Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 2014 Oct;44(4):860-72.
doi: 10.1183/09031936.00001914. Epub 2014 Jul 3.

Common genes underlying asthma and COPD? Genome-wide analysis on the Dutch hypothesis

Affiliations

Common genes underlying asthma and COPD? Genome-wide analysis on the Dutch hypothesis

Joanna Smolonska et al. Eur Respir J. 2014 Oct.

Abstract

Asthma and chronic obstructive pulmonary disease (COPD) are thought to share a genetic background ("Dutch hypothesis"). We investigated whether asthma and COPD have common underlying genetic factors, performing genome-wide association studies for both asthma and COPD and combining the results in meta-analyses. Three loci showed potential involvement in both diseases: chr2p24.3, chr5q23.1 and chr13q14.2, containing DDX1, COMMD10 (both participating in the nuclear factor (NF) κβ pathway) and GNG5P5, respectively. Single nucleotide polymorphisms (SNPs) rs9534578 in GNG5P5 reached genome-wide significance after first replication phase (p=9.96×10(-9)). The second replication phase, in seven independent cohorts, provided no significant replication. Expression quantitative trait loci (eQTL) analysis in blood cells and lung tissue on the top 20 associated SNPs identified two SNPs in COMMD10 that influenced gene expression. Inflammatory processes differ in asthma and COPD and are mediated by NF-κβ, which could be driven by the same underlying genes, COMMD10 and DDX1. None of the SNPs reached genome-wide significance. Our eQTL studies support a functional role for two COMMD10 SNPs, since they influence gene expression in both blood cells and lung tissue. Our findings suggest that there is either no common genetic component in asthma and COPD or, alternatively, different environmental factors, e.g. lifestyle and occupation in different countries and continents, which may have obscured the genetic common contribution.

PubMed Disclaimer

Figures

Figure 1
Figure 1
Analytic work flow
Figure 1
Figure 1
Analytic work flow
Figure 2
Figure 2
Regional association plots for DDX1, COMMD10 and GNG5P5 loci. The plots were generated using R and regional association plot script from BROAD institute
Figure 3
Figure 3
Forest plots of the three top SNPs in the meta-analysis of the asthma and COPD cohorts.
Figure 4
Figure 4
eQTLs identified for COMMD10 SNPs. Left panel: blood eQTLs, right panel: lung eQTLs. Order on x-axis is from non-risk homozygote, heterozygote and risk homozygote for all three eQTLs. Note: in lung tissue dataset, the risk homozygotes were not present.
Figure 5
Figure 5
Gene enrichment plot using DDX1 and COMMD10 genes as a query
Figure 5
Figure 5
Gene enrichment plot using DDX1 and COMMD10 genes as a query

Similar articles

Cited by

References

    1. Masoli M, Fabian D, Holt S, Beasley R. The global burden of asthma: executive summary of the GINA Dissemination Committee report. Allergy. 2004;59:469–478. - PubMed
    1. Beasley R. The Global Burden of Asthma Report, Global Initiative for Asthma (GINA) 2004
    1. Halbert RJ, Isonaka S, George D, Iqbal A. Interpreting COPD prevalence estimates: what is the true burden of disease? Chest. 2003;123:1684–1692. - PubMed
    1. Kraft M. Asthma and chronic obstructive pulmonary disease exhibit common origins in any country! Am J Respir Crit Care Med. 2006;174:238–240. - PubMed
    1. Plusa T. [Overlap syndrome--asthma and chronic obstructive pulmonary disease] Pneumonol Alergol Pol. 2011;79:351–356. - PubMed