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Abstract
Objectives: The aim of this study was to test whether orosomucoid like 3 (ORMDL3) and 17q21 variants are associated with susceptibility to ankylosing spondylitis (AS) in a Chinese population.
Method: A total of 753 unrelated AS patients and 1120 ethnically matched healthy controls were recruited. Seven single nucleotide polymorphisms (SNPs: rs7216389, rs12603332, rs12936231, rs9303277, rs11557467, rs1007654, and rs17608925), which were selected from chromosome 17q21 containing the genes ORMDL3, GSDMB, ZPBP2, and IKZF3, were genotyped by the Taqman SNP genotyping assay.
Results: Five of the SNPs (rs7216389, rs12603332, rs12936231, rs9303277, and rs11557467) were associated with AS (all p ≤ 0.01), especially in males (all p < 0.001). Of these, rs7216389, rs12603332, rs12936231, and rs11557467 were strongly associated with severity of the disease based on radiographic findings (p < 0.05).
Conclusions: Our study confirmed that variants in chromosome 17q21 are significantly associated with AS in a Chinese Han population.
Acknowledgements
We thank all the participants in the study and Changshun Shao for helping us with the manuscript. This work was supported by grants from the National Natural Science Foundation of China (30771201, 81072452).