Tumor necrosis factor- alpha promoter polymorphism at position -308 predicts response to combination therapy in hepatitis C virus infection.
retrospective_cohort · Level III
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Abstract
The G-->A transition in the tumor necrosis factor (TNF)- alpha promoter region at position -308 (TNF308.2) and -238 (TNF238.2) were determined in 141 patients with chronic hepatitis C virus (HCV) infection. Patients received combination therapy with high-dose interferon (IFN)- alpha and ribavirin for 24 weeks. A total of 100 patients (70.9%) had a sustained virologic response (SVR) after treatment. The TNF308.2 allele was independently associated with an SVR, particularly in patients with HCV genotype 1b infection and >200,000 IU of HCV RNA/mL in serum. In conclusion, the response to combination therapy with high-dose IFN- alpha and ribavirin may be associated, at least in part, with host genetic factors.
Medical subject headings
- Hepatitis C, Chronic
- Polymorphism, Genetic
- Promoter Regions, Genetic
- Tumor Necrosis Factor-alpha