Arterial aneurysm and dissection: toward the evolving phenotype of Tatton-Brown-Rahman syndrome.

Background: Tatton-Brown-Rahman syndrome (TBRS) is a rare disorder, caused by heterozygous pathogenic variants, and first described in 2014. TBRS is characterised by overgrowth, intellectual disability, facial dysmorphism, hypotonia and musculoskeletal features, as well as neurological and psychiatric features. Cardiac manifestations have also been reported, mainly congenital malformations such as atrial septal defect, ventricular septal defect and cardiac valvular disease.