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This is a randomized, double-blind, multicentral clinical trial to investigate the efficacy of Recombinant Human Tumor Necrosis Factor-α Receptor Ⅱ IgG Fc fusion protein injection (Yisaipu®) in the treatment of peripheral enthesitis in active axial spondyloarthritis(SpA) patients.
Full description
Mardird sonographic enthesis index (MASEI) was one of the most wide used scoring systems for peripheral enthesitis and the only one based on OMERACT definition of enthesopathy by EULAR. The primary purpose is to assess the MASEI to discover the value of US in diagnosis and prognosis. The second prupose is to assess different maintaining treatment programme in SpA patients with improvement of MASEI. The trial will include 96 patients with stable NSAIDs therapy, and at the first stage they will receive 24-week full-dose of Yisaipu®. Then at the second stage the patients who achieve low disease activity (LDA, ASDAS<2.1) at 24th week will be randomizedly divided into three group: full-dose of Yisaipu® group, half-dose of Yisaipu® group and placebo group. And the blind stage will last for 24 weeks. Patients who complete the 48-week therapy or achieve disease-flare criteria during the blind stage would finish the study.
Enrollment
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Inclusion criteria
Fulfill the 2009 ASAS criteria for axial spondyloarthritis(SpA), and without bilateral more than grave 2 or unilateral more than grave 3 sacroilitis on X ray plan
Active disease phase of SpA, defined as BASDAI≥4 or ASDAS≥2.1
Inadequate response to NSAID≥4 week
Application of NSAID with stable dose for no less than 2 weeks
Stable dose of prenisone for at least four weeks at ≤10mg per day if used at screening, or stop use for at least 4 weeks
Stable dose of any DMARD for at least four weeks if used at screening, or stop use for at least 4 weeks
Stop and receiving washing out for at least 4 week if receiving Chinese traditional drug for AS, physical treatment, vaccication or IVIG
The lab exam should achieve the criteria as below:
Negative pregnacy test for female patients. And promise to carry out contraception during the trial and 6 weeks after the trial is ended
Sign the informed consent
Exclusion criteria
Primary purpose
Allocation
Interventional model
Masking
96 participants in 3 patient groups, including a placebo group
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Data sourced from clinicaltrials.gov
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