Published in:
Open Access
01-06-2012 | Research article
Analysis of the association between CD40 and CD40 ligand polymorphisms and systemic sclerosis
Authors:
María Teruel, Carmen P Simeon, Jasper Broen, Madelon C Vonk, Patricia Carreira, Maria Teresa Camps, Rosa García-Portales, Esmeralda Delgado-Frías, Maria Gallego, Gerard Espinosa, Lorenzo Beretta, Paolo Airó, Claudio Lunardi, Gabriela Riemekasten, Torsten Witte, Thomas Krieg, Alexander Kreuter, Jörg HW Distler, Nicolas Hunzelmann, Bobby P Koeleman, Alexandre E Voskuyl, Annemie J Schuerwegh, Miguel Ángel González-Gay, Timothy RDJ Radstake, Javier Martin, the Spanish Scleroderma Group
Published in:
Arthritis Research & Therapy
|
Issue 3/2012
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Abstract
Introduction
The aim of the present study was to investigate the possible role of CD40 and CD40 ligand (CD40LG) genes in the susceptibility and phenotype expression of systemic sclerosis (SSc).
Methods
In total, 2,670 SSc patients and 3,245 healthy individuals from four European populations (Spain, Germany, The Netherlands, and Italy) were included in the study. Five single-nucleotide polymorphisms (SNPs) of CD40 (rs1883832, rs4810485, rs1535045) and CD40LG (rs3092952, rs3092920) were genotyped by using a predesigned TaqMan allele-discrimination assay technology. Meta-analysis was assessed to determine whether an association exists between the genetic variants and SSc or its main clinical subtypes.
Results
No evidence of association between CD40 and CD40LG genes variants and susceptibility to SSc was observed. Similarly, no significant statistical differences were observed when SSc patients were stratified by the clinical subtypes, the serologic features, and pulmonary fibrosis.
Conclusions
Our results do not suggest an important role of CD40 and CD40LG gene polymorphisms in the susceptibility to or clinical expression of SSc.