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Simeprevir, daclatasvir and sofosbuvir for hepatitis C virus-infected patients with decompensated liver disease
E Lawitz1, F Poordad1, J A Gutierrez1
1Texas Liver Institute, University of Texas Health Science Center, San Antonio, TX, USA.
Insights
This study shows that a 12-week treatment with simeprevir, daclatasvir, and sofosbuvir achieved a 100% sustained virologic response (SVR12) in cirrhotic hepatitis C patients. The combination therapy was safe and effective for patients with portal hypertension or decompensated liver disease.
Area of Science:
- Hepatology
- Virology
- Pharmacology
Background:
- Chronic hepatitis C virus (HCV) infection affects millions, potentially leading to liver cirrhosis.
- Cirrhosis can progress to compensated or decompensated stages, impacting patient outcomes.
- Direct-acting antivirals (DAAs) have revolutionized HCV treatment, but data in advanced liver disease are crucial.
Purpose of the Study:
- To evaluate the efficacy and safety of a 12-week regimen of simeprevir, daclatasvir, and sofosbuvir in cirrhotic HCV patients.
- To assess the treatment in patients with genotype 1 or 4 HCV infection, portal hypertension, or decompensated liver disease (Child-Pugh A or B).
- To determine the primary endpoint of sustained virologic response 12 weeks after treatment completion (SVR12).
Main Methods:
- Phase II IMPACT study involving 40 treatment-naïve or experienced adult patients with HCV genotype 1 or 4.
- Patients received a 12-week combination therapy: simeprevir (150 mg), daclatasvir (60 mg), and sofosbuvir (400 mg) daily.
- Patients were stratified by Child-Pugh (CP) score: CP A (<7) with portal hypertension or CP B (7-9).
Main Results:
- All 40 enrolled patients (19 CP A, 21 CP B) achieved the primary endpoint of SVR12, demonstrating 100% efficacy.
- Pharmacokinetic exposure of study drugs was higher in CP B patients compared to CP A patients.
- The treatment was generally safe and well-tolerated, with mostly Grade 1/2 adverse events; one Grade 3 gastrointestinal hemorrhage in a CP B patient was unrelated to study drugs.
Conclusions:
- A 12-week treatment course of simeprevir, daclatasvir, and sofosbuvir is highly effective, achieving 100% SVR12 in cirrhotic HCV patients.
- This combination therapy is safe and well-tolerated in patients with portal hypertension or decompensated liver disease (CP A and B).
- The findings support the use of this DAA combination for advanced HCV liver disease.
Abstract:
Approximately three million individuals in the United States are chronically infected with hepatitis C virus (HCV). Chronic HCV infection may lead to the development of compensated as well as decompensated liver cirrhosis. The Phase II IMPACT study was conducted in HCV genotype 1- or 4-infected cirrhotic patients with portal hypertension or decompensated liver disease and assessed for the first time the combination of the three direct-acting antivirals simeprevir, daclatasvir and sofosbuvir. Treatment-naïve or treatment-experienced adults with Child-Pugh (CP) score <7 (CP A) and evidence of portal hypertension, or CP score 7-9 (CP B), received 12 weeks of simeprevir 150 mg, daclatasvir 60 mg and sofosbuvir 400 mg, once daily. The primary efficacy endpoint was sustained virologic response 12 weeks after end of treatment (SVR12). Pharmacokinetics and safety were also assessed. Overall, 40 patients were enrolled (CP A: 19; CP B: 21). All 40 patients achieved SVR12. At week 8, the mean pharmacokinetic exposure to simeprevir, sofosbuvir, daclatasvir and GS-331007 (sofosbuvir metabolite) was 2.2-, 1.5-, 1.2- and 1.2-fold higher in patients with CP B than CP A, respectively. Grade 1/2 adverse events (AEs) occurred in 26 of 40 (65%) patients. One CP B patient had a Grade 3 AE (gastrointestinal haemorrhage), which was reported as a serious AE but not considered related to study drugs. Treatment for 12 weeks with simeprevir, daclatasvir and sofosbuvir was generally safe and well tolerated, and resulted in 100% of cirrhotic patients with portal hypertension or decompensated liver disease achieving SVR12.
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