Constellation of congenital abnormalities in an infant: a new syndrome or tissue-specific mosaicism for trisomy 18?

Journal Article (Journal Article)

A newborn infant born to consanguineous (first cousin) parents was noted to have complex congenital heart defect and minor anomalies suggestive of trisomy 18. Blood lymphocyte and skin fibroblast karyotypes were normal. He died in the neonatal period of postoperative complications. On interphase fluorescence in-situ hybridization (FISH) using autopsy specimens, a significant number of cells in the liver (17%) were trisomic for chromosome 18, compared to normal control liver tissue. However, interphase FISH analyses of blood lymphocytes, skin fibroblasts, and kidney tissue were normal. It is our opinion that this apparent mosaicism for trisomy 18 in the patient's liver may be spurious, though it brings into focus the issue of possible tissue/organ-specific mosaicism. The anomalies in this infant do not resemble a previously described malformation syndrome. Parental consanguinity raises the possibility that this represents a new autosomal recessive malformation syndrome.

Full Text

Duke Authors

Cited Authors

  • Shashi, V; Golden, WL; von Kap-Herr, C; Wilson, WG

Published Date

  • March 1, 1996

Published In

Volume / Issue

  • 62 / 1

Start / End Page

  • 38 - 41

PubMed ID

  • 8779322

International Standard Serial Number (ISSN)

  • 0148-7299

Digital Object Identifier (DOI)

  • 10.1002/(SICI)1096-8628(19960301)62:1<38::AID-AJMG8>3.0.CO;2-S


  • eng

Conference Location

  • United States