International Journal of Medical Sciences

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17 January 2019

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Int J Med Sci 2019; 16(2):331-336. doi:10.7150/ijms.30582

Research Paper

Correlation between genetic polymorphism of angiopoietin-2 gene and clinical aspects of rheumatoid arthritis

Chengqian Dai1#, Shu-Jui Kuo2,3#, Jin Zhao4, Lulu Jin4, Le Kang4, Lihong Wang1, Guohong Xu1, Chih-Hsin Tang2,5,6✉, Chen-Ming Su4✉

1. Department of Orthopedics, Affiliated Dongyang Hospital of Wenzhou Medical University, Dongyang, Zhejiang, China
2. School of Medicine, China Medical University, Taichung, Taiwan
3. Department of Orthopedic Surgery, China Medical University Hospital, Taichung, Taiwan
4. Department of Biomedical Sciences Laboratory, Affiliated Dongyang Hospital of Wenzhou Medical University, Dongyang, Zhejiang, China
5. Chinese Medicine Research Center, China Medical University, Taichung, Taiwan
6. Department of Biotechnology, College of Health Science, Asia University, Taichung, Taiwan
# These authors have contributed equally to this work

Abstract

The Angiopoietin-2 (Ang2) gene encodes angiogenic factor, and the polymorphisms of Ang2 gene predict risk of various human diseases. We want to investigate whether the single nucleotide polymorphisms (SNPs) of the Ang2 gene can predict the risk of rheumatoid arthritis (RA). Between 2016 and 2018, we recruited 335 RA patients and 700 control participants. Comparative genotyping for SNPs rs2442598, rs734701, rs1823375 and rs12674822 was performed. We found that when compared with the subjects with the A/A genotype of SNP rs2442598, the subjects with the T/T genotype were 1.78 times likely to develop RA. The subjects with C/C genotype of SNP rs734701 were 0.53 times likely to develop RA than the subjects with TT genotype, suggesting the protective effect. The subjects with G/G genotype of SNP rs1823375 were 1.77 times likely to develop RA than the subjects with C/C genotype. The subjects with A/C and C/C genotype of SNP rs11137037 were 1.65 and 2.04 times likely to develop RA than the subjects with A/A genotype. The subjects with G/T and T/T genotype of SNP rs12674822 were 2.42 and 2.25 times likely to develop RA than the subjects with G/G genotype. The T allele over rs734701 can lead to higher serum erythrocyte sedimentation rate level (p = 0.006). The A allele over rs11137037 was associated with longer duration between disease onset and blood sampling (p = 0.003). Our study suggested that Ang2 might be a diagnostic marker and therapeutic target for RA therapy. Therapeutic agents that directly or indirectly modulate the activity of Ang2 may be the promising modalities for RA treatment.

Keywords: Angiopoietin-2, single nucleotide polymorphisms, rheumatoid arthritis

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How to cite this article:
Dai C, Kuo SJ, Zhao J, Jin L, Kang L, Wang L, Xu G, Tang CH, Su CM. Correlation between genetic polymorphism of angiopoietin-2 gene and clinical aspects of rheumatoid arthritis. Int J Med Sci 2019; 16(2):331-336. doi:10.7150/ijms.30582. Available from http://www.medsci.org/v16p0331.htm