Alexandros G .Sfakianakis,ENT,Anapafeos 5 Agios Nikolaos Crete 72100 Greece,00302841026182

Πέμπτη 22 Σεπτεμβρίου 2022

Rapid infusion of infliximab biosimilars and the incidence and severity of infusion‐related reactions in patients with inflammatory bowel disease

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Rapid infusion of infliximab biosimilars and the incidence and severity of infusion-related reactions in patients with inflammatory bowel disease

This manuscript adds to the limited literature regarding the safety of rapid infusions (≤60 min) of infliximab biosimilars in patients with inflammatory bowel disease. In our study, rapid infusions of infliximab biosimilars were not associated with an increase in the incidence of infusion reactions compared with rapid infusions of infliximab reference product. Additionally, we compared the incidence of infusion reactions of rapid infusions of infliximab biosimilars to standard infusions (120 min) of infliximab biosimilars and reference product, and showed no difference in these prespecified outcomes; this demonstrates the overall safety of infliximab infusions. We believe this manuscript can aid institutions to move towards initiating rapid infusions in patients on infliximab biosimilars. Shorter infusion administration times provide cost-saving opportunities by increasing the number of available appointments at infusion centres, and may improve patient experience by reducin g the amount of time spent at a facility. Payers and health plans are increasingly preferring biosimilars on their formularies, which may result in more frequent utilization of infliximab biosimilar agents.


Abstract

What Is Known and Objective

Infliximab is an anti-tumour necrosis factor agent used in the treatment of inflammatory bowel disease (IBD), which includes Crohn's disease and ulcerative colitis. While the use of infliximab is well established in the treatment of IBD, there are now four recently FDA-approved infliximab biosimilars that are increasingly used due to their cost-benefit for patients, institutions and payors. In addition, shortening the length of infliximab infusions from 120 min (standard infusion) to 60 min or less (rapid infusion) has been shown to safely provide further cost-benefit while also improving patient convenience. The safety of rapid infusions has been well-established for the infliximab reference product, however, there are limited data available regarding the safety of rapid infusions for infliximab biosimilars. The purpose of this study was to compare the incidence and severity of infusion reactions among patients with IBD receiving rapid infusion of infliximab reference product compared with infliximab biosimilar.

Methods

This was a retrospective analysis of electronic health record data of patients with a diagnosis of IBD receiving an infliximab reference product or infliximab biosimilar infusion between December 2020 and December 2021. Patient-level variables included demographics, immunomodulator use, IBD-related hospitalization and infliximab trough concentration and antibody levels. Infusion-related variables of interest included total number of infusions, drug, dose, dosing interval, infusion time and use of pre-medications. Infusion-related reactions were defined as safety concerns documented by the administering nurse (anaphylaxis, shortness of breath, hypotension, swelling, rash, pruritus, hives, flushing, chest pain, muscle pain, joint pain, fevers, chills, headache or hypertension) or administration of emergency medications. Fisher's exact test was used to compare reaction rates.

Results and Discussion

A total of 188 patients met inclusion criteria for analysis, and a total of 1124 infusions were administered during the study period. There were no statistically significant differences among any of the pre-specified outcomes. There were no differences in the incidence of infusion reactions among rapid infusion (60 min) infliximab and infliximab biosimilars (p = 0.863). Additionally, there were no differences in the incidence of infusion reactions among standard infusion (120 min) infliximab and infliximab biosimilars (p = 0.993). Finally, there were no differences among the rate of infusion reactions between rapid infusion of infliximab biosimilars and standard infusion of infliximab biosimilars (p = 0.536). Eight patients experienced safety issues, with three patients requiring emergency medications (1.6% of 188 patients).

What Is New and Conclusions

Rapid infusions of infliximab biosimilars were not associated with an increase in the incidence of infusion reactions compared with: rapid infusion of infliximab reference product, standard infusion of infliximab biosimilars, or standard infusion of infliximab reference product. This should reassure clinicians that rapid infusions of infliximab biosimilars are safe in clinical practice.

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