Performance of the Ankylosing Spondylitis Disease Activity Score based on a quick quantitative C-reactive protein assay in patients with axial spondyloarthritis - 10/01/20
, Burkhard Muche a, Laura Spiller a, Valeria Rios Rodriguez a, Judith Rademacher a, Anne-Katrin Weber a, Susanne Lüders a, Mikhail Protopopov a, Imke Redeker a, Inge Spiller a, Joachim Sieper a, Denis Poddubnyy a, bBienvenue sur EM-consulte, la référence des professionnels de santé.
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Abstract |
Objectives |
To evaluate the performance of the Ankylosing Spondylitis Disease Activity Score based on a validated quick quantitative C-reactive protein assay (ASDAS-qCRP) as compared to ASDAS based on a routine lab CRP assay (ASDAS-CRP) and ASDAS based on erythrocyte sedimentation rate (ASDAS-ESR).
Methods |
Disease activity assessment was performed in 50 patients with axial spondyloarthritis (axSpA). Routine lab CRP was measured in the central lab while the quantitative quick-CRP assay and ESR measurements were performed locally. ASDAS-CRP, ASDAS-qCRP and ASDAS-ESR were subsequently calculated.
Results |
The mean (±SD) serum level of the routine lab CRP (6.2±8.3mg/l) was lower than of the quick-CRP (7.4±8.4mg/l) (P<0.05). Whereat, there was no significant difference in the mean values of ASDAS-CRP and ASDAS-qCRP in axSpA patients (2.70±0.94 and 2.74±0.96, respectively, P=0.069), while the ASDAS-ESR (2.85±1.0) was significantly higher than ASDAS-CRP (P=0.036) and numerically higher than ASDAS-qCRP (P=0.125). In 47 of the 50 cases of axSpA (94%), patients were assigned to the same disease activity category according to ASDAS-CRP and ASDAS-qCRP.
Conclusions |
ASDAS-qCRP performed similarly well compared to ASDAS-CRP with the absolute agreement on the disease activity category according to the ASDAS of 94%. ASDAS-qCRP is, therefore, feasible for an immediate decision-making in clinical practice and trials aimed at treating to target.
Le texte complet de cet article est disponible en PDF.Keywords : Spondyloarthritis, Disease activity, Ankylosing spondylitis, ASDAS, Treat-to-target
Plan
Vol 87 - N° 1
P. 69-73 - janvier 2020 Retour au numéro
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