Cardiac phenotype in the chromosome 22q11.2 microdeletion syndrome

Michael Earing, Michael J. Ackerman, David J. Driscoll

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

Chromosome 22q11.2 deletions are present in 88% of patients with DiGeorge syndrome, 76% of patients with velocardiofacial syndrome, and 80% of patients with conotruncal anomaly face syndrome. In addition, haploinsufficiency at chromosome 22q11 has been noted with Opitz GBBB and CHARGE syndrome. The major features of these syndromes include congenital heart disease, aplasia or hypoplasia of the thymus and/or parathyroid glands, palatal abnormalities and learning difficulties. Overall, 75-85% of patients with a chromosome 22q11.2 microdeletion have some type of congenital heart disease. Conotruncal malformations, ventricular septal defects and aortic arch defects represent the most common cardiac phenotype. In this article, we review the most common cardiac anomalies associated with the deletion, the mechanism(s) underlying the pathogenesis of congenital heart disease due to chromosome 22q11.2 deletion, and the association of chromosome 22q11.2 deletion with cardiac defects in non-syndromic patients.

Original languageEnglish (US)
Pages (from-to)119-123
Number of pages5
JournalProgress in Pediatric cardiology
Volume15
Issue number2
DOIs
StatePublished - Jan 1 2002

Keywords

  • Chromosome 22q11 deletion
  • Congenital heart disease
  • Conotruncal anomaly face syndrome
  • DiGeorge syndrome
  • Velocardiofacial syndrome

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Cardiology and Cardiovascular Medicine

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