eISSN: 1896-9151
ISSN: 1734-1922
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1/2007
vol. 3
 
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abstract:

Original paper
Study of relationship between IL-1Ra gene polymorphism and GVHD in HLA – identical sibling allogenic transplants

Mohammad Reza Nooridaloii
,
Maryam Sobhani
,
Pantea Izadi
,
Akbar Fotouhi
,
Kamran Ali Moghadam
,
Masoud Iravani
,
Mohammad Jahani
,
Babak Bahar
,
Asadollah Moosavi
,
Nima Hadiashar
,
Ardeshir Ghavamzadeh

Arch Med Sci 2007; 3, 1: 52-56
Online publish date: 2007/03/23
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Introduction: The interleukin-1 (IL-1) gene family includes three members (IL-1a, IL-1b and IL-1Ra) that mediate immune and inflammatory responses. Interleukin-1 (IL-1) is an inflammatory cytokine involved in various autoimmune and inflammatory diseases. IL-1 receptor antagonist (IL-1Ra) is the naturally occurring antagonist to IL-1a and IL-1b. A variable number tandem repeat (VNTR) polymorphism in the IL-1Ra gene has been associated with increased IL-1Ra production and affects the severity of aGVHD. Material and methods: Three hundred and fifty pairs (175 HSCT recipients and their donors) were analyzed by VNTR/PCR. Because of haematological disorders all patients were transplanted. All genotypes were screened blind to the clinical outcome of the transplants. GVHD was graded using Glucksberg criteria. Results: The influence of different alleles on incidence of aGVHD was investigated with univariate analysis. None of them showed an association with aGVHD, but possession of allele 2 in donors was associated with less severe aGVHD, although the frequency of allele 2 in our study population was low. However, aGVHD correlated with recipient age, donor age and recipient disease, particularly thalassaemia. Conclusions: No significant correlation was observed between the IL-1Ra polymorphism and incidence of aGVHD. In addition there was a powerful association between diagnosis, particularly thalassaemia, and GVHD (26 out of 30 thalassaemia patients). These findings may help to predict the risk/severity of GVHD, which may contribute to selecting strategies for treatment/prevention in thalassaemia patients.
keywords:

BMT, cytokine, genotype
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