VIENNA, April 25, 2015 /PRNewswire/ -- AbbVie (NYSE: ABBV) today announced new, preliminary safety and efficacy data from the first cohort of its ongoing, Phase 3b RUBY-I study. RUBY-I is evaluating VIEKIRAX® (ombitasvir/paritaprevir/ritonavir tablets) + EXVIERA® (dasabuvir tablets) with or without ribavirin (RBV) in treatment-naïve, non-cirrhotic, genotype 1 (GT1) chronic hepatitis C patients with severe renal impairment (stage 4 or 5), including those on hemodialysis. The primary endpoint of the study is the percentage of patients achieving sustained virologic response at 12 weeks post-treatment (SVR12). Patients who reached post-treatment week four to date (n=10 of 20 enrolled) achieved 100 percent SVR4 (n=10/10).1 RUBY-I was presented as a late-breaker today at The International Liver Congress™ (ILC) 2015, the 50th annual meeting of the European Association for the Study of the Liver (EASL) in Vienna, Austria.
"Treating hepatitis C patients with severe renal impairment may be a concern, particularly in those patients on hemodialysis," said Paul J. Pockros, M.D., director of Liver Disease Center Scripps Clinic and director of clinical research at Scripps Translational Science Institute in La Jolla, California. "With limited data currently available on the safety and efficacy of interferon-free treatments for patients with renal impairment, the preliminary results seen in RUBY-I show promising initial SVR rates with the VIEKIRAX + EXVIERA regimen in a dedicated study for this often difficult-to-treat patient population."
Additionally, RUBY-I data showed no virologic failures to date.1 Preliminary safety analyses reported that patients experienced mainly mild or moderate adverse events when receiving VIEKIRAX + EXVIERA with or without RBV, most commonly (>20 percent) anemia, fatigue, diarrhea, nausea, dizziness and headache.1 To date, eight of 13 genotype 1a (GT1a) patients had a RBV dose interruption.1
"RUBY-I is part of AbbVie's broader Phase 3b program and demonstrates our continued focus on people living with hepatitis C that have specific needs," said Scott Brun, M.D., vice president, pharmaceutical development, AbbVie. "Studies in our Phase 3b program will help to further expand our knowledge of the utility of VIEKIRAX + EXVIERA in special populations encountered in clinical practice."
Additional Phase 3b studies from AbbVie presented at ILC 2015 included MALACHITE-I and MALACHITE-II data, and the TOPAZ-I and TOPAZ-II study design. The MALACHITE studies evaluate adult patients with GT1 chronic HCV infection without cirrhosis receiving VIEKIRAX + EXVIERA with or without RBV compared to treatment with telaprevir with pegylated-interferon and RBV, which remains the standard of care in many regions of the world.2,3 The TOPAZ studies will evaluate the effect of SVR12 on long-term outcomes, five years following treatment with VIEKIRAX + EXVIERA with or without RBV in adults with GT1 chronic HCV infection.4
About RUBY-I Study
RUBY-I is an ongoing, multi-center, open-label Phase 3b study with two cohorts that evaluates the safety and efficacy of 12 or 24 weeks of treatment with VIEKIRAX® + EXVIERA® with or without ribavirin, based on sub-genotype in treatment-naïve, adult patients with genotype 1 (GT1) chronic hepatitis C virus infection who have severe renal impairment (pre-dialysis; stage 4 chronic kidney disease) or end-stage renal disease (on hemodialysis; stage 5 chronic kidney disease) with or without compensated cirrhosis.1 Cohort 1 consists of 20 patients without cirrhosis and cohort 2 will evaluate approximately 20 patients with or without compensated cirrhosis. Ribavirin was started at 200mg once daily for all genotype 1a (GT1a)- infected patients and dosed four hours prior to the start of GT1a patients on hemodialysis. Additional study results, including cohort 2, will be disclosed at future scientific congresses.
About VIEKIRAX® + EXVIERA®
VIEKIRAX + EXVIERA is approved in the European Union for the treatment of genotype 1 (GT1) chronic hepatitis C virus (HCV) infection, including patients with compensated cirrhosis. VIEKIRAX is approved in the European Union for the treatment of genotype 4 (GT4) chronic HCV infection.
VIEKIRAX consists of the fixed-dose combination of paritaprevir 150mg (NS3/4A protease inhibitor) and ritonavir 100mg with ombitasvir 25mg (NS5A inhibitor), dosed once daily, and EXVIERA consists of dasabuvir 250mg (non-nucleoside NS5B polymerase inhibitor) dosed twice daily taken with or without ribavirin (RBV), dosed twice daily based on patient type. VIEKIRAX + EXVIERA is taken for 12 weeks with or without RBV, except in GT1a and GT4 patients with compensated cirrhosis, who should take it for 24 weeks with RBV.
Paritaprevir was discovered during the ongoing collaboration between AbbVie and Enanta Pharmaceuticals (NASDAQ: ENTA) for hepatitis C protease inhibitors and regimens that include protease inhibitors. Paritaprevir has been developed by AbbVie for use in combination with AbbVie's other investigational medicines for the treatment of chronic hepatitis C.
Additional information about AbbVie's hepatitis C development program can be found on www.clinicaltrials.gov.
About AbbVie's HCV Clinical Development Program
The AbbVie HCV clinical development program is intended to advance scientific knowledge and clinical care by investigating interferon-free, all-oral treatments with or without ribavirin with the goal of achieving high sustained virologic response rates in as many patients as possible. AbbVie's global Phase 3b program plans to include more than 2,800 genotype 1 patients in over 200 study centers worldwide, including the U.S., Canada, Europe, Russia and Brazil. Data in patients with severe renal impairment, including patients on hemodialysis, will be presented at ILC. Additionally, AbbVie's Phase 3b HCV program includes studies in patients with decompensated and compensated cirrhosis. Data from these studies will be presented at future scientific congresses.
