title: High hepatitis B virus (HBV) DNA viral load as the most important risk factor for HBV reactivation in patients positive for HBV surface antigen undergoing autologous hematopoietic cell transplantation.
abstract: The risk factors for hepatitis due to hepatitis B virus (HBV) reactivation in patients positive for hepatitis B surface antigen (HBsAg) treated with autologous hematopoietic cell transplantation (HCT) are unknown. We evaluated 137 consecutive patients (23 positive for HBsAg, 37 positive for hepatitis B surface antibody, and 77 negative for HBV) who underwent HCT. Serial serum ALT were measured before transplant and after transplant at 1 to 4 weekly intervals for the first year and then at 2 to 12 weekly intervals thereafter. Before HCT, basic core promoter (T(1762)/A(1764)) and precore (A(1896)) HBV variants were determined in HBsAg-positive and HBV DNA-positive (by polymerase chain reaction assay) patients by direct sequencing and serum HBV DNA quantitation using the Digene Hybrid Capture II assay. Cox proportional hazards analysis was used to assess the association between pretransplantation HBV virologic and host factors and occurrence of hepatitis due to HBV reactivation. After HCT, hepatitis due to HBV reactivation was more common in HBsAg-positive patients than in HBsAg-negative patients (hazard ratio, 33.3; 95% confidence interval [CI], 7.35-142.86; P <.0001). HBsAg-positive patients with detectable serum HBV DNA before HCT (on Digene assay) had a significantly higher risk of hepatitis due to HBV reactivation than HBsAg-positive patients with no detectable serum HBV DNA (adjusted hazard ratio, 9.35; 95% CI, 1.65-52.6; P =.012). Thus, we found that hepatitis due to HBV reactivation is common in HBsAg-positive patients undergoing autologous HCT. A high HBV DNA level (>10(5) copies/mL) was the most important risk factor for HBV reactivation, and its lowering by administration of nucleoside analogues before transplantation should be considered.
authors.affiliation: Division of Gastroenterology and Hepatology, University Department of Medicine, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong SAR, People's Republic of China.
authors.forename: George K K
authors.initials: GK
authors.lastname: Lau
authors.forename: Yu-hung
authors.initials: YH
authors.lastname: Leung
authors.forename: Daniel Y T
authors.initials: DY
authors.lastname: Fong
authors.forename: Wing-yan
authors.initials: WY
authors.lastname: Au
authors.forename: Yok-lam
authors.initials: YL
authors.lastname: Kwong
authors.forename: Albert
authors.initials: A
authors.lastname: Lie
authors.forename: Ji-lin
authors.initials: JL
authors.lastname: Hou
authors.forename: Yu-mei
authors.initials: YM
authors.lastname: Wen
authors.forename: Amin
authors.initials: A
authors.lastname: Nanj
authors.forename: Raymond
authors.initials: R
authors.lastname: Liang
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D002675:Child, Preschool; D017931:DNA Primers; D004279:DNA, Viral / Q000097:blood*; D005260:Female; D018380:Hematopoietic Stem Cell Transplantation; D006509:Hepatitis B / Q000401:mortality / Q000628:therapy* / Q000821:virology; D006514:Hepatitis B Surface Antigens / Q000097:blood*; D006515:Hepatitis B virus / Q000254:growth & development*; D006801:Humans; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D016016:Proportional Hazards Models; D012189:Retrospective Studies; D015996:Survival Rate; D019562:Viral Load; D014775:Virus Activation
chemical_list: D017931:DNA Primers; D004279:DNA, Viral; D006514:Hepatitis B Surface Antigens