Association between tocilizumab, sarilumab and all-cause mortality at 28 days in hospitalised patients with COVID-19: A network meta-analysis

Peter J. Godolphin*, David J. Fisher, Lindsay R. Berry, Lennie P.G. Derde, Janet V. Diaz, Anthony C. Gordon, Elizabeth Lorenzi, John C. Marshall, Srinivas Murthy, Manu Shankar-Hari, Jonathan A.C. Sterne, Jayne F. Tierney, Claire L. Vale

*Corresponding author for this work

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Abstract

Background A recent prospective meta-analysis demonstrated that interleukin-6 antagonists are associated with lower all-cause mortality in hospitalised patients with COVID-19, compared with usual care or placebo. However, emerging evidence suggests that clinicians are favouring the use of tocilizumab over sarilumab. A new randomised comparison of these agents from the REMAP-CAP trial shows similar effects on in-hospital mortality. Therefore, we initiated a network meta-analysis, to estimate pairwise associations between tocilizumab, sarilumab and usual care or placebo with 28-day mortality, in COVID-19 patients receiving concomitant corticosteroids and ventilation, based on all available direct and indirect evidence. Methods Eligible trials randomised hospitalised patients with COVID-19 that compared tocilizumab or sarilumab with usual care or placebo in the prospective meta-analysis or that directly compared tocilizumab with sarilumab. Data were restricted to patients receiving corticosteroids and either non-invasive or invasive ventilation at randomisation. Pairwise associations between tocilizumab, sarilumab and usual care or placebo for all-cause mortality 28 days after randomisation were estimated using a frequentist contrast-based network meta-analysis of odds ratios (ORs), implementing multivariate fixed-effects models that assume consistency between the direct and indirect evidence. Findings One trial (REMAP-CAP) was identified that directly compared tocilizumab with sarilumab and supplied results on all-cause mortality at 28-days. This network meta-analysis was based on 898 eligible patients (278 deaths) from REMAP-CAP and 3710 eligible patients from 18 trials (1278 deaths) from the prospective meta-analysis. Summary ORs were similar for tocilizumab [0•82 [0•71–0•95, p = 0•008]] and sarilumab [0•80 [0•61–1•04, p = 0•09]] compared with usual care or placebo. The summary OR for 28-day mortality comparing tocilizumab with sarilumab was 1•03 [95%CI 0•81–1•32, p = 0•80]. The p-value for the global test of inconsistency was 0•28. Conclusions Administration of either tocilizumab or sarilumab was associated with lower 28-day all-cause mortality compared with usual care or placebo. The association is not dependent on the choice of interleukin-6 receptor antagonist.

Original languageEnglish
Article numbere0270668
JournalPLoS ONE
Volume17
Issue number7 July
DOIs
Publication statusPublished - Jul 2022

Keywords

  • Adrenal Cortex Hormones/therapeutic use
  • Antibodies, Monoclonal, Humanized
  • Humans
  • Network Meta-Analysis
  • Prospective Studies
  • Randomized Controlled Trials as Topic
  • COVID-19 Drug Treatment

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