title: HLA class II genotyping in chronic hepatitis B infection.
abstract: OBJECTIVE
  To analyze the role of HLA genotypes in persistence of chronic hepatitis B in Western India.
  
  
  METHODS
  HLA genotyping for class II-DR was done in 26 subjects having chronic hepatitis B infection (HBsAg positive) and in 100 healthy controls. Statistics were done using Halden's modification of Woolf's formula.
  
  
  RESULTS
  Significant association of chronic hepatitis B infection was found for class II-DR antigens DRB1*15XX (57.6 vs. 25%) and DRB1*11XX (23 vs. 4%). DRB1*13XX (0 vs. 19%) was negatively associated with chronic hepatitis B infection.
  
  
  CONCLUSIONS
  HLA phenotype, which varies with different regions, is one of the factors in persistence of hepatitis B infection. Our study supports negative association of DRB1*13XX to persistence of HBV. Also there may be role of DRB1*11XX and DRB1*15XX in persistence of HBV and development of chronic HBV hepatitis.
authors.affiliation: Department of Gastroenterology, Bombay Hospital and Medical Research Centre, Mumbai.
authors.forename: D N
authors.initials: DN
authors.lastname: Amarapurpar
authors.forename: N D
authors.initials: ND
authors.lastname: Patel
authors.forename: S R
authors.initials: SR
authors.lastname: Kankonkar
mesh_terms: D000328:Adult; D000483:Alleles; D005260:Female; D005787:Gene Frequency; D020022:Genetic Predisposition to Disease; D006684:HLA-DR Antigens / Q000302:isolation & purification*; D059811:HLA-DRB1 Chains; D019694:Hepatitis B, Chronic / Q000235:genetics*; D000949:Histocompatibility Antigens Class II / Q000235:genetics; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011446:Prospective Studies
chemical_list: D006684:HLA-DR Antigens; D059811:HLA-DRB1 Chains; D000949:Histocompatibility Antigens Class II