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  • Title: NOD2 polymorphisms predict severe acute graft-versus-host and treatment-related mortality in T-cell-depleted haematopoietic stem cell transplantation.
    Author: van der Velden WJ, Blijlevens NM, Maas FM, Schaap NP, Jansen JH, van der Reijden BA, Feuth T, Dolstra H, Donnelly JP.
    Journal: Bone Marrow Transplant; 2009 Aug; 44(4):243-8. PubMed ID: 19219079.
    Abstract:
    Single nucleotide polymorphisms (SNPs) in the NOD2 gene have significant impact on both treatment-related mortality (TRM) and acute GVHD (aGVHD) in haematopoietic stem cell transplantation (HSCT). The effect of these polymorphisms when using T-cell-depleted grafts has been poorly studied. We retrospectively analysed NOD2 polymorphisms in a cohort of 85 patients and donors who received an HLA-identical sibling partially T-cell-depleted HSCT (0.5 x 10(6) CD3+ T cells per kg) following idarubicin-containing conditioning regimens. NOD2 polymorphisms were present in 14 of 85 (16.5%) of patients and 18 of 85 (21%) of donors. The risk of severe aGVHD (grade III-IV) and the 1-year TRM was significantly higher in the presence of NOD2 polymorphisms (hazard ratio (HR) 6.0, P=0.02 for severe aGVHD and HR 3.3, P=0.02 for TRM, respectively) and was most prominent in cases where patient and donor both had a polymorphism (HR 10.5, P=0.002 and HR 3.9, P=0.002). There was also a trend towards increased risk of bacteraemia due to coagulase-negative staphylococci in patients with an NOD2 polymorphism. We conclude that NOD2 polymorphism screening should be used to optimize donor selection and antimicrobial prophylaxis to reduce the occurrence of aGVHD and TRM following allogeneic HSCT.
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