Tetralogy of Fallot and a complete atrioventricular septal defect are thought to arise by distinct mechanisms, yet their co-occurrence is a recognized association. Analysis of the prevalence of co-occurrence in Down syndrome suggests a common developmental basis. Trisomy 21 may perturb cardiac progenitor cells before they enter the heart tube.
ASJC Scopus subject areas
- Pediatrics, Perinatology, and Child Health