TY - JOUR
T1 - Meta-analysis of 20 genome-wide linkage studies evidenced new regions linked to asthma and atopy
AU - Bouzigon, Emmanuelle
AU - Forabosco, Paola
AU - Koppelman, Gerard H.
AU - Cookson, William O. C. M.
AU - Dizier, Marie-Helene
AU - Duffy, David L.
AU - Evans, David M.
AU - Ferreira, Manuel A. R.
AU - Kere, Juha
AU - Laitinen, Tarja
AU - Malerba, Giovanni
AU - Meyers, Deborah A.
AU - Moffatt, Miriam
AU - Martin, Nicholas G.
AU - Ng, Mandy Y.
AU - Pignatti, Pier Franco
AU - Wjst, Mathias
AU - Kauffmann, Francine
AU - Demenais, Florence
AU - Lewis, Cathryn M.
PY - 2010/6
Y1 - 2010/6
N2 - Asthma is caused by a heterogeneous combination of environmental and genetic factors. In the context of GA2LEN (Global Allergy and Asthma European Network), we carried out meta-analyses of almost all genome-wide linkage screens conducted to date in 20 independent populations from different ethnic origins (>= 3024 families with >= 10 027 subjects) for asthma, atopic asthma, bronchial hyper-responsiveness and five atopy-related traits (total immunoglobulin E level, positive skin test response (SPT) to at least one allergen or to House Dust Mite, quantitative score of SPT (SPTQ) and eosinophils (EOS)). We used the genome scan meta-analysis method to assess evidence for linkage within bins of traditionally 30-cM width, and explored the manner in which these results were affected by bin definition. Meta-analyses were conducted in all studies and repeated in families of European ancestry. Genome-wide evidence for linkage was detected for asthma in two regions (2p21-p14 and 6p21) in European families ascertained through two asthmatic sibs. With regard to atopy phenotypes, four regions reached genome-wide significance: 3p25.3-q24 in all families for SPT and three other regions in European families (2q32-q34 for EOS, 5q23-q33 for SPTQ and 17q12-q24 for SPT). Tests of heterogeneity showed consistent evidence of linkage of SPTQ to 3p11-3q21, whereas between-study heterogeneity was detected for asthma in 2p22-p13 and 6p21, and for atopic asthma in 1q23-q25. This large-scale meta-analysis provides an important resource of information that can be used to prioritize further fine-mapping studies and also be integrated with genome-wide association studies to increase power and better interpret the outcomes of these studies. European Journal of Human Genetics (2010) 18, 700-706; doi: 10.1038/ejhg.2009.224; published online 13 January 2010
AB - Asthma is caused by a heterogeneous combination of environmental and genetic factors. In the context of GA2LEN (Global Allergy and Asthma European Network), we carried out meta-analyses of almost all genome-wide linkage screens conducted to date in 20 independent populations from different ethnic origins (>= 3024 families with >= 10 027 subjects) for asthma, atopic asthma, bronchial hyper-responsiveness and five atopy-related traits (total immunoglobulin E level, positive skin test response (SPT) to at least one allergen or to House Dust Mite, quantitative score of SPT (SPTQ) and eosinophils (EOS)). We used the genome scan meta-analysis method to assess evidence for linkage within bins of traditionally 30-cM width, and explored the manner in which these results were affected by bin definition. Meta-analyses were conducted in all studies and repeated in families of European ancestry. Genome-wide evidence for linkage was detected for asthma in two regions (2p21-p14 and 6p21) in European families ascertained through two asthmatic sibs. With regard to atopy phenotypes, four regions reached genome-wide significance: 3p25.3-q24 in all families for SPT and three other regions in European families (2q32-q34 for EOS, 5q23-q33 for SPTQ and 17q12-q24 for SPT). Tests of heterogeneity showed consistent evidence of linkage of SPTQ to 3p11-3q21, whereas between-study heterogeneity was detected for asthma in 2p22-p13 and 6p21, and for atopic asthma in 1q23-q25. This large-scale meta-analysis provides an important resource of information that can be used to prioritize further fine-mapping studies and also be integrated with genome-wide association studies to increase power and better interpret the outcomes of these studies. European Journal of Human Genetics (2010) 18, 700-706; doi: 10.1038/ejhg.2009.224; published online 13 January 2010
U2 - 10.1038/ejhg.2009.224
DO - 10.1038/ejhg.2009.224
M3 - Article
VL - 18
SP - 700
EP - 706
JO - European Journal of Human Genetics
JF - European Journal of Human Genetics
IS - 6
ER -