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Homocysteine levels and sustained virological response to pegylated‐interferon α2b plus ribavirin therapy for chronic hepatitis C: a prospective study

Background: Chronic hepatitis C affects about 3% of the world's population. Pegylated interferon (IFN) α plus ribavirin is the gold standard treatment. Methylenetetrahydrofolate reductase(MTHFR) is a key enzyme in the metabolism of homocysteine. MTHFR gene polymorphisms and high levels of homocysteine are associated with a high degree of steatosis and fibrosis, conditions associated with a low sustained virological response (SVR) rate.