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  • Title: [IL-18 single nucleotide polymorphisms in hematologic malignancies with HLA matched sibling donor allogeneic hematopoietic stem cell transplantation].
    Author: Cai X, Song A, Wang H, Zhang P, Zhang G, Yang F, Wei J, Ma Q, Yan Z, Jiang E, Huang Y, Yang D, Wang M, He Y, Han M, Feng S.
    Journal: Zhonghua Xue Ye Xue Za Zhi; 2014 Mar; 35(3):215-20. PubMed ID: 24666487.
    Abstract:
    OBJECTIVE: To explore the impact of interleukin-18 (IL-18) single nucleotide polymorphisms on outcomes of hematologic malignancies with HLA-matched sibling donor hematopoietic stem cell transplantation (allo-HSCT). METHODS: Single- nucleotide polymorphisms in IL-18 promoter was detected by PCR-sequence-specific primer analysis (PCR-SSP) in 93 recipients and their HLA matched sibling donors. Hematopoietic reconstitution, incidences of graft versus host disease (GVHD) and infections, transplant related mortality (TRM), and disease free survival (DFS) were analyzed. RESULTS: In comparison with -137 G/C+C/C donor genotype, patients with -137 G/G donor genotype had shorter duration of neutrophil recovery [15(11-23) days vs 17(11-24) days, P=0.01], higher incidence of extensive chronic GVHD (20.6% vs 3.3%, P=0.029), but no difference in the interval of platelet recovery [20(11-46) days vs 20(7-38) days, P=0.844]. The incidence of extensive chronic GVHD in -607 C/C donor genotype (31.6%) was significantly higher than that (10.8%) in C/A + A/A donor genotype (P=0.024). Recipients with -607 C/C genotype also had higher incidence (33.3%) of extensive chronic GVHD than those with C/A+A/A genotype (10.7%, P=0.016). There were no differences in acute GVHD, TRM, and DFS between different genotypes. CONCLUSION: IL-18 -137 G homozygous genotype in donor facilitated neutrophil reconstitution, but increased the risk of extensive chronic GVHD in patients with allo-HSCT.
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