Interrupted aortic arch in a child with trisomy 5q31.1q35.1 due to a maternal (20;5) balanced insertion.
Complex congenital heart defects (CHD) are associated with a variety of single gene abnormalities and chromosomal rearrangements. Of the various forms of CHD, aortic arch interruption, a conotruncal heart defect, is relatively uncommon. Here we report a male neonate with aortic arch interruption type B, secundum atrial septal defect, perimembranous ventricular septal defect, patent ductus arteriosus, aortic and subaortic stenosis, and trisomy 5q31.1q35.1 resulting from a maternal balanced insertion (20;5). Chromosomal deletions, including deletion 22q11, have been reported with interrupted aortic arch (IAA); however, to our knowledge this is the first report of a trisomy of distal chromosome 5q associated with aortic arch interruption. Here we compare this child's features to other cases of trisomy 5q31.1q35.1, and review other causes of IAA. We conclude that gene dosage in this chromosomal region likely influences aortic arch development.
Martin
Donna M
DM
Department of Pediatrics and Communicable Diseases, University of Michigan Medical School, Ann Arbor, Michigan 48109-0688, USA.
Mindell
Margaret H
MH
Kwierant
Christine A
CA
Glover
Thomas W
TW
Gorski
Jerome L
JL
D000328:Adult; D001013:Aorta, Thoracic / Q000002:abnormalities*; D019457:Chromosome Breakage; D002890:Chromosomes, Human, Pair 20 / Q000235:genetics*; D002895:Chromosomes, Human, Pair 5 / Q000235:genetics*; D005192:Family Health; D017809:Fatal Outcome; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D007621:Karyotyping; D008297:Male; D014178:Translocation, Genetic; D014314:Trisomy