Human Molecular Genetics, Vol 6, 1021-1028, Copyright © 1997 by Oxford University Press
DY Li, AE Toland, BB Boak, DL Atkinson, GJ Ensing, CA Morris and MT Keating
Supravalvular aortic stenosis (SVAS) is an inherited obstructive vascular
disease that affects the aorta, carotid, coronary and pulmonary arteries.
Previous molecular genetic data have led to the hypothesis that SVAS
results from mutations in the elastin gene, ELN. In these studies, the
disease phenotype was linked to gross DNA rearrangements (35 and 85 kb
deletions and a translocation) in three SVAS families. However, gross
rearrangements of ELN have not been identified in most cases of autosomal
dominant SVAS. To define the spectrum of ELN mutations responsible for this
disorder, we refined the genomic structure of human ELN and used this
information in mutational analyses. ELN point mutations co-segregate with
the disease in four familial cases and are associated with SVAS in three
sporadic cases. Two of the mutations are nonsense, one is a single base
pair deletion and four are splice site mutations. In one sporadic case, the
mutation arose de novo. These data demonstrate that point mutations of ELN
cause autosomal dominant SVAS.
ARTICLES
Elastin point mutations cause an obstructive vascular disease, supravalvular aortic stenosis
Cardiology Division, University of Utah Health Sciences Center, Eccles Institute of Human Genetics, Salt Lake City 84112, USA.
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