April 21, 2017, Amsterdam, The Netherlands: Study results presented today demonstrate that the oral, once-daily treatment regimen of glecaprevir/pibrentasvir (G/P) resulted in 95% sustained virologic response rates at 12 weeks post treatment (SVR12) in patients with Hepatitis C virus (HCV) genotype 3. In the ENDURANCE-3 study, presented at The International Liver Congress™ 2017 in Amsterdam, The Netherlands, patients infected with HCV genotype 3 without cirrhosis and who had no previous treatment history were treated with the new regimen for eight or 12 weeks, which was well tolerated. G/P had a similar safety profile to the commonly used combination of sofosbuvir and daclatasvir for 12 weeks, to which G/P was actively compared in the study.
Around 180 million people globally have chronic HCV infection,1 including approximately 15 million people in the EU.2 Genotype 3 patients have become the most difficult subgroup of patients to cure.3 Although there have been recent advances in direct-acting antiviral therapies for HCV genotype 1, genotype 3 remains a challenge and is a highly prevalent strain of the virus globally.3
"While there has been great progress made in the treatment of patients with Hepatitis C, there remain limited options for those with genotype 3 disease. As such, we are pleased to see that the investigational combination of glecaprevir/pibrentasvir achieved high SVR12 rates, in treatment naïve, non-cirrhotic patients," said Dr Graham Foster, Queen Mary University of London, United Kingdom and lead study author. "Treatment with this once-daily regimen for eight weeks could provide a highly efficacious and well-tolerated option for treatment naïve, non-cirrhotic patients with Hepatitis C, genotype 3, if approved by the regulatory authorities."
ENDURANCE-3 is a Phase 3, open-label, active-controlled study in which 348 treatment naïve, non-cirrhotic HCV genotype 3 patients were randomised to receive 12 weeks of once-daily therapy with either co-formulated glecaprevir/pibrentasvir, or with sofosbuvir plus daclatasvir. Subsequently, 157 patients were enrolled to receive glecaprevir/pibrentasvir for eight weeks. The primary endpoint of the study was the percentage of patients who achieved SVR12.
SVR12 was achieved in 222/233 (95%) (95% confidence interval 93-98) of patients treated with glecaprevir/pibrentasvir for 12 weeks, and in 111/115 (97%) (95% confidence interval 91-99) of patients treated with sofosbuvir plus daclatasvir for 12 weeks. In patients treated with glecaprevir/pibrentasvir for eight weeks, SVR12 was achieved in 149/157 (95%) (95% confidence interval 92-98) of patients. Relapse occurred in 1% of patients in both 12 week treatment regimens, and in 3% of patients in the eight week regimen. Adverse events (71%) were mostly mild and there were no serious treatment-related adverse events.
"These results are more than encouraging, considering that treatment options for HCV genotype 3 are still suboptimal," said Prof Francesco Negro, Divisions of Gastroenterology and Hepatology of Clinical Pathology, University Hospital of Geneva, Switzerland, and EASL Governing Board Member.
About The International Liver Congress™
This annual congress is the biggest event in the EASL calendar, attracting scientific and medical experts from around the world to learn about the latest in liver research. Attending specialists present, share, debate and conclude on the latest science and research in hepatology, working to enhance the treatment and management of liver disease in clinical practice. This year, the congress is expected to attract approximately 10,000 delegates from all corners of the globe. The International Liver Congress™ 2017 will take place from April 19 - 23, at the RAI Amsterdam, Amsterdam, The Netherlands.
About The European Association for the Study of the Liver (EASL) (http://www.
Since its foundation in 1966, this not-for-profit organisation has grown to over 4,000 members from all over the world, including many of the leading hepatologists in Europe and beyond. EASL is the leading liver association in Europe, having evolved into a major European Association with international influence, with an impressive track record in promoting research in liver disease, supporting wider education and promoting changes in European liver policy.
For more information, please contact the ILC Press Office at:
- Email: ILCpressoffice@ruderfinn.co.uk
- Telephone: +44 (0)7841 009 252
Onsite location reference
Session title: General session II and award ceremony I
Time, date and location of session: 08:30 - 10:30, Friday 21 April, Hall 5
Presenter: Graham Foster, United Kingdom
Abstract: ENDURANCE-3: safety and efficacy of glecaprevir/pibrentasvir compared to sofosbuvir plus daclatasvir in treatment-naïve HCV genotype 3-infected patients without cirrhosis (GS007), 08:30 - 08:45
Merck, Roche and GSK.
1 EASL Recommendation on Treatment of Hepatitis C 2016. Available from: http://www.
2 World Health Organization. Global Alert and Response - Hepatitis C. Available from: http://www.
3 Tapper EB, Afdhal N. Is 3 the new 1: perspectives on virology, natural history and treatment for hepatitis C genotype 3. J Viral Hepat. 2013 Oct;20(10):669-77.