Human airway branch variation and chronic obstructive pulmonary disease

the MESA Lung and SPIROMICS investigators

Research output: Contribution to journalArticle


Susceptibility to chronic obstructive pulmonary disease (COPD) beyond cigarette smoking is incompletely understood, although several genetic variants associated with COPD are known to regulate airway branch development. We demonstrate that in vivo central airway branch variants are present in 26.5% of the general population, are unchanged over 10 y, and exhibit strong familial aggregation. The most common airway branch variant is associated with COPD in two cohorts (n = 5,054), with greater central airway bifurcation density, and with emphysema throughout the lung. The second most common airway branch variant is associated with COPD among smokers, with narrower airway lumens in all lobes, and with genetic polymorphisms within the FGF10 gene. We conclude that central airway branch variation, readily detected by computed tomography, is a biomarker of widely altered lung structure with a genetic basis and represents a COPD susceptibility factor.

Original languageEnglish (US)
Pages (from-to)E974-E981
JournalProceedings of the National Academy of Sciences of the United States of America
Issue number5
StatePublished - Jan 30 2018



  • Airway branching
  • Chronic obstructive pulmonary disease
  • Computed tomography
  • Fibroblast growth factor

ASJC Scopus subject areas

  • General

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