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Previous Volume 349:2072-2073 November 20, 2003 Number 21 Next

	Since this article has no abstract, we have provided an extract of the first 100 words of the full text and any section headings.

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To the Editor: In their report on maintenance therapy for vasculitis associated with autoantibodies to neutrophil cytoplasmic antigens (ANCA) (July 3 issue),¹ Jayne et al. conclude that the level of exposure to cyclophosphamide can be safely reduced in patients with ANCA-associated vasculitis by switching to azathioprine once remission has been achieved. As the authors point out, and as is noted in the accompanying Perspective article by Langford,² follow-up was limited to 18 months. It was thought unlikely that extended follow-up would reveal significant differences in the rates of relapse. We present some data that may challenge this assumption.

From 1990 . . . [Full Text of this Article]

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