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Pulmonary function and emphysema in Williams-Beuren syndrome.
Emily S Wan1, Barbara R Pober, George R Washko
1Channing Laboratory, Department of Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA.
American Journal of Medical Genetics. Part A
|February 27, 2010
Summary
Williams-Beuren syndrome (WBS) patients may have increased susceptibility to emphysema due to elastin gene deletion. Research suggests potential subclinical lung disease in WBS individuals, even non-smokers.
Area of Science:
- Genetics
- Pulmonology
- Medical Science
Background:
- Williams-Beuren syndrome (WBS) is a genetic disorder caused by a deletion on chromosome 7q11.23, including the elastin (ELN) gene.
- Elastin is crucial for lung elasticity, and its defects are linked to chronic obstructive pulmonary disease (COPD) and emphysema.
Observation:
- A lifelong non-smoking adult with WBS presented with moderate emphysema.
- Pulmonary function tests in WBS adolescents and young adults showed no significant spirometric abnormalities, but many reported respiratory symptoms.
Findings:
- Hemizygosity of the elastin gene locus in WBS may predispose individuals to COPD and emphysema.
- While severe obstructive lung disease is uncommon in young WBS adults, subclinical emphysema and lung issues may be present.
Implications:
- This research highlights a potential link between WBS and non-smoking-related emphysema.
- Further studies are needed to understand the pathogenesis of emphysema in WBS patients and its progression with age.
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