Vagomimetic effects of fingolimod: Physiology and clinical implications

Emilio Vanoli, Francesco Pentimalli, Gianluca Botto

Research output: Contribution to journalArticlepeer-review

Abstract

Fingolimod is a sphingosine 1-phosphate (S1P) receptor modulator approved to treat relapsing-remitting multiple sclerosis (MS). Initiation of treatment with fingolimod has been found to produce transient bradycardia and/or slowing of atrioventricular impulse conduction in a small proportion of patients. This effect is thought to be due to the interaction of fingolimod with S1P receptors on the surface membrane of atrial myocytes causing a vagomimetic effect, similar to the action of acetylcholine on muscarinic receptors. As a precaution, patients are under electrocardiogram (ECG) monitoring for 6 h after receiving their first dose. Fingolimod is contraindicated in patients with overt or concealed cardiac diseases. However, the Fingolimod Initiation and caRdiac Safety Trial (FIRST), which was designed specifically to investigate the cardiac profile of fingolimod, did not show an increased risk of clinically relevant cardiac events with fingolimod. This review examines the electrophysiology and pathophysiology of cardiac impulse formation in the context of fingolimod. It concludes that these vagomimetic effects should be considered benign and should not prevent the effective use of fingolimod in the treatment of patients with MS.

Original languageEnglish
Pages (from-to)496-502
Number of pages7
JournalCNS Neuroscience and Therapeutics
Volume20
Issue number6
DOIs
Publication statusPublished - 2014

Keywords

  • Atrioventricular block
  • Bradycardia
  • Cardiac electrophysiology
  • Fingolimod

ASJC Scopus subject areas

  • Pharmacology (medical)
  • Physiology (medical)
  • Psychiatry and Mental health
  • Pharmacology
  • Medicine(all)

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