Increased Induction Infliximab Clearance Predicts Early Antidrug Antibody Detection
JournalJournal of Clinical Pharmacology
Rights© 2020 The Authors. This is an open access article under the terms of the Creative Commons Attribution- Non Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.
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Treatment of patients with biologics such as infliximab may trigger development of antidrug antibodies, which are associated with faster drug clearance, reduced treatment efficacy, and increased risk of infusion-related reactions. The aim of this study was to identify predictors of baseline infliximab clearance and early antidrug antibody formation. Pharmacokinetic and pharmacokinetic/pharmacodynamic models for infliximab were developed using 21 178 observations from 859 patients from the PLANETRA (ClinicalTrials.gov identifier: NCT01217086) and PLANETAS (NCT01220518) studies in rheumatoid arthritis and ankylosing spondylitis, respectively, to address the specified aims. Infliximab pharmacokinetics were well described by a 2-compartment model with linear mean estimated baseline clearance of 0.26 L/day. Alongside increased body weight, serum C-reactive protein, and antidrug antibody concentrations and decreased serum albumin, elevated serum glucose levels predicted higher clearance. In patients with rheumatoid arthritis, baseline infliximab clearance and body weight were the only identified predictors of early antidrug antibody detection. The odds ratio for antidrug antibody detection for each 0.1 L/day increase in baseline infliximab clearance was 1.78 (95% confidence interval, 1.50-2.12); for each 10-kg increase in body weight, this was 1.19 (1.06-1.33). Here we describe increased serum glucose levels as a novel independent predictor of baseline infliximab clearance. Estimates of baseline infliximab clearance should be incorporated to guide dosing modifications and/or antidrug antibody prophylaxis in clinical practice.
CitationEser A, Reinisch W, Schreiber S, Ahmad T, Boulos S, Mould DR. Increased Induction Infliximab Clearance Predicts Early Antidrug Antibody Detection. J Clin Pharmacol. 2021 Feb;61(2):224-233. doi: 10.1002/jcph.1732. Epub 2020 Sep 9.
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Except where otherwise noted, this item's license is described as © 2020 The Authors. This is an open access article under the terms of the Creative Commons Attribution- Non Commercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.