Abstract

Aim: This study aimed to investigate the associations between single nucleotide polymorphisms (SNPs) of IL-6 (-174G/C), microRNA146a (rs2910164C/G) and MALAT1 (rs619586A/G) and susceptibility to rheumatoid arthritis (RA) in Egyptians.Methods: SNPs were genotyped in 101 RA patients and 104 controls. Expression levels were evaluated either by Enzyme-linked immunosorbent assay (ELISA) for IL-6 or quantitative real-time PCR (qRT-PCR) for miR-146a and MALAT1.Results: IL-6-174 GC (OR=3.422) genotype, IL-6-174 C allele (OR=2.565), miR-146a (rs2910164) CG (OR=2.190) and MALAT1 (rs619586) AA (OR=4.125) genotypes and A allele (OR=6.122) could be considered as risk factors for RA. An increase in the expression of IL-6, miR-146a and MALAT1 was detected in RA patients, which was independent of any SNP.Conclusion: SNPs of IL-6, miR-146a and MALAT1were linked to RA predisposition in Egyptians.

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