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( W. Ray Kim ),( Eric J. Lawitz ),( Peter Ruane ),( Catherine Stedman ),( Graham Foster ),( Robert H. Hyland ),( Sarah Coogan ),( Stephanie Moody ),( Hadas Dvory-sobo ),( Steven J. Knox ),( Diana M. B 대한간학회 2016 춘·추계 학술대회 (KASL) Vol.2016 No.1
Aims: Significant advances in the treatment of chronic hepatitis C have been made with direct acting antiviral (DAA) regimens. While SVR rates may now be achieved in the majority of patients, data describing long-term virologic and clinical outcomes with these regimens are needed. Methods: We report interim data from two 3-year registry studies capturing long-term outcomes in patients with chronic hepatitis C treated with DAAs. Subjects are enrolled into two registries according to SVR status; SVR (SVR registry) versus non-SVR (Sequence registry). We determined the durability of SVR, relapse and reinfection rates. The persistence of resistance associated variants (RAVs) in treatment failures is followed. Liver disease progression is assessed by periodic clinical & labroratory evaluations. Results: 5433 patients enrolled in the SVR registry with a median (range) follow-up of 71 (0-156) weeks. 536 patients enrolled in the Sequence registry with a median (range) of follow-up of 44 (0-159) weeks. Demographic and disease characteristics are described below. In the SVR registry, at the time of data analysis, 99.7% (5414/5433) of patients have maintained SVR with 0.3% (19/5433) having emergent virus (6 relapses, 8 new infections, 5 to be confirmed). Viral emergence occurred by Week 96 in all patients. In the Sequence registry of 89 patients who received an NS5A inhibitor and had baseline sequencing data, 91.0% (81/89) had NS5A RAVs at Week 96. HCC was reported in 0.3% (16/5433) and 0.9% (5/536) of patients in the SVR and Sequence registries through Week 96 respectively. There were no significant changes in laboratory evaluations or liver disease assessments. Conclusions: SVR achieved following treatment with DAA regimens is durable. In patients failing NS5A-containing regimens, treatment- emergent NS5A RAVs persist. Rates of clinical disease progression and HCC are low. Ongoing reporting from these registry studies will be required to confirm these findings.