title: Aortopathy in the 7q11.23 microduplication syndrome.
abstract: The 7q11.23 microduplication syndrome, caused by the reciprocal duplication of the Williams-Beuren syndrome deletion region, is a genomic disorder with an emerging clinical phenotype. Dysmorphic features, congenital anomalies, hypotonia, developmental delay highlighted by variable speech delay, and autistic features are characteristic findings. Congenital heart defects, most commonly patent ductus arteriosus, have been reported in a minority of cases. Included in the duplicated region is elastin (ELN), implicated as the cause of supravalvar aortic stenosis in patients with Williams-Beuren syndrome. Here we present a series of eight pediatric patients and one adult with 7q11.23 microduplication syndrome, all of whom had aortic dilation, the opposite vascular phenotype of the typical supravalvar aortic stenosis found in Williams-Beuren syndrome. The ascending aorta was most commonly involved, while dilation was less frequently identified at the aortic root and sinotubular junction. The findings in these patients support a recommendation for cardiovascular surveillance in patients with 7q11.23 microduplication syndrome.
authors.affiliation: Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Heart Institute, Cincinnati, Ohio.
authors.forename: Ashley
authors.initials: A
authors.lastname: Parrott
authors.forename: Jeanne
authors.initials: J
authors.lastname: James
authors.forename: Paula
authors.initials: P
authors.lastname: Goldenberg
authors.forename: Robert B
authors.initials: RB
authors.lastname: Hinton
authors.forename: Erin
authors.initials: E
authors.lastname: Miller
authors.forename: Amy
authors.initials: A
authors.lastname: Shikany
authors.forename: Arthur S
authors.initials: AS
authors.lastname: Aylsworth
authors.forename: Kathleen
authors.initials: K
authors.lastname: Kaiser-Rogers
authors.forename: Sunita J
authors.initials: SJ
authors.lastname: Ferns
authors.forename: Seema R
authors.initials: SR
authors.lastname: Lalani
authors.forename: Stephanie M
authors.initials: SM
authors.lastname: Ware
mesh_terms: D000293:Adolescent; D000328:Adult; D001011:Aorta / Q000002:abnormalities* / Q000000981:diagnostic imaging; D002648:Child; D002675:Child, Preschool; D025063:Chromosome Disorders / Q000175:diagnosis* / Q000235:genetics*; D058674:Chromosome Duplication; D002897:Chromosomes, Human, Pair 7; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D010375:Pedigree; D010641:Phenotype; D013577:Syndrome; D014463:Ultrasonography; D055815:Young Adult
keywords: 7q11.23 microduplication; Williams-Beuren syndrome; elastin; pediatrics; thoracic aortic aneurysm