alexa ADAM33 polymorphisms are associated with asthma susceptibility in a Japanese population.


Journal of Allergy & Therapy

Author(s): Noguchi E, Ohtsuki Y, Tokunaga K, YamaokaSageshima M, Ichikawa K

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BACKGROUND: Asthma is the most common chronic disorder in childhood, and asthma exacerbation is an important cause of childhood morbidity and hospitalization. Asthma is believed to be a complex disorder involving genetic and environmental factors, and several asthma susceptibility loci have been identified through genome-wide screening. A disintegrin and metalloprotease 33 (ADAM33) was the first asthma susceptibility gene to be discovered by positional cloning in 2002. OBJECTIVE: The aim of the present study was to investigate whether single-nucleotide polymorphisms (SNPs) in ADAM33 are associated with childhood asthma in the Japanese population. METHODS: Twenty-three ADAM33 SNPs were genotyped by fluorescence correlation spectroscopy with the use of DNA from 155 families (538 members) identified through children with atopic asthma. The transmission disequilibrium test (TDT) was performed for family-based association study. RESULTS: TDT revealed that minor alleles of S+1, ST+4, and T2 SNPs were over-transmitted to asthma-affected offspring (P<0.05). According to the haplotype TDT, no haplotype of ADAM33 was transmitted preferentially to asthmatic offspring. CONCLUSION: Our results confirm the involvement of ADAM33 in the development of childhood asthma among the Japanese.

This article was published in Clin Exp Allergy and referenced in Journal of Allergy & Therapy

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