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Clinical characteristics of patients infected with hepatitis B virus genotypes A, B, and C.
Journal of Gastroenterology 2002 January
BACKGROUND: The aim of the present study was to evaluate the clinical characteristics at first hospital consultation, according to the genotype of hepatitis B virus (HBV), in patients with chronic liver diseases and positivity for hepatitis B surface antigen (HBsAg) in metropolitan Tokyo.
METHODS: The subjects consisted of 1077 patients with chronic liver diseases who were HBsAg-positive. HBV genotype was determined by an enzyme-linked immunosorbent assay (ELISA), using PreS2 monoclonal antibody, which is specific for HBV genotypes in the PreS2 region.
RESULTS: The proportion of patients with genotype A was 2% (20 patients), genotype, B 9% (101 patients), and genotype C, 88% (945 patients), while 11 patients (1.0%) had other genotypes, including 2 (0.2%) each with genotypes D and F, and 7 (0.6%) that were untypeable. Patients with genotype A were significantly (P = 0.049) more likely to be positive for Hepatitis B envelope antigen (HBeAg) at the first consultation compared with those with genotype B. Patients with genotype B were significantly more likely to be HBeAg-negative at the first consultation compared with those with genotype A (P = 0.049) and genotype C (P = 0.001), significantly more likely to show minimal hepatic fibrosis (P = 0.003), and least likely to develop liver cirrhosis (P = 0.005). Patients with genotype C were likely to be HBeAg-positive (P = 0.001) and to have a positive family history of HBV infection (P = 0.0002).
CONCLUSIONS: The clinical features of patients with HBV infection in metropolitan Tokyo varied depending on the HBV genotype.
METHODS: The subjects consisted of 1077 patients with chronic liver diseases who were HBsAg-positive. HBV genotype was determined by an enzyme-linked immunosorbent assay (ELISA), using PreS2 monoclonal antibody, which is specific for HBV genotypes in the PreS2 region.
RESULTS: The proportion of patients with genotype A was 2% (20 patients), genotype, B 9% (101 patients), and genotype C, 88% (945 patients), while 11 patients (1.0%) had other genotypes, including 2 (0.2%) each with genotypes D and F, and 7 (0.6%) that were untypeable. Patients with genotype A were significantly (P = 0.049) more likely to be positive for Hepatitis B envelope antigen (HBeAg) at the first consultation compared with those with genotype B. Patients with genotype B were significantly more likely to be HBeAg-negative at the first consultation compared with those with genotype A (P = 0.049) and genotype C (P = 0.001), significantly more likely to show minimal hepatic fibrosis (P = 0.003), and least likely to develop liver cirrhosis (P = 0.005). Patients with genotype C were likely to be HBeAg-positive (P = 0.001) and to have a positive family history of HBV infection (P = 0.0002).
CONCLUSIONS: The clinical features of patients with HBV infection in metropolitan Tokyo varied depending on the HBV genotype.
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