TY - JOUR
T1 - Daclatasvir plus peginterferon and ribavirin is noninferior to peginterferon and ribavirin alone, and reduces the duration of treatment for HCV genotype 2 or 3 infection
AU - Dore, Gregory J
AU - Lawitz, Eric
AU - Hézode, Christophe
AU - Shafran, Stephen D
AU - Ramji, Alnoor
AU - Tatum, Harvey A
AU - Taliani, Gloria
AU - Tran, Albert
AU - Brunetto, Maurizia R
AU - Zaltron, Serena
AU - Strasser, Simone I
AU - Weis, Nina
AU - Ghesquiere, Wayne
AU - Lee, Samuel S
AU - Larrey, Dominique
AU - Pol, Stanislas
AU - Harley, Hugh
AU - George, Jacob
AU - Fung, Scott K
AU - de Lédinghen, Victor
AU - Hagens, Peggy
AU - McPhee, Fiona
AU - Hernandez, Dennis
AU - Cohen, David
AU - Cooney, Elizabeth
AU - Noviello, Stephanie
AU - Hughes, Eric A
N1 - Copyright © 2015 AGA Institute. Published by Elsevier Inc. All rights reserved.
PY - 2015/2/1
Y1 - 2015/2/1
N2 - BACKGROUND & AIMS: Twenty-four weeks of treatment with peginterferon and ribavirin for chronic hepatitis C virus (HCV) genotype 2 or 3 infection produces a sustained virologic response (SVR) in 70%-80% of patients. We performed a randomized, double-blind, phase 2b study to assess whether adding daclatasvir, a nonstructural protein 5A (NS5A) inhibitor that is active against these genotypes, improves efficacy and shortens therapy.METHODS: Patients with HCV genotype 2 or 3 infection (n = 151), enrolled at research centers in North America, Europe, or Australia, were assigned randomly to groups given 12 or 16 weeks of daclatasvir (60 mg once daily), or 24 weeks of placebo, each combined with peginterferon alfa-2a and ribavirin. Treatment was extended to 24 weeks for recipients of daclatasvir who did not meet the criteria for early virologic response. The primary end point was SVR at 24 weeks after treatment (SVR24).RESULTS: Baseline characteristics were similar among patients within each HCV genotype group. However, the 80 patients with HCV genotype 3, compared with the 71 patients with HCV genotype 2, were younger (mean age, 45 vs 53 y, respectively), and a larger proportion had cirrhosis (23% vs 1%, respectively). Among patients with HCV genotype 2 infection, an SVR24 was achieved by 83%, 83%, and 63% of those in the daclatasvir 12-week group, the daclatasvir 16-week group, or the placebo group, respectively; among patients with HCV genotype 3 infection, an SVR24 was achieved by 69%, 67%, and 59% of patients in these groups, respectively. Differences between genotypes largely were attributable to the higher frequency of post-treatment relapse among patients infected with HCV genotype 3. In both daclatasvir arms for both HCV genotypes, the lower bound of the 80% confidence interval of the difference in SVR24 rates between the daclatasvir and placebo arms was above -20%, establishing noninferiority. Safety findings were similar among groups, and were typical of those expected from peginterferon alfa and ribavirin therapy.CONCLUSIONS: Twelve or 16 weeks of treatment with daclatasvir, in combination with peginterferon alfa-2a and ribavirin, is a well tolerated and effective therapy for patients with HCV genotype 2 or 3 infections. Daclatasvir-containing regimens could reduce the duration of therapy for these patients. Clinicaltrials.gov number: NCT01257204.
AB - BACKGROUND & AIMS: Twenty-four weeks of treatment with peginterferon and ribavirin for chronic hepatitis C virus (HCV) genotype 2 or 3 infection produces a sustained virologic response (SVR) in 70%-80% of patients. We performed a randomized, double-blind, phase 2b study to assess whether adding daclatasvir, a nonstructural protein 5A (NS5A) inhibitor that is active against these genotypes, improves efficacy and shortens therapy.METHODS: Patients with HCV genotype 2 or 3 infection (n = 151), enrolled at research centers in North America, Europe, or Australia, were assigned randomly to groups given 12 or 16 weeks of daclatasvir (60 mg once daily), or 24 weeks of placebo, each combined with peginterferon alfa-2a and ribavirin. Treatment was extended to 24 weeks for recipients of daclatasvir who did not meet the criteria for early virologic response. The primary end point was SVR at 24 weeks after treatment (SVR24).RESULTS: Baseline characteristics were similar among patients within each HCV genotype group. However, the 80 patients with HCV genotype 3, compared with the 71 patients with HCV genotype 2, were younger (mean age, 45 vs 53 y, respectively), and a larger proportion had cirrhosis (23% vs 1%, respectively). Among patients with HCV genotype 2 infection, an SVR24 was achieved by 83%, 83%, and 63% of those in the daclatasvir 12-week group, the daclatasvir 16-week group, or the placebo group, respectively; among patients with HCV genotype 3 infection, an SVR24 was achieved by 69%, 67%, and 59% of patients in these groups, respectively. Differences between genotypes largely were attributable to the higher frequency of post-treatment relapse among patients infected with HCV genotype 3. In both daclatasvir arms for both HCV genotypes, the lower bound of the 80% confidence interval of the difference in SVR24 rates between the daclatasvir and placebo arms was above -20%, establishing noninferiority. Safety findings were similar among groups, and were typical of those expected from peginterferon alfa and ribavirin therapy.CONCLUSIONS: Twelve or 16 weeks of treatment with daclatasvir, in combination with peginterferon alfa-2a and ribavirin, is a well tolerated and effective therapy for patients with HCV genotype 2 or 3 infections. Daclatasvir-containing regimens could reduce the duration of therapy for these patients. Clinicaltrials.gov number: NCT01257204.
KW - Adolescent
KW - Adult
KW - Aged
KW - Antiviral Agents
KW - Double-Blind Method
KW - Drug Therapy, Combination
KW - Female
KW - Genotype
KW - Hepacivirus
KW - Hepatitis C, Chronic
KW - Humans
KW - Imidazoles
KW - Interferon-alpha
KW - Male
KW - Middle Aged
KW - Polyethylene Glycols
KW - RNA, Viral
KW - Recombinant Proteins
KW - Ribavirin
U2 - 10.1053/j.gastro.2014.10.007
DO - 10.1053/j.gastro.2014.10.007
M3 - Journal article
C2 - 25311593
SN - 0016-5085
VL - 148
SP - 355-366.e1
JO - Gastroenterology
JF - Gastroenterology
IS - 2
ER -