Confirmation of RAX gene involvement in human anophthalmia

Clin Genet. 2008 Oct;74(4):392-5. doi: 10.1111/j.1399-0004.2008.01078.x. Epub 2008 Sep 9.

Abstract

Microphthalmia and anophthalmia are at the severe end of the spectrum of abnormalities in ocular development. Mutations in several genes have been involved in syndromic and non-syndromic anophthalmia. Previously, RAX recessive mutations were implicated in a single patient with right anophthalmia, left microphthalmia and sclerocornea. In this study, we report the findings of novel compound heterozygous RAX mutations in a child with bilateral anophthalmia. Both mutations are located in exon 3. c.664delT is a frameshifting deletion predicted to introduce a premature stop codon (p.Ser222ArgfsX62), and c.909C>G is a nonsense mutation with similar consequences (p.Tyr303X). This is the second report of a patient with anophthalmia caused by RAX mutations. These findings confirm that RAX plays a major role in the early stages of eye development and is involved in human anophthalmia.

Publication types

  • Case Reports

MeSH terms

  • Anophthalmos / genetics*
  • Anophthalmos / pathology
  • Child, Preschool
  • Cornea / abnormalities
  • Eye Proteins / genetics*
  • Female
  • Homeodomain Proteins / genetics*
  • Humans
  • Molecular Sequence Data
  • Orbit / abnormalities
  • Sequence Analysis, DNA
  • Transcription Factors / genetics*

Substances

  • Eye Proteins
  • Homeodomain Proteins
  • RAX protein, human
  • Transcription Factors