MUC5B promoter polymorphism and interstitial lung abnormalities.

Abstract

BACKGROUND:

A common promoter polymorphism (rs35705950) in MUC5B, the gene encoding mucin 5B, is associated with idiopathic pulmonary fibrosis. It is not known whether this polymorphism is associated with interstitial lung disease in the general population.

METHODS:

We performed a blinded assessment of interstitial lung abnormalities detected in 2633 participants in the Framingham Heart Study by means of volumetric chest computed tomography (CT). We evaluated the relationship between the abnormalities and the genotype at the rs35705950 locus.

RESULTS:

Of the 2633 chest CT scans that were evaluated, interstitial lung abnormalities were present in 177 (7%). Participants with such abnormalities were more likely to have shortness of breath and chronic cough and reduced measures of total lung and diffusion capacity, as compared with participants without such abnormalities. After adjustment for covariates, for each copy of the minor rs35705950 allele, the odds of interstitial lung abnormalities were 2.8 times greater (95% confidence interval [CI], 2.0 to 3.9; P<0.001), and the odds of definite CT evidence of pulmonary fibrosis were 6.3 times greater (95% CI, 3.1 to 12.7; P<0.001). Although the evidence of an association between the MUC5B genotype and interstitial lung abnormalities was greater among participants who were older than 50 years of age, a history of cigarette smoking did not appear to influence the association.

CONCLUSIONS:

The MUC5B promoter polymorphism was found to be associated with interstitial lung disease in the general population. Although this association was more apparent in older persons, it did not appear to be influenced by cigarette smoking. (Funded by the National Institutes of Health and others; ClinicalTrials.gov number, NCT00005121.).

• Authors: Gary M Hunninghake, Hiroto Hatabu, Yuka Okajima, Wei Gao, Josée Dupuis, Jeanne C Latourelle, Mizuki Nishino, Tetsuro Araki, Oscar E Zazueta, Sila Kurugol, James C Ross, Raúl San José Estépar, Elissa Murphy, Mark P Steele, James E Loyd, Marvin I Schwarz, Tasha E Fingerlin, Ivan O Rosas, George R Washko, George T O'Connor, David A Schwartz
• Journal: The New England journal of medicine (N Engl J Med) Vol. 368 Issue 23 Pg. 2192-200 (Jun 06 2013) ISSN: 1533-4406 [Electronic] United States
• PMID: 23692170 (Publication Type: Journal Article, Research Support, N.I.H., Extramural, Research Support, U.S. Gov't, Non-P.H.S.)

Chemical References

• MUC5B protein, human
• Mucin-5B

Topics

• Aged
• Female
• Genotype
• Humans
• Longitudinal Studies
• Lung (diagnostic imaging)
• Lung Diseases, Interstitial (diagnostic imaging, genetics, physiopathology)
• Male
• Middle Aged
• Mucin-5B (genetics)
• Polymorphism, Genetic
• Respiratory Function Tests
• Smoking
• Tomography, X-Ray Computed
• Total Lung Capacity