AbbVie (ABBV) Updates on Glecaprevir/Pibrentasvir Treatment Regiment in HCV; High SVR12 Rates Noted at 8 Weeks

November 11, 2016 8:06 AM EST

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AbbVie (NYSE: ABBV) announced high SVR12 rates with 8 weeks of treatment with its investigational, pan-genotypic regimen of glecaprevir (ABT-493)/pibrentasvir (ABT-530) (G/P) across all major chronic hepatitis C virus (HCV) genotypes. In more than 700 genotype 1-6 (GT1-6) chronic HCV infected patients without cirrhosis and who are new to treatment, 97.5 percent (n=693/711) achieved sustained virologic response at 12 weeks post treatment (SVR12), regardless of baseline viral load. The rate of virologic failure was 1 percent (n=9/711).

These data are the first to be released from registrational studies in AbbVie's G/P clinical development program, designed to investigate a faster path to virologic cure* for all major HCV genotypes (GT1-6) and with the goal of addressing areas of continued unmet need.

"The results we announced today bring us closer to providing a potential pan-genotypic, once-daily treatment option with 8 weeks of therapy for people living without cirrhosis and who are new to treatment," said Michael Severino, M.D., executive vice president, research and development and chief scientific officer, AbbVie. "With our registrational program nearing completion, we're on track to submit our next generation, pan-genotypic regimen to regulatory authorities by the end of this year in the U.S. and early 2017 in the European Union and Japan."

These new top-line data comprise results from the 8-week arms of three registrational clinical trials evaluating the efficacy and safety of G/P – the ENDURANCE-1, ENDURANCE-3 and SURVEYOR-2 (Part 4) studies. Across the 8-week arms of all three studies, there were no discontinuations due to adverse events (AEs). The most common AEs, occurring at a rate greater than 10 percent across these arms were headache and fatigue; and there were no AEs in any study arm at a rate greater than 20 percent. No clinically relevant laboratory abnormalities, including ALT changes, were observed.

"Most patients living with HCV today have never been treated and have earlier stages of liver disease, which have not yet progressed to cirrhosis," said Stefan Zeuzem, M.D., study author and chief of the department of medicine at the J.W. Goethe University Hospital in Frankfurt, Germany. "Therefore, these initial data highlighting the SVR rates achieved in these HCV patients to date, with 8 weeks of treatment with the G/P regimen, are particularly promising."

Overview of preliminary results across the three studies:

Study Name

Patient Population

TreatmentDuration

Treatment Regimen

SVR12 Rate

ENDURANCE-1

GT1 without cirrhosis, new to treatment or not cured with previous IFN-based treatments (pegIFN +/- RBV or SOF/RBV +/- pegIFN) , and patients co-infected with HIV-1

8 week

G/P

99%

(n=348/351)

ENDURANCE-3

GT3 without cirrhosis, new to treatment

8 week

G/P

95%

(n=149/157)

SURVEYOR-2 (Part 4)

GT2, 4, 5, 6 without cirrhosis, new to treatment or not cured with previous IFN-based treatments (pegIFN, SOF/RBV or pegIFN/SOF)

8 week

G/P

97%

(n=196/203)

G/P is an investigational, pan-genotypic regimen currently being evaluated in a registrational clinical development program, and its safety and efficacy have not been established. Additional data from the ENDURANCE-1 and SURVEYOR-2 (Part 4) studies will be presented at The Liver Meeting®, the Annual Meeting of the American Association for the Study of Liver Diseases (AASLD) in Boston. Additional information on the clinical trials for G/P is available at www.clinicaltrials.gov.

*Patients who achieve a sustained virologic response at 12 weeks post treatment (SVR12) are considered cured of hepatitis C.



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