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ISSN: 1734-1922
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3/2019
vol. 15
 
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Rheumatology
abstract:
Clinical research

Full dose, half dose, or discontinuation of etanercept biosimilar in early axial spondyloarthritis patients: a real-world study in China

Kun-Peng Li, Jing-Yu Jin, Jin-Shui Yang, Yan Li, Wei Zhao, Gui Luo, Jian Zhu, Jiang-Lin Zhang, Feng Huang

Arch Med Sci 2019; 15 (3): 700–705
Online publish date: 2018/06/01
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Introduction
To investigate the effect of dose maintenance, reduction, or discontinuation of the etanercept biosimilar Yisaipu (YSP) on early axial spondyloarthritis (axSpA) patients in remission with YSP 50 mg once weekly (QW).

Material and methods
Patients were enrolled in three groups: full dose (YSP50), half dose (YSP25), and discontinuation (YSP0). Patients were assessed by the same rheumatologist every 8 weeks for 48 weeks. The primary endpoint was the proportion of non-failure patients in each group. If a flare occurred during the study period, the patient resumed YSP 50 mg QW or was switched to another tumor necrosis factor inhibitor.

Results
A total of 144 patients were included and each group included 48 patients. The proportion of non-failure patients was significantly greater in the YSP50 group than in the YSP0 group at 48 weeks (91.7% vs. 72.9%, p = 0.032). The difference in the other two comparisons was not statistically significant (YSP50 vs. YSP25 group, p = 0.522; YSP25 vs. YSP0 group, p = 0.132). The median time to flare did not differ significantly between the three groups (p > 0.05). Most patients who flared regained remission rapidly after resuming YSP 50 mg QW or starting adalimumab 40 mg every other week.

Conclusions
For patients with early axSpA in remission on YSP for more than 12 weeks, continuation of YSP at full dose was superior to discontinuation of YSP, but not superior to halving the dose.

keywords:

axial spondyloarthritis, TNF blockers, etanercept biosimilar, dose reduction, remission

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