Anti-TNF agents are recommended for the treatment of Takayasu's patients who are unable to taper prednisone despite treatment with a nonbiologic immunosuppressive medication. Whether these biologic agents should be considered earlier in the treatment algorithm of these complicated patients remains an area of interest. Tocilizumab and rituximab may also be of benefit in refractory patients. Prospective randomized controlled trials are needed to confirm these findings.
Aortitis continues to be a conundrum; however, good results are achievable with surgery. Intervention should be based on a clearer understanding of the histologic pattern and extent of disease, which helps in subsequent targeted disease management.
Blood vessels may not be sterile. Future studies of microbes in vessel health and disease may provide important insights into disease pathogenesis and suggest new therapies for diseases now considered to be idiopathic and refractory.
Objective In 2015, the Canadian Vasculitis Research Network (CanVasc) created recommendations for the management of antineutrophil cytoplasm antibody (ANCA)-associated vasculitides (AAV) in Canada. The current update aimed to revise existing recommendations and create additional recommendations, as needed, based on a review of new available evidence. Methods A needs assessment survey of CanVasc members informed questions for an updated systematic literature review (publications spanning May 2014-September 2019) using Medline, Embase, and Cochrane. New and revised recommendations were developed and categorized according to the level of evidence and strength of each recommendation. The CanVasc working group used a two-step modified Delphi procedure to reach >80% consensus on the inclusion, wording and grading of each new and revised recommendation. Results Eleven new and 16 revised recommendations were created, and 12 original (2015) recommendations were retained. New and revised recommendations are discussed in detail within this document. Five original recommendations were removed, of which 4 were incorporated into the explanatory text. The supplementary appendix for practical use was revised to reflect the updated recommendations. Conclusion The 2020 updated recommendations provide rheumatologists, nephrologists, and other specialists caring for patients with AAV in Canada with new management guidance, based on current evidence and consensus from Canadian experts.
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