AI Article Synopsis

  • Infliximab (IFX) biosimilars are used to treat inflammatory bowel disease (IBD) and are generally cheaper than original IFX, but concerns about switching between the two products persist.
  • A systematic review of studies conducted between 2012 and 2022 found that switching from originator to biosimilar IFX did not significantly affect treatment effectiveness or safety, with reported adverse events being consistent with known profiles.
  • Most studies concluded that outcomes for clinical effectiveness, patient-reported results, and safety after switching were comparable to those of the original IFX, although there is limited data on patients who switch multiple times.

Article Abstract

Introduction: Infliximab (IFX) biosimilars are available to treat inflammatory bowel disease (IBD), offering cost reductions versus originator IFX in some jurisdictions. However, concerns remain regarding the efficacy and safety of originator-to-biosimilar switching. This systematic literature review evaluated safety and effectiveness of switching between IFX products in patients with IBD, including multiple switchers.

Methods: Embase, PubMed, Cochrane Database of Systematic Reviews, Cochrane Central Register of Controlled Trials were searched to capture studies (2012-2022) including patients with IBD who switched between approved IFX products. Effectiveness outcomes: disease activity; disease severity; response to treatment; patient-reported outcomes (PROs). Safety outcomes: incidence and rate of adverse events (AEs); discontinuations due to AEs, failure rate; hospitalizations; surgeries. Immunogenicity outcomes (n, %): anti-drug antibodies; patients receiving concomitant immunomodulatory medication.

Results: Data from 85 publications (81 observational, two randomized controlled trials) were included. Clinical effectiveness outcomes were consistent with the known profile of originator IFX with no difference after switching. There were no unexpected/serious AEs after switching, and rates of AEs were generally consistent with the known profile of IFX.

Conclusions: Most studies reported that clinical, PROs, and safety outcomes for originator-to-biosimilar switching were clinically equivalent to originator responses. Limited data are available regarding multiple switches.

Protocol Registration: www.crd.york.ac.uk/prospero identifier is CRD42021289144.

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Source
http://dx.doi.org/10.1080/14712598.2024.2378090DOI Listing

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