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  • Title: C1GALT1 polymorphisms are associated with Henoch-Schönlein purpura nephritis.
    Author: He X, Zhao P, Kang S, Ding Y, Luan J, Liu Z, Wu Y, Yin W.
    Journal: Pediatr Nephrol; 2012 Sep; 27(9):1505-9. PubMed ID: 22544166.
    Abstract:
    BACKGROUND: Henoch-Schönlein purpura nephritis (HSPN) is the most serious long-term complication of Henoch-Schönlein purpura and aberrant galactosylation of IgA1 plays a role in its development. However, the precise role of genetic factors contributing to the abnormal IgA1 galactosylation remains unknown. METHODS: In order to examine the effects of C1GALT1 gene encoding core 1 β1,3-galactosyltransferase, an important role in the β1,3 glycosylation of IgA1, on HSPN susceptibility, we conducted a case-control association genetic study in 269 HSP and 61 HSPN in China. Five tagging SNPs, SNP1(-734 C/T), SNP4(-465A/G), SNP6(-330 G/T), SNP7(-292 C/-), and SNP8(1365 G/A) in C1GALT1 were studied using single-locus and haplotype-based multilocus analysis. RESULTS: Our results demonstrated that 1365 G allele frequency was significantly higher in HSPN patients than in HSP patients without nephritis (0.459 vs 0.331, p = 0.0008, adjusted p' = 0.004) with an odds ratio (OR) = 1.716, 95%CI 1.151-2.560). The GG genotype of 1,365 G/A was significantly different in HSP without nephritis and HSPN (p = 0.008, adjusted p'' = 0.04). We did not observe statistically significant differences in haplotype frequencies between HSPN and HSP patients. CONCLUSIONS: In conclusion, our study suggested that the 1365 G/A polymorphism of the C1GALT1 gene may contribute to HSPN development.
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