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

Genetics & Molecular Biology

Journal of Stem Cell Research & Therapy

Author(s): Gerritsen EJ, Stam ED, Hermans J, van den Berg H, Haraldsson A,

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Abstract 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.
This article was published in Bone Marrow Transplant and referenced in Journal of Stem Cell Research & Therapy

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