[Study on the association between RANTES-403G/A as well as -28C/G gene polymorphism and their susceptibility to the hepatitis B virus infections in Dong and Han ethnicities in Guizhou, China].

Objective: To investigate the association between both regulated upon activation normal T cell expressed and secreted (RANTES) -403G/A, -28C/G gene polymorphism and the susceptibilities to hepatitis B virus (HBV) infection, among people with Dong and Han ethnicities, in Guizhou.

Methods: A total of 229 individuals with HBV persistence infection, 161 HBV clearanced patients and another 200 controls were recruited to conduct a case-control study among residents with Dong or Han ethnicities. Allelic frequencies of both RANTES-403G/A and -28C/G were identified by TaqMan-MGB probe.

Results: Both RANTES-403G/A and -28C/G polymorphism in the HBV-persistent group, when compared to the HBV-clearances group, no significant difference was found (P > 0.05).

Results: from the univariate analysis showed that subjects carrying -403AG and -28GG genotype had higher risk on the susceptibility to HBV persistence infection. The distributions of RANTES-28C/G gene polymorphism between Dong minority and Han ethnicities regarding HBV persistence showed statistically significant difference (P < 0.05). There was no difference on the distributions of RANTES-403G/A gene polymorphism between Dong minority and Han ethnicities.

Conclusion: Patients that carrying both RANTES-403AG and -28GG genotype had higher risk on the persistence to HBV, while RANTES-403A had contributed to the clearance of HBV infection.