title: Hepatitis B virus genotypes in chronic liver disease patients from New Delhi, India.
abstract: OBJECTIVE
  To study the Hepatitis B virus (HBV) genotypes and their effect on the progression and outcome in patients with chronic liver diseases from New Delhi, India.
  
  
  METHODS
  Sera from 100 HBV-related chronic liver disease (CLDB) cases were tested for HBV genotype using Polymerase Chain Reaction-Restriction Fragment Length Polymorphism (PCR-RFLP) and Type-specific primers-based PCR (TSP-PCR) targeting to the surface (S) gene encoding hepatitis B surface antigen.
  
  
  RESULTS
  Only genotypes A and D were present and genotype D was dominant. Genotype D was present in all CLDB patient categories. The genotype distribution for the 100 patients with CLDB was as follows: genotype A, 16/100 (16%) (7/40- 17% chronic hepatitis B (CHB); 8/47, 17%, HBV-related cirrhosis (CRB); 1/13, 7.6%, HBV-related hepatocellular carcinoma (HCCB); genotype D- 84/100 (84%) (32/40- 80% CHB; 38/47- 81%, CRB; 11/13, 85%, HCCB); genotype A+D, 3/100 (3%) (1/40- 3% CHB; 1/47- 2%, CRB; 1/13, 7.6%, HCCB); C, 0; B, 0; E, 0; F, 0; G 0, H 0; (P<0.01, genotype D vs A).
  
  
  CONCLUSIONS
  Only HBV genotypes A and D were present in patients with CLDB from New Delhi, India. Compared with genotype D, genotype A patients had no significant clinical or biochemical differences (P>0.05). Mixed infection with genotype A and D were seen in 3% of the cases. Genotype D was the dominant genotype prevalent in all patient categories.
authors.affiliation: Hepatitis Laboratory, Department of Medicine, Maulana Azad Medical College, D-II/M-2755, Netaji Nagar, New Delhi 110023, India. saketchats@yahoo.com
authors.forename: Saket
authors.initials: S
authors.lastname: Chattopadhyay
authors.forename: Bhudev Chandra
authors.initials: BC
authors.lastname: Das
authors.forename: Premashis
authors.initials: P
authors.lastname: Kar
mesh_terms: D000328:Adult; D004279:DNA, Viral / Q000235:genetics*; D018450:Disease Progression; D005260:Female; D005838:Genotype; D006514:Hepatitis B Surface Antigens / Q000235:genetics; D006515:Hepatitis B virus / Q000235:genetics*; D019694:Hepatitis B, Chronic / Q000235:genetics*; D006801:Humans; D007194:India; D008297:Male; D008875:Middle Aged; D044465:White People / Q000235:genetics
chemical_list: D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens