Article Text

PDF

A 4 Mb cryptic deletion associated with inv(8)(q13.1q24.11) in a patient with trichorhinophalangeal syndrome type I.
  1. T Sasaki,
  2. H Tonoki,
  3. H Soejima,
  4. N Niikawa
  1. Department of Human Genetics, Nagasaki University School of Medicine, Japan.

    Abstract

    We report on an 11 year old girl with trichorhinophalangeal syndrome type I (TRPS1), postaxial polydactyly of the fingers, and a de novo paracentric inversion on the long arm of chromosome 8 involving bands q13.1 and q24.11. Molecular analysis using FISH and polymorphic DNA markers detected an approximately 4 Mb, cytogenetically unidentified deletion occurring between two STSs markers, AFMB331YA9 and D8S1200, around the region of the distal inversion breakpoint. Although the deletion is large, mental retardation was not present in the patient. This is the first report of a cryptic deletion in a TRPS1 patient, both ends of which were analysed at the molecular level. The data obtained are useful for defining the location of the putative mental retardation gene(s) in TRPS1 and Langer-Giedion syndrome (TRPS2), as well as a locus for postaxial polydactyly.

    Statistics from Altmetric.com

    Request permissions

    If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.