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Polymorphisms in the interleukin-1 (IL1) gene have been suggested to influence transcription of IL1A (interleukin-1alpha) and IL1B (interleukin-1beta) and thereby the pathophysiology of periodontitis. This case-control association study on 415 northern European Caucasian patients with aggressive periodontitis (AgP) and 874 healthy controls was conducted to examine 10 single-nucleotide polymorphisms (SNPs) in the genes of the IL1 cluster for association with IL1A, IL1B, CKAP2L (cytoskeleton-associated protein 2-like), and IL1RN (IL-1 receptor antagonist). The results do not support an association between variants in the IL1 gene cluster and AgP. This case-control study had at least 95% power to detect genuine associations with variants carrying relative risks of at least 1.5 for heterozygous carriers and 2.25 for homozygous carriers. Previous reports of an association between IL1 promoter SNPs and periodontitis might reflect subpopulation effects and have to be interpreted with care.
Pubmed ID: 18723088 RIS Download
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Software application for haplotype association analysis of unphased genotype data. It can be used both for population data (case-control) and nuclear family data. The program is optimized for haplotype frequency estimation with the EM-algorithm for many markers. FAMHAP provides a method which searches for potential genotyping errors and several tests for haplotype-based association analysis. Particular emphasis is on Monte-Carlo simulations, which are necessary in the context of haplotype association, where asymptotic theory often fails, and in the context of multiple testing problems. (entry from Genetic Analysis Software)
View all literature mentionsSoftware for cluster analysis of microarray data. Genesis is a platform independent Java package of tools to simultaneously visualize and analyze a whole set of gene expression experiments.
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