Association of-238G/A and -857C/T polymorphisms of tumor necrosis factor-alpha gene promoter region with outcomes of hepatitis B virus infection.
2006
Objectives To determine whether -238G/A and -857C/T polymorphisms of tumor necrosis factor-alpha (TNF-α) gene promoter were associated with outcomes of hepatitis B virus infection. Methods A total of 246 HBV self-limited infected subjects and 443 chronic hepatitis B (HB) patients were recruited in this case-control study. TNF-α-238G/A and -857C/T gene promoter polymorphisms were examined by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP). Results The frequency of TNF-α-238 GG (90.7%) in chronic HB group was significantly lower than that (95.1%) in self-limited group (P=0.041). The frequency of TNF-α-857 CC (79.7%) in chronic HB patients was significantly higher than that (70.9%) in self-limited infected subjects (P=0.021). Multiple logistic regression analysis revealed that both TNF-α-238GA and -857CC were independently associated with chronic HB. Conclusions TNF-α promoter variants are likely to play a substantial role in influencing the outcomes of HBV infection.
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