High efficacy of generic and brand direct acting antivirals in treatment of chronic hepatitis C

Int J Infect Dis. 2018 Oct:75:109-114. doi: 10.1016/j.ijid.2018.07.025. Epub 2018 Aug 2.

Abstract

Background: Direct acting antivirals (DAAs) are highly effective for treatment of hepatitis C (HCV) but brand products are priced beyond the means of most low and middle income countries (LMICs). Although a few DAAs are offered at reduced prices in access programs, they are still beyond affordability in limited resource settings with a large HCV infected population. Cheap generics might fill this economic need, but studies comparing their clinical efficacy to that of original products are limited.

Aim: To compare efficacy of brand and generic DAAs used in the national treatment program in Egypt.

Methods: HCV treatment eligible patients (n=971) were enrolled. They were treated with 12 weeks of either sofosbuvir-daclatasvir (SOF-DCV) or SOF-ledipasvir (SOF-LDV). Ribavirin (RBV) was added to patients with cirrhosis and to SOF experienced patients. Patients with cirrhosis who were RBV intolerant were treated for 24 weeks without RBV.

Results: Most patients were males (61.4%), treatment naïve (88.6%), without cirrhosis (61.7%), and the mean age was 51.3±11.31 years. Baseline characteristics were not different in patients treated with brand or generic medications regarding age, liver tests, creatinine, platelets, MELD score, baseline HCV-RNA and transient elastography. Overall sustained virologic response (SVR) rate was 98.1%, which was similar for generic and brand drugs (98.2% vs. 98.1%; p=1), and similar with both regimens used (SOF-DCV±RBV: brand: 98.1%, generic 97.8%; p=0.729, SOF-LDV±RBV: brand 98.2%, generic 100%; p=0.729). AST and ALT decreased significantly with initiation of therapy with both generic and original drugs.

Conclusion: Generic and brand DAAs are equally effective for achieving SVR and improving aminotransferases.

Keywords: Brand; Daclatasvir; Direct acting antivirals; Generic; HCV; Ledipasvir; Sofosbuvir; Sustained virological response.

Publication types

  • Comparative Study

MeSH terms

  • Adult
  • Antiviral Agents / therapeutic use*
  • Benzimidazoles / therapeutic use
  • Drug Therapy, Combination
  • Drugs, Generic / therapeutic use
  • Egypt
  • Female
  • Fluorenes / therapeutic use
  • Genotype
  • Hepacivirus / drug effects
  • Hepacivirus / genetics
  • Hepacivirus / physiology
  • Hepatitis C, Chronic / drug therapy*
  • Humans
  • Male
  • Middle Aged
  • Ribavirin / therapeutic use
  • Sofosbuvir / therapeutic use
  • Sustained Virologic Response
  • Treatment Outcome

Substances

  • Antiviral Agents
  • Benzimidazoles
  • Drugs, Generic
  • Fluorenes
  • ledipasvir
  • Ribavirin
  • Sofosbuvir