Pharmacokinetic evaluation of sofosbuvir/velpatasvir for the treatment of Chronic Hepatitis C in pediatrics aged 3 and older

Expert Opin Drug Metab Toxicol. 2023 Dec;19(12):881-888. doi: 10.1080/17425255.2023.2292736. Epub 2024 Jan 12.

Abstract

Introduction: The World Health Organization proposed targets to eliminate hepatitis C virus (HCV) by 2030, aiming to treat ≥80% of people with HCV, decreasing new chronic infections by 90% and liver-related mortality by 65%. While children/adolescents represent a minority of cases, the true burden is underestimated. Advances in drug development have resulted in simplified treatments that are well-tolerated, effective, and pangenotypic in activity. Sofosbuvir/velpatasvir, a combined nucleotide analog NS5B polymerase inhibitor and NS5A inhibitor, respectively, is approved for HCV treatment for individuals ≥3 years, supported by safety data using lower-dose, novel formulations.

Areas covered: This review discusses chemistry, pharmacokinetics/pharmacodynamics, dosing, efficacy, and safety of sofosbuvir/velpatasvir highlighting pediatric data. Literature review included publications/conference abstracts from PubMed, Google, and Google Scholar. Information from key clinical trials/regulatory approvals is reviewed.

Expert opinion: Sofosbuvir/velpatasvir is a safe and effective therapy for the treatment of pangenotypic chronic HCV infection with limited cases of virologic relapse and adverse events among pediatric populations aged 3 years and older. However, the tolerability among children less than 6 years could be improved by alternative formulations, if not, shorter treatment durations. An aspirational role of direct-acting antivirals (DAAs) that should be explored is for the prevention of infection in exposed and at-risk pediatric populations.

Keywords: Drug evaluation; Hepatitis C; pharmacokinetics; sofosbuvir; velpatasvir.

Publication types

  • Review

MeSH terms

  • Adolescent
  • Antiviral Agents / adverse effects
  • Benzimidazoles*
  • Benzopyrans*
  • Carbamates*
  • Child
  • Genotype
  • Hepacivirus
  • Hepatitis C* / drug therapy
  • Hepatitis C, Chronic* / drug therapy
  • Heterocyclic Compounds, 4 or More Rings / adverse effects
  • Humans
  • Sofosbuvir / adverse effects
  • Treatment Outcome

Substances

  • Sofosbuvir
  • velpatasvir
  • Antiviral Agents
  • Heterocyclic Compounds, 4 or More Rings
  • Benzimidazoles
  • Benzopyrans
  • Carbamates