Human herpes virus 6 plasma DNA positivity after hematopoietic stem cell transplantation in children: an important risk factor for clinical outcome

被引:86
作者
de Pagter, P. J. Anne [1 ,2 ]
Schuurman, Rob [3 ]
Visscher, Henk [1 ,2 ]
de Vos, Machiel [3 ]
Bierings, Marc [1 ,2 ]
van Loon, Anton M. [3 ]
Uiterwaal, Cuno S. P. M. [4 ]
van Baawle, Debbie [1 ,2 ]
Sandeers, Elisabeth A. M. [1 ,2 ]
Boelens, JaapJan [1 ,2 ]
机构
[1] Univ Utrecht, Med Ctr, Dept Immunol Haematol, Utrecht, Netherlands
[2] Univ Utrecht, Med Ctr, BMT, Utrecht, Netherlands
[3] Univ Utrecht, Med Ctr, Dept Virol, Utrecht, Netherlands
[4] Univ Utrecht, Med Ctr, Julius Ctr Primary Hlth Care, Utrecht, Netherlands
关键词
HHV-6; viral reactivation; hematopoietic stem cell transplantation; children; GVHD; mortality;
D O I
10.1016/j.bbmt.2008.04.016
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Human herpes virus 6 (HHV6) is known to reactivate after hematopoietic stem cell transplantation (HSCT), and has been suggested to be associated with severe clinical manifestations in adults. The clinical significance in children remains unclear. We investigated the incidence of HHV6 reactivation in relation to HSCT-associated morbidity and mortality in children. Between January 2004 and May 2006, 58 pediatric patients, median age 7.6 years (range: 0.1-18.1 years), received their first allogeneic HSCT. After HSCT, HHV6, Epstein Barr Virus (EBV), cytomegalovirus (CMV), and adenovirus (AdV)-plasma loads were weekly measured by quantitative PCR. Clinical features, engraftment, graft-versus-host disease (GVHD), and HSCT-associated mortality and morbidity were monitored. HHV6 reactivations were classified in group I (no reactivation), group H (loads 1000 cp/mL) and group III (loads >1000 cp/mL). CMV, EBV, Herpes Simpex Virus, Varicella Zoster Virus, and AdV-reactivations were treated according to local guidelines. HHV6 was treated only when there was clinical suspicion of disease. Thirty-six HLA-identical and 22 HLA nonidentical grafts were transplanted of which 43 were bone marrow or peripheral blood stem cells grafts and 15 were cord blood (CB) grafts. Median follow-up of the patients was 15.5 (1-35) months. HHV6 reactivation occurred in 39 of 58 (67%) patients with 31 of 39 (80%) occurring within the first 30 days post-HSCT. In 26 of 58 (45%) patients (group 111), HHV 6 reactivation was significantly associated with higher nonrelapse mortality (P = .02), using multivatiate Cox proportional hazard models and grade 2-4 acute GVHD (P = .03) and chronic GVHD (P = .05) in a multivariate logistic regression analysis. HHV6 reactivation is very common after HSCT in children and is associated with serious transplantation-related morbidity and mortality. Although the exact role of HHV6 reactivation after HSCT has to be elucidated, early detection and initiation of therapy might be of benefit. (C) 2008 American Society for Blood and Marrow Transplantation.
引用
收藏
页码:831 / 839
页数:9
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