A case of maternal uniparental disomy of chromosome 9 in association with confined placental mosaicism for trisomy 9

Prenat Diagn. 1996 Apr;16(4):371-4. doi: 10.1002/(SICI)1097-0223(199604)16:4<371::AID-PD866>3.0.CO;2-S.

Abstract

We describe the first case of maternal uniparental disomy (UPD) of chromosome 9 in a fetus who was shown to have mosaic trisomy 9 in a chorionic villus sample. Karyotyping and molecular studies following termination of the pregnancy confirmed mosaicism in the placenta and maternal UPD(9) in the fetal tissues. This case demonstrates that the mechanism of trisomy correction may result in a fetus with UPD(9).

Publication types

  • Case Reports
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Abortion, Induced
  • Adult
  • Chorionic Villi Sampling*
  • Chromosomes, Human, Pair 9 / genetics*
  • Cytogenetics
  • Female
  • Genomic Imprinting
  • Humans
  • In Situ Hybridization, Fluorescence
  • Karyotyping
  • Molecular Biology
  • Mosaicism*
  • Placenta*
  • Polymerase Chain Reaction
  • Pregnancy
  • Trisomy / genetics*