Autosomal Dominant Inheritance of Cardiac Valves Anomalies in Two Families: Extended Spectrum of Left-Ventricular Outflow Tract Obstruction

Maria W. Wessels*, Ingrid M. B. H. van de Laar, Jolien Roos-Hesselink, Sipke Strikwerda, Danielle F. Majoor-Krakauer, Bert B. A. de Vries, Wilhelmina S. Kerstjens-Frederikse, Yvonne J. Vos, Bianca M. de Graaf, Aida M. Bertoli-Avella, Patrick J. Willems

*Corresponding author for this work

    Research output: Contribution to journalReview articlepeer-review

    4 Citations (Scopus)

    Abstract

    Only a limited number of families with clear monogenic inheritance of nonsyndromic forms of congenital valve defects have been described. We describe two multiplex pedigrees with a similar nonsyndromic form of heart valve anomalies that segregate as an autosomal dominant condition. The first family is a three-generation pedigree with 10 family members affected with congenital defects of the cardiac valves, including six patients with aortic stenosis and/or aortic regurgitation. Pulmonary and/ or tricuspid valve abnormalities were present in three patients, and ventricular septal defect (VSD) was present in two patients. The second family consists of 11 patients in three generations with aortic valve stenosis in seven patients, defects of the pulmonary valves in two patients, and atrial septal defect (ASD) in two patients. Incomplete penetrance was observed in both families. Although left-ventricular outflow tract obstruction was present in most family members, the co-occurrence with pulmonary valve abnormalities and septal defects in both families is uncommon. These families provide evidence that left-sided obstructive defects and thoracic aortic aneurysm may be accompanied by right-sided defects, and even septal defects. These families might be instrumental in identifying genes involved in cardiac valve morphogenesis and malformation. (c) 2009 Wiley-Liss, Inc.

    Original languageEnglish
    Pages (from-to)216-225
    Number of pages10
    JournalAmerican Journal of Medical Genetics. Part A
    Volume149A
    Issue number2
    DOIs
    Publication statusPublished - Feb-2009

    Keywords

    • aortic dilatation
    • autosomal dominant
    • bicuspid aortic valve
    • candidate genes
    • congenital heart malformation
    • heart valves
    • left-ventricular outflow tract obstruction
    • pathways
    • thoracic aortic aneurysm
    • BICUSPID AORTIC-VALVE
    • CONGENITAL HEART-DISEASE
    • VALVULAR PULMONIC STENOSIS
    • ATRIAL SEPTAL-DEFECT
    • HOMEOBOX GENE NKX2-5
    • TRICUSPID-ATRESIA
    • CARDIOVASCULAR DEVELOPMENT
    • ENDOCARDIAL CUSHION
    • DEFICIENT MICE
    • MESENCHYMAL TRANSFORMATION

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