Search results for "Interferon"
showing 10 items of 963 documents
Interferon alfa-2c in chronic myelogenous leukemia (CML): hematologic, cytogenetic and molecular-genetic response of patients with chronic phase CML …
1990
Alpha- and gamma-interferons have been shown to actively suppress hematopoiesis in patients in the chronic phase of chronic myelogenous leukemia in vitro and in vivo. Since both interferons act through different receptors on their hematopoietic target cells, they are expected to be capable of independently inhibiting abnormal blood cell development in patients with chronic myelogenous leukemia. We have utilized recombinant human interferon alfa-2c to treate 11 patients with Philadelphia chromosome positive chronic myelogenous leukemia in chronic phase, who were resistant to previous interferon gamma therapy. Ten of the patients were evaluable for hematologic, cytogenetic and molecular-genet…
Interferon- and ribavirin-free therapy with new direct acting antivirals (DAA) for chronic hepatitis C improves vascular endothelial function.
2018
Abstract Introduction Chronic Hepatitis C virus infection (HCV) is associated with extrahepatic manifestations and an increased prevalence in cardiovascular disease. New direct acting antivirals (DAA) have revolutionized HCV treatment with high rates of sustained virological response (SVR). Recently it was demonstrated, that SVR reduces morbidity and overall mortality more than can be solely explained by hepatic effects, suggesting that treatment with DAA also affects cardiovascular disease. The aim of this pilot study was to identify possible underlying mechanisms behind the HCV-associated cardiovascular mortality reported by others. Methods and results 20 HCV patients (10 genotype GT1, 10…
Peginterferon alfa-2b plus ribavirin for naïve patients with genotype 1 chronic hepatitis C: a randomized controlled trial
2004
We assessed the effectiveness and safety of an induction dose of peginterferon alfa-2b (PEG-IFN) plus ribavirin for initial treatment of patients with genotype 1 chronic HCV infection in a randomized, controlled, multicenter trial.Three hundred and eleven naïve patients infected with genotype 1 and chronic hepatitis were randomly assigned to 48-week treatment with PEG-IFN once weekly (80-100 micrograms depending on body weight for 8 weeks, followed by 50 micrograms for the next 40 weeks), or standard interferon alfa-2b (IFN) 6 million units on alternate days, both in combination with ribavirin (1000-1200 mg/day).PEG-IFN plus ribavirin significantly increased sustained virological response (…
Combination therapy with amantadine and interferon in naı̈ve patients with chronic hepatitis C: meta-analysis of individual patient data from six cli…
2003
Abstract Background/Aims In chronic hepatitis C, clinical trials evaluating the efficacy of amantadine (AMA) and interferon (INF) compared to INF monotherapy, have produced conflicting results. We performed a meta-analysis of the individual patient's data from previous studies. Methods Nine hundred and seventy-two patients from six European centres were evaluated by means of individual patient meta-analysis, using mixed models with centres and the centre–treatment interaction fitted as random variables. Results At the end of therapy, virological responses were 38.5% (95% CI 34.1–42.8) after INF and AMA, and 29.5% (95% CI 25.5–33.6) after INF alone (P=0.003). Sustained response occurred in 1…
Early discontinuation of ribavirin in HCV-2 and HCV-3 patients responding to Peg-interferon alpha-2a and ribavirin
2008
Guidelines for the treatment of patients infected with hepatitis C virus of genotypes 2 and 3 (HCV-2 and HCV-3, respectively) recommend a 24-week course of Peg-interferon (Peg-IFN) alpha-2a combined with ribavirin, despite 50% of patients in registration trials attaining a sustained virologic response (SVR) following Peg-IFN alpha-2a monotherapy. The aim of this study was to delineate patient characteristics that might help to identify individuals likely to benefit from ribavirin discontinuation. One hundred and forty-four HCV-2- and HCV-3-infected patients initiated Peg-IFN alpha-2a (180 microg/week) and ribavirin (1000 or 1200 mg/day); those with viral clearance at week 4 were randomized …
