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Assessment of hepatitis B surface antibody in children after allogeneic peripheral blood stem cell transplantation and impact of donor/recipient immunity on hepatitis B surface antibody disappearance
  • +7
  • Qing Yuan,
  • Fen Zhou,
  • Hua Zhang,
  • Jian Wang,
  • An Zhang,
  • Qing Cao,
  • Wen Chen,
  • YI Fei,
  • Chang Luo,
  • Yi Gao
Qing Yuan
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine

Corresponding Author:[email protected]

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Fen Zhou
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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Hua Zhang
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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Jian Wang
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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An Zhang
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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Qing Cao
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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Wen Chen
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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YI Fei
Center for Disease Control and Prevention of Pudong New District
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Chang Luo
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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Yi Gao
Shanghai Childrens Medical Center Affiliated to Shanghai Jiaotong University School of Medicine
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Abstract

After allogeneic peripheral blood stem cell transplantation (PBSCT), children are at high risk of hepatitis B virus (HBV) infection because of the potential loss of HBV immunity. The factors which can affect it are not fully understand. This study aimed to assess the probability of hepatitis B surface antibody (HBsAb) disappearance after PBSCT and to evaluate the impact of donor and recipient immunity on HBsAb disappearance. A total of 110 patients who underwent PBSCT between January 2016 and December 2018 and their paired donors were retrospectively enrolled in this study. Before transplantation, 87 (79.1%) patients were HBsAb seropositive, and 23 (20.9%) were HBsAb seronegative. Fifty-five (63.2%) patients with protective HBsAb titers before PBSCT lost their HBV immunity within one year after transplantation. Univariate analysis showed that the low recipient pretransplant HBsAb titer, antithymocyte globulin (ATG) administration, corticosteroid administration and graft-versus-host disease (GVHD) were significant risk factors for HBsAb disappearance (P<0.05). Multivariate analysis showed that only recipient pretransplant HBsAb titers lower than 207.5 IU/L (P=0.022, hazard ratio (HR): 1.925, 95% confidence interval (CI): 1.101-3.367) and the presence of GVHD (P=0.033, HR=1.921, 95% CI: 1.056-3.495) were risk factors for HBsAb disappearance one year after HSCT. In conclusion, most recipients lost previously acquired immunity to HBV after PBSCT. A high titer of HBsAb in the recipient before transplantation had a protective effect against posttransplant HBsAb disappearance, but the presence of donor immunity did not significantly influence the maintenance of recipient immunity to HBV.