Risk factors for developing EBV-related B cell lymphoproliferative disorders (BLPD) after non-HLA-identical BMT in children.

Autor: Gerritsen EJ; Department of Paediatrics, Leiden University Hospital, The Netherlands., Stam ED, Hermans J, van den Berg H, Haraldsson A, van Tol MJ, van den Bergh RL, Waaijer JL, Kroes AC, Kluin PM, Vossen JM
Jazyk: angličtina
Zdroj: Bone marrow transplantation [Bone Marrow Transplant] 1996 Aug; Vol. 18 (2), pp. 377-82.
Abstrakt: B cell lymphoproliferative disorders (BLPD) are relatively frequent after genotypically non-HLA-identical BMT. We performed univariate analysis to study which BMT-related variables were associated with an increased risk of developing BLPD. Sixty-five recipients of other than genotypically HLA-identical BM grafts were included in the study. Seventy-seven recipients of genotypically HLA-identical BM grafts served as a comparison group. BLPD occurred in nine of 65 children after non-HLA-identical BMT (14%) and in none of the 77 children after HLA-identical BMT (0%). In all cases, BLPD was proven to be EBV-related. Our data suggest that the combined use of Campath 1G and anti-LFA1 was associated with an increased risk of developing BLPD, particularly children who had received a T cell-depleted BM graft, using albumen density gradient sedimentation followed by E-rosetting, and who were conditioned with Ara-C, CY and TBL. In addition, T cell numbers below 50/microliters at 1 month and below 100/microliters at 2 months after BMT, respectively, were associated with an increased risk of developing BLPD. Longitudinal determination of T cell numbers after non-HLA-identical BMT is a simple method for identifying patients at risk of developing BLPD. In addition to monitoring levels of circulating EBV-infected lymphocytes, monitoring T cell numbers may allow early intervention to prevent progression of BLPD.
Databáze: MEDLINE