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This can provide decision makers with necessary information about the cost effectiveness of therapeutic options. Treatment of non-responders is a challenge in all genotypes. Management of chronic HCV-4 hepatitis patients who do not respond to IFN therapies has only been studied in one small trial (54) on the efficacy and safety of PEG-IFN plus ribavirin with or without amantidine in 63 non-responders to conventional IFN therapy. Patients were randomized to receive either weekly PEG-IFN-��2b, 1.5?��g/kg and ribavirin 1000�C1200?mg or PEG-IFN and ribavirin as in group A, plus amantadine. Only one patient (5%) treated with dual therapy and three patients (7%) treated with triple therapy achieved SVR. Further clinical trials are necessary to investigate the management http://www.selleck.cn/products/Everolimus(RAD001).html options for this population. Although in Europe, HCV-4 is frequent among HCV- and HIV-coinfected patients, few clinical trials have evaluated the efficacy of PEG-IFN and ribavirin therapy in patients with HIV and HCV-4 coinfection (55�C57). In a case series study, SVR rates of 16.7% were obtained in genotype 4 patients receiving various IFN-based antiviral therapies (55). Overall, SVR was attained in 11.1% of patients receiving IFN-�� monotherapy, 9.1% of patients receiving IFN-�� plus ribavirin combination therapy and 22.7% of patients receiving PEG-IFN-��2b (1.5?��g/week) plus http://www.selleckchem.com/products/ch5424802.html ribavirin (800?mg/day). In this study, the overall SVR rates in genotype 4 patients (16.7%) were similar to those achieved by genotype 1 patients (11.2%) and lower than those in genotype 2/3 patients (40.4%). In another study, end of treatment response and SVR rates were lower in HIV/HCV-coinfected patients than in HCV-monoinfected patients (30 vs. 66%, P=0.06; 15 vs. 50%, P=0.06 respectively) receiving PEG-IFN-�� plus ribavirin (1000�C1200?mg/day) for 48 weeks; the difference between http://www.selleckchem.com/products/azd9291.html the cohorts was not significant in either case. The SVR rates of