Abstract
While biological treatments for chronic plaque psoriasis should be administered continuously to maximize and maintain efficacy, interruptions in therapy may be necessary for a number of reasons. We reviewed the evidence from clinical trials on efficacy, safety and immunogenicity in clinical trials for approved biologic agents for chronic plaque psoriasis. A systematic search of three major medical databases was performed and a total of 35 articles were included into the analysis, including 13 controlled trials. Trials assessing continuous therapy against dosing as-needed therapy (including infliximab, etanercept and secukinumab) have demonstrated superior efficacy for continuous regimes. However, randomized withdrawal trials for etanercept, adalimumab, ixekizumab, brodalumab, guselkumab, risankizumab and tildrakizumab, showed no significant impact on skin clearance rates in patients who are interrupted once and then re-treated. With the possible exception of infliximab, temporary interruption in biologic therapy appears to be safe and most agents will regain efficacy after re-introduction. J Drugs Dermatol. 2021;20(10):1063-1071. doi:10.36849/JDD.5716.
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