Westwell–Roper C, et al. – The authors planned this international survey in order to evaluate treatment practices, uptake of existing clinical assessment tools, and interest in pediatric treatment protocols among rheumatologists caring for children with granulomatosis with polyangiitis (GPA) and microscopic polyangiitis (MPA). They provided a rationale for developing pediatric–specific consensus treatment guidelines for GPA/MPA. The pediatric rheumatologist uptake of existing clinical tools was limited. However, guideline uptake could be enhanced if outcomes of consensus–derived treatment options were determined within the framework of an international registry.