Additional information about AbbVie's hepatitis C development program can be found on www.clinicaltrials.gov.
VIEKIRAX® + EXVIERA® EU Indication
VIEKIRAX is indicated in combination with other medicinal products for the treatment of chronic hepatitis C (CHC) in adults. EXVIERA is indicated in combination with other medicinal products for the treatment of chronic hepatitis C (CHC) in adults.
Important EU Safety Information
VIEKIRAX + EXVIERA are contraindicated in patients with severe hepatic impairment (Child-Pugh C). Patients taking ethinyl estradiol-containing medicinal products must discontinue them and switch to an alternative method of contraception prior to initiating VIEKIRAX + EXVIERA. Do not give VIEKIRAX with certain drugs that are sensitive CYP3A substrates or strong inhibitors of CYP3A. Do not give VIEKIRAX and EXVIERA with strong or moderate enzyme inducers. Do not give EXVIERA with certain drugs that are strong inhibitors of CYP2C8.
Special warnings and precautions for use:
VIEKIRAX and EXVIERA are not recommended as monotherapy and should be used in combination with other medicinal products for the treatment of hepatitis C infection.
Pregnancy and concomitant use with ribavirin
When VIEKIRAX + EXVIERA are used in combination with ribavirin, women of childbearing potential or their male partners must use an effective form of contraception during the treatment and 6 months after the treatment. Refer to the Summary of Product Characteristics for ribavirin for additional information.
Transient elevations of ALT to >5x ULN without concomitant elevations of bilirubin occurred in clinical trials with VIEKIRAX + EXVIERA and were more frequent in a subgroup who were using ethinyl estradiol-containing contraceptives.
Use with concomitant medicinal products
Use caution when administering VIEKIRAX with fluticasone or other glucocorticoids that are metabolized by CYP3A4. A reduction in colchicine dosage or interruption in colchicine is recommended in patients with normal renal or hepatic function. VIEKIRAX with or without EXVIERA is expected to increase exposure of statins so certain statins need to be discontinued or dosages reduced. Low dose ritonavir, which is part of VIEKIRAX, may select for PI resistance in HIV co-infected patients without ongoing antiretroviral therapy. HIV co-infected patients without suppressive antiretroviral therapy should not be treated with VIEKIRAX.
Most common (>20 percent) adverse reactions for VIEKIRAX + EXVIERA with RBV were fatigue and nausea.
Full summary of product characteristics is available at www.ema.europa.eu
Globally, prescribing information varies; refer to the individual country product label for complete information.
AbbVie is a global, research-based biopharmaceutical company formed in 2013 following separation from Abbott Laboratories. The company's mission is to use its expertise, dedicated people and unique approach to innovation to develop and market advanced therapies that address some of the world's most complex and serious diseases. AbbVie employs more than 26,000 people worldwide and markets medicines in more than 170 countries. For further information on the company and its people, portfolio and commitments, please visit www.abbvie.com. Follow @abbvie on Twitter or view careers on our Facebook or LinkedIn page.
Some statements in this news release may be forward-looking statements for purposes of the Private Securities Litigation Reform Act of 1995. The words "believe," "expect," "anticipate," "project" and similar expressions, among others, generally identify forward-looking statements. AbbVie cautions that these forward-looking statements are subject to risks and uncertainties that may cause actual results to differ materially from those indicated in the forward-looking statements. Such risks and uncertainties include, but are not limited to, challenges to intellectual property, competition from other products, difficulties inherent in the research and development process, adverse litigation or government action, and changes to laws and regulations applicable to our industry.
Additional information about the economic, competitive, governmental, technological and other factors that may affect AbbVie's operations is set forth in Item 1A, "Risk Factors," in AbbVie's 2014 Annual Report on Form 10-K, which has been filed with the Securities and Exchange Commission. AbbVie undertakes no obligation to release publicly any revisions to forward-looking statements as a result of subsequent events or developments, except as required by law.
1 Pockros P, et al. Safety Of Ombitasvir/Paritaprevir/Ritonavir Plus Dasabuvir For Treating HCV GT1 Infection In Patients With Severe Renal Impairment Or End-stage Renal Disease: The RUBY-I Study. Presented at the 50th International Liver Congress (ILC); April 22-26; Vienna, Austria
2 Conway B, et al. MALACHITE-I: Phase 3b Trial Of Ombitasvir/Paritaprevir/R And Dasabuvir +/-Ribavirin Or Telaprevir + Peginterferon/Ribavirin In Treatment-naïve Adults With HCV Genotype 1. Abstract presented at the 50th International Liver Congress (ILC); April 22-26; Vienna, Austria
3 Dore G, et al. MALACHITE-II: Phase 3b Trial Of Ombitasvir/Paritaprevir/R And Dasabuvir + Ribavirin Or Telaprevir + Peginterferon/Ribavirin In Peginterferon/Ribavirin Treatment-experienced Adults With HCV Genotype 1. Abstract presented at the 50th International Liver Congress (ILC); April 22-26; Vienna, Austria
4 Dumas E, et al. Phase 3b Studies To Assess Long-term Clinical Outcomes In HCV GT1-infected Patients Treated With Ombitasvir/Paritaprevir/Ritonavir And Dasabuvir With Or Without Ribavirin. Abstract presented at the 50th International Liver Congress (ILC); April 22-26; Vienna, Austria.