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  • Title: Leukocytoclastic vasculitis associated with tumor necrosis factor-alpha blocking agents.
    Author: Mohan N, Edwards ET, Cupps TR, Slifman N, Lee JH, Siegel JN, Braun MM.
    Journal: J Rheumatol; 2004 Oct; 31(10):1955-8. PubMed ID: 15468359.
    Abstract:
    OBJECTIVE: To describe the clinical features of leukocytoclastic vasculitis (LCV) associated with the use of tumor necrosis factor-alpha (TNF-alpha) blockers. METHODS: The Adverse Events Reporting System (AERS) of the US Food and Drug Administration (FDA) was queried for reports of patients who developed LCV during or after starting etanercept or infliximab from date of approval of each agent through September 6, 2002. RESULTS: Thirty-five cases of LCV were identified, 20 following etanercept administration and 15 following infliximab administration. Seventeen of the 35 (48.5%) were biopsy-proven cases and the others had skin lesions that were clinically typical for LCV. Twenty-two of 35 (62.8%) patients had complete or marked improvement of skin lesions upon stopping the TNF-alpha blocker. Three patients who had received etanercept had continuing lesions despite discontinuation of the drug; one of these patients improved when switched to infliximab. One patient who received infliximab was reported to have continuing lesions despite discontinuation of the drug and treatment with prednisone and antihistamines. Six patients experienced a positive rechallenge (recurrence of LCV on restarting therapy with a TNF-alpha blocker) and 3 patients a negative rechallenge phenomenon. LCV lesions improved in patients despite continuing use of concomitant medications reportedly associated with LCV. CONCLUSION: Therapy with TNF-alpha blocking agents may be associated with the development of LCV. Skin lesions improved on discontinuation of anti-TNF-alpha therapy in most patients. Other causes of LCV should be excluded, and evaluation for systemic involvement with appropriate investigations is recommended.
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