Participants with hepatitis C virus (HCV) genotype 1a (GT1a) infection received 3-direct-acting antiviral agent (3-DAA: ombitasvir/paritaprevir/ritonavir [25 mg/150 mg/100 mg once daily] and dasabuvir [250 mg twice daily]) for 12 weeks.

Participants with hepatitis C virus (HCV) genotype 4 (GT4) infection received 2-direct-acting antiviral agent (2-DAA: ombitasvir/paritaprevir/ritonavir [25 mg/150 mg/100 mg once daily]) for 12 weeks.

Tablet; ombitasvir coformulated with paritaprevir and ritonavir, dasabuvir tablet

SVR12 was defined as plasma hepatitis C virus ribonucleic acid (HCV RNA) level less than the lower limit of quantification (\

An adverse event (AE) is defined as any untoward medical occurrence in a patient or clinical investigation subject administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. The investigator assessed the relationship of each event to the use of study drug as either reasonable possibility or no reasonable possibility. A serious adverse event (SAE) is an event that results in death, is life-threatening, requires or prolongs hospitalization, results in a congenital anomaly, persistent or significant disability/incapacity or is an important medical event that, based on medical judgment, may jeopardize the subject and may require medical or surgical intervention to prevent any of the outcomes listed above. Treatment-emergent events (TEAEs/TESAEs) are defined as any event that began or worsened in severity from first dose of study drug until 30 days after the last dose. For more details on AEs please see the Adverse Event section.

On-treatment virologic failure was defined as confirmed HCV RNA ≥ LLOQ after HCV RNA < LLOQ during treatment or confirmed increase of > 1 log(subscript)10(subscript) IU/mL above the lowest value post-baseline in HCV RNA during treatment with at least 6 weeks of treatment.