Pre-existing minor variants with NS5A L31M/V-Y93H double substitution are closely linked to virologic failure with asunaprevir plus daclatasvir treatment for genotype 1b hepatitis C virus infection.
BackgroundL31 and Y93 in the NS5A region of the hepatitis C virus (HCV) are the most important substitution Rangehood Filter Material positions associated with resistance to direct-acting antiviral (DAA) treatment.MethodsWe analyzed the frequency of NS5A L31M/V and Y93/H in NS5A inhibitor-naive HCV genotype 1 patients who received asunaprevir plus