title: GvHD-associated cytokine polymorphisms do not associate with Omenn syndrome rather than T-B- SCID in patients with defects in RAG genes.
abstract: Recombinase activating genes 1/2 (RAG1/2) deficiency, critical to initiate gene rearrangement encoding lymphocyte receptors, causes T-B- severe combined immunodeficiency (SCID) and Omenn syndrome (OS), characterised by erythroderma, hepatosplenomegaly, lymphadenopathy, activated, clonal T cell expansions with restricted TCRVbeta family usage, and opportunistic infection. Many features of OS resemble graft-versus-host disease (GvHD). Frequency of GvHD-associated cytokine gene polymorphisms (CGPs) with OS was investigated to explain phenotypic differences between T-B- SCID and OS. Allele frequencies of IFNgamma T874A, IFNgamma-R1, TNFalphad microsatellites, IL-10 promoter region C592A and A1082G, IL-4 C-590T, IL-6 G-174C, IL-4R Q+576R, IFNgamma-R1 T-56C, TNFalphaRII 196 M/R single-nucleotide polymorphisms and IL-1Ra intron 1 VNTR were examined in 33 OS and 23 SCID patients. No significant differences in allele frequencies were found between the groups, and no trends identified. The mechanisms determining the OS or T-B-NK+ SCID phenotype remain to be determined.
authors.affiliation: Institute of Cellular Medicine, University of Newcastle upon Tyne, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK.
authors.forename: Iram J
authors.initials: IJ
authors.lastname: Haq
authors.forename: Laura J
authors.initials: LJ
authors.lastname: Steinberg
authors.forename: Manfred
authors.initials: M
authors.lastname: Hoenig
authors.forename: Mirjam
authors.initials: M
authors.lastname: van der Burg
authors.forename: Anna
authors.initials: A
authors.lastname: Villa
authors.forename: Andrew J
authors.initials: AJ
authors.lastname: Cant
authors.forename: Peter G
authors.initials: PG
authors.lastname: Middleton
authors.forename: Andrew R
authors.initials: AR
authors.lastname: Gennery
mesh_terms: D001402:B-Lymphocytes / Q000276:immunology; D016207:Cytokines / Q000235:genetics* / Q000276:immunology; D004268:DNA-Binding Proteins / Q000235:genetics* / Q000276:immunology; D016654:Genes, RAG-1 / Q000235:genetics / Q000276:immunology*; D006086:Graft vs Host Disease / Q000235:genetics* / Q000276:immunology; D018398:Homeodomain Proteins / Q000235:genetics* / Q000276:immunology; D006801:Humans; D009687:Nuclear Proteins / Q000235:genetics* / Q000276:immunology; D011110:Polymorphism, Genetic; D016511:Severe Combined Immunodeficiency / Q000235:genetics* / Q000276:immunology; D013601:T-Lymphocytes / Q000276:immunology
chemical_list: D016207:Cytokines; D004268:DNA-Binding Proteins; D018398:Homeodomain Proteins; D009687:Nuclear Proteins; C499311:RAG2 protein, human; C064658:RAG-1 protein