title: [Relationship between B virus hepatitis genotypes and therapeutic efficacy in early treatment for chronic hepatitis B by using lamivudine].
abstract: OBJECTIVE
  To investigate the relationship between hepatitis B virus (HBV) genotype and therapeutic efficacy during the early phase of lamivudine treatment.
  
  
  METHODS
  Totally 595 patients with chronic hepatitis B were treated with lamivudine 100 mg/day for 12 months. HBV genotypes, contents of HBV DNA, HBeAg/anti-HBe and YMDD mutation after lamivudine treatment for 12 months were determined. The data were analyzed with SPSS software.
  
  
  RESULTS
  In 595 patients, 8 (1.4%) were genotype A; 53 (8.9%) genotype B; 360 (60.5%) genotype C; 112 (18.8%) were coinfection of genotype B and C; 14 (2.4%) of A and C; 15 (2.5%) A and B; 6 (1.0%) of A, B, and C, and remaining 27 (4.5%) were unspecified. Patients were treated with lamivudine 100 mg/day for 12 months. Genotype B with HBV DNA levels turned to be negative (HBV DNA < 0.1 ng/L) was 87.2%, genotype C was 89.51%, coinfection of genotype B and C was 93.04% (P > 0.05). HBeAg seroconversion of genotype B was 11.65%, of genotype C was 20.64%, and of coinfection of genotype B and C was 18.57% (P > 0.05). All 69 strains of YMDD mutation were detected after lamivudine treatment for 12 months, in which genotype B was in 16.98%, genotype C in 15.38%, and coinfection of genotype B and C was in 13.86% (P > 0.05).
  
  
  CONCLUSIONS
  There was no difference in HBV genotypes and the rate of development of YMDD mutations, HBeAg seroconversion, descending of HBV DNA level in Chinese patients with chronic hepatitis B.
authors.affiliation: Institute of Infectious Diseases, Beijing Ditan Hospital, Beijing 100011, China.
authors.forename: Shu-jing
authors.initials: SJ
authors.lastname: Song
authors.forename: Hui
authors.initials: H
authors.lastname: Zhuang
authors.forename: Jie
authors.initials: J
authors.lastname: Yan
authors.forename: Hong-shan
authors.initials: HS
authors.lastname: Wei
authors.forename: Zhong-ping
authors.initials: ZP
authors.lastname: He
authors.forename: Chuan
authors.initials: C
authors.lastname: Song
authors.forename: Qing-ming
authors.initials: QM
authors.lastname: Dong
authors.forename: Yuan-pu
authors.initials: YP
authors.lastname: Xiao
mesh_terms: D002681:China; D005838:Genotype; D006513:Hepatitis B e Antigens / Q000097:blood; D006515:Hepatitis B virus / Q000187:drug effects* / Q000235:genetics / Q000276:immunology; D019694:Hepatitis B, Chronic / Q000188:drug therapy* / Q000821:virology; D006801:Humans; D019259:Lamivudine / Q000627:therapeutic use*; D018894:Reverse Transcriptase Inhibitors / Q000627:therapeutic use; D016896:Treatment Outcome
chemical_list: D006513:Hepatitis B e Antigens; D018894:Reverse Transcriptase Inhibitors; D019259:Lamivudine