An open-safety study of dual antiviral therapy in real-world patients with chronic hepatitis C
2010
Purpose Treatment of patients with chronic hepatitis C with alpha-interferon and ribavirin usually produces adverse events within the first 3 months. We aimed to assess safety and predictors of discontinuation or dose modification of these drugs. Methods Observational study of 312 patients with predominantly genotype 1 chronic hepatitis C treated openly along 5 years in a clinical practice setting. Results Eighty-four percent of patients experienced at least one adverse event (853 events in total, 3.3 per patient on average). Incidence rate was higher during the first 90 days and decreased thereafter (<5%). Discontinuation rates at 30 and 90 days and at end of treatment were 2, 4 and 8%, re…
Effects of IL28B rs12979860 CC Genotype on Metabolic Profile and Sustained Virologic Response in Patients With Genotype 1 Chronic Hepatitis C
2013
Patients with genotype 1 chronic hepatitis C (G1 CHC) frequently develop steatosis and insulin resistance (IR), caused by metabolic and viral factors. These accelerate the progression of liver disease and reduce the response to therapy. A sustained virologic response (SVR) to therapy in patients with G1 CHC is associated strongly with polymorphisms near the interleukin-28B (IL28B) gene, but the interaction between IL28B genotype and IR, and their combined effects on SVR, have not been defined. We tested the association between the IL28B rs12979860 single-nucleotide polymorphism and metabolic features, including IR, and evaluated their effects on SVR.We performed genotype analysis of IL28B r…
Intravenous natural beta-interferon in white patients with chronic hepatitis C who are nonresponders to alpha-interferon.
1998
Objectives: α-Interferons (α-IFN) have been shown to be effective in the treatment of chronic viral C hepatitis, but their efficacy remains unsatisfactory. Recently natural β-interferon (β-IFN) administered by intravenous infusion has been used successfully. Methods: To evaluate the efficacy and safety of intravenous β-IFN administration we treated 20 patients with histologically proven chronic hepatitis C who were nonresponders to at least two previous courses of α-IFN treatment. All patients received 6 million units (MU) of natural human fibroblast β-IFN by drip infusion, 6 times per wk for 8 wk and were followed up for 6 months after suspension of treatment. Results: Five patients (25%) …
Individualized treatment duration for hepatitis C genotype 1 patients: a randomized controlled trial
2008
It was hypothesized that in hepatitis C virus (HCV) genotype 1 patients, variable treatment duration individualized by first undetectable HCV RNA is as effective as standard 48-week treatment. Patients (n_696) received peginterferon alfa-2a, 180 mg/week, or peginterferon alfa-2b, 1.5 mg/kg/week, plus ribavirin, 1000-1200 mg/day, for 48 weeks (standard, n _237) or for 24, 48, or 72 weeks if HCV-RNA–negative at weeks 4, 8, or 12, respectively (variable, n _ 459). Sustained virologic response (SVR) was achieved in 45.1% [95% confidence interval (CI) 38.8-51.4] of the patients in the standard group and in 48.8% (CI 44.2-53.3) of the patients in the variable group (P _ 0.37). The percentages of …
Combined treatment of relapse of chronic hepatitis C with high-dose α2b interferon plus ribavirin for 6 or 12 months
2000
Abstract Background/Aims: Retreatment of relapses of chronic hepatitis C with a standard regimen of interferon plus ribavirin for 6 months obtains a sustained response in a minority of patients with high viraemia and genotype 1b . We aimed to assess whether increasing the interferon dose and prolonging the time of combined treatment may enhance the effectiveness, and also to evaluate the tolerability, and to identify the determinants of sustained response. Methods: Fifty subjects with chronic hepatitis C who had relapsed after one or more courses of α-interferon monotherapy were randomised to receive α 2 b interferon (6 MU tiw) plus ribavirin (1000–1200 mg daily) for 6 or 12 months. ALT nor…