Efficacy and safety of ombitasvir/paritaprevir/ritonavir and dasabuvir with low-dose ribavirin in patients with chronic hepatitis C virus genotype 1a infection without cirrhosis

J Viral Hepat. 2019 Aug;26(8):1027-1030. doi: 10.1111/jvh.13109. Epub 2019 May 6.


Patients infected with hepatitis C virus (HCV) treated with interferon-free direct-acting antivirals may still require ribavirin. However, ribavirin is associated with adverse events that can limit its use. This open-label, multicentre, Phase 3 study evaluated the safety and efficacy of ombitasvir/paritaprevir/ritonavir + dasabuvir (OBV/PTV/r + DSV) with low-dose ribavirin for 12 weeks in genotype 1a-infected patients without cirrhosis. The primary efficacy endpoint was sustained virologic response at post-treatment Week 12 (SVR12). The primary safety endpoint was haemoglobin <10 g/dL during treatment and decreased from baseline. Overall, 105 patients enrolled. The SVR12 rate was 89.5% (n/N = 94/105; 95% CI, 83.7-95.4). The study did not achieve noninferiority versus the historic SVR12 rate for OBV/PTV/r + DSV plus weight-based ribavirin. Five patients experienced virologic failure, four discontinued, and two had missing SVR12 data. Excluding nonvirologic failures, the SVR12 rate was 94.9% (n/N = 94/99). One patient met the primary safety endpoint. OBV/PTV/r + DSV plus low-dose ribavirin offers an alternative option for patients in whom full-dose ribavirin may compromise tolerability, although noninferiority to the weight-based ribavirin regimen was not met.

Trial registration: ClinicalTrials.gov NCT02609659.

Keywords: GEODE-II; genotype 1a; hepatitis C virus; interferon-free therapy; low-dose ribavirin.

Publication types

  • Clinical Trial, Phase III
  • Multicenter Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anilides / therapeutic use
  • Antiviral Agents / therapeutic use*
  • Carbamates / therapeutic use
  • Drug Administration Schedule
  • Drug Therapy, Combination
  • Drug-Related Side Effects and Adverse Reactions
  • Female
  • Genotype
  • Hepacivirus / genetics*
  • Hepatitis C, Chronic / drug therapy*
  • Humans
  • Macrocyclic Compounds / therapeutic use
  • Male
  • Ribavirin / therapeutic use
  • Ritonavir / therapeutic use
  • Sulfonamides / therapeutic use
  • Treatment Outcome
  • Uracil / analogs & derivatives
  • Uracil / therapeutic use


  • Anilides
  • Antiviral Agents
  • Carbamates
  • Macrocyclic Compounds
  • Sulfonamides
  • ombitasvir
  • Ribavirin
  • Uracil
  • dasabuvir
  • Ritonavir
  • paritaprevir

Associated data

  • ClinicalTrials.gov/NCT02609659