Interleukin-6 receptor inhibition with tocilizumab induces a selective and substantial increase in plasma IP-10 and MIP-1β in non-ST-elevation myocardial infarction

Int J Cardiol. 2018 Nov 15:271:1-7. doi: 10.1016/j.ijcard.2018.04.136. Epub 2018 Jun 29.

Abstract

Aim: To evaluate the effect of interleukin-6 inhibition with tocilizumab on the cytokine network in patients with acute non-ST-elevation myocardial infarction (NSTEMI).

Methods: 117 patients with acute NSTEMI were randomised to an intravenous infusion of 280 mg tocilizumab or placebo prior to coronary angiography. Blood samples were obtained at baseline, at 6 consecutive points in time during hospitalisation, and at follow-up after 3 and 6 months. Cytokines (n = 27) were analysed with a multiplex cytokine assay.

Results: Using a mixed between-within subjects analysis of variance, we observed a significant (p < 0.001) between-group difference in changes for interferon gamma-inducible protein (IP-10) and macrophage inflammatory protein-1β (MIP-1β), due to significant increases in the tocilizumab group during hospitalisation (i.e., IP-10 median change from baseline during hospitalisation (mΔ), placebo: 3 (-60, 68) pg/ml vs tocilizumab: 209 (69, 335) pg/ml; MIP-1β mΔ, placebo: 5 (-2, 12) pg/ml vs tocilizumab: 39 (24, 63) pg/ml). MIP-1β was inversely correlated to troponin T (r = -0.28, p < 0.05) and neutrophils (r = -0.32, p < 0.05) in the tocilizumab group. In contrast, tocilizumab had only modest or no effects on the other examined cytokines.

Conclusions: Tocilizumab led to a selective and substantial increase in IP-10 and MIP-1β during the acute phase of NSTEMI, with no or only minor effects on the other measured cytokines. ClinicalTrials.gov, NCT01491074.

Keywords: IP-10; Inflammation; Interleukin-6; MIP-1β; Myocardial infarction; Tocilizumab.

Publication types

  • Multicenter Study
  • Randomized Controlled Trial

MeSH terms

  • Aged
  • Antibodies, Monoclonal, Humanized / pharmacology*
  • Antibodies, Monoclonal, Humanized / therapeutic use
  • Biomarkers / blood
  • Chemokine CCL4 / blood*
  • Chemokine CXCL10 / blood*
  • Female
  • Humans
  • Male
  • Middle Aged
  • Non-ST Elevated Myocardial Infarction / blood*
  • Non-ST Elevated Myocardial Infarction / drug therapy
  • Receptors, Interleukin-6 / antagonists & inhibitors*
  • Receptors, Interleukin-6 / blood*

Substances

  • Antibodies, Monoclonal, Humanized
  • Biomarkers
  • CXCL10 protein, human
  • Chemokine CCL4
  • Chemokine CXCL10
  • Receptors, Interleukin-6
  • tocilizumab

Associated data

  • ClinicalTrials.gov/NCT01491074