Paternally inherited duplications of 11p15.5 and Beckwith-Wiedemann syndrome

J Med Genet. 1997 Oct;34(10):819-26. doi: 10.1136/jmg.34.10.819.

Abstract

We present a three generation family in which a father and son have a balanced chromosome translocation between the short arms of chromosomes 5 and 11 (karyotype 46,XY,t(5;11)(p15.3;p15.3)). Two family members have inherited the unbalanced products of this translocation and are trisomic for chromosome 11p15.3-->pter and monosomic for chromosome 5p15.3-->pter (karyotype 46,XY,der(5)t(5;11)(p15.3;p15.3)pat). Paternally derived duplications of 11p15.5 are associated with Beckwith-Wiedemann syndrome (BWS) and both family members trisomic for 11p15.5 had prenatal overgrowth (birth weights >97th centile), macroglossia, coarse facial features, and broad hands. We review the clinical features of BWS patients who have a paternally derived duplication of 11p15.5 and provide evidence for a distinct pattern of dysmorphic features in those with this chromosome duplication. Interestingly, our family is the fifth unrelated family to be reported with a balanced reciprocal translocation between the short arms of chromosomes 5 and 11. The apparently non-random nature of this particular chromosome translocation is suggestive of sequence homology between the two chromosome regions involved in the translocation.

Publication types

  • Case Reports
  • Review

MeSH terms

  • Adolescent
  • Beckwith-Wiedemann Syndrome / genetics*
  • Beckwith-Wiedemann Syndrome / physiopathology
  • Chromosomes, Human, Pair 11*
  • Chromosomes, Human, Pair 5*
  • Fathers*
  • Female
  • Humans
  • Karyotyping
  • Male
  • Multigene Family*
  • Pedigree
  • Translocation, Genetic