Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease

Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints and COPDGene Investigators

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Hypoxemia is a major complication of chronic obstructive pulmonary disease (COPD) that correlateswith disease prognosis. Identifying genetic variants associated with oxygenation may provide clues for deciphering the heterogeneity in prognosis among patients with COPD. However, previous genetic studies have been restricted to investigating COPD candidate genes for associationwith hypoxemia.Toreport results fromthe first genome-wide association study (GWAS) of resting oxygen saturation (as measured by pulse oximetry [SpO2]) in subjects with COPD, we performed a GWAS of SpO2 in two large, well characterized COPD populations:COPDGene, including both thenon-Hispanicwhite(NHW) and African American (AA) groups, and Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE).We identified several suggestive loci (P < 1 × 1025) associated with SpO2 in COPDGenein theNHW(n=2810) andECLIPSE (n=1758)groups,and two loci on chromosomes 14 and 15 in the AA group (n = 820) from COPDGene achieving a level of genome-wide significance (P < 5 × 10-8). The chromosome 14 single-nucleotide polymorphism, rs6576132, located in an intergenic region, was nominally replicated (P<0.05) in the NHW group from COPDGene. The chromosome 15 single-nucleotide polymorphisms were rare in subjects of European ancestry, so the results couldnot be replicated.The chromosome15 region contains several genes, including TICRR and KIF7, and is proximal to RHCG (Rh family C glyocoprotein gene).We have identified two loci associated with resting oxygen saturation in AA subjects with COPD, and several suggestive regions in subjects of European descentwith COPD.Our study highlights the importance of investigating the genetics of complex traits in different racial groups.

Original languageEnglish (US)
Pages (from-to)678-687
Number of pages10
JournalAmerican Journal of Respiratory Cell and Molecular Biology
Volume51
Issue number5
DOIs
StatePublished - Nov 1 2014
Externally publishedYes

Fingerprint

Pulmonary diseases
Oxygenation
Chronic Obstructive Pulmonary Disease
Genes
Chromosomes
African Americans
Chromosomes, Human, Pair 15
Chromosomes, Human, Pair 14
Genome-Wide Association Study
Polymorphism
Single Nucleotide Polymorphism
Nucleotides
Oxygen
Intergenic DNA
Oximetry
Biomarkers
Genome

Keywords

  • Chronic obstructive pulmonary disease
  • Genome-wide association study
  • Hypoxemia
  • Oxygen saturation
  • Pulse oximetry

ASJC Scopus subject areas

  • Medicine(all)
  • Molecular Biology
  • Pulmonary and Respiratory Medicine
  • Clinical Biochemistry
  • Cell Biology

Cite this

Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints and COPDGene Investigators (2014). Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease. American Journal of Respiratory Cell and Molecular Biology, 51(5), 678-687. https://doi.org/10.1165/rcmb.2014-0135OC

Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease. / Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints and COPDGene Investigators.

In: American Journal of Respiratory Cell and Molecular Biology, Vol. 51, No. 5, 01.11.2014, p. 678-687.

Research output: Contribution to journalArticle

Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints and COPDGene Investigators 2014, 'Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease', American Journal of Respiratory Cell and Molecular Biology, vol. 51, no. 5, pp. 678-687. https://doi.org/10.1165/rcmb.2014-0135OC
Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints and COPDGene Investigators. Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease. American Journal of Respiratory Cell and Molecular Biology. 2014 Nov 1;51(5):678-687. https://doi.org/10.1165/rcmb.2014-0135OC
Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints and COPDGene Investigators. / Common genetic variants associated with resting oxygenation in chronic obstructive pulmonary disease. In: American Journal of Respiratory Cell and Molecular Biology. 2014 ; Vol. 51, No. 5. pp. 678-687.
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