1. Molecular determinants of atrial and ventricular septal defects and patent ductus arteriosus.
- Author
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Vaughan CJ and Basson CT
- Subjects
- Abnormalities, Multiple genetics, Abnormalities, Multiple pathology, Animals, Cell Movement, Chick Embryo, DNA-Binding Proteins deficiency, DNA-Binding Proteins genetics, DNA-Binding Proteins physiology, Down Syndrome pathology, Ductus Arteriosus, Patent embryology, Ductus Arteriosus, Patent epidemiology, Ellis-Van Creveld Syndrome genetics, Ellis-Van Creveld Syndrome pathology, Endocardial Cushion Defects embryology, Endocardial Cushion Defects genetics, Female, Fetal Heart pathology, Gene Expression Regulation, Developmental, Genes, Dominant, Genetic Linkage, Heart Septal Defects, Atrial embryology, Heart Septal Defects, Ventricular embryology, Homeobox Protein Nkx-2.5, Homeodomain Proteins genetics, Homeodomain Proteins physiology, Humans, Male, Membrane Proteins, Mice, Models, Animal, Neural Crest cytology, Pedigree, Proteins genetics, Proteins physiology, Syndrome, T-Box Domain Proteins deficiency, T-Box Domain Proteins genetics, T-Box Domain Proteins physiology, Transcription Factor AP-2, Transcription Factors deficiency, Transcription Factors genetics, Transcription Factors physiology, Ductus Arteriosus, Patent genetics, Heart Septal Defects, Atrial genetics, Heart Septal Defects, Ventricular genetics, Xenopus Proteins
- Abstract
Septation defects and patent ductus arteriosus are the most common human cardiovascular malformations (CVMs). Genetic factors play a major part in the origin of these malformations. Recent molecular analyses have shed light on several mendelian forms. In the autosomal dominant Holt-Oram syndrome, both atrial and ventricular septal defects are inherited in association with limb deformity as a result of mutations in the gene encoding the TBX5 transcription factor. Mutations in the NKX2.5 transcription factor gene cause autosomal dominant familial atrial septal defects in association with progressive atrioventricular block as well as complex congenital heart disease. Common atrial syndromes in autosomal dominant Ellis-van Creveld syndrome arise in the context of axial skeletal and limb malformation as a result of mutations in the EVC gene, whose function is unknown. Patent ductus arteriosus occurs in several syndromic forms of congenital heart disease, including Holt-Oram syndrome. Recent analyses of autosomal dominant Char syndrome, which includes, with variable penetrance, patent ductus arteriosus as well as craniofacial and hand malformations, have shown that the syndrome is caused by mutations in the TFAP2B transcription factor gene. Ongoing analyses are poised to determine the contribution of these genes as well as others yet to be identified to common, sporadic forms of congenital heart disease.
- Published
- 2000
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