Approximately one third of hepatitis C virus (HCV) genotype 1 patients achieved a sustained virological response (SVR) after 24 weeks of treatment with peginterferon α-2a (40 kd) plus ribavirin in a randomized, multi...Approximately one third of hepatitis C virus (HCV) genotype 1 patients achieved a sustained virological response (SVR) after 24 weeks of treatment with peginterferon α-2a (40 kd) plus ribavirin in a randomized, multinational trial. We aimed to identify factors associated with a rapid virological response (RVR) at week 4 (HCV RNA < 50 IU/mL) and a SVR (HCV RNA < 50 IU/mL at the end of follow-up) in these patients. Stepwise multiple logistic regression analysis was used to explore the prognostic factors for a RVR and SVR in genotype 1 patients treated for 24 weeks. Fifty-one of 216 (24%) genotype 1 patients in the 24-week treatment groups had a RVR. SVR rates were considerably higher in patients without a RVR (89%vs. 19%, respectively). Patients with a baseline HCV RNA of less than 200,000 IU/mL (OR 9.7, 95%CI 4.2-22.5; P < .0001) or 200,000-600,000 IU/mL (OR 3.6, 95%CI 1.5-9.1; P = .0057) were more likely to achieve a RVR than those with HCV RNA greater than 600,000 IU/mL. HCV subtype (1b vs. 1a) was also independently associated with RVR (OR 1.8, 95%CI 0.9-3.7; P = .0954). RVR (OR 23.7 vs. no RVR, 95%CI 9.1-61.7) and baseline HCV RNA less than 200,000 IU/mL (OR 2.7 vs. >600,000 IU/mL, 95%CI 1.1-6.3; P < .026) were significant and independent predictors of SVR in patients treated for 24 weeks. In conclusion, patients infected with HCV genotype 1 and treated with peginterferon α-2a/ ribavirin sustained a RVR 24%of the time. This portends an 89%probability of a SVR after 24 weeks of treatment.展开更多
文摘Approximately one third of hepatitis C virus (HCV) genotype 1 patients achieved a sustained virological response (SVR) after 24 weeks of treatment with peginterferon α-2a (40 kd) plus ribavirin in a randomized, multinational trial. We aimed to identify factors associated with a rapid virological response (RVR) at week 4 (HCV RNA < 50 IU/mL) and a SVR (HCV RNA < 50 IU/mL at the end of follow-up) in these patients. Stepwise multiple logistic regression analysis was used to explore the prognostic factors for a RVR and SVR in genotype 1 patients treated for 24 weeks. Fifty-one of 216 (24%) genotype 1 patients in the 24-week treatment groups had a RVR. SVR rates were considerably higher in patients without a RVR (89%vs. 19%, respectively). Patients with a baseline HCV RNA of less than 200,000 IU/mL (OR 9.7, 95%CI 4.2-22.5; P < .0001) or 200,000-600,000 IU/mL (OR 3.6, 95%CI 1.5-9.1; P = .0057) were more likely to achieve a RVR than those with HCV RNA greater than 600,000 IU/mL. HCV subtype (1b vs. 1a) was also independently associated with RVR (OR 1.8, 95%CI 0.9-3.7; P = .0954). RVR (OR 23.7 vs. no RVR, 95%CI 9.1-61.7) and baseline HCV RNA less than 200,000 IU/mL (OR 2.7 vs. >600,000 IU/mL, 95%CI 1.1-6.3; P < .026) were significant and independent predictors of SVR in patients treated for 24 weeks. In conclusion, patients infected with HCV genotype 1 and treated with peginterferon α-2a/ ribavirin sustained a RVR 24%of the time. This portends an 89%probability of a SVR after 24 weeks of treatment.
