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Clin Rheumatol. 2015 Jun;34(6):1059-64. doi: 10.1007/s10067-015-2877-2. Epub 2015 Jan 30.

Lack of association between interleukin-10, transforming growth factor-beta gene polymorphisms and juvenile-onset systemic lupus erythematosus.

Author information

1
Research Center for Immunodeficiencies, Children's Medical Center, Tehran University of Medical Sciences, Dr Qarib St, Keshavarz Blvd, Tehran, 14194, Iran.

Abstract

As abundant types of genetic predisposition and environmental factors seem to be associated with the development of juvenile-onset systemic lupus erythematosus (JSLE), we investigated the gene polymorphisms of two anti-inflammatory cytokines, including interleukin-10 (IL-10) and transforming growth factor-beta (TGF-β), which were previously found to be associated with SLE in adults, in a group of patients with JSLE. We studied a group of 59 Iranian patients with JSLE in comparison with 140 healthy controls and assessed the frequency of alleles, genotypes, and haplotypes of IL-10 and TGF-β single-nucleotide polymorphisms (SNPs) using polymerase chain reaction with sequence-specific primers method. The CA genotype was significantly more frequent at position -592 in IL-10 in patients with juvenile-onset systemic lupus erythematosus than in the controls (P = 0.01). Genotype CC was detected at the same position in 32.7 % of the patients; this frequency was significantly lower than the frequency of 50.7 % recorded in the healthy controls (P = 0.03). The TC haplotype of TGF-β (codon 10, codon 25) was significantly more frequent in the patients with juvenile-onset systemic lupus erythematosus than in the healthy controls (P = 0.02). Nevertheless, these significant associations disappear after Bonferroni correction. Our findings suggest that IL-10 (-1082, -819, -592) and TGF-β (codon 10, codon 25) gene variants may not be associated with the development of JSLE in Iranian population.

PMID:
25633651
DOI:
10.1007/s10067-015-2877-2
[Indexed for MEDLINE]

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