RGD Reference Report - The TNF2 allele is a risk factor to severe aplastic anemia independent of HLA-DR. - Rat Genome Database

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The TNF2 allele is a risk factor to severe aplastic anemia independent of HLA-DR.

Authors: Peng, J  Liu, C  Zhu, K  Zhu, Y  Yu, Y  Li, J  Hou, M  Chen, X  Xu, C  Zhang, M 
Citation: Peng J, etal., Hum Immunol. 2003 Sep;64(9):896-901.
RGD ID: 10449452
Pubmed: PMID:12941546   (View Abstract at PubMed)

Severe aplastic anemia (SAA) is a disease with an autoimmune component. The susceptibility to the development of SAA is strongly associated with genes in the major histocompatibility complex (MHC). The gene for tumor necrosis factor-alpha (TNF-alpha) is encoded in the MHC locus and TNF-alpha is involved in the pathogenesis of SAA. A TNF-alpha variant with a polymorphism at position -308 in its promoter region (-308A), which is designated TNF2, has been demonstrated to be linked to a number of autoimmune diseases. In this study, the TNF-alpha -308 promoter polymorphism and HLA-DRB1 alleles were analyzed in 75 SAA patients, 55 mild aplastic anemia patients (MAA), and 128 controls. In SAA the phenotype frequencies of TNF2, HLA-DR3, and -DR2 were significantly higher in comparison to controls. Stratification analysis confirmed that the TNF2 allele contributes to the susceptibility to SAA independently of HLA-DR3 or -DR2. The results indicated that TNF2 might act as an independent risk factor for SAA.

RGD Manual Disease Annotations    Click to see Annotation Detail View
TermQualifierEvidenceWithReferenceNotesSourceOriginal Reference(s)
aplastic anemia  IAGP 10449452DNA:SNP:promoter:-308G>A (human)RGD 
aplastic anemia  ISOTNF (Homo sapiens)10449452; 10449452DNA:SNP:promoter:-308G>A (human)RGD 

Objects Annotated

Genes (Rattus norvegicus)
Tnf  (tumor necrosis factor)

Genes (Mus musculus)
Tnf  (tumor necrosis factor)

Genes (Homo sapiens)
TNF  (tumor necrosis factor)


Additional Information