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      • Safety and Efficacy of Elbasvir/Grazoprevir in Hepatitis C Virus (HCV) GT1-and GT4 infected Participants 65 Years and Older

        ( Steven L. Flamm ),( Cheng-yuan Peng ),( Oren Shibolet ),( Ronald Nahass ),( Peggy Hwang ),( Eliav Barr ),( Michael Robertson ),( Barbara Haber ),( Eungeol Sim ) 대한간학회 2018 춘·추계 학술대회 (KASL) Vol.2018 No.1

        Aims: Safety and efficacy of HCV therapy in older individuals is of growing importance as the population with HCV infection ages. The objectives of this study were to compare the safety and efficacy of elbasvir (EBR)/grazoprevir (GZR) in participants aged ≥65 and <65 years. Methods: Safety and efficacy data from participants with HCV genotype (GT)1 or 4 infection receiving EBR (50 mg/day)/GZR (100 mg/day) for 12 weeks in 12 clinical trials were pooled and analyzed according to age (≥65 years vs <65 years). Sustained virologic response (SVR) 12 was defined as HCV RNA <lower limit of quantification 12 weeks after end of treatment (COBAS ® AmpliPrep/COBAS® Taqman® v2.0). Results: In participants aged ≥65 years (n=339), mean age was 70 years (range, 65-82) versus 49 years (range, 18-64) in those <65 years (n=2139). Demographic parameters in participants aged ≥65 years versus <65 years were noncirrhotic (85% vs 83%), treatment-naive (72% vs 85%), HCV GT1 infection (99% vs 95%), male (44% vs 61%), and white (26% vs 59%), black (12% vs 13%), and Asian (61% vs. 26%) race, respectively. SVR12 rates were 323/339 (95.3%) and 2041/2139 (95.4%) in participants with HCV GT1 or 4 infection aged ≥65 and < 65 years, respectively (Table). Rates of serious adverse events (SAEs), discontinuations due to adverse events (AEs), drug-related SAEs, and deaths were similar in both age groups (Table). AEs (occurring in >5% of either age group) in participants aged ≥ 65 versus <65 years were headache (7.1% vs 13.0%), fatigue (6.8% vs 11.3%), nasopharyngitis (6.5% vs 4.9%), nausea (4.1% vs 7.2%), and diarrhea (3.5% vs 5.8%), respectively. Conclusions: The efficacy of EBR/GZR for 12 weeks was similar in participants aged ≥65 years versus those <65 years. Treatment was well tolerated in both age groups, with low rates of SAEs, discontinuations due to AEs, drug-related SAEs, and deaths.

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