Association of the IKZF1 5ʹ UTR variant rs1456896 with lupus nephritis in a northern Han Chinese population
2017
Objectives: Polymorphisms of IKAROS family zinc finger 1 (IKZF1) have been found to be associated with systemic lupus erythematosus (SLE) by genome-wide association studies (GWAS). The aim of the current study was to investigate the association between IKZF1 functional variants and lupus nephritis (LN) in a northern Han Chinese population and analyse their relationship with clinical and pathological phenotypes in LN.Method: The association between IKZF1 functional variants and LN was analysed for the lead variant rs1456896 with both GWAS and expression quantitative trait loci (eQTL) top hits in 500 LN patients and 500 healthy controls. Replication was conducted in an independent cohort comprising 798 LN patients and 704 healthy controls. Using the ENCODE (Encyclopedia of DNA Elements) databases, functional annotations and differential gene expression data were evaluated.Results: A significant association between the single nuclear polymorphism (SNP) rs1456896 and susceptibility to LN was observed in the t...
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