Objective To investigate the correlations of homocysteine(HCY), methylenetetrahydrofolate reductase(MTHFR) and folate and their influence on the outcome of patients affected by hepatitis B virus(HBV). Methods Ninety patients with HBV-related liver diseases were enrolled, included 30 self-limited infectors, 15 males and 15 females, which were aged 37- 66 years old with a mean age of 52.90; 30 HBV-induced liver cirrhosis, 15 males and 15 females, which were aged 36- 73 years old with a mean age of 54.87; and ...