Modeling Favipiravir Antiviral Efficacy Against Emerging Viruses: From Animal Studies to Clinical Trials

CPT Pharmacometrics Syst Pharmacol. 2020 May;9(5):258-271. doi: 10.1002/psp4.12510. Epub 2020 Apr 28.

Abstract

In 2014, our research network was involved in the evaluation of favipiravir, an anti-influenza polymerase inhibitor, against Ebola virus. In this review, we discuss how mathematical modeling was used, first to propose a relevant dosing regimen in humans, and then to optimize its antiviral efficacy in a nonhuman primate (NHP) model. The data collected in NHPs were finally used to develop a model of Ebola pathogenesis integrating the interactions among the virus, the innate and adaptive immune response, and the action of favipiravir. We conclude the review of this work by discussing how these results are of relevance for future human studies in the context of Ebola virus, but also for other emerging viral diseases for which no therapeutics are available.

Publication types

  • Research Support, Non-U.S. Gov't
  • Review

MeSH terms

  • Amides / administration & dosage*
  • Amides / pharmacology
  • Animals
  • Antiviral Agents / administration & dosage*
  • Antiviral Agents / pharmacology
  • Clinical Trials as Topic
  • Disease Models, Animal
  • Dose-Response Relationship, Drug
  • Hemorrhagic Fever, Ebola / drug therapy*
  • Hemorrhagic Fever, Ebola / virology
  • Humans
  • Models, Theoretical
  • Pyrazines / administration & dosage*
  • Pyrazines / pharmacology

Substances

  • Amides
  • Antiviral Agents
  • Pyrazines
  • favipiravir