Abstract:
:Although intensive efforts have been undertaken to elucidate the genetic background of immunoglobulin A nephropathy (IgAN), genetic factors associated with the pathogenesis of this disease are still not well understood. We designed a case-control association study that was based on linkage disequilibrium among single-nucleotide polymorphisms (SNPs) in the selectin gene cluster on chromosome 1q24-25, and we found two SNPs in the E-selectin gene (SELE8 and SELE13) and six SNPs in the L-selectin gene (SELL1, SELL4, SELL5, SELL6, SELL10, and SELL11) that were significantly associated with IgAN in Japanese patients. All eight SNPs were in almost complete linkage disequilibrium. SELE8 and SELL10 caused amino acid substitutions from His to Tyr and from Pro to Ser (chi2=9.02, P=.0026, odds ratio = 2.73 [95% confidence interval [CI] 1.38--5.38] for His-to-Tyr substitutions; chi2=17.4, P=.000031, odds ratio = 3.61 [95% CI 1.91--6.83] for Pro-to-Ser substitutions), and SELL1 could affect promoter activity of the L-selectin gene (chi2=19.5, P=.000010, odds ratio = 3.77 [95% CI 2.02--7.05]). The TGT haplotype at these three loci was associated significantly with IgAN (chi2=18.67, P=.000016, odds ratio = 1.88 [95% CI 1.41--2.51]). Our results suggest that these eight SNPs in selectin genes may be useful for screening populations susceptible to the IgAN phenotype that involves interstitial infiltration.
journal_name
Am J Hum Genetjournal_title
American journal of human geneticsauthors
Takei T,Iida A,Nitta K,Tanaka T,Ohnishi Y,Yamada R,Maeda S,Tsunoda T,Takeoka S,Ito K,Honda K,Uchida K,Tsuchiya K,Suzuki Y,Fujioka T,Ujiie T,Nagane Y,Miyano S,Narita I,Gejyo F,Nihei H,Nakamura Ydoi
10.1086/339077subject
Has Abstractpub_date
2002-03-01 00:00:00pages
781-6issue
3eissn
0002-9297issn
1537-6605pii
S0002-9297(07)60281-Xjournal_volume
70pub_type
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