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Association of hepatitis B genotypes with clinical profile of patients with chronic hepatitis B.

Hepatitis B virus (HBV) infection is a common cause of chronic liver disease and is responsible for HBV-related deaths due to cirrhosis and HCC. It is well recognized that viral genotypes play an important role on the outcome of HBV infection. Ten HBV genotypes have been identified and the prevalence varies geographically. A hospital-based cross-sectional study was conducted to determine the association of HBV genotypes with the clinical profile of CHB patients. PCR-RFLP was performed to identify HBV genotypes. In this study, majority (70%) of patients were males; with ages between 22 to 67 years with a mean of 42.5 years. The ALT ranged from 23 to 111 U/L (mean 72.5 U/L). HBV DNA levels varied from less than 6 to more than 110,000,000 IU/ml. Forty-seven percent of the patients had chronic active hepatitis at the time of diagnosis. Of these, 36% were HBeAg positive while 64% were HBeAg negative. Inactive HBsAg carrier was found in 53% of cases. No significant association was established between HBV genotypes and fibrosis. PCR-RFLP analysis showed that 57%, 10%, and 13% of the samples belonged to HBV/A, HBV/B, and HBV/C, respectively and the remaining 20% had non-detectable HBV genotype. HBV/D to HBV/J were not observed in this study. Taken together, the patient's clinical profile such as sex, ALT levels, HBeAg status, HBV DNA levels and liver histology were not found to be significantly associated with HBV genotypes. A large-scale longitudinal study examining multiple HBV strains are needed to determine significant correlation of clinical profile.