title: Sustained HBeAg and HBsAg loss after long-term follow-up of HBeAg-positive patients treated with peginterferon alpha-2b.
abstract: OBJECTIVE
  The aim of this study was to evaluate the long-term sustainability of response in patients with hepatitis B e antigen (HBeAg)-positive chronic hepatitis B treated with pegylated interferon (PEG-IFN) alpha-2b alone or in combination with lamivudine.
  
  
  METHODS
  All 266 patients enrolled in the HBV99-01 study were offered participation in a long-term follow-up (LTFU) study. Patients were treated with PEG-IFN alpha-2b (100 mug/wk) alone or in combination with lamivudine (100 mg/day) for 52 weeks. Initial response was defined as HBeAg negativity at 26 weeks posttreatment. For the LTFU study, patients had one additional visit after the initial study (mean interval, 3.0 +/- 0.8 years).
  
  
  RESULTS
  Of 266 patients enrolled in the initial study, 172 (65%) participated in the LTFU study. At LTFU, HBeAg and hepatitis B surface antigen (HBsAg) negativity were observed in 37% and 11% of 172 patients, respectively. Sixty-four patients were classified as initial responders and 108 as nonresponders. Among the initial responders, sustained HBeAg negativity and HBsAg loss were observed in 81% and 30%, respectively. Significantly higher rates of HBeAg negativity were observed in genotype A-infected initial responders compared with those with genotype non-A (96% vs 76%; P = .06) as well as HBsAg loss (58% vs 11%; P < .001).
  
  
  CONCLUSIONS
  HBeAg loss after treatment with PEG-IFN alpha-2b alone or in combination with lamivudine is sustained in the majority of patients and is associated with a high likelihood of HBsAg loss, particularly in genotype A-infected patients. Therefore, PEG-IFN alpha-2b remains an important treatment option in this era of nucleos(t)ide analogue therapy.
authors.affiliation: Department of Gastroenterology and Hepatology, Erasmus MC University Medical Center Rotterdam, Rotterdam, The Netherlands.
authors.forename: Erik H C J
authors.initials: EH
authors.lastname: Buster
authors.forename: Hajo J
authors.initials: HJ
authors.lastname: Flink
authors.forename: Yilmaz
authors.initials: Y
authors.lastname: Cakaloglu
authors.forename: Krzysztof
authors.initials: K
authors.lastname: Simon
authors.forename: Jörg
authors.initials: J
authors.lastname: Trojan
authors.forename: Fehmi
authors.initials: F
authors.lastname: Tabak
authors.forename: Thomas M K
authors.initials: TM
authors.lastname: So
authors.forename: S Victor
authors.initials: SV
authors.lastname: Feinman
authors.forename: Tomasz
authors.initials: T
authors.lastname: Mach
authors.forename: Ulus S
authors.initials: US
authors.lastname: Akarca
authors.forename: Martin
authors.initials: M
authors.lastname: Schutten
authors.forename: Wanda
authors.initials: W
authors.lastname: Tielemans
authors.forename: Anneke J
authors.initials: AJ
authors.lastname: van Vuuren
authors.forename: Bettina E
authors.initials: BE
authors.lastname: Hansen
authors.forename: Harry L A
authors.initials: HL
authors.lastname: Janssen
mesh_terms: D000328:Adult; D000410:Alanine Transaminase / Q000097:blood; D000998:Antiviral Agents / Q000627:therapeutic use*; D002170:Canada; D002681:China; D004279:DNA, Viral / Q000097:blood; D004359:Drug Therapy, Combination; D005060:Europe; D005260:Female; D005838:Genotype; D006514:Hepatitis B Surface Antigens / Q000097:blood*; D006513:Hepatitis B e Antigens / Q000097:blood*; D006515:Hepatitis B virus / Q000235:genetics / Q000276:immunology*; D019694:Hepatitis B, Chronic / Q000175:diagnosis / Q000188:drug therapy*; D006801:Humans; D000077190:Interferon alpha-2; D016898:Interferon-alpha / Q000627:therapeutic use*; D019259:Lamivudine / Q000627:therapeutic use*; D008297:Male; D008875:Middle Aged; D009154:Mutation; D011092:Polyethylene Glycols; D011401:Promoter Regions, Genetic; D016016:Proportional Hazards Models; D011994:Recombinant Proteins; D012008:Recurrence; D018570:Risk Assessment; D012307:Risk Factors; D013997:Time Factors; D016896:Treatment Outcome; D014758:Viral Core Proteins / Q000235:genetics
chemical_list: D000998:Antiviral Agents; D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens; D006513:Hepatitis B e Antigens; D000077190:Interferon alpha-2; D016898:Interferon-alpha; D011994:Recombinant Proteins; D014758:Viral Core Proteins; D019259:Lamivudine; D011092:Polyethylene Glycols; D000410:Alanine Transaminase; C417083:peginterferon alfa-2b