| Literature DB >> 31455667 |
Ezgi Karaesmen1, Theresa Hahn2, Alexander James Dile3, Abbas A Rizvi1, Junke Wang1, Tao Wang4,5, Michael D Haagenson6, Leah Preus1, Qianqian Zhu7, Qian Liu7, Li Yan7, Song Liu7, Christopher A Haiman8, Daniel Stram8, Loreall Pooler8, Xin Sheng8, David Van Den Berg8, Guy Brock9, Amy Webb9, Philip L McCarthy2, Marcelo C Pasquini4, Stephen R Spellman6, Stephanie J Lee10, Sophie Paczesny3, Lara E Sucheston-Campbell1,11.
Abstract
Graft-versus-host disease (GVHD) and infections are the 2 main causes of death without relapse after allogeneic hematopoietic cell transplantation (HCT). Elevated soluble serum simulation-2 (sST2), the product of IL1RL1 in plasma/serum post-HCT, is a validated GVHD biomarker. Hundreds of SNPs at 2q12.1 have been shown to be strongly associated with sST2 concentrations in healthy populations. We therefore hypothesized that the donor genetic variants in IL1RL1 correlate with sST2 protein levels associated with patient survival outcomes after HCT. We used DISCOVeRY-BMT (Determining the Influence of Susceptibility Conveying Variants Related to 1-Year Mortality after Blood and Marrow Transplantation), a genomic study of >3000 donor-recipient pairs, to inform our hypothesis. We first measured pre-HCT plasma/serum sST2 levels in a subset of DISCOVeRY-BMT donors (n = 757) and tested the association of donor sST2 levels with donor single nucleotide polymorphisms (SNPs) in the 2q12.1 region. Donor SNPs associated with sST2 levels were then tested for association with recipient death caused by acute GVHD (aGVHD)-, infection-, and transplant-related mortality in cohorts 1 and 2. Meta-analyses of cohorts 1 and 2 were performed using fixed-effects inverse variance weighting, and P values were corrected for multiple comparisons. Donor risk alleles in rs22441131 (P meta = .00026) and rs2310241 (P meta = .00033) increased the cumulative incidence of aGVHD death up to fourfold and were associated with high sST2 levels. Donor risk alleles at rs4851601 (P meta = 9.7 × 10-7), rs13019803 (P meta = 8.9 × 10-6), and rs13015714 (P meta = 5.3 × 10-4) increased cumulative incidence of infection death to almost sevenfold and were associated with low sST2 levels. These functional variants are biomarkers of infection or aGVHD death and could facilitate donor selection, prophylaxis, and a conditioning regimen to reduce post-HCT mortality.Entities:
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Year: 2019 PMID： 31455667 PMCID： PMC6712530 DOI： 10.1182/bloodadvances.2019000075
Source DB: PubMed Journal: Blood Adv ISSN： 2473-9529