Treatment of Chronic Hepatitis C
Direct-acting antiviral (DAA) therapy based on HCV genotype is the recommended treatment for chronic hepatitis C, with specific regimens tailored to genotype, prior treatment experience, and presence of cirrhosis. 1
Treatment Selection by HCV Genotype
Genotype 1a
Initial treatment (without cirrhosis):
- Ledipasvir/sofosbuvir for 12 weeks 1
- Can be shortened to 8 weeks in treatment-naïve patients with HCV RNA <6,000 IU/mL without cirrhosis or HIV co-infection 1
- Alternative options: Elbasvir/grazoprevir (12 weeks), Ombitasvir/paritaprevir/ritonavir plus dasabuvir with ribavirin (12 weeks), or Sofosbuvir/velpatasvir (12 weeks) 1
Initial treatment (with compensated cirrhosis):
Genotype 1b
- Similar regimens to genotype 1a but without ribavirin requirement for some combinations 1
Genotype 2
- Initial treatment:
Genotype 3
- Initial treatment:
Genotype 4,5, or 6
- Initial treatment:
Special Populations
Treatment-Experienced Patients
- Regimens typically require longer duration (12-24 weeks) and may require ribavirin addition 1
- For genotype 1a with prior treatment failure:
- Ledipasvir/sofosbuvir with ribavirin for 12 weeks or without ribavirin for 24 weeks 1
Patients with Cirrhosis
- Compensated cirrhosis: May require longer treatment duration or ribavirin addition 1
- Decompensated cirrhosis: Ledipasvir/sofosbuvir with ribavirin for 12 weeks 2, 3
Post-Liver Transplant
Treatment Monitoring
- Test all patients for HBV co-infection (HBsAg and anti-HBc) before starting treatment 2
- Monitor for HBV reactivation during and after treatment in co-infected patients 2
- Assess for drug interactions, particularly with HIV medications or amiodarone 4
Clinical Considerations
- SVR rates with modern DAA regimens exceed 90-95% for most genotypes and patient populations 5, 6
- Treatment decisions should prioritize the most effective regimen based on genotype and cirrhosis status rather than treatment duration 6
- Patients with decompensated cirrhosis have lower SVR rates (60-88%) compared to those with compensated disease (>95%) 3
Common Pitfalls to Avoid
- Failing to test for HBV before initiating treatment (risk of HBV reactivation) 2
- Shortening treatment duration to 8 weeks in patients with F3 fibrosis or high viral load (>6 million IU/mL) 1
- Overlooking drug interactions, especially with HIV medications or cardiac drugs like amiodarone 4
- Not adjusting ribavirin dosing based on weight and renal function 2
The treatment landscape for hepatitis C has dramatically improved with DAAs, offering high cure rates with shorter treatment durations and fewer side effects compared to older interferon-based regimens.