Potential first-in-class treatment is well-tolerated in patients with chronic hepatitis B
April 16, 2016, Barcelona, Spain: New data presented today confirms that a novel first-in-class treatment for Hepatitis B, called NVR 3-778, is well-tolerated and can reduce levels of the virus' genetic material in the body when combined with pegylated interferon after four weeks of treatment. The updated Phase 1b trial results were presented today at The International Liver CongressTM 2016 in Barcelona, Spain.
NVR 3-778 is a first-in-class HBV capsid assembly inhibitor which modulates the function of the core protein. This protein plays an essential role in viral replication and persistence of the virus.
Approximately 14 million people within the World Health Organization European region are chronically infected with Hepatitis B.1 There are several medicines that are effective at suppressing the virus over many years, slowing down damage to the liver, and allowing the body to repair itself.2 However, it is unusual for these treatments to clear the virus permanently.3
"Previous Phase 1 results with NVR 3-778 have shown reduction in HBV viral load," said Dr Man-Fung Yuen of Queen Mary Hospital, University of Hong Kong, and lead author of the study. "It is promising to see that the combination of NVR 3-778 with pegylated interferon produces responses that are greater than those seen with either monotherapy."
The international Phase 1b study was conducted in 64 patients who had not previously received any treatment for Hepatitis B. There were six dosing cohorts in the study: 100mg daily, 200mg daily, 400mg daily, 600mg twice a day, or 600mg twice a day combined with pegylated interferon, and finally pegylated interferon combined with placebo. Treatment was given for a total of 28 days.
The results demonstrated that NVR 3-778 was well tolerated in all cohorts with no discontinuations. Most adverse events were mild and not attributed to the study drug. Dose-related reductions in HBV DNA were observed, the largest of which was in the NVR 3-778 and pegylated interferon combination (1.97 log IU/mL). Using NVR 3-778 alone, the HBV DNA reduction was 1.72 log10 in the 600 mg BD group, and in the pegylated interferon alone group the HBV DNA reduction was 1.06 log10. Study results also indicated early reductions in levels of HBeAg (a sign that the virus is actively replicating in the body and that the infection is worse) across all groups, which were greatest in the NVR 3-778 group.
"The results from this study are certainly interesting and promising for the treatment of patients with Hepatitis B,'" said Professor Frank Tacke, EASL Governing Board member. "The medical community is always on the look-out for treatments which can cure this condition, as opposed to simply suppressing the replication of the virus. More research is needed to confirm whether NVR 3-778 could really change the treatment paradigm."
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™ takes place from April 13 – 17, 2016, at the Fira Barcelona Gran Via, Barcelona, Spain.
Since EASL's 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.
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Onsite location reference
Late-breaker session, Hall 6.0
Saturday 16 April, 16:00 – 18:00
Presenter: Man-Fung Yuen, Hong Kong
Abstract: LB06, NVR 3-778, a first-in-class HBV core inhibitor, alone and in combination with peg-interferon (PegIFN), in treatment-naive HBeAg-positive patients: early reductions in HBV DNA and HBeAg
Author disclosures of interest
Honoraria, speaker bureaus and research fund supports from AbbVie, Arrowhead Research Corporation, Bristol Myers Squibb, GlaxoSmithKline, Gilead Sciences, Novartis
1 Hatzakis A et al. The state of hepatitis B and C in Europe: report from the hepatitis B and C summit conference. J Viral Hepat. 2011 Sep;18 Suppl 1:1-16.
2 NHS Direct. Hepatitis B. Available from: http://www.nhsdirect.wales.nhs.uk/encyclopaedia/h/article/hepatitisb/. Last accessed: March 2016.
3 NHS Choices. Hepatitis B – Treatment. Available from: http://www.nhs.uk/Conditions/Hepatitis-B/Pages/Treatment.aspx. Last accessed: March 2016.
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