E26 Transformation-Specific-1 (ETS1) and WDFY Family Member 4 (WDFY4) Polymorphisms in Chinese Patients with Rheumatoid Arthritis

Author： Zhang Yiqun   Bo Lin   Zhang Hui   Zhuang Chao   Liu Ruiping  

Publisher： MDPI

E-ISSN： 1422-0067|15|2|2712-2721

ISSN： 1422-0067

Source： International Journal of Molecular Sciences, Vol.15, Iss.2, 2014-02, pp. : 2712-2721

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Abstract

E26 transformation-specific-1 (ETS1) and WDFY family member 4 (WDFY4) are closely related with systemic lupus erythematosus. We hypothesized that ETS1 and WDFY4 polymorphisms may contribute to rheumatoid arthritis (RA) susceptibility. We studied ETS1 rs1128334 G/A and WDFY4 rs7097397 A/G gene polymorphisms in 329 patients with RA and 697 controls in a Chinese population. Genotyping was done using matrix-assisted laser desorption/ionization time-of-flight mass spectrometry. When the WDFY4 rs7097397 AA homozygote genotype was used as the reference group, the AG genotype was associated with a significantly increased risk for RA. In the dominant model, when the WDFY4 rs7097397 AA homozygote genotype was used as the reference group, the AG/GG genotypes were associated with a significant increased susceptibility to RA. In stratification analyses, a significantly increased risk for RA associated with the WDFY4 rs7097397 AG genotype was evident among female patients, younger patients, C-reactive protein (CRP) negative patients and both anti-cyclic citrullinated peptide antibody (ACPA) positive patients and negative patients compared with the WDFY4 rs7097397 AA genotype. These findings suggested that WDFY4 rs7097397 A/G may be associated with the risk of RA, especially among younger, female patients, CRP-negative patients and both ACPA positive and negative patients. However, our results were obtained from a moderate-sized sample, and therefore this is a preliminary conclusion. To confirm these findings, validation by a larger study from a more diverse ethnic population is needed.

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