GvHD-associated cytokine polymorphisms do not associate with Omenn syndrome rather than T-B- SCID in patients with defects in RAG genes.
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.
Haq
Iram J
IJ
Institute of Cellular Medicine, University of Newcastle upon Tyne, Framlington Place, Newcastle upon Tyne, NE2 4HH, UK.
Steinberg
Laura J
LJ
Hoenig
Manfred
M
van der Burg
Mirjam
M
Villa
Anna
A
Cant
Andrew J
AJ
Middleton
Peter G
PG
Gennery
Andrew R
AR
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
D016207:Cytokines; D004268:DNA-Binding Proteins; D018398:Homeodomain Proteins; D009687:Nuclear Proteins; C499311:RAG2 protein, human; C064658:RAG-1 protein