title: Microsatellite scanning of the immunogenome associates MAPK14 and ELTD1 with graft-versus-host disease in hematopoietic stem cell transplantation.
abstract: Graft-versus-host disease (GVHD) is the main complication after hematopoietic stem cell transplantation (HSCT). Evidence for non-HLA gene polymorphisms as a cause of GVHD lacks consistency, which is, in part, due to methodological issues of previous candidate gene association studies and small effect size of their results, demanding for larger scale and more robust approaches. Here, non-HLA gene polymorphisms were studied on a large population (922 HSCT pairs) from a homogeneous ethnic background with selection/correction for important clinical confounders. A methodology was applied exploiting the strength of confirmatory typing in an independent study cohort. Targeting an immunogenome of 2,909 genes, an approach of pooled DNA typing of 4,321 microsatellite (MS) markers in two independent screening steps and confirmation of associated markers by further individual genotyping on combined screening cohorts was used to identify genetic susceptibility loci for moderate to severe GVHD (grades 2-4). Ten MS loci (D5S424, D6S0035i, D1S0818i, DXS0151i, D17S0219i, DXS0629i, DXS0324i, D17S0271i, D6S0330i, and D1S1335i) passed the two pooled DNA typing steps and confirmation by individual sample genotyping; two of these (D1S0818i-ELTD1 and D6S0035i-MAPK14) remain associated following application of Bonferroni's correction and multivariate analysis. The MAPK14 locus was exemplarily explored by typing of haplotype single nucleotide polymorphisms (SNP) confirming this association. This study identified several new MS susceptibility loci for GVHD that warrant further investigation. Immunogenome scanning using MS markers is a useful method for the identification of non-HLA gene loci associating with HSCT outcomes.
authors.affiliation: Division of Molecular Life Sciences, Tokai University School of Medicine, Isehara, Kanagawa, Japan. christian.harkensee@ncl.ac.uk
authors.forename: Christian
authors.initials: C
authors.lastname: Harkensee
authors.forename: Akira
authors.initials: A
authors.lastname: Oka
authors.forename: Makoto
authors.initials: M
authors.lastname: Onizuka
authors.forename: Peter G
authors.initials: PG
authors.lastname: Middleton
authors.forename: Hidetoshi
authors.initials: H
authors.lastname: Inoko
authors.forename: Hirofumi
authors.initials: H
authors.lastname: Nakaoka
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Gennery
authors.forename: Kiyoshi
authors.initials: K
authors.lastname: Ando
authors.forename: Yasuo
authors.initials: Y
authors.lastname: Morishima
mesh_terms: D000293:Adolescent; D000328:Adult; D016022:Case-Control Studies; D002648:Child; D002675:Child, Preschool; D015331:Cohort Studies; D020022:Genetic Predisposition to Disease; D006086:Graft vs Host Disease / Q000209:etiology / Q000235:genetics* / Q000276:immunology*; D006239:Haplotypes; D018380:Hematopoietic Stem Cell Transplantation / Q000009:adverse effects*; D006650:Histocompatibility Testing / Q000379:methods; D006801:Humans; D018895:Microsatellite Repeats; D048308:Mitogen-Activated Protein Kinase 14 / Q000235:genetics* / Q000276:immunology; D020641:Polymorphism, Single Nucleotide; D043562:Receptors, G-Protein-Coupled / Q000235:genetics* / Q000276:immunology; D012189:Retrospective Studies; D055815:Young Adult
chemical_list: C428324:ADGRL4 protein, human; D043562:Receptors, G-Protein-Coupled; D048308:Mitogen-Activated Protein Kinase 14