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Variants of DENND1B associated with asthma in children Sleiman PM; Flory J; Imielinski M; Bradfield JP; Annaiah K; Willis-Owen SA; Wang K; Rafaels NM; Michel S; Bonnelykke K; Zhang H; Kim CE; Frackelton EC; Glessner JT; Hou C; Otieno FG; Santa E; Thomas K; Smith RM; Glaberson WR; Garris M; Chiavacci RM; Beaty TH; Ruczinski I; Orange JS; Allen J; Spergel JM; Grundmeier R; Mathias RA; Christie JD; von Mutius E; Cookson WO; Kabesch M; Moffatt MF; Grunstein MM; Barnes KC; Devoto M; Magnusson M; Li H; Grant SF; Bisgaard H; Hakonarson HN Engl J Med 2010[Jan]; 362 (1): 36-44BACKGROUND: Asthma is a complex disease that has genetic and environmental causes. The genetic factors associated with susceptibility to asthma remain largely unknown. METHODS: We carried out a genomewide association study involving children with asthma. The sample included 793 North American children of European ancestry with persistent asthma who required daily inhaled glucocorticoid therapy and 1988 matched controls (the discovery set). We also tested for genomewide association in an independent cohort of 917 persons of European ancestry who had asthma and 1546 matched controls (the replication set). Finally, we tested for an association between 20 single-nucleotide polymorphisms (SNPs) at chromosome 1q31 and asthma in 1667 North American children of African ancestry who had asthma and 2045 ancestrally matched controls. RESULTS: In our meta-analysis of all samples from persons of European ancestry, we observed an association, with genomewide significance, between asthma and SNPs at the previously reported locus on 17q21 and an additional eight SNPs at a novel locus on 1q31. The SNP most strongly associated with asthma was rs2786098 (P=8.55x10(-9)). We observed replication of the association of asthma with SNP rs2786098 in the independent series of persons of European ancestry (combined P=9.3x10(-11)). The alternative allele of each of the eight SNPs on chromosome 1q31 was strongly associated with asthma in the children of African ancestry (P=1.6x10(-13) for the comparison across all samples). The 1q31 locus contains the 1q31 locus contains DENND1B, a gene expressed by natural killer cells and dendritic cells. DENND1B protein is predicted to interact with the tumor necrosis factor alpha receptor [corrected]. CONCLUSIONS: We have identified a locus containing DENND1B on chromosome 1q31.3 that is associated with susceptibility to asthma.|*Chromosomes, Human, Pair 1[MESH]|*Genetic Predisposition to Disease[MESH]|*Genome-Wide Association Study[MESH]|*Polymorphism, Single Nucleotide[MESH]|Asthma/*genetics[MESH]|Black People/genetics[MESH]|Case-Control Studies[MESH]|Child[MESH]|Chromosomes, Human, Pair 17[MESH]|Death Domain Receptor Signaling Adaptor Proteins/*genetics[MESH]|Female[MESH]|Guanine Nucleotide Exchange Factors/*genetics[MESH]|Humans[MESH]|Male[MESH]|Meta-Analysis as Topic[MESH]|North America[MESH]|Odds Ratio[MESH]|Receptors, Tumor Necrosis Factor/metabolism[MESH]|White People/*genetics[MESH] |
