TY - JOUR
T1 - Grazoprevir-Elbasvir combination therapy for treatment-naive cirrhotic and noncirrhotic patients with chronic hepatitis C virus genotype 1, 4, or 6 infection
T2 - A randomized trial
AU - Zeuzem, Stefan
AU - Ghalib, Reem
AU - Reddy, K. Rajender
AU - Pockros, Paul J.
AU - Ari, Ziv Ben
AU - Zhao, Yue
AU - Brown, Deborah D.
AU - Wan, Shuyan
AU - DiNubile, Mark J.
AU - Nguyen, Bach Yen
AU - Robertson, Michael N.
AU - Wahl, Janice
AU - Barr, Eliav
AU - Butterton, Joan R.
N1 - Publisher Copyright:
© 2015 American College of Physicians.
PY - 2015/7/7
Y1 - 2015/7/7
N2 - Background: Novel interferon-and ribavirin-free regimens are needed to treat hepatitis C virus (HCV) infection. Objective: To evaluate the safety and efficacy of grazoprevir (NS3/4A protease inhibitor) and elbasvir (NS5A inhibitor) in treatment-naive patients. Design: Randomized, blinded, placebo-controlled trial. (ClinicalTrials.gov: NCT02105467) Setting: 60 centers in the United States, Europe, Australia, Scandinavia, and Asia. Patients: Cirrhotic and noncirrhotic treatment-naive adults with genotype 1, 4, or 6 infection. Intervention: Oral, once-daily, fixed-dose grazoprevir 100 mg/elbasvir 50 mg for 12 weeks, stratified by fibrosis and genotype. Patients were randomly assigned 3:1 to immediate or deferred therapy. Measurements: Proportion of patients in the immediate-treatment group achieving unquantifiable HCV RNA 12 weeks after treatment (SVR12); adverse events in both groups. Results: Among 421 participants, 194 (46%) were women, 157 (37%) were nonwhite, 382 (91%) had genotype 1 infection, and 92 (22%) had cirrhosis. Of 316 patients receiving immediate treatment, 299 of 316 (95% [95% CI, 92% to 97%]) achieved SVR12, including 144 of 157 (92% [CI, 86% to 96%]) with genotype 1a, 129 of 131 (99% [CI, 95% to 100%]) with genotype 1b, 18 of 18 (100% [CI, 82% to 100%]) with genotype 4, 8 of 10 (80% [CI, 44% to 98%]) with genotype 6, 68 of 70 (97% [CI, 90% to 100%]) with cirrhosis, and 231 of 246 (94% [CI, 90% to 97%]) without cirrhosis. Virologic failure occurred in 13 patients (4%), including 1 case of breakthrough infection and 12 relapses, and was associated with baseline NS5A polymorphisms and emergent NS3 or NS5A variants or both. Serious adverse events occurred in 9 (2.8%) and 3 (2.9%) patients in the active and placebo groups, respectively (difference <0.05 percentage point [CI,-5.4 to 3.1 percentage points]); none were considered drug related. The most common adverse events in the active group were headache (17%), fatigue (16%), and nausea (9%). Limitation: The study lacked an active-comparator control group and included relatively few genotype 4 and 6 infections. Conclusion: Grazoprevir-elbasvir achieved high SVR12 rates in treatment-naive cirrhotic and noncirrhotic patients with genotype 1, 4, or 6 infection. This once-daily, all-oral, fixed-combination regimen represents a potent new therapeutic option for chronic HCV infection.
AB - Background: Novel interferon-and ribavirin-free regimens are needed to treat hepatitis C virus (HCV) infection. Objective: To evaluate the safety and efficacy of grazoprevir (NS3/4A protease inhibitor) and elbasvir (NS5A inhibitor) in treatment-naive patients. Design: Randomized, blinded, placebo-controlled trial. (ClinicalTrials.gov: NCT02105467) Setting: 60 centers in the United States, Europe, Australia, Scandinavia, and Asia. Patients: Cirrhotic and noncirrhotic treatment-naive adults with genotype 1, 4, or 6 infection. Intervention: Oral, once-daily, fixed-dose grazoprevir 100 mg/elbasvir 50 mg for 12 weeks, stratified by fibrosis and genotype. Patients were randomly assigned 3:1 to immediate or deferred therapy. Measurements: Proportion of patients in the immediate-treatment group achieving unquantifiable HCV RNA 12 weeks after treatment (SVR12); adverse events in both groups. Results: Among 421 participants, 194 (46%) were women, 157 (37%) were nonwhite, 382 (91%) had genotype 1 infection, and 92 (22%) had cirrhosis. Of 316 patients receiving immediate treatment, 299 of 316 (95% [95% CI, 92% to 97%]) achieved SVR12, including 144 of 157 (92% [CI, 86% to 96%]) with genotype 1a, 129 of 131 (99% [CI, 95% to 100%]) with genotype 1b, 18 of 18 (100% [CI, 82% to 100%]) with genotype 4, 8 of 10 (80% [CI, 44% to 98%]) with genotype 6, 68 of 70 (97% [CI, 90% to 100%]) with cirrhosis, and 231 of 246 (94% [CI, 90% to 97%]) without cirrhosis. Virologic failure occurred in 13 patients (4%), including 1 case of breakthrough infection and 12 relapses, and was associated with baseline NS5A polymorphisms and emergent NS3 or NS5A variants or both. Serious adverse events occurred in 9 (2.8%) and 3 (2.9%) patients in the active and placebo groups, respectively (difference <0.05 percentage point [CI,-5.4 to 3.1 percentage points]); none were considered drug related. The most common adverse events in the active group were headache (17%), fatigue (16%), and nausea (9%). Limitation: The study lacked an active-comparator control group and included relatively few genotype 4 and 6 infections. Conclusion: Grazoprevir-elbasvir achieved high SVR12 rates in treatment-naive cirrhotic and noncirrhotic patients with genotype 1, 4, or 6 infection. This once-daily, all-oral, fixed-combination regimen represents a potent new therapeutic option for chronic HCV infection.
UR - http://www.scopus.com/inward/record.url?scp=84937064772&partnerID=8YFLogxK
U2 - 10.7326/M15-0785
DO - 10.7326/M15-0785
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C2 - 25909356
AN - SCOPUS:84937064772
SN - 0003-4819
VL - 163
SP - 1
EP - 13
JO - Annals of Internal Medicine
JF - Annals of Internal Medicine
IS - 1
ER -