Infliximab Use in Wegener's Granulomatosis
Rituximab Use in Wegener's Granulomatosis
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Purpose of Review: Due to the well known toxicities of cyclophosphamide, substantial interest exists in finding other therapies to treat primary
systemic vasculitis. Biologic agents have been proposed as an alternative to cyclophosphamide for these disorders because
of their recent success in treating other rheumatic diseases. This article reviews the current state-of-the-art therapy with
regards to the use of biologic agents as treatments for systemic vasculitis.
Recent Findings: The greatest amount of experience with these agents for the treatment of systemic vasculitis is with antitumor necrosis factor
agents, pooled intravenous immunoglobulin, and anti-B-cell therapies such as rituximab. Intravenous immunoglobulin is already
a standard therapy for Kawasaki's disease, but should also be considered for the treatment of vasculitis associated with antineutrophil
cytoplasmic antibodies when standard therapies are either ineffective or contraindicated. Early experience with tumor necrosis
factor inhibitors indicates that they may be effective for the treatment of Takayasu's arteritis, but their role in the treatment
of other forms of vasculitis remains controversial. Early experience with rituximab for the treatment of several forms of
vasculitis has been quite promising, but must be confirmed by ongoing randomized clinical trials.
Summary: Biologic agents represent the next evolution in treatment for the primary systemic vasculitides. Greater understanding of
these diseases has allowed us to move further away from nonspecific, highly toxic therapies toward a more directed approach.
As our experience with these agents increases, they will likely form the keystone of treatment in the near future.
Cytotoxic agents are the cornerstone of treatment for many forms of primary systemic vasculitis. Drugs such as cyclophosphamide have vastly improved the previously dismal prognosis associated with many of these diseases. Due to the toxicities associated with cyclophosphamide, however, there has been substantial interest in finding alternate agents for treatment of these disorders. With the recent success of biologic agents for the treatment of many autoimmune disorders, there has been great interest in using these agents to treat systemic vasculitis.