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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Clin+Exp+Rheumatol
2015 ; 33
(2 Suppl 89
): S-77-83
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Comparability of patients with ANCA-associated vasculitis enrolled in clinical
trials or in observational cohorts
#MMPMID26016754
Pagnoux C
; Carette S
; Khalidi NA
; Walsh M
; Hiemstra TF
; Cuthbertson D
; Langford C
; Hoffman G
; Koening CL
; Monach PA
; Moreland L
; Mouthon L
; Seo P
; Specks U
; Ytterberg S
; Westman K
; Hoglund P
; Harper L
; Flossman O
; Luqmani R
; Savage CO
; Rasmussen N
; de Groot K
; Tesar V
; Jayne D
; Merkel PA
; Guillevin L
Clin Exp Rheumatol
2015[Mar]; 33
(2 Suppl 89
): S-77-83
PMID26016754
show ga
OBJECTIVES: To analyse the differences between patients with granulomatosis with
polyangiitis (GPA) or microscopic polyangiitis (MPA) entered into randomised
clinical trials (RCTs) and those followed in large observational cohorts.
METHODS: The main characteristics and outcomes of patients with generalised
and/or severe GPA or MPA with a five-factor score ? 1 enrolled in the French
Vasculitis Study Group (FVSG) or the US-Canadian-based Vasculitis Clinical
Research Consortium cohorts were compared to those enrolled in one of 2 FVSG
clinical RCTs (WEG91, WEGENT) or 3 European Vasculitis Society clinical trials
(CYCLOPS, CYCAZAREM, IMPROVE). RESULTS: 657 patients (65.3% with GPA) in RCTs
were compared to 437 in cohorts (90.6% with GPA). RCT patients were older at
diagnosis than the cohort patients (56.6 ± 13.9 vs. 46.8 ± 17.3 years), had
higher Birmingham vasculitis activity score (19.5 ± 9.1 vs. 16.9 ± 7.4), and more
frequent kidney disease (84.0% vs. 54.9%) but fewer ear, nose, and throat
symptoms (56.8% vs. 72.2%). At 56 months post-diagnosis, mortality and relapse
rates, adjusted for age and renal function, were higher for patients with GPA in
RCTs vs. cohorts (10.7% vs. 2.5% [p=0.001] and 22.5% vs. 15.6% [p=0.03],
respectively) but similar for patients with MPA (6.2% vs. 6.6% [p=0.92] and 16.6%
vs. 10.1% [p=0.39], respectively). CONCLUSIONS: Patients with GPA or MPA in RCTs
and those in observational cohorts show important differences that should be
remembered when interpreting results based on these study populations.