No evidence of major effects in several Toll-like receptor gene polymorphisms in rheumatoid arthritis.

Abstract:

INTRODUCTION:The objective was to study the potential genetic contribution of Toll-like receptor (TLR) genes in rheumatoid arthritis (RA). TLRs bind to pathogen-associated molecular patterns, and TLR genes influence both proinflammatory cytokine production and autoimmune responses. Host-pathogen interactions are involved in RA physiopathology. METHODS:We tested SNPs of five TLR genes (TLR9, TLR2, TLR6, TLR1, and TLR4) in a cohort of 100 French families with RA. Genotypes were analyzed using the transmission disequilibrium test. As TLR2, TLR6, and TLR1 are located on chromosome 4, we determined the haplotype relative risk. Analyses were performed in subgroups defined by status for rheumatoid factor, anti-cyclic citrullinated peptide autoantibodies, and erosions. RESULTS:We found no disequilibrium in allele transmission for any of the SNPs of the five TLR genes. In subgroup analyses, no associations were detected linking TLR9, TLR2, or TLR9/TLR2 to rheumatoid factor, anti-cyclic citrullinated peptide autoantibodies, or erosions. Haplotype analysis of the polymorphisms showed no haplotype associations in any of the subgroups. CONCLUSIONS:We found no evidence of major effects of TLR gene polymorphisms in RA, although we tested different TLR phenotypes. Moreover, no associations were noted with autoantibody production or erosions.

journal_name

Arthritis Res Ther

authors

Jaen O,Petit-Teixeira E,Kirsten H,Ahnert P,Semerano L,Pierlot C,Cornelis F,Boissier MC,Falgarone G,European Consortium on Rheumatoid Arthritis Families.

doi

10.1186/ar2589

subject

Has Abstract

pub_date

2009-01-01 00:00:00

pages

R5

issue

1

eissn

1478-6354

issn

1478-6362

pii

ar2589

journal_volume

11

pub_type

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