and histological findings. In addition, the fact that TNFα antagonists are used to treat diseases that can induce vasculitis is a major obstacle to causality assessments.
A permanent committee of the French Society for Rheumatology (the Club Rhumatismes et Inflammation) conducted a nationwide survey to collect data on systemic vasculitis developing during TNFα antagonist therapy for chronic inflammatory joint disease. The survey identified 39 cases.
Section snippets
Methods
Between December 2004 and January 2005, the committee collected retrospective data on histologically documented cases of vasculitis in patients on TNFα antagonist therapy for chronic inflammatory joint disease. Several methods were used to raise awareness of the survey among rheumatologists and internists throughout France: the survey was described at the committee meetings, in the committee's newsletter, and on the committee's website (http://www.CRI-net.com). A letter was sent three times at
Results
Thirty-nine cases were identified. Typical signs of vasculitis were consistently present, and we therefore included all the patients in the study, although histological documentation was missing for 12 patients. Table 1 reports the main characteristics. There were 32 women and seven men. The diagnoses and mean disease durations were as follows: RA, n = 34, 14.1 ± 8.7 years; juvenile idiopathic arthritis, n = 2, 26.2 years; ankylosing spondylitis, n = 2, 23 and 15 years, respectively; and psoriatic
Discussion
We report the results of a nationwide survey conducted in France to collect data on vasculitides in patients taking TNFα antagonists. Only 39 cases were identified, indicating that this is a rare event. Fewer than 50 cases have been reported in the literature [3], [4], [5], [6], [7], [8], [9], [10], [11]. The largest case-series includes 35 cases seen in Canada, 20 with etanercept and 15 with infliximab therapy [3]. Histological evidence of leukocytoclastic vasculitis was obtained in 17 (48%)
Acknowledgments
We thank the physicians who supplied information about patients with vasculitis during TNFα antagonist therapy: S. Steinfeld, J.M. Berthelot, Ch. Roux, P. Richette, D. Mulleman, D. Wendling, B. Moura, C. Gabay, O. Meyer, L. Euler Ziegler, Ch. Marcelli, C. Job Deslandres, C. Richez, X. Puechal, J. Sibilia, M. Dougados, J. Morel, and S. Guignard.
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- 1
On behalf of the CRI (Club Rhumatismes et Inflammation).