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ABSTRACT: Objectives
To examine which composite measures are most sensitive to change when measuring psoriatic arthritis (PsA) disease activity, analyses compared the responsiveness of composite measures used in a 48-week randomized, controlled trial of MTX and etanercept in patients with PsA.Methods
The trial randomised 851 patients to receive weekly: MTX (20?mg/week), etanercept (50?mg/week) or MTX plus etanercept. Dichotomous composite measures examined included ACR 20/50/70 responses, minimal disease activity (MDA) and very low disease activity (VLDA). Continuous composite measures examined included Disease Activity Score (28 joints) using CRP (DAS28-CRP), Clinical Disease Activity Index (CDAI), Simplified Disease Activity Index (SDAI), Disease Activity for Psoriatic Arthritis (DAPSA) and Psoriatic Arthritis Disease Activity Score (PASDAS).Results
At week 24, etanercept-treated groups were significantly more effective than MTX monotherapy to achieve ACR 20 (primary end point) and MDA (key secondary end point). When examining score changes from baseline at week 24 across the five continuous composite measures, PASDAS demonstrated relatively greater changes in the etanercept-treated groups compared with MTX monotherapy and had the largest effect size and standardized response. Joint count changes drove overall score changes at week 24 from baseline in all the continuous composite measures except for PASDAS, which was driven by the Physician and Patient Global Assessments.Conclusion
PASDAS was the most sensitive continuous composite measure examined with results that mirrored the protocol-defined primary and key secondary outcomes. Composite measures with multiple domains, such as PASDAS, may better quantify change in PsA disease burden.Trail registration
https://ClinicalTrials.gov, number NCT02376790.
SUBMITTER: Coates LC
PROVIDER: S-EPMC7937022 | biostudies-literature | 2021 Mar
REPOSITORIES: biostudies-literature
Coates Laura C LC Merola Joseph F JF Mease Philip J PJ Ogdie Alexis A Gladman Dafna D DD Strand Vibeke V van Mens Leonieke J J LJJ Liu Lyrica L Yen Priscilla K PK Collier David H DH Kricorian Gregory G Chung James B JB Helliwell Philip S PS
Rheumatology (Oxford, England) 20210301 3
<h4>Objectives</h4>To examine which composite measures are most sensitive to change when measuring psoriatic arthritis (PsA) disease activity, analyses compared the responsiveness of composite measures used in a 48-week randomized, controlled trial of MTX and etanercept in patients with PsA.<h4>Methods</h4>The trial randomised 851 patients to receive weekly: MTX (20 mg/week), etanercept (50 mg/week) or MTX plus etanercept. Dichotomous composite measures examined included ACR 20/50/70 responses, ...[more]