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Current progress in the treatment of chronic hepatitis C

World Journal of Gastroenterology 2012年第42期18卷 6060-6069页

作者： Alexandra Alexopoulou George V Papatheodoridis 2nd Department of Internal Medicine Athens University School of MedicineHippokration General Hospital of Athens115 27 AthensGreece

Over the last decade, the standard of care for the treat- ment of chronic hepatitis C has been the combination of pegylated-interferon-alfa （PEG-IFN） and ribavirin （RBV） which results in sustained virological response （SVR） rates of 75%-85% in patients with genotypes 2 or 3 but only of 40%-50% in patients with genotype 1. Cur- rently, there are rapid and continuous developments of numerous new agents against hepatitis C virus （HCV）, which are the focus of this review. Boceprevir and tela- previr, two first-generation NS3/4A HCV protease inhibi- tors, have been recently licensed in several countries around the world to be used in combination with PEG- IFN and RBV for the treatment of genotype 1 patients. Boceprevir or telaprevir based triple regimens, com- pared with the PEG-IFN/RBV combination, improve the SVR rates by 25%-31% in treatment-naTve genotype 1 patients, by 40%-64% in prior relapsers, by 33%-45% in prior partial responders and by 24%-28% in prior null responders. At the same time, the application of response-guided treatment algorithms according to the on-treatment virological response results in shortening of the total therapy duration to only 24 wk in 45%-55% of treatment-na＇ive patients. There are, however, several challenges with the use of the new triple combinations in genotype 1 patients, such as the need for immediate results of HCV RNA testing using sensitive quantitative assays, new and more frequent adverse events （anemia and dysgeusia for boceprevir; pruritus, rash and anemia for telaprevir）, new drug interactions and increasing dif- ficulties in compliance. Moreover, the SVR rates are still poor in very difficult to treat subgroups of genotype 1 patients, such as null responders with cirrhosis, while there is no benefit for patients who cannot tolerate PEG- IFN/RBV or who are infected with non-1 HCV genotype. Many newer anti-HCV agents of different classes and numerous combinations are currently under evaluation with encouraging results. Pre

关键词： Chronic hepatitis C Pegylated interferon Ribavirin Protease inhibitors, Nucleos(t)ide analogueinhibitors Non-nucleos(t)ide analogue inhibitors Hepa-titis C virus polymerase NS5A inhibitors cyclophilininhibitors

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