A Common 16p11.2 Inversion Underlies the Joint Susceptibility to Asthma and Obesity

The prevalence of asthma and obesity is increasing worldwide, and obesity is a well-documented risk factor for asthma. The mechanisms underlying this association and parallel time trends remain largely unknown but genetic factors may be involved. Here, we report on a common ∼0.45 Mb genomic inversio...

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Veröffentlicht in:American journal of human genetics 2014-03, Vol.94 (3), p.361-372
Hauptverfasser: González, Juan R., Cáceres, Alejandro, Esko, Tonu, Cuscó, Ivon, Puig, Marta, Esnaola, Mikel, Reina, Judith, Siroux, Valerie, Bouzigon, Emmanuelle, Nadif, Rachel, Reinmaa, Eva, Milani, Lili, Bustamante, Mariona, Jarvis, Deborah, Antó, Josep M., Sunyer, Jordi, Demenais, Florence, Kogevinas, Manolis, Metspalu, Andres, Cáceres, Mario, Pérez-Jurado, Luis A.
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container_issue 3
container_start_page 361
container_title American journal of human genetics
container_volume 94
creator González, Juan R.
Cáceres, Alejandro
Esko, Tonu
Cuscó, Ivon
Puig, Marta
Esnaola, Mikel
Reina, Judith
Siroux, Valerie
Bouzigon, Emmanuelle
Nadif, Rachel
Reinmaa, Eva
Milani, Lili
Bustamante, Mariona
Jarvis, Deborah
Antó, Josep M.
Sunyer, Jordi
Demenais, Florence
Kogevinas, Manolis
Metspalu, Andres
Cáceres, Mario
Pérez-Jurado, Luis A.
description The prevalence of asthma and obesity is increasing worldwide, and obesity is a well-documented risk factor for asthma. The mechanisms underlying this association and parallel time trends remain largely unknown but genetic factors may be involved. Here, we report on a common ∼0.45 Mb genomic inversion at 16p11.2 that can be accurately genotyped via SNP array data. We show that the inversion allele protects against the joint occurrence of asthma and obesity in five large independent studies (combined sample size of 317 cases and 543 controls drawn from a total of 5,809 samples; combined OR = 0.48, p = 5.5 × 10−6). Allele frequencies show remarkable worldwide population stratification, ranging from 10% in East Africa to 49% in Northern Europe, consistent with discordant and extreme genetic drifts or adaptive selections after human migration out of Africa. Inversion alleles strongly correlate with expression levels of neighboring genes, especially TUFM (p = 3.0 × 10−40) that encodes a mitochondrial protein regulator of energy balance and inhibitor of type 1 interferon, and other candidates for asthma (IL27) and obesity (APOB48R and SH2B1). Therefore, by affecting gene expression, the ∼0.45 Mb 16p11.2 inversion provides a genetic basis for the joint susceptibility to asthma and obesity, with a population attributable risk of 39.7%. Differential mitochondrial function and basal energy balance of inversion alleles might also underlie the potential selection signature that led to their uneven distribution in world populations.
doi_str_mv 10.1016/j.ajhg.2014.01.015
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The mechanisms underlying this association and parallel time trends remain largely unknown but genetic factors may be involved. Here, we report on a common ∼0.45 Mb genomic inversion at 16p11.2 that can be accurately genotyped via SNP array data. We show that the inversion allele protects against the joint occurrence of asthma and obesity in five large independent studies (combined sample size of 317 cases and 543 controls drawn from a total of 5,809 samples; combined OR = 0.48, p = 5.5 × 10−6). Allele frequencies show remarkable worldwide population stratification, ranging from 10% in East Africa to 49% in Northern Europe, consistent with discordant and extreme genetic drifts or adaptive selections after human migration out of Africa. Inversion alleles strongly correlate with expression levels of neighboring genes, especially TUFM (p = 3.0 × 10−40) that encodes a mitochondrial protein regulator of energy balance and inhibitor of type 1 interferon, and other candidates for asthma (IL27) and obesity (APOB48R and SH2B1). Therefore, by affecting gene expression, the ∼0.45 Mb 16p11.2 inversion provides a genetic basis for the joint susceptibility to asthma and obesity, with a population attributable risk of 39.7%. 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Published by Elsevier Inc. All rights reserved.</rights><rights>Copyright Cell Press Mar 6, 2014</rights><rights>Distributed under a Creative Commons Attribution 4.0 International License</rights><rights>2014 The American Society of Human Genetics. Published by Elsevier Ltd. 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source MEDLINE; Cell Press Free Archives; Elektronische Zeitschriftenbibliothek - Frei zugängliche E-Journals; ScienceDirect Journals (5 years ago - present); PubMed Central
subjects Adult
Algorithms
Alleles
Asthma
Asthma - genetics
Chromosome Inversion
Chromosome Mapping
Chromosomes, Human, Pair 16 - genetics
Cohort Studies
Female
Gene Expression Regulation
Gene Frequency
Genes
Genetic Predisposition to Disease - genetics
Genetics
Genetics, Population
Genocide
Genome, Human
Genotype
Genotype & phenotype
Haplotypes
Human health and pathology
Humans
Life Sciences
Male
Mitochondria
Obesity
Obesity - genetics
Odds Ratio
Phenotype
Polymorphism, Single Nucleotide
Pulmonology and respiratory tract
Santé publique et épidémiologie
title A Common 16p11.2 Inversion Underlies the Joint Susceptibility to Asthma and Obesity
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